Generate randpkt_core/doxygen.cfg.
[metze/wireshark/wip.git] / macosx-setup.sh
index e7f7db36a25cdb0b1f1ab2e02007b93499beca6c..f846d15ab53ad98b2196667e43e122d25c8b12b9 100755 (executable)
@@ -1,8 +1,6 @@
 #!/bin/sh
 # Setup development environment on Mac OS X (tested with 10.6.8 and Xcode 3.2.6)
 #
-# $Id$
-#
 # Copyright 2011 Michael Tuexen, Joerg Mayer, Guy Harris (see AUTHORS file)
 #
 # Wireshark - Network traffic analyzer
 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
 #
-# To build cmake
-# CMAKE=1
+# To install cmake
+#
+CMAKE=1
+#
+# To install autotools
+#
+AUTOTOOLS=1
 #
 # To build all libraries as 32-bit libraries uncomment the following three lines.
 #
@@ -54,7 +57,7 @@ XZ_VERSION=5.0.4
 #
 # In case we want to build with cmake.
 #
-CMAKE_VERSION=2.8.10.2
+CMAKE_VERSION=${CMAKE_VERSION-2.8.12.2}
 
 #
 # The following libraries and tools are required even to build only TShark.
@@ -66,17 +69,20 @@ PKG_CONFIG_VERSION=0.28
 #
 # One or more of the following libraries are required to build Wireshark.
 #
-# If you don't want to build with Qt, comment out the QT_VERSION= line.
+# To override the versions of Qt and GTK call the script with some of the
+# variables set to the new values. Setting a variable to empty will disable
+# building the toolkit and will un-install any version previously installed
+# by the script, e.g. "GTK_VERSION=3.5.2 QT_VERSION= ./macos-setup.sh"
+# will build and install with GTK+ 3.5.2 and will not install Qt (and,
+# if the script installed Qt earlier, will un-install that version of Qt).
 #
-# If you want to build with GTK+ 2, comment out the GTK_VERSION=3.* line
-# and un-comment the GTK_VERSION=2.* line.
+# Note that Qt 5, prior to 5.5.0, mishandles context menus in ways that,
+# for example, cause them not to work reliably in the packet detail or
+# packet data pane; see, for example, Qt bugs QTBUG-31937, QTBUG-41017,
+# and QTBUG-43464, all of which seem to be the same bug.
 #
-# If you don't want to build with GTK+ at all, comment out both lines.
-# 
-#QT_VERSION=5.1.1
-QT_VERSION=5.2.0
-GTK_VERSION=2.24.17
-#GTK_VERSION=3.5.2
+QT_VERSION=${QT_VERSION-5.5.0}
+GTK_VERSION=${GTK_VERSION-2.24.17}
 if [ "$GTK_VERSION" ]; then
     #
     # We'll be building GTK+, so we need some additional libraries.
@@ -87,12 +93,24 @@ if [ "$GTK_VERSION" ]; then
 
     ATK_VERSION=2.8.0
     PANGO_VERSION=1.30.1
-    PNG_VERSION=1.5.17
+    PNG_VERSION=1.6.20
     PIXMAN_VERSION=0.26.0
     CAIRO_VERSION=1.12.2
     GDK_PIXBUF_VERSION=2.28.0
 fi
+if [ "$QT_VERSION" ]; then
+    QT_MAJOR_VERSION="`expr $QT_VERSION : '\([0-9][0-9]*\).*'`"
+    QT_MINOR_VERSION="`expr $QT_VERSION : '[0-9][0-9]*\.\([0-9][0-9]*\).*'`"
+    QT_DOTDOT_VERSION="`expr $QT_VERSION : '[0-9][0-9]*\.[0-9][0-9]*\.\([0-9][0-9]*\).*'`"
+    QT_MAJOR_MINOR_VERSION=$QT_MAJOR_VERSION.$QT_MINOR_VERSION
+    QT_MAJOR_MINOR_DOTDOT_VERSION=$QT_MAJOR_VERSION.$QT_MINOR_VERSION.$QT_DOTDOT_VERSION
+fi
 
+# In case we want to build GTK *and* we don't have Apple's X11 SDK installed
+# we may want to install XQuartz. The version will only be used in the printing
+# of a URL, the package will not be installed.
+#
+XQUARTZ_VERSION=2.7.5
 #
 # The following libraries are optional.
 # Comment them out if you don't want them, but note that some of
@@ -105,16 +123,14 @@ LIBSMI_VERSION=0.4.8
 LIBGPG_ERROR_VERSION=1.10
 #
 # libgcrypt is required for GnuTLS.
-# XXX - the link for "Libgcrypt source code" at
-# http://www.gnupg.org/download/#libgcrypt is for 1.5.0, and is a bzip2
-# file, but http://directory.fsf.org/project/libgcrypt/ lists only
-# 1.4.6.
 #
 LIBGCRYPT_VERSION=1.5.0
 GNUTLS_VERSION=2.12.19
-# Stay with Lua 5.1 when updating until the code has been changed
-# to support 5.2
-LUA_VERSION=5.1.5
+# Use 5.2.3, not 5.3, for now; lua_bitop.c hasn't been ported to 5.3
+# yet, and we need to check for compatibility issues (we'd want Lua
+# scripts to work with 5.1, 5.2, and 5.3, as long as they only use Lua
+# features present in all three versions)
+LUA_VERSION=5.2.3
 PORTAUDIO_VERSION=pa_stable_v19_20111121
 #
 # XXX - they appear to have an unversioned gzipped tarball for the
@@ -125,1261 +141,2290 @@ GEOIP_VERSION=1.4.8
 
 CARES_VERSION=1.10.0
 
+LIBSSH_VERSION=0.7.2
+
 DARWIN_MAJOR_VERSION=`uname -r | sed 's/\([0-9]*\).*/\1/'`
 
 #
 # GNU autotools; they're provided with releases up to Snow Leopard, but
 # not in later releases.
 #
-if [[ $DARWIN_MAJOR_VERSION -gt 10 ]]; then
+if [ -n "$AUTOTOOLS" -a $DARWIN_MAJOR_VERSION -gt 10 ]; then
     AUTOCONF_VERSION=2.69
     AUTOMAKE_VERSION=1.13.3
     LIBTOOL_VERSION=2.4.2
 fi
 
-uninstall() {
-    if [ -d macosx-support-libs ]
-    then
-        cd macosx-support-libs
+install_xz() {
+    if [ "$XZ_VERSION" -a ! -f xz-$XZ_VERSION-done ] ; then
+        echo "Downloading, building, and installing xz:"
+        [ -f xz-$XZ_VERSION.tar.bz2 ] || curl -O http://tukaani.org/xz/xz-$XZ_VERSION.tar.bz2 || exit 1
+        bzcat xz-$XZ_VERSION.tar.bz2 | tar xf - || exit 1
+        cd xz-$XZ_VERSION
+        CFLAGS="$CFLAGS -D_FORTIFY_SOURCE=0" ./configure || exit 1
+        make $MAKE_BUILD_OPTS || exit 1
+        $DO_MAKE_INSTALL || exit 1
+        cd ..
+        touch xz-$XZ_VERSION-done
+    fi
+}
 
+uninstall_xz() {
+    if [ ! -z "$installed_xz_version" ] ; then
+        echo "Uninstalling xz:"
+        cd xz-$installed_xz_version
+        $DO_MAKE_UNINSTALL || exit 1
+        make distclean || exit 1
+        cd ..
+        rm xz-$installed_xz_version-done
+
+        if [ "$#" -eq 1 -a "$1" = "-r" ] ; then
+            #
+            # Get rid of the previously downloaded and unpacked version.
+            #
+            rm -rf xz-$installed_xz_version
+            rm -rf xz-$installed_xz_version.tar.bz2
+        fi
+
+        installed_xz_version=""
+    fi
+}
+
+install_autoconf() {
+    if [ "$AUTOCONF_VERSION" -a ! -f autoconf-$AUTOCONF_VERSION-done ] ; then
+        echo "Downloading, building and installing GNU autoconf..."
+        [ -f autoconf-$AUTOCONF_VERSION.tar.xz ] || curl -O ftp://ftp.gnu.org/gnu/autoconf/autoconf-$AUTOCONF_VERSION.tar.xz || exit 1
+        xzcat autoconf-$AUTOCONF_VERSION.tar.xz | tar xf - || exit 1
+        cd autoconf-$AUTOCONF_VERSION
+        ./configure || exit 1
+        make $MAKE_BUILD_OPTS || exit 1
+        $DO_MAKE_INSTALL || exit 1
+        cd ..
+        touch autoconf-$AUTOCONF_VERSION-done
+    fi
+}
+
+uninstall_autoconf() {
+    if [ ! -z "$installed_autoconf_version" ] ; then
         #
-        # Uninstall items in the reverse order from the order in which they're
-        # installed.  Only uninstall if the download/build/install process
-        # completed; uninstall the version that appears in the name of
-        # the -done file.
-        #
-        # We also do a "make distclean", so that we don't have leftovers from
-        # old configurations.
+        # automake and libtool depend on this, so uninstall them.
         #
+        uninstall_libtool
+        uninstall_automake
 
-        installed_cares_version=`ls cares-*-done 2>/dev/null | sed 's/cares-\(.*\)-done/\1/'`
-        if [ ! -z "$installed_cares_version" ] ; then
-            echo "Uninstalling C-Ares API:"
-            cd cares-$installed_cares_version
-            $DO_MAKE_UNINSTALL || exit 1
-            make distclean || exit 1
-            cd ..
-            rm cares-$installed_cares_version-done
-        fi
-
-        installed_geoip_version=`ls geoip-*-done 2>/dev/null | sed 's/geoip-\(.*\)-done/\1/'`
-        if [ ! -z "$installed_geoip_version" ] ; then
-            echo "Uninstalling GeoIP API:"
-            cd GeoIP-$installed_geoip_version
-            $DO_MAKE_UNINSTALL || exit 1
-            make distclean || exit 1
-            cd ..
-            rm geoip-$installed_geoip_version-done
-        fi
-
-        if [ "$PORTAUDIO_VERSION" -a -f portaudio-done ] ; then
-            echo "Uninstalling PortAudio:"
-            cd portaudio
-            $DO_MAKE_UNINSTALL || exit 1
-            make distclean || exit 1
-            cd ..
-            rm portaudio-done
-        fi
-
-        installed_lua_version=`ls lua-*-done 2>/dev/null | sed 's/lua-\(.*\)-done/\1/'`
-        if [ ! -z "$installed_lua_version" ] ; then
-            echo "Uninstalling Lua:"
-            #
-            # Lua has no "make uninstall", so just remove stuff manually.
-            # There's no configure script, so there's no need for
-            # "make distclean", either; just do "make clean".
-            #
-            (cd /usr/local/bin; $DO_RM -f lua luac)
-            (cd /usr/local/include; $DO_RM -f lua.h luaconf.h lualib.h lauxlib.h lua.hpp)
-            (cd /usr/local/lib; $DO_RM -f liblua.a)
-            (cd /usr/local/man/man1; $DO_RM -f lua.1 luac.1)
-            cd lua-$installed_lua_version
-            make clean || exit 1
-            cd ..
-            rm lua-$installed_lua_version-done
-        fi
-
-        installed_gnutls_version=`ls gnutls-*-done 2>/dev/null | sed 's/gnutls-\(.*\)-done/\1/'`
-        if [ ! -z "$installed_gnutls_version" ] ; then
-            echo "Uninstalling GnuTLS:"
-            cd gnutls-$installed_gnutls_version
-            $DO_MAKE_UNINSTALL || exit 1
-            make distclean || exit 1
-            cd ..
-            rm gnutls-$installed_gnutls_version-done
-        fi
-
-        installed_libgcrypt_version=`ls libgcrypt-*-done 2>/dev/null | sed 's/libgcrypt-\(.*\)-done/\1/'`
-        if [ ! -z "$installed_libgcrypt_version" ] ; then
-            echo "Uninstalling libgcrypt:"
-            cd libgcrypt-$installed_libgcrypt_version
-            $DO_MAKE_UNINSTALL || exit 1
-            make distclean || exit 1
-            cd ..
-            rm libgcrypt-$installed_libgcrypt_version-done
-        fi
-
-        installed_libgpg_error_version=`ls libgpg-error-*-done 2>/dev/null | sed 's/libgpg-error-\(.*\)-done/\1/'`
-        if [ ! -z "$installed_libgpg_error_version" ] ; then
-            echo "Uninstalling libgpg-error:"
-            cd libgpg-error-$installed_libgpg_error_version
-            $DO_MAKE_UNINSTALL || exit 1
-            make distclean || exit 1
-            cd ..
-            rm libgpg-error-$installed_libgpg_error_version-done
-        fi
-
-        installed_libsmi_version=`ls libsmi-*-done 2>/dev/null | sed 's/libsmi-\(.*\)-done/\1/'`
-        if [ ! -z "$installed_libsmi_version" ] ; then
-            echo "Uninstalling libsmi:"
-            cd libsmi-$installed_libsmi_version
-            $DO_MAKE_UNINSTALL || exit 1
-            make distclean || exit 1
-            cd ..
-            rm libsmi-$installed_libsmi_version-done
-        fi
-
-        installed_gtk_version=`ls gtk+-*-done 2>/dev/null | sed 's/gtk+-\(.*\)-done/\1/'`
-        if [ ! -z "$installed_gtk_version" ] ; then
-            echo "Uninstalling GTK+:"
-            cd gtk+-$installed_gtk_version
-            $DO_MAKE_UNINSTALL || exit 1
-            make distclean || exit 1
-            cd ..
-            rm gtk+-$installed_gtk_version-done
-        fi
-
-        installed_gdk_pixbuf_version=`ls gdk-pixbuf-*-done 2>/dev/null | sed 's/gdk-pixbuf-\(.*\)-done/\1/'`
-        if [ ! -z "$installed_gdk_pixbuf_version" ] ; then
-            echo "Uninstalling gdk-pixbuf:"
-            cd gdk-pixbuf-$installed_gdk_pixbuf_version
-            $DO_MAKE_UNINSTALL || exit 1
-            make distclean || exit 1
-            cd ..
-            rm gdk-pixbuf-$installed_gdk_pixbuf_version-done
-        fi
-
-        installed_pango_version=`ls pango-*-done 2>/dev/null | sed 's/pango-\(.*\)-done/\1/'`
-        if [ ! -z "$installed_pango_version" ] ; then
-            echo "Uninstalling Pango:"
-            cd pango-$installed_pango_version
-            $DO_MAKE_UNINSTALL || exit 1
-            make distclean || exit 1
-            cd ..
-            rm pango-$installed_pango_version-done
-        fi
-
-        installed_atk_version=`ls atk-*-done 2>/dev/null | sed 's/atk-\(.*\)-done/\1/'`
-        if [ ! -z "$installed_atk_version" ] ; then
-            echo "Uninstalling ATK:"
-            cd atk-$installed_atk_version
-            $DO_MAKE_UNINSTALL || exit 1
-            make distclean || exit 1
-            cd ..
-            rm atk-$installed_atk_version-done
-        fi
-
-        installed_cairo_version=`ls cairo-*-done 2>/dev/null | sed 's/cairo-\(.*\)-done/\1/'`
-        if [ ! -z "$installed_cairo_version" ] ; then
-            echo "Uninstalling Cairo:"
-            cd cairo-$installed_cairo_version
-            $DO_MAKE_UNINSTALL || exit 1
-            make distclean || exit 1
-            cd ..
-            rm cairo-$installed_cairo_version-done
-        fi
-
-        installed_pixman_version=`ls pixman-*-done 2>/dev/null | sed 's/pixman-\(.*\)-done/\1/'`
-        if [ ! -z "$installed_pixman_version" ] ; then
-            echo "Uninstalling pixman:"
-            cd pixman-$installed_pixman_version
-            $DO_MAKE_UNINSTALL || exit 1
-            make distclean || exit 1
-            cd ..
-            rm pixman-$installed_pixman_version-done
-        fi
-
-        installed_libpng_version=`ls libpng-*-done 2>/dev/null | sed 's/libpng-\(.*\)-done/\1/'`
-        if [ ! -z "$installed_libpng_version" ] ; then
-            echo "Uninstalling libpng:"
-            cd libpng-$installed_libpng_version
-            $DO_MAKE_UNINSTALL || exit 1
-            make distclean || exit 1
-            cd ..
-            rm libpng-$installed_libpng_version-done
-        fi
-
-        installed_qt_version=`ls qt-*-done 2>/dev/null | sed 's/qt-\(.*\)-done/\1/'`
-        if [ ! -z "$installed_qt_version" ] ; then
-            echo "Uninstalling Qt:"
-            cd qt-everywhere-opensource-src-$installed_qt_version
-            $DO_MAKE_UNINSTALL || exit 1
-            #
-            # XXX - "make distclean" doesn't work.  qmake sure does a
-            # good job of constructing Makefiles that work correctly....
-            #
-            #make distclean || exit 1
-            cd ..
-            rm qt-$installed_qt_version-done
-        fi
-
-        installed_glib_version=`ls glib-*-done 2>/dev/null | sed 's/glib-\(.*\)-done/\1/'`
-        if [ ! -z "$installed_glib_version" ] ; then
-            echo "Uninstalling GLib:"
-            cd glib-$installed_glib_version
-            $DO_MAKE_UNINSTALL || exit 1
-            make distclean || exit 1
-            cd ..
-            rm glib-$installed_glib_version-done
-        fi
-
-        installed_pkg_config_version=`ls pkg-config-*-done 2>/dev/null | sed 's/pkg-config-\(.*\)-done/\1/'`
-        if [ ! -z "$installed_pkg_config_version" ] ; then
-            echo "Uninstalling pkg-config:"
-            cd pkg-config-$installed_pkg_config_version
-            $DO_MAKE_UNINSTALL || exit 1
-            make distclean || exit 1
-            cd ..
-            rm pkg-config-$installed_pkg_config_version-done
-        fi
-
-        installed_gettext_version=`ls gettext-*-done 2>/dev/null | sed 's/gettext-\(.*\)-done/\1/'`
-        if [ ! -z "$installed_gettext_version" ] ; then
-            echo "Uninstalling GNU gettext:"
-            cd gettext-$installed_gettext_version
-            $DO_MAKE_UNINSTALL || exit 1
-            make distclean || exit 1
-            cd ..
-            rm gettext-$installed_gettext_version-done
-        fi
-
-        installed_cmake_version=`ls cmake-*-done 2>/dev/null | sed 's/cmake-\(.*\)-done/\1/'`
-        if [ ! -z "$installed_cmake_version" ]; then
-            echo "Uninstalling CMake:"
-            cd cmake-$installed_cmake_version
-            $DO_MAKE_UNINSTALL || exit 1
-            make distclean || exit 1
-            cd ..
-            rm cmake-$installed_cmake_version-done
+        echo "Uninstalling GNU autoconf:"
+        cd autoconf-$installed_autoconf_version
+        $DO_MAKE_UNINSTALL || exit 1
+        make distclean || exit 1
+        cd ..
+        rm autoconf-$installed_autoconf_version-done
+
+        if [ "$#" -eq 1 -a "$1" = "-r" ] ; then
+            #
+            # Get rid of the previously downloaded and unpacked version.
+            #
+            rm -rf autoconf-$installed_autoconf_version
+            rm -rf autoconf-$installed_autoconf_version.tar.xz
         fi
 
-        installed_libtool_version=`ls libtool-*-done 2>/dev/null | sed 's/libtool-\(.*\)-done/\1/'`
-        if [ ! -z "$installed_libtool_version" ] ; then
-            echo "Uninstalling GNU libtool:"
-            cd libtool-$installed_libtool_version
-            mv /usr/local/bin/glibtool /usr/local/bin/libtool
-            mv /usr/local/bin/glibtoolize /usr/local/bin/libtoolize
-            $DO_MAKE_UNINSTALL || exit 1
-            make distclean || exit 1
-            cd ..
-            rm libtool-$installed_libtool_version-done
-        fi
-
-        installed_automake_version=`ls automake-*-done 2>/dev/null | sed 's/automake-\(.*\)-done/\1/'`
-        if [ ! -z "$installed_automake_version" ] ; then
-            echo "Uninstalling GNU automake:"
-            cd automake-$installed_automake_version
-            $DO_MAKE_UNINSTALL || exit 1
-            make distclean || exit 1
-            cd ..
-            rm automake-$installed_automake_version-done
-        fi
-
-        installed_autoconf_version=`ls autoconf-*-done 2>/dev/null | sed 's/autoconf-\(.*\)-done/\1/'`
-        if [ ! -z "$installed_autoconf_version" ] ; then
-            echo "Uninstalling GNU autoconf:"
-            cd autoconf-$installed_autoconf_version
-            $DO_MAKE_UNINSTALL || exit 1
-            make distclean || exit 1
-            cd ..
-            rm autoconf-$installed_autoconf_version-done
-        fi
-
-        installed_xz_version=`ls xz-*-done 2>/dev/null | sed 's/xz-\(.*\)-done/\1/'`
-        if [ ! -z "$installed_xz_version" ] ; then
-            echo "Uninstalling xz:"
-            cd xz-$installed_xz_version
-            $DO_MAKE_UNINSTALL || exit 1
-            make distclean || exit 1
-            cd ..
-            rm xz-$installed_xz_version-done
+        installed_autoconf_version=""
+    fi
+}
+
+install_automake() {
+    if [ "$AUTOMAKE_VERSION" -a ! -f automake-$AUTOMAKE_VERSION-done ] ; then
+        echo "Downloading, building and installing GNU automake..."
+        [ -f automake-$AUTOMAKE_VERSION.tar.xz ] || curl -O ftp://ftp.gnu.org/gnu/automake/automake-$AUTOMAKE_VERSION.tar.xz || exit 1
+        xzcat automake-$AUTOMAKE_VERSION.tar.xz | tar xf - || exit 1
+        cd automake-$AUTOMAKE_VERSION
+        ./configure || exit 1
+        make $MAKE_BUILD_OPTS || exit 1
+        $DO_MAKE_INSTALL || exit 1
+        cd ..
+        touch automake-$AUTOMAKE_VERSION-done
+    fi
+}
+
+uninstall_automake() {
+    if [ ! -z "$installed_automake_version" ] ; then
+        #
+        # libtool depends on this(?), so uninstall it.
+        #
+        uninstall_libtool "$@"
+
+        echo "Uninstalling GNU automake:"
+        cd automake-$installed_automake_version
+        $DO_MAKE_UNINSTALL || exit 1
+        make distclean || exit 1
+        cd ..
+        rm automake-$installed_automake_version-done
+
+        if [ "$#" -eq 1 -a "$1" = "-r" ] ; then
+            #
+            # Get rid of the previously downloaded and unpacked version.
+            #
+            rm -rf automake-$installed_automake_version
+            rm -rf automake-$installed_automake_version.tar.xz
         fi
+
+        installed_automake_version=""
     fi
 }
 
-#
-# Do we have permission to write in /usr/local?
-#
-# If so, assume we have permission to write in its subdirectories.
-# (If that's not the case, this test needs to check the subdirectories
-# as well.)
-#
-# If not, do "make install", "make uninstall", and the removes for Lua
-# with sudo.
-#
-if [ -w /usr/local ]
-then
-    DO_MAKE_INSTALL="make install"
-    DO_MAKE_UNINSTALL="make uninstall"
-    DO_RM="rm"
-else
-    DO_MAKE_INSTALL="sudo make install"
-    DO_MAKE_UNINSTALL="sudo make uninstall"
-    DO_RM="sudo rm"
-fi
+install_libtool() {
+    if [ "$LIBTOOL_VERSION" -a ! -f libtool-$LIBTOOL_VERSION-done ] ; then
+        echo "Downloading, building and installing GNU libtool..."
+        [ -f libtool-$LIBTOOL_VERSION.tar.xz ] || curl -O ftp://ftp.gnu.org/gnu/libtool/libtool-$LIBTOOL_VERSION.tar.xz || exit 1
+        xzcat libtool-$LIBTOOL_VERSION.tar.xz | tar xf - || exit 1
+        cd libtool-$LIBTOOL_VERSION
+        ./configure || exit 1
+        make $MAKE_BUILD_OPTS || exit 1
+        $DO_MAKE_INSTALL || exit 1
+        $DO_MV /usr/local/bin/libtool /usr/local/bin/glibtool
+        $DO_MV /usr/local/bin/libtoolize /usr/local/bin/glibtoolize
+        cd ..
+       touch libtool-$LIBTOOL_VERSION-done
+    fi
+}
 
-#
-# If we have SDKs available, the default target OS is the major version
-# of the one we're running; get that and strip off the third component.
-#
-for i in /Developer/SDKs \
-    /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs \
-    /Library/Developer/CommandLineTools/SDKs
-do
-    if [ -d "$i" ]
-    then
-        min_osx_target=`sw_vers -productVersion | sed 's/\([[0-9]]*\).\([[0-9]]*\).[[0-9]]*/\1.\2/'`
-        break
+uninstall_libtool() {
+    if [ ! -z "$installed_libtool_version" ] ; then
+        echo "Uninstalling GNU libtool:"
+        cd libtool-$installed_libtool_version
+        $DO_MV /usr/local/bin/glibtool /usr/local/bin/libtool
+        $DO_MV /usr/local/bin/glibtoolize /usr/local/bin/libtoolize
+        $DO_MAKE_UNINSTALL || exit 1
+        make distclean || exit 1
+        cd ..
+        rm libtool-$installed_libtool_version-done
+
+        if [ "$#" -eq 1 -a "$1" = "-r" ] ; then
+            #
+            # Get rid of the previously downloaded and unpacked version.
+            #
+            rm -rf libtool-$installed_libtool_version
+            rm -rf libtool-$installed_libtool_version.tar.xz
+        fi
+
+        installed_libtool_version=""
     fi
-done
+}
 
-#
-# Parse command-line flags:
-#
-# -h - print help.
-# -t <target> - build libraries so that they'll work on the specified
-# version of OS X and later versions.
-# -u - do an uninstall.
-#
-while getopts ht:u name
-do
-    case $name in
-    u)
-        do_uninstall=yes
-        ;;
-    t)
-        min_osx_target="$OPTARG"
-        ;;
-    h|?)
-        echo "Usage: macosx-setup.sh [ -t <target> ] [ -u ]" 1>&1
-        exit 0
-        ;;
-    esac
-done
+install_cmake() {
+    if [ -n "$CMAKE" -a ! -f cmake-$CMAKE_VERSION-done ]; then
+        echo "Downloading and installing CMake:"
+        CMAKE_MAJOR_VERSION="`expr $CMAKE_VERSION : '\([0-9][0-9]*\).*'`"
+        CMAKE_MINOR_VERSION="`expr $CMAKE_VERSION : '[0-9][0-9]*\.\([0-9][0-9]*\).*'`"
+        CMAKE_DOTDOT_VERSION="`expr $CMAKE_VERSION : '[0-9][0-9]*\.[0-9][0-9]*\.\([0-9][0-9]*\).*'`"
+        CMAKE_MAJOR_MINOR_VERSION=$CMAKE_MAJOR_VERSION.$CMAKE_MINOR_VERSION
 
-if [ "$do_uninstall" = "yes" ]
-then
-    uninstall
-    exit 0
-fi
+        #
+        # NOTE: the "64" in "Darwin64" doesn't mean "64-bit-only"; the
+        # package in question supports both 32-bit and 64-bit x86.
+        #
+        case "$CMAKE_MAJOR_VERSION" in
 
-#
-# Configure scripts tend to set CFLAGS and CXXFLAGS to "-g -O2" if
-# invoked without CFLAGS or CXXFLAGS being set in the environment.
-#
-# However, we *are* setting them in the environment, for our own
-# nefarious purposes, so start them out as "-g -O2".
-#
-CFLAGS="-g -O2"
-CXXFLAGS="-g -O2"
+        0|1)
+            echo "CMake $CMAKE_VERSION" is too old 1>&2
+            ;;
 
-#
-# To make this work on Leopard (rather than working *on* Snow Leopard
-# when building *for* Leopard) will take more work.
-#
-# For one thing, Leopard's /usr/X11/lib/libXdamage.la claims, at least
-# with all software updates applied, that the Xdamage shared library
-# is libXdamage.1.0.0.dylib, but it is, in fact, libXdamage.1.1.0.dylib.
-# This causes problems when building GTK+, so the script would have to
-# fix that file.
-#
-if [[ $DARWIN_MAJOR_VERSION -le 9 ]]; then
-    echo "This script does not support any versions of OS X before Snow Leopard" 1>&2 
-    exit 1
-fi
+        2)
+            #
+            # Download the DMG, run the installer.
+            #
+            [ -f cmake-$CMAKE_VERSION-Darwin64-universal.dmg ] || curl -O https://cmake.org/files/v$CMAKE_MAJOR_MINOR_VERSION/cmake-$CMAKE_VERSION-Darwin64-universal.dmg || exit 1
+            sudo hdiutil attach cmake-$CMAKE_VERSION-Darwin64-universal.dmg || exit 1
+            sudo installer -target / -pkg /Volumes/cmake-$CMAKE_VERSION-Darwin64-universal/cmake-$CMAKE_VERSION-Darwin64-universal.pkg || exit 1
+            sudo hdiutil detach /Volumes/cmake-$CMAKE_VERSION-Darwin64-universal
+            ;;
 
-# if no make options are present, set default options
-if [ -z "$MAKE_BUILD_OPTS" ] ; then
-    # by default use 1.5x number of cores for parallel build
-    MAKE_BUILD_OPTS="-j $(( $(sysctl -n hw.logicalcpu) * 3 / 2))"
-fi
+        3)
+            #
+            # Download the DMG and do a drag install, where "drag" means
+            # "mv".
+            #
+            # 3.0.* and 3.1.0 have a Darwin64-universal DMG.
+            # 3.1.1 and later have a Darwin-x86_64 DMG.
+            # Probably not many people are still developing on 32-bit
+            # Macs, so we don't worry about them.
+            #
+            if [ "$CMAKE_MINOR_VERSION" = 0 -o \
+                 "$CMAKE_VERSION" = 3.1.0 ]; then
+                type="Darwin64-universal"
+            else
+                type="Darwin-x86_64"
+            fi
+            [ -f cmake-$CMAKE_VERSION-$type.dmg ] || curl -O https://cmake.org/files/v$CMAKE_MAJOR_MINOR_VERSION/cmake-$CMAKE_VERSION-$type.dmg || exit 1
+            sudo hdiutil attach cmake-$CMAKE_VERSION-$type.dmg || exit 1
+            sudo ditto /Volumes/cmake-$CMAKE_VERSION-$type/CMake.app /Applications/CMake.app || exit 1
 
-#
-# If we have a target release, look for its SDK, and build libraries
-# against it rather than against the headers and, more importantly,
-# libraries that come with the OS, so that we don't end up with
-# support libraries that only work on the OS version on which
-# we built them, not earlier versions of the same release, or
-# earlier releases if the minimum is earlier.
-#
-if [ ! -z "$min_osx_target" ]
-then
-    for i in /Developer/SDKs \
-        /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs \
-        /Library/Developer/CommandLineTools/SDKs
-    do
-        if [ -d "$i"/"MacOSX$min_osx_target.sdk" ]
-        then
-            SDKPATH="$i"/"MacOSX$min_osx_target.sdk"
-            break
+            #
+            # Plant the appropriate symbolic links in /usr/local/bin.
+            # It's a drag-install, so there's no installer to make them,
+            # and the CMake code to put them in place is lame, as
+            #
+            #    1) it defaults to /usr/bin, not /usr/local/bin;
+            #    2) it doesn't request the necessary root privileges;
+            #    3) it can't be run from the command line;
+            #
+            # so we do it ourselves.
+            #
+            for i in ccmake cmake cmake-gui cmakexbuild cpack ctest
+            do
+                sudo ln -s /Applications/CMake.app/Contents/bin/$i /usr/local/bin/$i
+            done
+            sudo hdiutil detach /Volumes/cmake-$CMAKE_VERSION-$type
+            ;;
+
+        *)
+            ;;
+        esac
+        touch cmake-$CMAKE_VERSION-done
+    fi
+}
+
+uninstall_cmake() {
+    if [ ! -z "$installed_cmake_version" ]; then
+        echo "Uninstalling CMake:"
+        installed_cmake_major_version="`expr $installed_cmake_version : '\([0-9][0-9]*\).*'`"
+        case "$installed_cmake_major_version" in
+
+        0|1)
+            echo "CMake $installed_cmake_version" is too old 1>&2
+            ;;
+
+        2)
+            sudo rm -rf "/Applications/CMake "`echo "$installed_cmake_version" | sed 's/\([0-9][0-9]*\)\.\([0-9][0-9]*\)\.\([0-9][0-9]*\).*/\1.\2-\3/'`.app
+            for i in ccmake cmake cmake-gui cmakexbuild cpack ctest
+            do
+                sudo rm -f /usr/bin/$i /usr/local/bin/$i
+            done
+            sudo pkgutil --forget com.Kitware.CMake
+            rm cmake-$installed_cmake_version-done
+            ;;
+
+        3)
+            sudo rm -rf /Applications/CMake.app
+            for i in ccmake cmake cmake-gui cmakexbuild cpack ctest
+            do
+                sudo rm -f /usr/local/bin/$i
+            done
+            rm cmake-$installed_cmake_version-done
+            ;;
+        esac
+
+        if [ "$#" -eq 1 -a "$1" = "-r" ] ; then
+            #
+            # Get rid of the previously downloaded and unpacked version,
+            # whatever it might happen to be called.
+            #
+            rm -f cmake-$installed_cmake_version-Darwin64-universal.dmg
+            rm -f cmake-$installed_cmake_version-Darwin-x86_64.dmg
         fi
-    done
 
-    if [ -z "$SDKPATH" ]
-    then
-        echo "macosx-setup.sh: Couldn't find the SDK for OS X $min_osx_target" 1>&2
-        exit 1
+        installed_cmake_version=""
     fi
+}
 
-    #
-    # Make sure there are links to /usr/local/include and /usr/local/lib
-    # in the SDK's usr/local.
-    #
-    if [ ! -e $SDKPATH/usr/local/include ]
-    then
-        if [ ! -d $SDKPATH/usr/local ]
-        then
-            sudo mkdir $SDKPATH/usr/local
-        fi
-        sudo ln -s /usr/local/include $SDKPATH/usr/local/include
+install_gettext() {
+    if [ ! -f gettext-$GETTEXT_VERSION-done ] ; then
+        echo "Downloading, building, and installing GNU gettext:"
+        [ -f gettext-$GETTEXT_VERSION.tar.gz ] || curl -O http://ftp.gnu.org/pub/gnu/gettext/gettext-$GETTEXT_VERSION.tar.gz || exit 1
+        gzcat gettext-$GETTEXT_VERSION.tar.gz | tar xf - || exit 1
+        cd gettext-$GETTEXT_VERSION
+        CFLAGS="$CFLAGS -D_FORTIFY_SOURCE=0 $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" ./configure || exit 1
+        make $MAKE_BUILD_OPTS || exit 1
+        $DO_MAKE_INSTALL || exit 1
+        cd ..
+       touch gettext-$GETTEXT_VERSION-done
     fi
-    if [ ! -e $SDKPATH/usr/local/lib ]
-    then
-        if [ ! -d $SDKPATH/usr/local ]
-        then
-            sudo mkdir $SDKPATH/usr/local
+}
+
+uninstall_gettext() {
+    if [ ! -z "$installed_gettext_version" ] ; then
+        #
+        # GLib depends on this, so uninstall it.
+        #
+        uninstall_glib "$@"
+
+        echo "Uninstalling GNU gettext:"
+        cd gettext-$installed_gettext_version
+        $DO_MAKE_UNINSTALL || exit 1
+        make distclean || exit 1
+        cd ..
+        rm gettext-$installed_gettext_version-done
+
+        if [ "$#" -eq 1 -a "$1" = "-r" ] ; then
+            #
+            # Get rid of the previously downloaded and unpacked version.
+            #
+            rm -rf gettext-$installed_gettext_version
+            rm -rf gettext-$installed_gettext_version.tar.gz
         fi
-        sudo ln -s /usr/local/lib $SDKPATH/usr/local/lib
+
+        installed_gettext_version=""
     fi
+}
 
-    #
-    # Set the minimum OS version for which to build to the specified
-    # minimum target OS version, so we don't, for example, end up using
-    # linker features supported by the OS verson on which we're building
-    # but not by the target version.
-    #
-    VERSION_MIN_FLAGS="-mmacosx-version-min=$min_osx_target"
+install_pkg_config() {
+    if [ ! -f pkg-config-$PKG_CONFIG_VERSION-done ] ; then
+        echo "Downloading, building, and installing pkg-config:"
+        [ -f pkg-config-$PKG_CONFIG_VERSION.tar.gz ] || curl -O http://pkgconfig.freedesktop.org/releases/pkg-config-$PKG_CONFIG_VERSION.tar.gz || exit 1
+        gzcat pkg-config-$PKG_CONFIG_VERSION.tar.gz | tar xf - || exit 1
+        cd pkg-config-$PKG_CONFIG_VERSION
+        ./configure --with-internal-glib || exit 1
+        make $MAKE_BUILD_OPTS || exit 1
+        $DO_MAKE_INSTALL || exit 1
+        cd ..
+        touch pkg-config-$PKG_CONFIG_VERSION-done
+    fi
+}
 
-    #
-    # Compile and link against the SDK.
-    #
-    SDKFLAGS="-isysroot $SDKPATH"
+uninstall_pkg_config() {
+    if [ ! -z "$installed_pkg_config_version" ] ; then
+        echo "Uninstalling pkg-config:"
+        cd pkg-config-$installed_pkg_config_version
+        $DO_MAKE_UNINSTALL || exit 1
+        make distclean || exit 1
+        cd ..
+        rm pkg-config-$installed_pkg_config_version-done
 
-    if [[ "$min_osx_target" == "10.5" ]]
-    then
-        #
-        # Cairo is part of Mac OS X 10.6 and later.
-        # The *headers* are supplied by 10.5, but the *libraries*
-        # aren't, so we have to build it if we're building for 10.5.
-        #
-        cairo_not_in_the_os=yes
+        if [ "$#" -eq 1 -a "$1" = "-r" ] ; then
+            #
+            # Get rid of the previously downloaded and unpacked version.
+            #
+            rm -rf pkg-config-$installed_pkg_config_version
+            rm -rf pkg-config-$installed_pkg_config_version.tar.gz
+        fi
 
+        installed_pkg_config_version=""
+    fi
+}
+
+install_glib() {
+    if [ ! -f glib-$GLIB_VERSION-done ] ; then
+        echo "Downloading, building, and installing GLib:"
+        glib_dir=`expr $GLIB_VERSION : '\([0-9][0-9]*\.[0-9][0-9]*\).*'`
+        GLIB_MAJOR_VERSION="`expr $GLIB_VERSION : '\([0-9][0-9]*\).*'`"
+        GLIB_MINOR_VERSION="`expr $GLIB_VERSION : '[0-9][0-9]*\.\([0-9][0-9]*\).*'`"
+        GLIB_DOTDOT_VERSION="`expr $GLIB_VERSION : '[0-9][0-9]*\.[0-9][0-9]*\.\([0-9][0-9]*\).*'`"
+        if [[ $GLIB_MAJOR_VERSION -gt 2 ||
+              $GLIB_MINOR_VERSION -gt 28 ||
+              ($GLIB_MINOR_VERSION -eq 28 && $GLIB_DOTDOT_VERSION -ge 8) ]]
+        then
+            #
+            # Starting with GLib 2.28.8, xz-compressed tarballs are available.
+            #
+            [ -f glib-$GLIB_VERSION.tar.xz ] || curl -L -O http://ftp.gnome.org/pub/gnome/sources/glib/$glib_dir/glib-$GLIB_VERSION.tar.xz || exit 1
+            xzcat glib-$GLIB_VERSION.tar.xz | tar xf - || exit 1
+        else
+            [ -f glib-$GLIB_VERSION.tar.bz2 ] || curl -L -O http://ftp.gnome.org/pub/gnome/sources/glib/$glib_dir/glib-$GLIB_VERSION.tar.bz2 || exit 1
+            bzcat glib-$GLIB_VERSION.tar.bz2 | tar xf - || exit 1
+        fi
+        cd glib-$GLIB_VERSION
         #
-        # Build with older versions of the support libraries, as
-        # were used on the Wireshark Leopard buildbot at one
-        # point.  (Most of these versions come from the About page
-        # from Wireshark 1.8.6, the last build done on that buildbot;
-        # the ATK version isn't reported, so this is a guess.)
-        #
-        # If you want to try building with newer versions of
-        # the libraries, note that:
+        # OS X ships with libffi, but doesn't provide its pkg-config file;
+        # explicitly specify LIBFFI_CFLAGS and LIBFFI_LIBS, so the configure
+        # script doesn't try to use pkg-config to get the appropriate
+        # C flags and loader flags.
         #
-        # The version of fontconfig that comes with Leopard doesn't
-        # support FC_WEIGHT_EXTRABLACK, so we can't use any version
-        # of Pango newer than 1.22.4.
+        # And, what's worse, at least with the version of Xcode that comes
+        # with Leopard, /usr/include/ffi/fficonfig.h doesn't define MACOSX,
+        # which causes the build of GLib to fail.  If we don't find
+        # "#define.*MACOSX" in /usr/include/ffi/fficonfig.h, explicitly
+        # define it.
         #
-        # However, Pango 1.22.4 doesn't work with versions of GLib
-        # after 2.29.6, because Pango 1.22.4 uses G_CONST_RETURN and
-        # GLib 2.29.8 and later deprecate it (there doesn't appear to
-        # be a GLib 2.29.7).  That means we'd either have to patch
-        # Pango not to use it (just use "const"; G_CONST_RETURN was
-        # there to allow code to choose whether to use "const" or not),
-        # or use GLib 2.29.6 or earlier.
+        # While we're at it, suppress -Wformat-nonliteral to avoid a case
+        # where clang's stricter rules on when not to complain about
+        # non-literal format arguments cause it to complain about code
+        # that's safe but it wasn't told that.  See my comment #25 in
+        # GNOME bug 691608:
         #
-        # GLib 2.29.6 includes an implementation of g_bit_lock() that,
-        # on x86 (32-bit and 64-bit), uses asms in a fashion
-        # ("asm volatile goto") that requires GCC 4.5 or later, which
-        # is later than the compilers that come with Leopard and Snow
-        # Leopard.  Recent versions of GLib check for that, but 2.29.6
-        # doesn't, so, if you want to build GLib 2.29.6 on Leopard or
-        # Snow Leopard, you would have to patch glib/gbitlock.c to do
-        # what the newer versions of GLib do:
+        #    https://bugzilla.gnome.org/show_bug.cgi?id=691608#c25
         #
-        #  define a USE_ASM_GOTO macro that indicates whether "asm goto"
-        #  can be used:
-        #    #if (defined (i386) || defined (__amd64__))
-        #      #if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5)
-        #        #define USE_ASM_GOTO 1
-        #      #endif
-        #    #endif
+        # First, determine where the system include files are.  (It's not
+        # necessarily /usr/include.)  There's a bit of a greasy hack here;
+        # pre-5.x versions of the developer tools don't support the
+        # --show-sdk-path option, and will produce no output, so includedir
+        # will be set to /usr/include (in those older versions of the
+        # developer tools, there is a /usr/include directory).
         #
-        #  replace all occurrences of
+        includedir=`xcrun --show-sdk-path 2>/dev/null`/usr/include
+        if grep -qs '#define.*MACOSX' $includedir/ffi/fficonfig.h
+        then
+            # It's defined, nothing to do
+            LIBFFI_CFLAGS="-I $includedir/ffi" LIBFFI_LIBS="-lffi" CFLAGS="$CFLAGS -Wno-format-nonliteral $VERSION_MIN_FLAGS $SDKFLAGS" CXXFLAGS="$CXXFLAGS -Wno-format-nonliteral $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" ./configure || exit 1
+        else
+            LIBFFI_CFLAGS="-I $includedir/ffi" LIBFFI_LIBS="-lffi" CFLAGS="$CFLAGS -DMACOSX -Wno-format-nonliteral $VERSION_MIN_FLAGS $SDKFLAGS" CXXFLAGS="$CXXFLAGS -DMACOSX -Wno-format-nonliteral $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" ./configure || exit 1
+        fi
+
         #
-        #    #if defined (__GNUC__) && (defined (i386) || defined (__amd64__))
+        # Apply the fix to GNOME bug 529806:
         #
-        #  with
+        #    https://bugzilla.gnome.org/show_bug.cgi?id=529806
         #
-        #    #ifdef USE_ASM_GOTO
+        # if we have a version of GLib prior to 2.30.
         #
-        # Using GLib 2.29.6 or earlier, however, means that we can't
-        # use a version of ATK later than 2.3.93, as those versions
-        # don't work with GLib 2.29.6.  The same applies to gdk-pixbuf;
-        # versions of gdk-pixbuf after 2.24.1 won't work with GLib
-        # 2.29.6.
+        if [[ $GLIB_MAJOR_VERSION -eq 2 && $GLIB_MINOR_VERSION -le 30 ]]
+        then
+            patch -p0 <../../macosx-support-lib-patches/glib-gconvert.c.patch || exit 1
+        fi
+        make $MAKE_BUILD_OPTS || exit 1
+        $DO_MAKE_INSTALL || exit 1
+        cd ..
+        touch glib-$GLIB_VERSION-done
+    fi
+}
+
+uninstall_glib() {
+    if [ ! -z "$installed_glib_version" ] ; then
         #
-        # Then you have to make sure that what you've build doesn't
-        # cause the X server that comes with Leopard to crash; at
-        # least one attempt at building for Leopard did.
+        # ATK, Pango, and GTK depend on this, so uninstall them.
         #
-        # At least if building on Leopard, you might also find
-        # that, with various older versions of Cairo, including
-        # 1.6.4 and at least some 1.8.x versions, when you try to
-        # build it, the build fails because it can't find
-        # png_set_longjmp_fn().  I vaguely remember dealing with that,
-        # ages ago, but don't remember what I did.
+        uninstall_gtk
+        uninstall_pango
+        uninstall_atk
+
+        echo "Uninstalling GLib:"
+        cd glib-$installed_glib_version
+        $DO_MAKE_UNINSTALL || exit 1
+        make distclean || exit 1
+        cd ..
+        rm glib-$installed_glib_version-done
+
+        if [ "$#" -eq 1 -a "$1" = "-r" ] ; then
+            #
+            # Get rid of the previously downloaded and unpacked version.
+            #
+            rm -rf glib-$installed_glib_version
+            rm -rf glib-$installed_glib_version.tar.xz glib-$installed_glib_version.tar.bz2
+        fi
+
+        installed_glib_version=""
+    fi
+}
+
+install_qt() {
+    if [ "$QT_VERSION" -a ! -f qt-$QT_VERSION-done ]; then
+        echo "Downloading, building, and installing Qt:"
         #
-        GLIB_VERSION=2.16.3
-        CAIRO_VERSION=1.6.4
-        ATK_VERSION=1.24.0
-        PANGO_VERSION=1.20.2
-        GTK_VERSION=2.12.9
+        # What you get for this URL might just be a 302 Found reply, so use
+        # -L so we get redirected.
+        #
+        if [ "$QT_MAJOR_VERSION" -ge 5 ]
+        then
+            QT_VOLUME=qt-opensource-mac-x64-clang-$QT_VERSION
+        else
+            QT_VOLUME=qt-opensource-mac-$QT_VERSION
+        fi
+        [ -f $QT_VOLUME.dmg ] || curl -L -O http://download.qt.io/archive/qt/$QT_MAJOR_MINOR_VERSION/$QT_MAJOR_MINOR_DOTDOT_VERSION/$QT_VOLUME.dmg || exit 1
+        sudo hdiutil attach $QT_VOLUME.dmg || exit 1
+
+        if [ "$QT_MAJOR_VERSION" -ge 5 ]
+        then
+            #
+            # Run the installer executable directly, so that we wait for
+            # it to finish.  Then unmount the volume.
+            #
+            /Volumes/$QT_VOLUME/$QT_VOLUME.app/Contents/MacOS/$QT_VOLUME
+            sudo hdiutil detach /Volumes/$QT_VOLUME
+        else
+            #
+            # Open the installer package; use -W, so that we wait for
+            # the installer to finish.  Then unmount the volume.
+            #
+            open -W "/Volumes/Qt $QT_MAJOR_MINOR_DOTDOT_VERSION/Qt.mpkg"
+            sudo hdiutil detach "/Volumes/Qt $QT_MAJOR_MINOR_DOTDOT_VERSION"
+        fi
 
         #
-        # That version of GTK+ includes gdk-pixbuf.
-        # XXX - base this on the version of GTK+ requested.
+        # Versions 5.3.x through 5.5.0, at least, have bogus .pc files.
+        # See bugs QTBUG-35256 and QTBUG-47162.
         #
-        GDK_PIXBUF_VERSION=
+        # Fix the files.
+        #
+        for i in $HOME/Qt$QT_VERSION/$QT_MAJOR_MINOR_VERSION/clang_64/lib/pkgconfig/*.pc
+        do
+            ed - $i <<EOF
+H
+g/Cflags: /s;;Cflags: -F\${libdir} ;
+g/Cflags: /s;-I\${includedir}/Qt\([a-zA-Z0-9_]*\);-I\${libdir}/Qt\1.framework/Versions/5/Headers;
+g/Libs: /s;';;g
+w
+q
+EOF
+        done
+        touch qt-$QT_VERSION-done
+    fi
+}
+
+uninstall_qt() {
+    if [ ! -z "$installed_qt_version" ] ; then
+        echo "Uninstalling Qt:"
+        rm -rf $HOME/Qt$installed_qt_version
+        rm qt-$installed_qt_version-done
+
+        if [ "$#" -eq 1 -a "$1" = "-r" ] ; then
+            #
+            # Get rid of the previously downloaded version.
+            #
+            rm -rf qt-opensource-mac-x64-clang-$installed_qt_version.dmg
+        fi
+
+        installed_qt_version=""
+    fi
+}
 
+install_libpng() {
+    if [ ! -f libpng-$PNG_VERSION-done ] ; then
+        echo "Downloading, building, and installing libpng:"
         #
-        # Libgcrypt 1.5.0 fails to compile due to some problem with an
-        # asm in rijndael.c, at least with i686-apple-darwin10-gcc-4.2.1
-        # (GCC) 4.2.1 (Apple Inc. build 5666) (dot 3) when building
-        # 32-bit.
+        # The FTP site puts libpng x.y.* into a libpngxy directory.
         #
-        # We try libgcrypt 1.4.3 instead, as that's what shows up in
-        # the version from the Leopard buildbot.
-        LIBGCRYPT_VERSION=1.4.3
+        subdir=`echo $PNG_VERSION | sed 's/\([1-9][0-9]*\)\.\([1-9][0-9]*\).*/libpng\1\2'/`
+        [ -f libpng-$PNG_VERSION.tar.xz ] || curl -O ftp://ftp.simplesystems.org/pub/libpng/png/src/$subdir/libpng-$PNG_VERSION.tar.xz
+        xzcat libpng-$PNG_VERSION.tar.xz | tar xf - || exit 1
+        cd libpng-$PNG_VERSION
+        CFLAGS="$CFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" CXXFLAGS="$CXXFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" ./configure || exit 1
+        make $MAKE_BUILD_OPTS || exit 1
+        $DO_MAKE_INSTALL || exit 1
+        cd ..
+        touch libpng-$PNG_VERSION-done
+    fi
+}
 
+uninstall_libpng() {
+    if [ ! -z "$installed_libpng_version" ] ; then
         #
-        # Build 32-bit while we're at it; Leopard has a bug that
-        # causes some BPF functions not to work with 64-bit userland
-        # code, so capturing won't work.
+        # Cairo depends on this, so uninstall it.
+        #
+        uninstall_cairo "$@"
+
+        echo "Uninstalling libpng:"
+        cd libpng-$installed_libpng_version
+        $DO_MAKE_UNINSTALL || exit 1
+        make distclean || exit 1
+        cd ..
+        rm libpng-$installed_libpng_version-done
+
+        if [ "$#" -eq 1 -a "$1" = "-r" ] ; then
+            #
+            # Get rid of the previously downloaded and unpacked version.
+            #
+            rm -rf libpng-$installed_libpng_version
+            rm -rf libpng-$installed_libpng_version.tar.xz
+        fi
+
+        installed_libpng_version=""
+    fi
+}
+
+install_pixman() {
+    if [ ! -f pixman-$PIXMAN_VERSION-done ] ; then
+        echo "Downloading, building, and installing pixman:"
+        [ -f pixman-$PIXMAN_VERSION.tar.gz ] || curl -O http://www.cairographics.org/releases/pixman-$PIXMAN_VERSION.tar.gz
+        gzcat pixman-$PIXMAN_VERSION.tar.gz | tar xf - || exit 1
+        cd pixman-$PIXMAN_VERSION
+        CFLAGS="$CFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" CXXFLAGS="$CXXFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" ./configure || exit 1
+        make $MAKE_BUILD_OPTS || exit 1
+        $DO_MAKE_INSTALL || exit 1
+        cd ..
+        touch pixman-$PIXMAN_VERSION-done
+    fi
+}
+
+uninstall_pixman() {
+    if [ ! -z "$installed_pixman_version" ] ; then
+        #
+        # Cairo depends on this, so uninstall it.
+        #
+        uninstall_cairo "$@"
+
+        echo "Uninstalling pixman:"
+        cd pixman-$installed_pixman_version
+        $DO_MAKE_UNINSTALL || exit 1
+        make distclean || exit 1
+        cd ..
+        rm pixman-$installed_pixman_version-done
+
+        if [ "$#" -eq 1 -a "$1" = "-r" ] ; then
+            #
+            # Get rid of the previously downloaded and unpacked version.
+            #
+            rm -rf pixman-$installed_pixman_version
+            rm -rf pixman-$installed_pixman_version.tar.gz
+        fi
+
+        installed_pixman_version=""
+    fi
+}
+
+install_cairo() {
+    if [ ! -f cairo-$CAIRO_VERSION-done ] ; then
+        echo "Downloading, building, and installing Cairo:"
+        CAIRO_MAJOR_VERSION="`expr $CAIRO_VERSION : '\([0-9][0-9]*\).*'`"
+        CAIRO_MINOR_VERSION="`expr $CAIRO_VERSION : '[0-9][0-9]*\.\([0-9][0-9]*\).*'`"
+        CAIRO_DOTDOT_VERSION="`expr $CAIRO_VERSION : '[0-9][0-9]*\.[0-9][0-9]*\.\([0-9][0-9]*\).*'`"
+        if [[ $CAIRO_MAJOR_VERSION -gt 1 ||
+              $CAIRO_MINOR_VERSION -gt 12 ||
+              ($CAIRO_MINOR_VERSION -eq 12 && $CAIRO_DOTDOT_VERSION -ge 2) ]]
+        then
+            #
+            # Starting with Cairo 1.12.2, the tarballs are compressed with
+            # xz rather than gzip.
+            #
+            [ -f cairo-$CAIRO_VERSION.tar.xz ] || curl -O http://cairographics.org/releases/cairo-$CAIRO_VERSION.tar.xz || exit 1
+            xzcat cairo-$CAIRO_VERSION.tar.xz | tar xf - || exit 1
+        else
+            [ -f cairo-$CAIRO_VERSION.tar.gz ] || curl -O http://cairographics.org/releases/cairo-$CAIRO_VERSION.tar.gz || exit 1
+            gzcat cairo-$CAIRO_VERSION.tar.gz | tar xf - || exit 1
+        fi
+        cd cairo-$CAIRO_VERSION
+        # CFLAGS="$CFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" CXXFLAGS="$CXXFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" ./configure --enable-quartz=no || exit 1
+        # Maybe follow http://cairographics.org/end_to_end_build_for_mac_os_x/
+        CFLAGS="$CFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" CXXFLAGS="$CXXFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" ./configure --enable-quartz=yes || exit 1
+        #
+        # We must avoid the version of libpng that comes with X11; the
+        # only way I've found to force that is to forcibly set INCLUDES
+        # when we do the build, so that this comes before CAIRO_CFLAGS,
+        # which has -I/usr/X11/include added to it before anything
+        # connected to libpng is.
+        #
+        INCLUDES="-I/usr/local/include/libpng15" make $MAKE_BUILD_OPTS || exit 1
+        $DO_MAKE_INSTALL || exit 1
+        cd ..
+        touch cairo-$CAIRO_VERSION-done
+    fi
+}
+
+uninstall_cairo() {
+    if [ ! -z "$installed_cairo_version" ] ; then
+        #
+        # GTK+ depends on this, so uninstall it.
+        #
+        uninstall_gtk "$@"
+
+        echo "Uninstalling Cairo:"
+        cd cairo-$installed_cairo_version
+        $DO_MAKE_UNINSTALL || exit 1
+        make distclean || exit 1
+        cd ..
+        rm cairo-$installed_cairo_version-done
+
+        if [ "$#" -eq 1 -a "$1" = "-r" ] ; then
+            #
+            # Get rid of the previously downloaded and unpacked version.
+            #
+            rm -rf cairo-$installed_cairo_version
+            rm -rf cairo-$installed_cairo_version.tar.xz cairo-$installed_cairo_version.tar.gz
+        fi
+
+        installed_cairo_version=""
+    fi
+}
+
+install_atk() {
+    if [ ! -f atk-$ATK_VERSION-done ] ; then
+        echo "Downloading, building, and installing ATK:"
+        atk_dir=`expr $ATK_VERSION : '\([0-9][0-9]*\.[0-9][0-9]*\).*'`
+        ATK_MAJOR_VERSION="`expr $ATK_VERSION : '\([0-9][0-9]*\).*'`"
+        ATK_MINOR_VERSION="`expr $ATK_VERSION : '[0-9][0-9]*\.\([0-9][0-9]*\).*'`"
+        ATK_DOTDOT_VERSION="`expr $ATK_VERSION : '[0-9][0-9]*\.[0-9][0-9]*\.\([0-9][0-9]*\).*'`"
+        if [[ $ATK_MAJOR_VERSION -gt 2 ||
+              ($ATK_MAJOR_VERSION -eq 2 && $ATK_MINOR_VERSION -gt 0) ||
+              ($ATK_MANOR_VERSION -eq 2 && $ATK_MINOR_VERSION -eq 0 && $ATK_DOTDOT_VERSION -ge 1) ]]
+        then
+            #
+            # Starting with ATK 2.0.1, xz-compressed tarballs are available.
+            #
+            [ -f atk-$ATK_VERSION.tar.xz ] || curl -O http://ftp.gnome.org/pub/gnome/sources/atk/$atk_dir/atk-$ATK_VERSION.tar.xz || exit 1
+            xzcat atk-$ATK_VERSION.tar.xz | tar xf - || exit 1
+        else
+            [ -f atk-$ATK_VERSION.tar.bz2 ] || curl -O http://ftp.gnome.org/pub/gnome/sources/atk/$atk_dir/atk-$ATK_VERSION.tar.bz2 || exit 1
+            bzcat atk-$ATK_VERSION.tar.bz2 | tar xf - || exit 1
+        fi
+        cd atk-$ATK_VERSION
+        CFLAGS="$CFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" CXXFLAGS="$CXXFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" ./configure || exit 1
+        make $MAKE_BUILD_OPTS || exit 1
+        $DO_MAKE_INSTALL || exit 1
+        cd ..
+        touch atk-$ATK_VERSION-done
+    fi
+}
+
+uninstall_atk() {
+    if [ ! -z "$installed_atk_version" ] ; then
+        #
+        # GTK+ depends on this, so uninstall it.
+        #
+        uninstall_gtk "$@"
+
+        echo "Uninstalling ATK:"
+        cd atk-$installed_atk_version
+        $DO_MAKE_UNINSTALL || exit 1
+        make distclean || exit 1
+        cd ..
+        rm atk-$installed_atk_version-done
+
+        if [ "$#" -eq 1 -a "$1" = "-r" ] ; then
+            #
+            # Get rid of the previously downloaded and unpacked version.
+            #
+            rm -rf atk-$installed_atk_version
+            rm -rf atk-$installed_atk_version.tar.xz atk-$installed_atk_version.tar.bz2
+        fi
+
+        installed_atk_version=""
+    fi
+}
+
+install_pango() {
+    if [ ! -f pango-$PANGO_VERSION-done ] ; then
+        echo "Downloading, building, and installing Pango:"
+        pango_dir=`expr $PANGO_VERSION : '\([0-9][0-9]*\.[0-9][0-9]*\).*'`
+        PANGO_MAJOR_VERSION="`expr $PANGO_VERSION : '\([0-9][0-9]*\).*'`"
+        PANGO_MINOR_VERSION="`expr $PANGO_VERSION : '[0-9][0-9]*\.\([0-9][0-9]*\).*'`"
+        if [[ $PANGO_MAJOR_VERSION -gt 1 ||
+              $PANGO_MINOR_VERSION -ge 29 ]]
+        then
+            #
+            # Starting with Pango 1.29, the tarballs are compressed with
+            # xz rather than bzip2.
+            #
+            [ -f pango-$PANGO_VERSION.tar.xz ] || curl -L -O http://ftp.gnome.org/pub/gnome/sources/pango/$pango_dir/pango-$PANGO_VERSION.tar.xz || exit 1
+            xzcat pango-$PANGO_VERSION.tar.xz | tar xf - || exit 1
+        else
+            [ -f pango-$PANGO_VERSION.tar.bz2 ] || curl -L -O http://ftp.gnome.org/pub/gnome/sources/pango/$pango_dir/pango-$PANGO_VERSION.tar.bz2 || exit 1
+            bzcat pango-$PANGO_VERSION.tar.bz2 | tar xf - || exit 1
+        fi
+        cd pango-$PANGO_VERSION
+        CFLAGS="$CFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" CXXFLAGS="$CXXFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" ./configure || exit 1
+        make $MAKE_BUILD_OPTS || exit 1
+        $DO_MAKE_INSTALL || exit 1
+        cd ..
+        touch pango-$PANGO_VERSION-done
+    fi
+}
+
+uninstall_pango() {
+    if [ ! -z "$installed_pango_version" ] ; then
+        #
+        # GTK+ depends on this, so uninstall it.
+        #
+        uninstall_gtk "$@"
+
+        echo "Uninstalling Pango:"
+        cd pango-$installed_pango_version
+        $DO_MAKE_UNINSTALL || exit 1
+        make distclean || exit 1
+        cd ..
+        rm pango-$installed_pango_version-done
+
+        if [ "$#" -eq 1 -a "$1" = "-r" ] ; then
+            #
+            # Get rid of the previously downloaded and unpacked version.
+            #
+            rm -rf pango-$installed_pango_version
+            rm -rf pango-$installed_pango_version.tar.xz pango-$installed_pango_version.tar.bz2
+        fi
+
+        installed_pango_version=""
+    fi
+}
+
+install_gdk_pixbuf() {
+    if [ "$GDK_PIXBUF_VERSION" -a ! -f gdk-pixbuf-$GDK_PIXBUF_VERSION-done ] ; then
+        echo "Downloading, building, and installing gdk-pixbuf:"
+        gdk_pixbuf_dir=`expr $GDK_PIXBUF_VERSION : '\([0-9][0-9]*\.[0-9][0-9]*\).*'`
+        [ -f gdk-pixbuf-$GDK_PIXBUF_VERSION.tar.xz ] || curl -L -O http://ftp.gnome.org/pub/gnome/sources/gdk-pixbuf/$gdk_pixbuf_dir/gdk-pixbuf-$GDK_PIXBUF_VERSION.tar.xz || exit 1
+        xzcat gdk-pixbuf-$GDK_PIXBUF_VERSION.tar.xz | tar xf - || exit 1
+        cd gdk-pixbuf-$GDK_PIXBUF_VERSION
+        #
+        # If we're building using the 10.6 SDK, force the use of libpng12.
+        #
+        # The OS's X11, and corresponding SDK, didn't introduce libpng15,
+        # or pkg-config files, until 10.7, so, for 10.6 have to explicitly
+        # set LIBPNG to override the configure script, and also force the
+        # CFLAGS to look for the header files for libpng12 (note that
+        # -isysroot doesn't affect the arguments to -I, so we need to
+        # include the SDK path explicitly).
+        #
+        if [[ "$sdk_target" = 10.6 ]]
+        then
+            LIBPNG="-L/usr/X11/lib -lpng12" CFLAGS="$CFLAGS $VERSION_MIN_FLAGS $SDKFLAGS -I$SDKPATH/usr/X11/include/libpng12" CXXFLAGS="$CXXFLAGS $VERSION_MIN_FLAGS $SDKFLAGS -I$SDKPATH/usr/X11/include/libpng12" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" ./configure --without-libtiff --without-libjpeg || exit 1
+        else
+            CFLAGS="$CFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" CXXFLAGS="$CXXFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" ./configure --without-libtiff --without-libjpeg || exit 1
+        fi
+        make $MAKE_BUILD_OPTS || exit 1
+        $DO_MAKE_INSTALL || exit 1
+        cd ..
+        touch gdk-pixbuf-$GDK_PIXBUF_VERSION-done
+    fi
+}
+
+uninstall_gdk_pixbuf() {
+    if [ ! -z "$installed_gdk_pixbuf_version" ] ; then
+        #
+        # GTK+ depends on this, so uninstall it.
+        #
+        uninstall_gtk "$@"
+
+        echo "Uninstalling gdk-pixbuf:"
+        cd gdk-pixbuf-$installed_gdk_pixbuf_version
+        $DO_MAKE_UNINSTALL || exit 1
+        make distclean || exit 1
+        cd ..
+        rm gdk-pixbuf-$installed_gdk_pixbuf_version-done
+
+        if [ "$#" -eq 1 -a "$1" = "-r" ] ; then
+            #
+            # Get rid of the previously downloaded and unpacked version.
+            #
+            rm -rf gdk-pixbuf-$installed_gdk_pixbuf_version
+            rm -rf gdk-pixbuf-$installed_gdk_pixbuf_version.tar.xz
+        fi
+
+        installed_gdk_pixbuf_version=""
+    fi
+}
+
+install_gtk() {
+    if [ ! -f gtk+-$GTK_VERSION-done ] ; then
+        echo "Downloading, building, and installing GTK+:"
+        gtk_dir=`expr $GTK_VERSION : '\([0-9][0-9]*\.[0-9][0-9]*\).*'`
+        if [[ $GTK_MAJOR_VERSION -gt 2 ||
+              $GTK_MINOR_VERSION -gt 24 ||
+             ($GTK_MINOR_VERSION -eq 24 && $GTK_DOTDOT_VERSION -ge 5) ]]
+        then
+            #
+            # Starting with GTK+ 2.24.5, the tarballs are compressed with
+            # xz rather than gzip, in addition to bzip2; use xz, as we've
+            # built and installed it, and as xz compresses better than
+            # bzip2 so the tarballs take less time to download.
+            #
+            [ -f gtk+-$GTK_VERSION.tar.xz ] || curl -L -O http://ftp.gnome.org/pub/gnome/sources/gtk+/$gtk_dir/gtk+-$GTK_VERSION.tar.xz || exit 1
+            xzcat gtk+-$GTK_VERSION.tar.xz | tar xf - || exit 1
+        else
+            [ -f gtk+-$GTK_VERSION.tar.bz2 ] || curl -L -O http://ftp.gnome.org/pub/gnome/sources/gtk+/$gtk_dir/gtk+-$GTK_VERSION.tar.bz2 || exit 1
+            bzcat gtk+-$GTK_VERSION.tar.bz2 | tar xf - || exit 1
+        fi
+        cd gtk+-$GTK_VERSION
+        if [ $DARWIN_MAJOR_VERSION -ge "12" ]
+        then
+            #
+            # GTK+ 2.24.10, at least, doesn't build on Mountain Lion with the
+            # CUPS printing backend - either the CUPS API changed incompatibly
+            # or the backend was depending on non-API implementation details.
+            #
+            # Configure it out, on Mountain Lion and later, for now.
+            # (12 is the Darwin major version number in Mountain Lion.)
+            #
+            # Also, configure out libtiff and libjpeg; configure scripts
+            # just ignore unknown --enable/--disable and --with/--without
+            # options (at least they've always do so up to now).
+            #
+            CFLAGS="$CFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" CXXFLAGS="$CXXFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" ./configure --disable-cups --without-libtiff --without-libjpeg || exit 1
+        else
+            CFLAGS="$CFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" CXXFLAGS="$CXXFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" ./configure --without-libtiff --without-libjpeg || exit 1
+        fi
+        make $MAKE_BUILD_OPTS || exit 1
+        $DO_MAKE_INSTALL || exit 1
+        cd ..
+        touch gtk+-$GTK_VERSION-done
+    fi
+}
+
+uninstall_gtk() {
+    if [ ! -z "$installed_gtk_version" ] ; then
+        echo "Uninstalling GTK+:"
+        cd gtk+-$installed_gtk_version
+        $DO_MAKE_UNINSTALL || exit 1
+        make distclean || exit 1
+        cd ..
+        rm gtk+-$installed_gtk_version-done
+
+        if [ "$#" -eq 1 -a "$1" = "-r" ] ; then
+            #
+            # Get rid of the previously downloaded and unpacked version.
+            #
+            rm -rf gtk+-$installed_gtk_version
+            rm -rf gtk+-$installed_gtk_version.tar.xz gtk+-$installed_gtk_version.tar.bz2
+        fi
+
+        installed_gtk_version=""
+    fi
+}
+
+install_libsmi() {
+    if [ "$LIBSMI_VERSION" -a ! -f libsmi-$LIBSMI_VERSION-done ] ; then
+        echo "Downloading, building, and installing libsmi:"
+        [ -f libsmi-$LIBSMI_VERSION.tar.gz ] || curl -L -O https://www.ibr.cs.tu-bs.de/projects/libsmi/download/libsmi-$LIBSMI_VERSION.tar.gz || exit 1
+        gzcat libsmi-$LIBSMI_VERSION.tar.gz | tar xf - || exit 1
+        cd libsmi-$LIBSMI_VERSION
+        CFLAGS="$CFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" CXXFLAGS="$CXXFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" ./configure || exit 1
+        make $MAKE_BUILD_OPTS || exit 1
+        $DO_MAKE_INSTALL || exit 1
+        cd ..
+        touch libsmi-$LIBSMI_VERSION-done
+    fi
+}
+
+uninstall_libsmi() {
+    if [ ! -z "$installed_libsmi_version" ] ; then
+        echo "Uninstalling libsmi:"
+        cd libsmi-$installed_libsmi_version
+        $DO_MAKE_UNINSTALL || exit 1
+        make distclean || exit 1
+        cd ..
+        rm libsmi-$installed_libsmi_version-done
+
+        if [ "$#" -eq 1 -a "$1" = "-r" ] ; then
+            #
+            # Get rid of the previously downloaded and unpacked version.
+            #
+            rm -rf libsmi-$installed_libsmi_version
+            rm -rf libsmi-$installed_libsmi_version.tar.gz
+        fi
+
+        installed_libsmi_version=""
+    fi
+}
+
+install_libgpg_error() {
+    if [ "$LIBGPG_ERROR_VERSION" -a ! -f libgpg-error-$LIBGPG_ERROR_VERSION-done ] ; then
+        echo "Downloading, building, and installing libgpg-error:"
+        [ -f libgpg-error-$LIBGPG_ERROR_VERSION.tar.bz2 ] || curl -L -O ftp://ftp.gnupg.org/gcrypt/libgpg-error/libgpg-error-$LIBGPG_ERROR_VERSION.tar.bz2 || exit 1
+        bzcat libgpg-error-$LIBGPG_ERROR_VERSION.tar.bz2 | tar xf - || exit 1
+        cd libgpg-error-$LIBGPG_ERROR_VERSION
+        CFLAGS="$CFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" CXXFLAGS="$CXXFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" ./configure || exit 1
+        make $MAKE_BUILD_OPTS || exit 1
+        $DO_MAKE_INSTALL || exit 1
+        cd ..
+        touch libgpg-error-$LIBGPG_ERROR_VERSION-done
+    fi
+}
+
+uninstall_libgpg_error() {
+    if [ ! -z "$installed_libgpg_error_version" ] ; then
+        #
+        # libgcrypt depends on this, so uninstall it.
+        #
+        uninstall_libgcrypt "$@"
+
+        echo "Uninstalling libgpg-error:"
+        cd libgpg-error-$installed_libgpg_error_version
+        $DO_MAKE_UNINSTALL || exit 1
+        make distclean || exit 1
+        cd ..
+        rm libgpg-error-$installed_libgpg_error_version-done
+
+        if [ "$#" -eq 1 -a "$1" = "-r" ] ; then
+            #
+            # Get rid of the previously downloaded and unpacked version.
+            #
+            rm -rf libgpg-error-$installed_libgpg_error_version
+            rm -rf libgpg-error-$installed_libgpg_error_version.tar.bz2
+        fi
+
+        installed_libgpg_error_version=""
+    fi
+}
+
+install_libgcrypt() {
+    if [ "$LIBGCRYPT_VERSION" -a ! -f libgcrypt-$LIBGCRYPT_VERSION-done ] ; then
+        #
+        # libgpg-error is required for libgcrypt.
+        #
+        if [ -z $LIBGPG_ERROR_VERSION ]
+        then
+            echo "libgcrypt requires libgpg-error, but you didn't install libgpg-error." 1>&2
+            exit 1
+        fi
+
+        echo "Downloading, building, and installing libgcrypt:"
+        [ -f libgcrypt-$LIBGCRYPT_VERSION.tar.gz ] || curl -L -O ftp://ftp.gnupg.org/gcrypt/libgcrypt/libgcrypt-$LIBGCRYPT_VERSION.tar.gz || exit 1
+        gzcat libgcrypt-$LIBGCRYPT_VERSION.tar.gz | tar xf - || exit 1
+        cd libgcrypt-$LIBGCRYPT_VERSION
+        #
+        # The assembler language code is not compatible with the OS X
+        # x86 assembler (or is it an x86-64 vs. x86-32 issue?).
+        #
+        # libgcrypt expects gnu89, not c99/gnu99, semantics for
+        # "inline".  See, for example:
+        #
+        #    http://lists.freebsd.org/pipermail/freebsd-ports-bugs/2010-October/198809.html
+        #
+        CFLAGS="$CFLAGS -std=gnu89 $VERSION_MIN_FLAGS $SDKFLAGS" CFLAGS="$CFLAGS -std=gnu89 $VERSION_MIN_FLAGS $SDKFLAGS" CXXFLAGS="$CXXFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" ./configure --disable-asm || exit 1
+        make $MAKE_BUILD_OPTS || exit 1
+        $DO_MAKE_INSTALL || exit 1
+        cd ..
+        touch libgcrypt-$LIBGCRYPT_VERSION-done
+    fi
+}
+
+uninstall_libgcrypt() {
+    if [ ! -z "$installed_libgcrypt_version" ] ; then
+        #
+        # GnuTLS depends on this, so uninstall it.
+        #
+        uninstall_gnutls "$@"
+
+        echo "Uninstalling libgcrypt:"
+        cd libgcrypt-$installed_libgcrypt_version
+        $DO_MAKE_UNINSTALL || exit 1
+        make distclean || exit 1
+        cd ..
+        rm libgcrypt-$installed_libgcrypt_version-done
+
+        if [ "$#" -eq 1 -a "$1" = "-r" ] ; then
+            #
+            # Get rid of the previously downloaded and unpacked version.
+            #
+            rm -rf libgcrypt-$installed_libgcrypt_version
+            rm -rf libgcrypt-$installed_libgcrypt_version.tar.gz
+        fi
+
+        installed_libgcrypt_version=""
+    fi
+}
+
+install_gnutls() {
+    if [ "$GNUTLS_VERSION" -a ! -f gnutls-$GNUTLS_VERSION-done ] ; then
+        #
+        # GnuTLS requires libgcrypt (or nettle, in newer versions).
+        #
+        if [ -z $LIBGCRYPT_VERSION ]
+        then
+            echo "GnuTLS requires libgcrypt, but you didn't install libgcrypt" 1>&2
+            exit 1
+        fi
+
+        echo "Downloading, building, and installing GnuTLS:"
+        [ -f gnutls-$GNUTLS_VERSION.tar.bz2 ] || curl -L -O http://ftp.gnu.org/gnu/gnutls/gnutls-$GNUTLS_VERSION.tar.bz2 || exit 1
+        bzcat gnutls-$GNUTLS_VERSION.tar.bz2 | tar xf - || exit 1
+        cd gnutls-$GNUTLS_VERSION
+        #
+        # Use libgcrypt, not nettle.
+        # XXX - is there some reason to prefer nettle?  Or does
+        # Wireshark directly use libgcrypt routines?
+        #
+        CFLAGS="$CFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" CXXFLAGS="$CXXFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" ./configure --with-libgcrypt --without-p11-kit || exit 1
+        make $MAKE_BUILD_OPTS || exit 1
+        #
+        # The pkgconfig file for GnuTLS says "requires zlib", but OS X,
+        # while it supplies zlib, doesn't supply a pkgconfig file for
+        # it.
+        #
+        # Patch the GnuTLS pkgconfig file not to require zlib.
+        # (If the capabilities of GnuTLS that Wireshark uses don't
+        # depend on building GnuTLS with zlib, an alternative would be
+        # to configure it not to use zlib.)
+        #
+        patch -p0 lib/gnutls.pc.in <../../macosx-support-lib-patches/gnutls-pkgconfig.patch || exit 1
+        $DO_MAKE_INSTALL || exit 1
+        cd ..
+        touch gnutls-$GNUTLS_VERSION-done
+    fi
+}
+
+uninstall_gnutls() {
+    if [ ! -z "$installed_gnutls_version" ] ; then
+        echo "Uninstalling GnuTLS:"
+        cd gnutls-$installed_gnutls_version
+        $DO_MAKE_UNINSTALL || exit 1
+        make distclean || exit 1
+        cd ..
+        rm gnutls-$installed_gnutls_version-done
+
+        if [ "$#" -eq 1 -a "$1" = "-r" ] ; then
+            #
+            # Get rid of the previously downloaded and unpacked version.
+            #
+            rm -rf gnutls-$installed_gnutls_version
+            rm -rf gnutls-$installed_gnutls_version.tar.bz2
+        fi
+
+        installed_gnutls_version=""
+    fi
+}
+
+install_lua() {
+    if [ "$LUA_VERSION" -a ! -f lua-$LUA_VERSION-done ] ; then
+        echo "Downloading, building, and installing Lua:"
+        [ -f lua-$LUA_VERSION.tar.gz ] || curl -L -O http://www.lua.org/ftp/lua-$LUA_VERSION.tar.gz || exit 1
+        gzcat lua-$LUA_VERSION.tar.gz | tar xf - || exit 1
+        cd lua-$LUA_VERSION
+        make MYCFLAGS="$CFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" MYLDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" $MAKE_BUILD_OPTS macosx || exit 1
+        $DO_MAKE_INSTALL || exit 1
+        cd ..
+        touch lua-$LUA_VERSION-done
+    fi
+}
+
+uninstall_lua() {
+    if [ ! -z "$installed_lua_version" ] ; then
+        echo "Uninstalling Lua:"
+        #
+        # Lua has no "make uninstall", so just remove stuff manually.
+        # There's no configure script, so there's no need for
+        # "make distclean", either; just do "make clean".
+        #
+        (cd /usr/local/bin; $DO_RM -f lua luac)
+        (cd /usr/local/include; $DO_RM -f lua.h luaconf.h lualib.h lauxlib.h lua.hpp)
+        (cd /usr/local/lib; $DO_RM -f liblua.a)
+        (cd /usr/local/man/man1; $DO_RM -f lua.1 luac.1)
+        cd lua-$installed_lua_version
+        make clean || exit 1
+        cd ..
+        rm lua-$installed_lua_version-done
+
+        if [ "$#" -eq 1 -a "$1" = "-r" ] ; then
+            #
+            # Get rid of the previously downloaded and unpacked version.
+            #
+            rm -rf lua-$installed_lua_version
+            rm -rf lua-$installed_lua_version.tar.gz
+        fi
+
+        installed_lua_version=""
+    fi
+}
+
+install_portaudio() {
+    #
+    # Check for both the old versionless portaudio-done and the new
+    # versioned -done file.
+    #
+    if [ "$PORTAUDIO_VERSION" -a ! -f portaudio-$PORTAUDIO_VERSION-done ] ; then
+        echo "Downloading, building, and installing PortAudio:"
+        [ -f $PORTAUDIO_VERSION.tgz ] || curl -L -O http://www.portaudio.com/archives/$PORTAUDIO_VERSION.tgz || exit 1
+        gzcat $PORTAUDIO_VERSION.tgz | tar xf - || exit 1
+        cd portaudio
+        #
+        # Un-comment an include that's required on Lion.
+        #
+        patch -p0 include/pa_mac_core.h <../../macosx-support-lib-patches/portaudio-pa_mac_core.h.patch
+        #
+        # Fix a bug that showed up with clang (but is a bug with any
+        # compiler).
+        #
+        patch -p0 src/hostapi/coreaudio/pa_mac_core.c <../../macosx-support-lib-patches/portaudio-pa_mac_core.c.patch
+        #
+        # Disable fat builds - the configure script doesn't work right
+        # with Xcode 4 if you leave them enabled, and we don't build
+        # any other libraries fat (GLib, for example, would be very
+        # hard to build fat), so there's no advantage to having PortAudio
+        # built fat.
+        #
+        # Set the minimum OS X version to 10.4, to suppress some
+        # deprecation warnings.  (Good luck trying to make any of
+        # this build on an OS+Xcode with a pre-10.4 SDK; we don't
+        # worry about the user requesting that.)
+        #
+        # Explicitly disable deprecation, so the damn thing will build
+        # on El Capitan with Xcode 7.
+        #
+        CFLAGS="$CFLAGS -Wno-deprecated-declarations -mmacosx-version-min=10.4 $SDKFLAGS" CXXFLAGS="$CXXFLAGS -mmacosx-version-min=10.4 $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" ./configure --disable-mac-universal || exit 1
+        make $MAKE_BUILD_OPTS || exit 1
+        $DO_MAKE_INSTALL || exit 1
+        cd ..
+        touch portaudio-$PORTAUDIO_VERSION-done
+    fi
+}
+
+uninstall_portaudio() {
+    if [ ! -z "$installed_portaudio_version" ] ; then
+        echo "Uninstalling PortAudio:"
+        cd portaudio
+        $DO_MAKE_UNINSTALL || exit 1
+        make distclean || exit 1
+        cd ..
+        rm portaudio-$installed_portaudio_version-done
+
+        if [ "$#" -eq 1 -a "$1" = "-r" ] ; then
+            #
+            # Get rid of the previously downloaded and unpacked version.
+            #
+            rm -rf portaudio
+            rm -rf $installed_portaudio_version.tgz
+        fi
+
+        installed_portaudio_version=""
+    fi
+}
+
+install_geoip() {
+    if [ "$GEOIP_VERSION" -a ! -f geoip-$GEOIP_VERSION-done ] ; then
+        echo "Downloading, building, and installing GeoIP API:"
+        [ -f GeoIP-$GEOIP_VERSION.tar.gz ] || curl -L -O http://geolite.maxmind.com/download/geoip/api/c/GeoIP-$GEOIP_VERSION.tar.gz || exit 1
+        gzcat GeoIP-$GEOIP_VERSION.tar.gz | tar xf - || exit 1
+        cd GeoIP-$GEOIP_VERSION
+        CFLAGS="$CFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" CXXFLAGS="$CXXFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" ./configure || exit 1
+        #
+        # Grr.  Their man pages "helpfully" have an ISO 8859-1
+        # copyright symbol in the copyright notice, but OS X's
+        # default character encoding is UTF-8.  sed on Mountain
+        # Lion barfs at the "illegal character sequence" represented
+        # by an ISO 8859-1 copyright symbol, as it's not a valid
+        # UTF-8 sequence.
+        #
+        # iconv the relevant man pages into UTF-8.
+        #
+        for i in geoipupdate.1.in geoiplookup6.1.in geoiplookup.1.in
+        do
+            iconv -f iso8859-1 -t utf-8 man/"$i" >man/"$i".tmp &&
+                mv man/"$i".tmp man/"$i"
+        done
+        make $MAKE_BUILD_OPTS || exit 1
+        $DO_MAKE_INSTALL || exit 1
+        cd ..
+        touch geoip-$GEOIP_VERSION-done
+    fi
+}
+
+uninstall_geoip() {
+    if [ ! -z "$installed_geoip_version" ] ; then
+        echo "Uninstalling GeoIP API:"
+        cd GeoIP-$installed_geoip_version
+        $DO_MAKE_UNINSTALL || exit 1
+        make distclean || exit 1
+        cd ..
+        rm geoip-$installed_geoip_version-done
+
+        if [ "$#" -eq 1 -a "$1" = "-r" ] ; then
+            #
+            # Get rid of the previously downloaded and unpacked version.
+            #
+            rm -rf GeoIP-$installed_geoip_version
+            rm -rf GeoIP-$installed_geoip_version.tar.gz
+        fi
+
+        installed_geoip_version=""
+    fi
+}
+
+install_c_ares() {
+    if [ "$CARES_VERSION" -a ! -f c-ares-$CARES_VERSION-done ] ; then
+        echo "Downloading, building, and installing C-Ares API:"
+        [ -f c-ares-$CARES_VERSION.tar.gz ] || curl -L -O http://c-ares.haxx.se/download/c-ares-$CARES_VERSION.tar.gz || exit 1
+        gzcat c-ares-$CARES_VERSION.tar.gz | tar xf - || exit 1
+        cd c-ares-$CARES_VERSION
+        CFLAGS="$CFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" CXXFLAGS="$CXXFLAGS $VERSION_MIN_FLAGS $SDKFLAGS"  LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" ./configure || exit 1
+        make $MAKE_BUILD_OPTS || exit 1
+        $DO_MAKE_INSTALL || exit 1
+        cd ..
+        touch c-ares-$CARES_VERSION-done
+    fi
+}
+
+uninstall_c_ares() {
+    if [ ! -z "$installed_cares_version" ] ; then
+        echo "Uninstalling C-Ares API:"
+        cd c-ares-$installed_cares_version
+        $DO_MAKE_UNINSTALL || exit 1
+        make distclean || exit 1
+        cd ..
+        rm c-ares-$installed_cares_version-done
+
+        if [ "$#" -eq 1 -a "$1" = "-r" ] ; then
+            #
+            # Get rid of the previously downloaded and unpacked version.
+            #
+            rm -rf c-ares-$installed_cares_version
+            rm -rf c-ares-$installed_cares_version.tar.gz
+        fi
+
+        installed_cares_version=""
+    fi
+}
+
+install_libssh() {
+    if [ "$LIBSSH_VERSION" -a ! -f libssh-$LIBSSH_VERSION-done ] ; then
+        echo "Downloading, building, and installing libssh:"
+        [ -f libssh-$LIBSSH_VERSION.tar.xz ] || curl -L -O https://red.libssh.org/attachments/download/177/libssh-$LIBSSH_VERSION.tar.xz || exit 1
+        xzcat libssh-$LIBSSH_VERSION.tar.xz | tar xf - || exit 1
+        cd libssh-$LIBSSH_VERSION
+        mkdir build
+        cd build
+        CFLAGS="$CFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" CXXFLAGS="$CXXFLAGS $VERSION_MIN_FLAGS $SDKFLAGS"  LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" cmake -DWITH_GCRYPT=1 ../ || exit 1
+        make $MAKE_BUILD_OPTS || exit 1
+        $DO_MAKE_INSTALL || exit 1
+        cd ../..
+        touch libssh-$LIBSSH_VERSION-done
+    fi
+}
+
+uninstall_libssh() {
+    if [ ! -z "$installed_libssh_version" ] ; then
+        echo "Uninstalling libssh:"
+        cd libssh-$installed_libssh_version
+        $DO_MAKE_UNINSTALL || exit 1
+        make distclean || exit 1
+        cd ..
+        rm libssh-$installed_libssh_version-done
+
+        if [ "$#" -eq 1 -a "$1" = "-r" ] ; then
+            #
+            # Get rid of the previously downloaded and unpacked version.
+            #
+            rm -rf libssh-$installed_libssh_version
+            rm -rf libssh-$installed_libssh_version.tar.xz
+        fi
+
+        installed_libssh_version=""
+    fi
+}
+
+install_all() {
+    #
+    # Check whether the versions we have installed are the versions
+    # requested; if not, uninstall the installed versions.
+    #
+    if [ ! -z "$installed_libssh_version" -a \
+              "$installed_libssh_version" != "$LIBSSH_VERSION" ] ; then
+        echo "Installed libssh version is $installed_libssh_version"
+        if [ -z "$LIBSSH_VERSION" ] ; then
+            echo "libssh is not requested"
+        else
+            echo "Requested libssh version is $LIBSSH_VERSION"
+        fi
+        uninstall_libssh -r
+    fi
+
+    if [ ! -z "$installed_cares_version" -a \
+              "$installed_cares_version" != "$CARES_VERSION" ] ; then
+        echo "Installed C-Ares version is $installed_cares_version"
+        if [ -z "$CARES_VERSION" ] ; then
+            echo "C-Ares is not requested"
+        else
+            echo "Requested C-Ares version is $CARES_VERSION"
+        fi
+        uninstall_c_ares -r
+    fi
+
+    if [ ! -z "$installed_geoip_version" -a \
+              "$installed_geoip_version" != "$GEOIP_VERSION" ] ; then
+        echo "Installed GeoIP API version is $installed_geoip_version"
+        if [ -z "$GEOIP_VERSION" ] ; then
+            echo "GeoIP is not requested"
+        else
+            echo "Requested GeoIP version is $GEOIP_VERSION"
+        fi
+        uninstall_geoip -r
+    fi
+
+    if [ ! -z "$installed_portaudio_version" -a \
+              "$installed_portaudio_version" != "$PORTAUDIO_VERSION" ] ; then
+        echo "Installed PortAudio version is $installed_portaudio_version"
+        if [ -z "$PORTAUDIO_VERSION" ] ; then
+            echo "PortAudio is not requested"
+        else
+            echo "Requested PortAudio version is $PORTAUDIO_VERSION"
+        fi
+        uninstall_portaudio -r
+    fi
+
+    if [ ! -z "$installed_lua_version" -a \
+              "$installed_lua_version" != "$LUA_VERSION" ] ; then
+        echo "Installed Lua version is $installed_lua_version"
+        if [ -z "$LUA_VERSION" ] ; then
+            echo "Lua is not requested"
+        else
+            echo "Requested Lua version is $LUA_VERSION"
+        fi
+        uninstall_lua -r
+    fi
+
+    if [ ! -z "$installed_gnutls_version" -a \
+              "$installed_gnutls_version" != "$GNUTLS_VERSION" ] ; then
+        echo "Installed GnuTLS version is $installed_gnutls_version"
+        if [ -z "$GNUTLS_VERSION" ] ; then
+            echo "GnuTLS is not requested"
+        else
+            echo "Requested GnuTLS version is $GNUTLS_VERSION"
+        fi
+        uninstall_gnutls -r
+    fi
+
+    if [ ! -z "$installed_libgcrypt_version" -a \
+              "$installed_libgcrypt_version" != "$LIBGCRYPT_VERSION" ] ; then
+        echo "Installed libgcrypt version is $installed_libgcrypt_version"
+        if [ -z "$LIBGCRYPT_VERSION" ] ; then
+            echo "libgcrypt is not requested"
+        else
+            echo "Requested libgcrypt version is $LIBGCRYPT_VERSION"
+        fi
+        uninstall_libgcrypt -r
+    fi
+
+    if [ ! -z "$installed_libgpg_error_version" -a \
+              "$installed_libgpg_error_version" != "$LIBGPG_ERROR_VERSION" ] ; then
+        echo "Installed libgpg-error version is $installed_libgpg_error_version"
+        if [ -z "$LIBGPG_ERROR_VERSION" ] ; then
+            echo "libgpg-error is not requested"
+        else
+            echo "Requested libgpg-error version is $LIBGPG_ERROR_VERSION"
+        fi
+        uninstall_libgpg_error -r
+    fi
+
+    if [ ! -z "$installed_libsmi_version" -a \
+              "$installed_libsmi_version" != "$LIBSMI_VERSION" ] ; then
+        echo "Installed libsmi version is $installed_libsmi_version"
+        if [ -z "$LIBSMI_VERSION" ] ; then
+            echo "libsmi is not requested"
+        else
+            echo "Requested libsmi version is $LIBSMI_VERSION"
+        fi
+        uninstall_libsmi -r
+    fi
+
+    if [ ! -z "$installed_gtk_version" -a \
+              "$installed_gtk_version" != "$GTK_VERSION" ] ; then
+        echo "Installed GTK+ version is $installed_gtk_version"
+        if [ -z "$GTK_VERSION" ] ; then
+            echo "GTK+ is not requested"
+        else
+            echo "Requested GTK+ version is $GTK_VERSION"
+        fi
+        uninstall_gtk -r
+    fi
+
+    if [ ! -z "$installed_gdk_pixbuf_version" -a \
+              "$installed_gdk_pixbuf_version" != "$GDK_PIXBUF_VERSION" ] ; then
+        echo "Installed gdk-pixbuf version is $installed_gdk_pixbuf_version"
+        if [ -z "$GDK_PIXBUF_VERSION" ] ; then
+            echo "gdk-pixbuf is not requested"
+        else
+            echo "Requested gdk-pixbuf version is $GDK_PIXBUF_VERSION"
+        fi
+        uninstall_gdk_pixbuf -r
+    fi
+
+    if [ ! -z "$installed_pango_version" -a \
+              "$installed_pango_version" != "$PANGO_VERSION" ] ; then
+        echo "Installed Pango version is $installed_pango_version"
+        if [ -z "$PANGO_VERSION" ] ; then
+            echo "Pango is not requested"
+        else
+            echo "Requested Pango version is $PANGO_VERSION"
+        fi
+        uninstall_pango -r
+    fi
+
+    if [ ! -z "$installed_atk_version" -a \
+              "$installed_atk_version" != "$ATK_VERSION" ] ; then
+        echo "Installed ATK version is $installed_atk_version"
+        if [ -z "$ATK_VERSION" ] ; then
+            echo "ATK is not requested"
+        else
+            echo "Requested ATK version is $ATK_VERSION"
+        fi
+        uninstall_atk -r
+    fi
+
+    if [ ! -z "$installed_cairo_version" -a \
+              "$installed_cairo_version" != "$CAIRO_VERSION" ] ; then
+        echo "Installed Cairo version is $installed_cairo_version"
+        if [ -z "$CAIRO_VERSION" ] ; then
+            echo "Cairo is not requested"
+        else
+            echo "Requested Cairo version is $CAIRO_VERSION"
+        fi
+        uninstall_cairo -r
+    fi
+
+    if [ ! -z "$installed_pixman_version" -a \
+              "$installed_pixman_version" != "$PIXMAN_VERSION" ] ; then
+        echo "Installed pixman version is $installed_pixman_version"
+        if [ -z "$PIXMAN_VERSION" ] ; then
+            echo "pixman is not requested"
+        else
+            echo "Requested pixman version is $PIXMAN_VERSION"
+        fi
+        uninstall_pixman -r
+    fi
+
+    if [ ! -z "$installed_libpng_version" -a \
+              "$installed_libpng_version" != "$PNG_VERSION" ] ; then
+        echo "Installed libpng version is $installed_libpng_version"
+        if [ -z "$PNG_VERSION" ] ; then
+            echo "libpng is not requested"
+        else
+            echo "Requested libpng version is $PNG_VERSION"
+        fi
+        uninstall_libpng -r
+    fi
+
+    if [ ! -z "$installed_qt_version" -a \
+              "$installed_qt_version" != "$QT_VERSION" ] ; then
+        echo "Installed Qt version is $installed_qt_version"
+        if [ -z "$QT_VERSION" ] ; then
+            echo "Qt is not requested"
+        else
+            echo "Requested Qt version is $QT_VERSION"
+        fi
+        uninstall_qt -r
+    fi
+
+    if [ ! -z "$installed_glib_version" -a \
+              "$installed_glib_version" != "$GLIB_VERSION" ] ; then
+        echo "Installed GLib version is $installed_glib_version"
+        if [ -z "$GLIB_VERSION" ] ; then
+            echo "GLib is not requested"
+        else
+            echo "Requested GLib version is $GLIB_VERSION"
+        fi
+        uninstall_glib -r
+    fi
+
+    if [ ! -z "$installed_pkg_config_version" -a \
+              "$installed_pkg_config_version" != "$PKG_CONFIG_VERSION" ] ; then
+        echo "Installed pkg-config version is $installed_pkg_config_version"
+        if [ -z "$PKG_CONFIG_VERSION" ] ; then
+            echo "pkg-config is not requested"
+        else
+            echo "Requested pkg-config version is $PKG_CONFIG_VERSION"
+        fi
+        uninstall_pkg_config -r
+    fi
+
+    if [ ! -z "$installed_gettext_version" -a \
+              "$installed_gettext_version" != "$GETTEXT_VERSION" ] ; then
+        echo "Installed GNU gettext version is $installed_gettext_version"
+        if [ -z "$GETTEXT_VERSION" ] ; then
+            echo "GNU gettext is not requested"
+        else
+            echo "Requested GNU gettext version is $GETTEXT_VERSION"
+        fi
+        uninstall_gettext -r
+    fi
+
+    if [ ! -z "$installed_cmake_version" -a \
+              "$installed_cmake_version" != "$CMAKE_VERSION" ] ; then
+        echo "Installed CMake version is $installed_cmake_version"
+        if [ -z "$CMAKE_VERSION" ] ; then
+            echo "CMake is not requested"
+        else
+            echo "Requested CMake version is $CMAKE_VERSION"
+        fi
+        #
+        # XXX - really remove this?
+        # Or should we remember it as installed only if this script
+        # installed it?
+        #
+        uninstall_cmake -r
+    fi
+
+    if [ ! -z "$installed_libtool_version" -a \
+              "$installed_libtool_version" != "$LIBTOOL_VERSION" ] ; then
+        echo "Installed GNU libtool version is $installed_libtool_version"
+        if [ -z "$LIBTOOL_VERSION" ] ; then
+            echo "GNU libtool is not requested"
+        else
+            echo "Requested GNU libtool version is $LIBTOOL_VERSION"
+        fi
+        uninstall_libtool -r
+    fi
+
+    if [ ! -z "$installed_automake_version" -a \
+              "$installed_automake_version" != "$AUTOMAKE_VERSION" ] ; then
+        echo "Installed GNU automake version is $installed_automake_version"
+        if [ -z "$AUTOMAKE_VERSION" ] ; then
+            echo "GNU automake is not requested"
+        else
+            echo "Requested GNU automake version is $AUTOMAKE_VERSION"
+        fi
+        uninstall_automake -r
+    fi
+
+    if [ ! -z "$installed_autoconf_version" -a \
+              "$installed_autoconf_version" != "$AUTOCONF_VERSION" ] ; then
+        echo "Installed GNU autoconf version is $installed_autoconf_version"
+        if [ -z "$AUTOCONF_VERSION" ] ; then
+            echo "GNU autoconf is not requested"
+        else
+            echo "Requested GNU autoconf version is $AUTOCONF_VERSION"
+        fi
+        uninstall_autoconf -r
+    fi
+
+    if [ ! -z "$installed_xz_version" -a \
+              "$installed_xz_version" != "$XZ_VERSION" ] ; then
+        echo "Installed xz version is $installed_xz_version"
+        if [ -z "$XZ_VERSION" ] ; then
+            echo "xz is not requested"
+        else
+            echo "Requested xz version is $XZ_VERSION"
+        fi
+        uninstall_xz -r
+    fi
+
+    #
+    # Start with xz: It is the sole download format of glib later than 2.31.2
+    #
+    install_xz
+
+    install_autoconf
+
+    install_automake
+
+    install_libtool
+
+    install_cmake
+
+    #
+    # Start with GNU gettext; GLib requires it, and OS X doesn't have it
+    # or a BSD-licensed replacement.
+    #
+    # At least on Lion with Xcode 4, _FORTIFY_SOURCE gets defined as 2
+    # by default, which causes, for example, stpncpy to be defined as
+    # a hairy macro that collides with the GNU gettext configure script's
+    # attempts to workaround AIX's lack of a declaration for stpncpy,
+    # with the result being a huge train wreck.  Define _FORTIFY_SOURCE
+    # as 0 in an attempt to keep the trains on separate tracks.
+    #
+    install_gettext
+
+    #
+    # GLib depends on pkg-config.
+    # By default, pkg-config depends on GLib; we break the dependency cycle
+    # by configuring pkg-config to use its own internal version of GLib.
+    #
+    install_pkg_config
+
+    install_glib
+
+    #
+    # Now we have reached a point where we can build everything but
+    # the GUI (Wireshark).
+    #
+    install_qt
+
+    if [ "$GTK_VERSION" ]; then
+        #
+        # GTK+ 3 requires a newer Cairo build than the one that comes with
+        # 10.6, so we build Cairo if we are using GTK+ 3.
+        #
+        # In 10.6 and 10.7, it's an X11 library; if we build with "native" GTK+
+        # rather than X11 GTK+, we might have to build and install Cairo.
+        # In 10.8 and later, there is no X11, but it's included in Xquartz;
+        # again, if we build with "native" GTK+, we'd have to build and install
+        # it.
+        #
+        if [[ "$GTK_MAJOR_VERSION" -eq 3 || "$cairo_not_in_the_os" = yes ]]; then
+            #
+            # Requirements for Cairo first
+            #
+            # The libpng that comes with the X11 for Leopard has a bogus
+            # pkg-config file that lies about where the header files are,
+            # which causes other packages not to be able to find its
+            # headers.
+            #
+            # The libpng in later versions is not what the version of
+            # libpixman we build below wants - it wants libpng15.
+            #
+            install_libpng
+
+            #
+            # The libpixman versions that come with the X11s for Leopard,
+            # Snow Leopard, and Lion is too old to support Cairo's image
+            # surface backend feature (which requires pixman-1 >= 0.22.0).
+            #
+            # XXX - what about the one that comes with the latest version
+            # of Xquartz?
+            #
+            install_pixman
+
+            #
+            # And now Cairo itself.
+            # XXX - with the libxcb that comes with 10.6,
+            # xcb_discard_reply() is missing, and the build fails.
+            #
+            install_cairo
+        fi
+
+        install_atk
+
+        install_pango
+
+        install_gdk_pixbuf
+
+        install_gtk
+    fi
+
+    #
+    # Now we have reached a point where we can build everything including
+    # the GUI (Wireshark), but not with any optional features such as
+    # SNMP OID resolution, some forms of decryption, Lua scripting, playback
+    # of audio, or GeoIP mapping of IP addresses.
+    #
+    # We now conditionally download optional libraries to support them;
+    # the default is to download them all.
+    #
+
+    install_libsmi
+
+    install_libgpg_error
+
+    install_libgcrypt
+
+    install_gnutls
+
+    install_lua
+
+    install_portaudio
+
+    install_geoip
+
+    install_c_ares
+
+    install_libssh
+}
+
+uninstall_all() {
+    if [ -d macosx-support-libs ]
+    then
+        cd macosx-support-libs
+
+        #
+        # Uninstall items in the reverse order from the order in which they're
+        # installed.  Only uninstall if the download/build/install process
+        # completed; uninstall the version that appears in the name of
+        # the -done file.
+        #
+        # We also do a "make distclean", so that we don't have leftovers from
+        # old configurations.
+        #
+        uninstall_libssh
+
+        uninstall_c_ares
+
+        uninstall_geoip
+
+        uninstall_portaudio
+
+        uninstall_lua
+
+        uninstall_gnutls
+
+        uninstall_libgcrypt
+
+        uninstall_libgpg_error
+
+        uninstall_libsmi
+
+        uninstall_gtk
+
+        uninstall_gdk_pixbuf
+
+        uninstall_pango
+
+        uninstall_atk
+
+        uninstall_cairo
+
+        uninstall_pixman
+
+        uninstall_libpng
+
+        uninstall_qt
+
+        uninstall_glib
+
+        uninstall_pkg_config
+
+        uninstall_gettext
+
         #
-        CFLAGS="$CFLAGS -arch i386"
-        CXXFLAGS="$CXXFLAGS -arch i386"
-        export LDFLAGS="$LDFLAGS -arch i386"
-    fi
-fi
+        # XXX - really remove this?
+        # Or should we remember it as installed only if this script
+        # installed it?
+        #
+        uninstall_cmake
 
-export CFLAGS
-export CXXFLAGS
+        uninstall_libtool
 
-#
-# You need Xcode or the command-line tools installed to get the compilers.
-#
-if [ ! -x /usr/bin/xcodebuild ]; then
-    echo "Please install Xcode first (should be available on DVD or from http://developer.apple.com/xcode/index.php)."
-    exit 1
-fi
+        uninstall_automake
 
-if [ "$QT_VERSION" ]; then
-    #
-    # We need Xcode, not just the command-line tools, installed to build
-    # Qt.
-    #
-    if ! /usr/bin/xcrun -find xcrun >/dev/null 2>&1; then
-        echo "Please install Xcode first (should be available on DVD or from http://developer.apple.com/xcode/index.php)."
-        echo "The command-line build tools are not sufficient to build Qt."
-        exit 1
-    fi
-fi
-if [ "$GTK_VERSION" ]; then
-    #
-    # If we're building with GTK+, you also need the X11 SDK; with at least
-    # some versions of OS X and Xcode, that is, I think, an optional install.
-    # (Or it might be installed with X11, but I think *that* is an optional
-    # install on at least some versions of OS X.)
-    #
-    if [ ! -d /usr/X11/include ]; then
-        echo "Please install X11 and the X11 SDK first."
-        exit 1
-    fi
-fi
+        uninstall_autoconf
 
-export PKG_CONFIG_PATH=/usr/local/lib/pkgconfig:/usr/X11/lib/pkgconfig
+        uninstall_xz
+    fi
+}
 
 #
-# Do all the downloads and untarring in a subdirectory, so all that
-# stuff can be removed once we've installed the support libraries.
+# Do we have permission to write in /usr/local?
 #
-if [ ! -d macosx-support-libs ]
+# If so, assume we have permission to write in its subdirectories.
+# (If that's not the case, this test needs to check the subdirectories
+# as well.)
+#
+# If not, do "make install", "make uninstall", the removes for Lua,
+# and the renames of [g]libtool* with sudo.
+#
+if [ -w /usr/local ]
 then
-    mkdir macosx-support-libs || exit 1
+    DO_MAKE_INSTALL="make install"
+    DO_MAKE_UNINSTALL="make uninstall"
+    DO_RM="rm"
+    DO_MV="mv"
+else
+    DO_MAKE_INSTALL="sudo make install"
+    DO_MAKE_UNINSTALL="sudo make uninstall"
+    DO_RM="sudo rm"
+    DO_MV="sudo mv"
 fi
-cd macosx-support-libs
 
-# Start with xz: It is the sole download format of glib later than 2.31.2
 #
-if [ "$XZ_VERSION" -a ! -f xz-$XZ_VERSION-done ] ; then
-    echo "Downloading, building, and installing xz:"
-    [ -f xz-$XZ_VERSION.tar.bz2 ] || curl -O http://tukaani.org/xz/xz-$XZ_VERSION.tar.bz2 || exit 1
-    bzcat xz-$XZ_VERSION.tar.bz2 | tar xf - || exit 1
-    cd xz-$XZ_VERSION
-    CFLAGS="$CFLAGS -D_FORTIFY_SOURCE=0" ./configure || exit 1
-    make $MAKE_BUILD_OPTS || exit 1
-    $DO_MAKE_INSTALL || exit 1
-    cd ..
-    touch xz-$XZ_VERSION-done
-fi
+# If we have SDKs available, the default target OS is the major version
+# of the one we're running; get that and strip off the third component
+# if present.
+#
+for i in /Developer/SDKs \
+    /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs \
+    /Library/Developer/CommandLineTools/SDKs
+do
+    if [ -d "$i" ]
+    then
+        min_osx_target=`sw_vers -productVersion | sed 's/\([0-9]*\)\.\([0-9]*\)\.[0-9]*/\1.\2/'`
 
-if [ "$AUTOCONF_VERSION" -a ! -f autoconf-$AUTOCONF_VERSION-done ] ; then
-    echo "Downloading, building and installing GNU autoconf..."
-    [ -f autoconf-$AUTOCONF_VERSION.tar.xz ] || curl -O ftp://ftp.gnu.org/gnu/autoconf/autoconf-$AUTOCONF_VERSION.tar.xz || exit 1
-    xzcat autoconf-$AUTOCONF_VERSION.tar.xz | tar xf - || exit 1
-    cd autoconf-$AUTOCONF_VERSION
-    ./configure || exit 1
-    make $MAKE_BUILD_OPTS || exit 1
-    $DO_MAKE_INSTALL || exit 1
-    cd ..
-    touch autoconf-$AUTOCONF_VERSION-done
-fi
+        #
+        # That's also the OS whose SDK we'd be using.
+        #
+        sdk_target=$min_osx_target
+        break
+    fi
+done
 
-if [ "$AUTOMAKE_VERSION" -a ! -f automake-$AUTOMAKE_VERSION-done ] ; then
-    echo "Downloading, building and installing GNU automake..."
-    [ -f automake-$AUTOMAKE_VERSION.tar.xz ] || curl -O ftp://ftp.gnu.org/gnu/automake/automake-$AUTOMAKE_VERSION.tar.xz || exit 1
-    xzcat automake-$AUTOMAKE_VERSION.tar.xz | tar xf - || exit 1
-    cd automake-$AUTOMAKE_VERSION
-    ./configure || exit 1
-    make $MAKE_BUILD_OPTS || exit 1
-    $DO_MAKE_INSTALL || exit 1
-    cd ..
-    touch automake-$AUTOMAKE_VERSION-done
-fi
+#
+# Parse command-line flags:
+#
+# -h - print help.
+# -t <target> - build libraries so that they'll work on the specified
+# version of OS X and later versions.
+# -u - do an uninstall.
+#
+while getopts ht:u name
+do
+    case $name in
+    u)
+        do_uninstall=yes
+        ;;
+    t)
+        min_osx_target="$OPTARG"
+        ;;
+    h|?)
+        echo "Usage: macosx-setup.sh [ -t <target> ] [ -u ]" 1>&1
+        exit 0
+        ;;
+    esac
+done
+
+#
+# Get the version numbers of installed packages, if any.
+#
+if [ -d macosx-support-libs ]
+then
+    cd macosx-support-libs
+
+    installed_xz_version=`ls xz-*-done 2>/dev/null | sed 's/xz-\(.*\)-done/\1/'`
+    installed_autoconf_version=`ls autoconf-*-done 2>/dev/null | sed 's/autoconf-\(.*\)-done/\1/'`
+    installed_automake_version=`ls automake-*-done 2>/dev/null | sed 's/automake-\(.*\)-done/\1/'`
+    installed_libtool_version=`ls libtool-*-done 2>/dev/null | sed 's/libtool-\(.*\)-done/\1/'`
+    installed_cmake_version=`ls cmake-*-done 2>/dev/null | sed 's/cmake-\(.*\)-done/\1/'`
+    installed_gettext_version=`ls gettext-*-done 2>/dev/null | sed 's/gettext-\(.*\)-done/\1/'`
+    installed_pkg_config_version=`ls pkg-config-*-done 2>/dev/null | sed 's/pkg-config-\(.*\)-done/\1/'`
+    installed_glib_version=`ls glib-*-done 2>/dev/null | sed 's/glib-\(.*\)-done/\1/'`
+    installed_qt_version=`ls qt-*-done 2>/dev/null | sed 's/qt-\(.*\)-done/\1/'`
+    installed_libpng_version=`ls libpng-*-done 2>/dev/null | sed 's/libpng-\(.*\)-done/\1/'`
+    installed_pixman_version=`ls pixman-*-done 2>/dev/null | sed 's/pixman-\(.*\)-done/\1/'`
+    installed_cairo_version=`ls cairo-*-done 2>/dev/null | sed 's/cairo-\(.*\)-done/\1/'`
+    installed_atk_version=`ls atk-*-done 2>/dev/null | sed 's/atk-\(.*\)-done/\1/'`
+    installed_pango_version=`ls pango-*-done 2>/dev/null | sed 's/pango-\(.*\)-done/\1/'`
+    installed_gdk_pixbuf_version=`ls gdk-pixbuf-*-done 2>/dev/null | sed 's/gdk-pixbuf-\(.*\)-done/\1/'`
+    installed_gtk_version=`ls gtk+-*-done 2>/dev/null | sed 's/gtk+-\(.*\)-done/\1/'`
+    installed_libsmi_version=`ls libsmi-*-done 2>/dev/null | sed 's/libsmi-\(.*\)-done/\1/'`
+    installed_libgpg_error_version=`ls libgpg-error-*-done 2>/dev/null | sed 's/libgpg-error-\(.*\)-done/\1/'`
+    installed_libgcrypt_version=`ls libgcrypt-*-done 2>/dev/null | sed 's/libgcrypt-\(.*\)-done/\1/'`
+    installed_gnutls_version=`ls gnutls-*-done 2>/dev/null | sed 's/gnutls-\(.*\)-done/\1/'`
+    installed_lua_version=`ls lua-*-done 2>/dev/null | sed 's/lua-\(.*\)-done/\1/'`
+    installed_portaudio_version=`ls portaudio-*-done 2>/dev/null | sed 's/portaudio-\(.*\)-done/\1/'`
+    installed_geoip_version=`ls geoip-*-done 2>/dev/null | sed 's/geoip-\(.*\)-done/\1/'`
+    installed_cares_version=`ls c-ares-*-done 2>/dev/null | sed 's/c-ares-\(.*\)-done/\1/'`
+    installed_libssh_version=`ls libssh-*-done 2>/dev/null | sed 's/libssh-\(.*\)-done/\1/'`
+
+    #
+    # If we don't have a versioned -done file for portaudio, but do have
+    # an unversioned -done file for it, assume the installed version is the
+    # requested version, and rename the -done file to include that version.
+    #
+    if [ -z "$installed_portaudio_version" -a -f portaudio-done ] ; then
+        mv portaudio-done portaudio-$PORTAUDIO_VERSION-done
+        installed_portaudio_version=`ls portaudio-*-done 2>/dev/null | sed 's/portaudio-\(.*\)-done/\1/'`
+    fi
 
-if [ "$LIBTOOL_VERSION" -a ! -f libtool-$LIBTOOL_VERSION-done ] ; then
-    echo "Downloading, building and installing GNU libtool..."
-    [ -f libtool-$LIBTOOL_VERSION.tar.xz ] || curl -O ftp://ftp.gnu.org/gnu/libtool/libtool-$LIBTOOL_VERSION.tar.xz || exit 1
-    xzcat libtool-$LIBTOOL_VERSION.tar.xz | tar xf - || exit 1
-    cd libtool-$LIBTOOL_VERSION
-    ./configure || exit 1
-    make $MAKE_BUILD_OPTS || exit 1
-    $DO_MAKE_INSTALL || exit 1
-    mv /usr/local/bin/libtool /usr/local/bin/glibtool
-    mv /usr/local/bin/libtoolize /usr/local/bin/glibtoolize
     cd ..
-    touch libtool-$LIBTOOL_VERSION-done
 fi
 
-if [ -n "$CMAKE" -a ! -f cmake-$CMAKE_VERSION-done ]; then
-  echo "Downloading, building, and installing CMAKE:"
-  cmake_dir=`expr $CMAKE_VERSION : '\([0-9][0-9]*\.[0-9][0-9]*\).*'`
-  [ -f cmake-$CMAKE_VERSION.tar.gz ] || curl -O http://www.cmake.org/files/v$cmake_dir/cmake-$CMAKE_VERSION.tar.gz || exit 1
-  gzcat cmake-$CMAKE_VERSION.tar.gz | tar xf - || exit 1
-  cd cmake-$CMAKE_VERSION
-  ./bootstrap || exit 1
-  make $MAKE_BUILD_OPTS || exit 1
-  $DO_MAKE_INSTALL || exit 1
-  cd ..
-  touch cmake-$CMAKE_VERSION-done
+if [ "$do_uninstall" = "yes" ]
+then
+    uninstall_all
+    exit 0
 fi
 
 #
-# Start with GNU gettext; GLib requires it, and OS X doesn't have it
-# or a BSD-licensed replacement.
+# Configure scripts tend to set CFLAGS and CXXFLAGS to "-g -O2" if
+# invoked without CFLAGS or CXXFLAGS being set in the environment.
 #
-# At least on Lion with Xcode 4, _FORTIFY_SOURCE gets defined as 2
-# by default, which causes, for example, stpncpy to be defined as
-# a hairy macro that collides with the GNU gettext configure script's
-# attempts to workaround AIX's lack of a declaration for stpncpy,
-# with the result being a huge train wreck.  Define _FORTIFY_SOURCE
-# as 0 in an attempt to keep the trains on separate tracks.
+# However, we *are* setting them in the environment, for our own
+# nefarious purposes, so start them out as "-g -O2".
 #
-if [ ! -f gettext-$GETTEXT_VERSION-done ] ; then
-    echo "Downloading, building, and installing GNU gettext:"
-    [ -f gettext-$GETTEXT_VERSION.tar.gz ] || curl -O http://ftp.gnu.org/pub/gnu/gettext/gettext-$GETTEXT_VERSION.tar.gz || exit 1
-    gzcat gettext-$GETTEXT_VERSION.tar.gz | tar xf - || exit 1
-    cd gettext-$GETTEXT_VERSION
-    CFLAGS="$CFLAGS -D_FORTIFY_SOURCE=0 $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" ./configure || exit 1
-    make $MAKE_BUILD_OPTS || exit 1
-    $DO_MAKE_INSTALL || exit 1
-    cd ..
-    touch gettext-$GETTEXT_VERSION-done
-fi
+CFLAGS="-g -O2"
+CXXFLAGS="-g -O2"
 
 #
-# GLib depends on pkg-config.
-# By default, pkg-config depends on GLib; we break the dependency cycle
-# by configuring pkg-config to use its own internal version of GLib.
+# To make this work on Leopard (rather than working *on* Snow Leopard
+# when building *for* Leopard) will take more work.
 #
-if [ ! -f pkg-config-$PKG_CONFIG_VERSION-done ] ; then
-    echo "Downloading, building, and installing pkg-config:"
-    [ -f pkg-config-$PKG_CONFIG_VERSION.tar.gz ] || curl -O http://pkgconfig.freedesktop.org/releases/pkg-config-$PKG_CONFIG_VERSION.tar.gz || exit 1
-    gzcat pkg-config-$PKG_CONFIG_VERSION.tar.gz | tar xf - || exit 1
-    cd pkg-config-$PKG_CONFIG_VERSION
-    ./configure --with-internal-glib || exit 1
-    make $MAKE_BUILD_OPTS || exit 1
-    $DO_MAKE_INSTALL || exit 1
-    cd ..
-    touch pkg-config-$PKG_CONFIG_VERSION-done
+# For one thing, Leopard's /usr/X11/lib/libXdamage.la claims, at least
+# with all software updates applied, that the Xdamage shared library
+# is libXdamage.1.0.0.dylib, but it is, in fact, libXdamage.1.1.0.dylib.
+# This causes problems when building GTK+, so the script would have to
+# fix that file.
+#
+if [[ $DARWIN_MAJOR_VERSION -le 9 ]]; then
+    echo "This script does not support any versions of OS X before Snow Leopard" 1>&2
+    exit 1
 fi
 
-if [ ! -f glib-$GLIB_VERSION-done ] ; then
-    echo "Downloading, building, and installing GLib:"
-    glib_dir=`expr $GLIB_VERSION : '\([0-9][0-9]*\.[0-9][0-9]*\).*'`
-    GLIB_MAJOR_VERSION="`expr $GLIB_VERSION : '\([0-9][0-9]*\).*'`"
-    GLIB_MINOR_VERSION="`expr $GLIB_VERSION : '[0-9][0-9]*\.\([0-9][0-9]*\).*'`"
-    GLIB_DOTDOT_VERSION="`expr $GLIB_VERSION : '[0-9][0-9]*\.[0-9][0-9]*\.\([0-9][0-9]*\).*'`"
-    if [[ $GLIB_MAJOR_VERSION -gt 2 ||
-          $GLIB_MINOR_VERSION -gt 28 ||
-          ($GLIB_MINOR_VERSION -eq 28 && $GLIB_DOTDOT_VERSION -ge 8) ]]
-    then
-        #
-        # Starting with GLib 2.28.8, xz-compressed tarballs are available.
-        #
-        [ -f glib-$GLIB_VERSION.tar.xz ] || curl -L -O http://ftp.gnome.org/pub/gnome/sources/glib/$glib_dir/glib-$GLIB_VERSION.tar.xz || exit 1
-        xzcat glib-$GLIB_VERSION.tar.xz | tar xf - || exit 1
-    else
-        [ -f glib-$GLIB_VERSION.tar.bz2 ] || curl -L -O http://ftp.gnome.org/pub/gnome/sources/glib/$glib_dir/glib-$GLIB_VERSION.tar.bz2 || exit 1
-        bzcat glib-$GLIB_VERSION.tar.bz2 | tar xf - || exit 1
-    fi
-    cd glib-$GLIB_VERSION
-    #
-    # OS X ships with libffi, but doesn't provide its pkg-config file;
-    # explicitly specify LIBFFI_CFLAGS and LIBFFI_LIBS, so the configure
-    # script doesn't try to use pkg-config to get the appropriate
-    # C flags and loader flags.
-    #
-    # And, what's worse, at least with the version of Xcode that comes
-    # with Leopard, /usr/include/ffi/fficonfig.h doesn't define MACOSX,
-    # which causes the build of GLib to fail.  If we don't find
-    # "#define.*MACOSX" in /usr/include/ffi/fficonfig.h, explictly
-    # define it.
+# if no make options are present, set default options
+if [ -z "$MAKE_BUILD_OPTS" ] ; then
+    # by default use 1.5x number of cores for parallel build
+    MAKE_BUILD_OPTS="-j $(( $(sysctl -n hw.logicalcpu) * 3 / 2))"
+fi
+
+#
+# If we have a target release, look for the oldest SDK that's for an
+# OS equal to or later than that one, and build libraries against it
+# rather than against the headers and, more importantly, libraries
+# that come with the OS, so that we don't end up with support libraries
+# that only work on the OS version on which we built them, not earlier
+# versions of the same release, or earlier releases if the minimum is
+# earlier.
+#
+if [ ! -z "$min_osx_target" ]
+then
     #
-    # While we're at it, suppress -Wformat-nonliteral to avoid a case
-    # where clang's stricter rules on when not to complain about
-    # non-literal format arguments cause it to complain about code
-    # that's safe but it wasn't told that.  See my comment #25 in
-    # GNOME bug 691608:
+    # Get the real version - strip off the "10.".
+    # We'll worry about that if, as, and when there's ever
+    # an OS XI.
     #
-    #  https://bugzilla.gnome.org/show_bug.cgi?id=691608#c25
+    deploy_real_version=`echo "$min_osx_target" | sed -n 's/10\.\(.*\)/\1/p'`
+
     #
-    # First, determine where the system include files are.  (It's not
-    # necessarily /usr/include.)  There's a bit of a greasy hack here;
-    # pre-5.x versions of the developer tools don't support the
-    # --show-sdk-path option, and will produce no output, so includedir
-    # will be set to /usr/include (in those older versions of the
-    # developer tools, there is a /usr/include directory).
+    # Search each directory that might contain SDKs.
     #
-    includedir=`xcrun --show-sdk-path 2>/dev/null`/usr/include
-    if grep -qs '#define.*MACOSX' $includedir/ffi/fficonfig.h
+    sdkpath=""
+    for sdksdir in /Developer/SDKs \
+        /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs \
+        /Library/Developer/CommandLineTools/SDKs
+    do
+        #
+        # Get a list of all the SDKs.
+        #
+        if ! test -d "$sdksdir"
+        then
+            #
+            # There is no directory with that name.
+            # Move on to the next one in the list, if any.
+            #
+            continue
+        fi
+
+        #
+        # Get a list of all the SDKs in that directory, if any.
+        #
+        sdklist=`(cd "$sdksdir"; ls -d MacOSX10.[0-9]*.sdk 2>/dev/null)`
+
+        for sdk in $sdklist
+        do
+            #
+            # Get the real version for this SDK.
+            #
+            sdk_real_version=`echo "$sdk" | sed -n 's/MacOSX10\.\(.*\)\.sdk/\1/p'`
+
+            #
+            # Is it for the deployment target or some later release?
+            #
+            if test "$sdk_real_version" -ge "$deploy_real_version"
+            then
+                #
+                # Yes, use it.
+                #
+                sdkpath="$sdksdir/$sdk"
+                qt_sdk_arg="-sdk $sdk"
+                break 2
+            fi
+        done
+    done
+
+    if [ -z "$sdkpath" ]
     then
-        # It's defined, nothing to do
-        LIBFFI_CFLAGS="-I $includedir/ffi" LIBFFI_LIBS="-lffi" CFLAGS="$CFLAGS -Wno-format-nonliteral $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" ./configure || exit 1
-    else
-        LIBFFI_CFLAGS="-I $includedir/ffi" LIBFFI_LIBS="-lffi" CFLAGS="$CFLAGS -DMACOSX -Wno-format-nonliteral $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" ./configure || exit 1
+        echo "macosx-setup.sh: Couldn't find an SDK for OS X $min_osx_target or later" 1>&2
+        exit 1
     fi
 
+    SDKPATH="$sdkpath"
+    sdk_target=10.$sdk_real_version
+    echo "Using the 10.$sdk_real_version SDK"
+
     #
-    # Apply the fix to GNOME bug 529806:
-    #
-    #    https://bugzilla.gnome.org/show_bug.cgi?id=529806
-    #
-    # if we have a version of GLib prior to 2.30.
+    # Make sure there are links to /usr/local/include and /usr/local/lib
+    # in the SDK's usr/local.
     #
-    if [[ $GLIB_MAJOR_VERSION -eq 2 && $GLIB_MINOR_VERSION -le 30 ]]
+    if [ ! -e $SDKPATH/usr/local/include ]
     then
-        patch -p0 <../../macosx-support-lib-patches/glib-gconvert.c.patch || exit 1
+        if [ ! -d $SDKPATH/usr/local ]
+        then
+            sudo mkdir $SDKPATH/usr/local
+        fi
+        sudo ln -s /usr/local/include $SDKPATH/usr/local/include
+    fi
+    if [ ! -e $SDKPATH/usr/local/lib ]
+    then
+        if [ ! -d $SDKPATH/usr/local ]
+        then
+            sudo mkdir $SDKPATH/usr/local
+        fi
+        sudo ln -s /usr/local/lib $SDKPATH/usr/local/lib
     fi
-    make $MAKE_BUILD_OPTS || exit 1
-    $DO_MAKE_INSTALL || exit 1
-    cd ..
-    touch glib-$GLIB_VERSION-done
-fi
 
-#
-# Now we have reached a point where we can build everything but
-# the GUI (Wireshark).
-#
-if [ "$QT_VERSION" -a ! -f qt-$QT_VERSION-done ]; then
-    echo "Downloading, building, and installing Qt:"
-    QT_MAJOR_VERSION="`expr $QT_VERSION : '\([0-9][0-9]*\).*'`"
-    QT_MINOR_VERSION="`expr $QT_VERSION : '[0-9][0-9]*\.\([0-9][0-9]*\).*'`"
-    QT_DOTDOT_VERSION="`expr $QT_VERSION : '[0-9][0-9]*\.[0-9][0-9]*\.\([0-9][0-9]*\).*'`"
-    QT_MAJOR_MINOR_VERSION=$QT_MAJOR_VERSION.$QT_MINOR_VERSION
-    #
-    # What you get for this URL might just be a 302 Found reply, so use
-    # -L so we get redirected.
-    #
-    curl -L -O http://download.qt-project.org/official_releases/qt/$QT_MAJOR_MINOR_VERSION/$QT_VERSION/single/qt-everywhere-opensource-src-$QT_VERSION.tar.gz
-    #
-    # Qt 5.1.x sets QMAKE_MACOSX_DEPLOYMENT_TARGET = 10.6
-    # in qtbase/mkspecs/$TARGET_PLATFORM/qmake.conf
-    # We may need to adjust this manually in the future.
-    #
-    # The -no-c++11 flag is needed to work around
-    # https://bugreports.qt-project.org/browse/QTBUG-30487
-    #
-    tar xf qt-everywhere-opensource-src-$QT_VERSION.tar.gz
-    cd qt-everywhere-opensource-src-$QT_VERSION
-    #
-    # We don't build Qt in its Full Shining Glory, as we don't need all
-    # of its components, and it takes *forever* to build in that form.
-    #
-    # Qt 5.2.0 beta1 fails to build on OS X without -no-xcb due to bug
-    # QTBUG-34382.
     #
-    # Qt 5.x fails to build on OS X with -no-opengl due to bug
-    # QTBUG-31151.
+    # Set the minimum OS version for which to build to the specified
+    # minimum target OS version, so we don't, for example, end up using
+    # linker features supported by the OS verson on which we're building
+    # but not by the target version.
     #
-    ./configure -v -sdk macosx$min_osx_target -platform $TARGET_PLATFORM \
-        -opensource -confirm-license -no-c++11 -no-dbus \
-        -no-sql-sqlite -no-xcb -nomake examples \
-        -skip qtdoc -skip qtquickcontrols -skip qtwebkit \
-        -skip qtwebkit-examples -skip qtxmlpatterns
-    make || exit 1
-    $DO_MAKE_INSTALL || exit 1
-    cd ..
-    touch qt-$QT_VERSION-done
-fi
+    VERSION_MIN_FLAGS="-mmacosx-version-min=$min_osx_target"
 
-if [ "$GTK_VERSION" ]; then
     #
-    # GTK+ 3 requires a newer Cairo build than the one that comes with
-    # 10.6, so we build Cairo if we are using GTK+ 3.
-    #
-    # In 10.6 and 10.7, it's an X11 library; if we build with "native" GTK+
-    # rather than X11 GTK+, we might have to build and install Cairo.
-    # In 10.8 and later, there is no X11, but it's included in Xquartz;
-    # again, if we build with "native" GTK+, we'd have to build and install
-    # it.
+    # Compile and link against the SDK.
     #
-    if [[ "$GTK_MAJOR_VERSION" -eq 3 || "$cairo_not_in_the_os" = yes ]]; then
+    SDKFLAGS="-isysroot $SDKPATH"
+
+    if [[ "$min_osx_target" == "10.5" ]]
+    then
+        #
+        # Cairo is part of Mac OS X 10.6 and later.
+        # The *headers* are supplied by 10.5, but the *libraries*
+        # aren't, so we have to build it if we're building for 10.5.
+        #
+        cairo_not_in_the_os=yes
+
+        #
+        # Build with older versions of the support libraries, as
+        # were used on the Wireshark Leopard buildbot at one
+        # point.  (Most of these versions come from the About page
+        # from Wireshark 1.8.6, the last build done on that buildbot;
+        # the ATK version isn't reported, so this is a guess.)
+        #
+        # If you want to try building with newer versions of
+        # the libraries, note that:
+        #
+        # The version of fontconfig that comes with Leopard doesn't
+        # support FC_WEIGHT_EXTRABLACK, so we can't use any version
+        # of Pango newer than 1.22.4.
+        #
+        # However, Pango 1.22.4 doesn't work with versions of GLib
+        # after 2.29.6, because Pango 1.22.4 uses G_CONST_RETURN and
+        # GLib 2.29.8 and later deprecate it (there doesn't appear to
+        # be a GLib 2.29.7).  That means we'd either have to patch
+        # Pango not to use it (just use "const"; G_CONST_RETURN was
+        # there to allow code to choose whether to use "const" or not),
+        # or use GLib 2.29.6 or earlier.
         #
-        # Requirements for Cairo first
+        # GLib 2.29.6 includes an implementation of g_bit_lock() that,
+        # on x86 (32-bit and 64-bit), uses asms in a fashion
+        # ("asm volatile goto") that requires GCC 4.5 or later, which
+        # is later than the compilers that come with Leopard and Snow
+        # Leopard.  Recent versions of GLib check for that, but 2.29.6
+        # doesn't, so, if you want to build GLib 2.29.6 on Leopard or
+        # Snow Leopard, you would have to patch glib/gbitlock.c to do
+        # what the newer versions of GLib do:
         #
-        # The libpng that comes with the X11 for Leopard has a bogus
-        # pkg-config file that lies about where the header files are,
-        # which causes other packages not to be able to find its
-        # headers.
+        #  define a USE_ASM_GOTO macro that indicates whether "asm goto"
+        #  can be used:
+        #    #if (defined (i386) || defined (__amd64__))
+        #      #if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5)
+        #        #define USE_ASM_GOTO 1
+        #      #endif
+        #    #endif
         #
-        # The libpng in later versions is not what the version of
-        # libpixman we build below wants - it wants libpng15.
+        #  replace all occurrences of
         #
-        if [ ! -f libpng-$PNG_VERSION-done ] ; then
-            echo "Downloading, building, and installing libpng:"
-            #
-            # The FTP site puts libpng x.y.* into a libpngxy directory.
-            #
-            subdir=`echo $PNG_VERSION | sed 's/\([1-9][0-9]*\)\.\([1-9][0-9]*\).*/libpng\1\2'/`
-            [ -f libpng-$PNG_VERSION.tar.xz ] || curl -O ftp://ftp.simplesystems.org/pub/libpng/png/src/$subdir/libpng-$PNG_VERSION.tar.xz
-            xzcat libpng-$PNG_VERSION.tar.xz | tar xf - || exit 1
-            cd libpng-$PNG_VERSION
-            CFLAGS="$CFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" ./configure || exit 1
-            make $MAKE_BUILD_OPTS || exit 1
-            $DO_MAKE_INSTALL || exit 1
-            cd ..
-            touch libpng-$PNG_VERSION-done
-        fi
-
+        #    #if defined (__GNUC__) && (defined (i386) || defined (__amd64__))
         #
-        # The libpixman versions that come with the X11s for Leopard,
-        # Snow Leopard, and Lion is too old to support Cairo's image
-        # surface backend feature (which requires pixman-1 >= 0.22.0).
+        #  with
         #
-        # XXX - what about the one that comes with the latest version
-        # of Xquartz?
+        #    #ifdef USE_ASM_GOTO
         #
-        if [ ! -f pixman-$PIXMAN_VERSION-done ] ; then
-            echo "Downloading, building, and installing pixman:"
-            [ -f pixman-$PIXMAN_VERSION.tar.gz ] || curl -O http://www.cairographics.org/releases/pixman-$PIXMAN_VERSION.tar.gz
-            gzcat pixman-$PIXMAN_VERSION.tar.gz | tar xf - || exit 1
-            cd pixman-$PIXMAN_VERSION
-            CFLAGS="$CFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" ./configure || exit 1
-            make V=1 $MAKE_BUILD_OPTS || exit 1
-            $DO_MAKE_INSTALL || exit 1
-            cd ..
-            touch pixman-$PIXMAN_VERSION-done
-        fi
-
+        # Using GLib 2.29.6 or earlier, however, means that we can't
+        # use a version of ATK later than 2.3.93, as those versions
+        # don't work with GLib 2.29.6.  The same applies to gdk-pixbuf;
+        # versions of gdk-pixbuf after 2.24.1 won't work with GLib
+        # 2.29.6.
         #
-        # And now Cairo itself.
-        # XXX - with the libxcb that comes with 10.6,
+        # Then you have to make sure that what you've build doesn't
+        # cause the X server that comes with Leopard to crash; at
+        # least one attempt at building for Leopard did.
         #
-        # xcb_discard_reply() is missing, and the build fails.
+        # At least if building on Leopard, you might also find
+        # that, with various older versions of Cairo, including
+        # 1.6.4 and at least some 1.8.x versions, when you try to
+        # build it, the build fails because it can't find
+        # png_set_longjmp_fn().  I vaguely remember dealing with that,
+        # ages ago, but don't remember what I did.
         #
-        if [ ! -f cairo-$CAIRO_VERSION-done ] ; then
-            echo "Downloading, building, and installing Cairo:"
-            CAIRO_MAJOR_VERSION="`expr $CAIRO_VERSION : '\([0-9][0-9]*\).*'`"
-            CAIRO_MINOR_VERSION="`expr $CAIRO_VERSION : '[0-9][0-9]*\.\([0-9][0-9]*\).*'`"
-            CAIRO_DOTDOT_VERSION="`expr $CAIRO_VERSION : '[0-9][0-9]*\.[0-9][0-9]*\.\([0-9][0-9]*\).*'`"
-            if [[ $CAIRO_MAJOR_VERSION -gt 1 ||
-                  $CAIRO_MINOR_VERSION -gt 12 ||
-                  ($CAIRO_MINOR_VERSION -eq 12 && $CAIRO_DOTDOT_VERSION -ge 2) ]]
-            then
-                #
-                # Starting with Cairo 1.12.2, the tarballs are compressed with
-                # xz rather than gzip.
-                #
-                [ -f cairo-$CAIRO_VERSION.tar.xz ] || curl -O http://cairographics.org/releases/cairo-$CAIRO_VERSION.tar.xz || exit 1
-                xzcat cairo-$CAIRO_VERSION.tar.xz | tar xf - || exit 1
-            else
-                [ -f cairo-$CAIRO_VERSION.tar.gz ] || curl -O http://cairographics.org/releases/cairo-$CAIRO_VERSION.tar.gz || exit 1
-                gzcat cairo-$CAIRO_VERSION.tar.gz | tar xf - || exit 1
-            fi
-            cd cairo-$CAIRO_VERSION
-            # CFLAGS="$CFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" ./configure --enable-quartz=no || exit 1
-            # Maybe follow http://cairographics.org/end_to_end_build_for_mac_os_x/
-            CFLAGS="$CFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" ./configure --enable-quartz=yes || exit 1
-            #
-            # We must avoid the version of libpng that comes with X11; the
-            # only way I've found to force that is to forcibly set INCLUDES
-            # when we do the build, so that this comes before CAIRO_CFLAGS,
-            # which has -I/usr/X11/include added to it before anything
-            # connected to libpng is.
-            #
-            INCLUDES="-I/usr/local/include/libpng15" make $MAKE_BUILD_OPTS || exit 1
-            $DO_MAKE_INSTALL || exit 1
-            cd ..
-            touch cairo-$CAIRO_VERSION-done
+        GLIB_VERSION=2.16.3
+        if [ "$CAIRO_VERSION" ]
+        then
+            CAIRO_VERSION=1.6.4
         fi
-    fi
-
-    if [ ! -f atk-$ATK_VERSION-done ] ; then
-        echo "Downloading, building, and installing ATK:"
-        atk_dir=`expr $ATK_VERSION : '\([0-9][0-9]*\.[0-9][0-9]*\).*'`
-        ATK_MAJOR_VERSION="`expr $ATK_VERSION : '\([0-9][0-9]*\).*'`"
-        ATK_MINOR_VERSION="`expr $ATK_VERSION : '[0-9][0-9]*\.\([0-9][0-9]*\).*'`"
-        ATK_DOTDOT_VERSION="`expr $ATK_VERSION : '[0-9][0-9]*\.[0-9][0-9]*\.\([0-9][0-9]*\).*'`"
-        if [[ $ATK_MAJOR_VERSION -gt 2 ||
-              ($ATK_MAJOR_VERSION -eq 2 && $ATK_MINOR_VERSION -gt 0) ||
-              ($ATK_MANOR_VERSION -eq 2 && $ATK_MINOR_VERSION -eq 0 && $ATK_DOTDOT_VERSION -ge 1) ]]
+        if [ "$ATK_VERSION" ]
         then
-            #
-            # Starting with ATK 2.0.1, xz-compressed tarballs are available.
-            #
-            [ -f atk-$ATK_VERSION.tar.xz ] || curl -O http://ftp.gnome.org/pub/gnome/sources/atk/$atk_dir/atk-$ATK_VERSION.tar.xz || exit 1
-            xzcat atk-$ATK_VERSION.tar.xz | tar xf - || exit 1
-        else
-            [ -f atk-$ATK_VERSION.tar.bz2 ] || curl -O http://ftp.gnome.org/pub/gnome/sources/atk/$atk_dir/atk-$ATK_VERSION.tar.bz2 || exit 1
-            bzcat atk-$ATK_VERSION.tar.bz2 | tar xf - || exit 1
+            ATK_VERSION=1.24.0
         fi
-        cd atk-$ATK_VERSION
-        CFLAGS="$CFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" ./configure || exit 1
-        make $MAKE_BUILD_OPTS || exit 1
-        $DO_MAKE_INSTALL || exit 1
-        cd ..
-        touch atk-$ATK_VERSION-done
-    fi
-
-    if [ ! -f pango-$PANGO_VERSION-done ] ; then
-        echo "Downloading, building, and installing Pango:"
-        pango_dir=`expr $PANGO_VERSION : '\([0-9][0-9]*\.[0-9][0-9]*\).*'`
-        PANGO_MAJOR_VERSION="`expr $PANGO_VERSION : '\([0-9][0-9]*\).*'`"
-        PANGO_MINOR_VERSION="`expr $PANGO_VERSION : '[0-9][0-9]*\.\([0-9][0-9]*\).*'`"
-        if [[ $PANGO_MAJOR_VERSION -gt 1 ||
-              $PANGO_MINOR_VERSION -ge 29 ]]
+        if [ "$PANGO_VERSION" ]
         then
-            #
-            # Starting with Pango 1.29, the tarballs are compressed with
-            # xz rather than bzip2.
-            #
-            [ -f pango-$PANGO_VERSION.tar.xz ] || curl -L -O http://ftp.gnome.org/pub/gnome/sources/pango/$pango_dir/pango-$PANGO_VERSION.tar.xz || exit 1
-            xzcat pango-$PANGO_VERSION.tar.xz | tar xf - || exit 1
-        else
-            [ -f pango-$PANGO_VERSION.tar.bz2 ] || curl -L -O http://ftp.gnome.org/pub/gnome/sources/pango/$pango_dir/pango-$PANGO_VERSION.tar.bz2 || exit 1
-            bzcat pango-$PANGO_VERSION.tar.bz2 | tar xf - || exit 1
+            PANGO_VERSION=1.20.2
+        fi
+        if [ "$GTK_VERSION" ]
+        then
+            GTK_VERSION=2.12.9
         fi
-        cd pango-$PANGO_VERSION
-        CFLAGS="$CFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" ./configure || exit 1
-        make $MAKE_BUILD_OPTS || exit 1
-        $DO_MAKE_INSTALL || exit 1
-        cd ..
-        touch pango-$PANGO_VERSION-done
-    fi
 
-    if [ "$GDK_PIXBUF_VERSION" -a ! -f gdk-pixbuf-$GDK_PIXBUF_VERSION-done ] ; then
-        echo "Downloading, building, and installing gdk-pixbuf:"
-        gdk_pixbuf_dir=`expr $GDK_PIXBUF_VERSION : '\([0-9][0-9]*\.[0-9][0-9]*\).*'`
-        [ -f gdk-pixbuf-$GDK_PIXBUF_VERSION.tar.xz ] || curl -L -O http://ftp.gnome.org/pub/gnome/sources/gdk-pixbuf/$gdk_pixbuf_dir/gdk-pixbuf-$GDK_PIXBUF_VERSION.tar.xz || exit 1
-        xzcat gdk-pixbuf-$GDK_PIXBUF_VERSION.tar.xz | tar xf - || exit 1
-        cd gdk-pixbuf-$GDK_PIXBUF_VERSION
         #
-        # If we're building for 10.6, use libpng12; if you have 10.7.5, including
-        # X11, and Xcode 4.3.3, the system has libpng15, complete with pkg-config
-        # files, as part of X11, but 10.6's X11 has only libpng12, and the 10.6
-        # SDK in Xcode 4.3.3 also has only libpng12, and has no pkg-config files
-        # of its own, so we have to explicitly set LIBPNG to override the
-        # configure script, and also force the CFLAGS to look for the header
-        # files for libpng12 (note that -isysroot doesn't affect the arguments
-        # to -I, so we need to include the SDK path explicitly).
+        # That version of GTK+ includes gdk-pixbuf.
+        # XXX - base this on the version of GTK+ requested.
         #
-        if [[ "$min_osx_target" = 10.6 ]]
-        then
-            LIBPNG="-L/usr/X11/lib -lpng12" CFLAGS="$CFLAGS $VERSION_MIN_FLAGS $SDKFLAGS -I$SDKPATH/usr/X11/include/libpng12" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" ./configure --without-libtiff --without-libjpeg || exit 1
-        else
-            CFLAGS="$CFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" ./configure --without-libtiff --without-libjpeg || exit 1
-        fi
-        make $MAKE_BUILD_OPTS || exit 1
-        $DO_MAKE_INSTALL || exit 1
-        cd ..
-        touch gdk-pixbuf-$GDK_PIXBUF_VERSION-done
-    fi
+        GDK_PIXBUF_VERSION=
 
-    if [ ! -f gtk+-$GTK_VERSION-done ] ; then
-        echo "Downloading, building, and installing GTK+:"
-        gtk_dir=`expr $GTK_VERSION : '\([0-9][0-9]*\.[0-9][0-9]*\).*'`
-        if [[ $GTK_MAJOR_VERSION -gt 2 ||
-              $GTK_MINOR_VERSION -gt 24 ||
-             ($GTK_MINOR_VERSION -eq 24 && $GTK_DOTDOT_VERSION -ge 5) ]]
-        then
-            #
-            # Starting with GTK+ 2.24.5, the tarballs are compressed with
-            # xz rather than gzip, in addition to bzip2; use xz, as we've
-            # built and installed it, and as xz compresses better than
-            # bzip2 so the tarballs take less time to download.
-            #
-            [ -f gtk+-$GTK_VERSION.tar.xz ] || curl -L -O http://ftp.gnome.org/pub/gnome/sources/gtk+/$gtk_dir/gtk+-$GTK_VERSION.tar.xz || exit 1
-            xzcat gtk+-$GTK_VERSION.tar.xz | tar xf - || exit 1
-        else
-            [ -f gtk+-$GTK_VERSION.tar.bz2 ] || curl -L -O http://ftp.gnome.org/pub/gnome/sources/gtk+/$gtk_dir/gtk+-$GTK_VERSION.tar.bz2 || exit 1
-            bzcat gtk+-$GTK_VERSION.tar.bz2 | tar xf - || exit 1
-        fi
-        cd gtk+-$GTK_VERSION
-        if [ $DARWIN_MAJOR_VERSION -ge "12" ]
-        then
-            #
-            # GTK+ 2.24.10, at least, doesn't build on Mountain Lion with the
-            # CUPS printing backend - either the CUPS API changed incompatibly
-            # or the backend was depending on non-API implementation details.
-            #
-            # Configure it out, on Mountain Lion and later, for now.
-            # (12 is the Darwin major version number in Mountain Lion.)
-            #
-            # Also, configure out libtiff and libjpeg; configure scripts
-            # just ignore unknown --enable/--disable and --with/--without
-            # options (at least they've always do so up to now).
-            #
-            CFLAGS="$CFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" ./configure --disable-cups --without-libtiff --without-libjpeg || exit 1
-        else
-            CFLAGS="$CFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" ./configure --without-libtiff --without-libjpeg || exit 1
-        fi
-        make $MAKE_BUILD_OPTS || exit 1
-        $DO_MAKE_INSTALL || exit 1
-        cd ..
-        touch gtk+-$GTK_VERSION-done
+        #
+        # Libgcrypt 1.5.0 fails to compile due to some problem with an
+        # asm in rijndael.c, at least with i686-apple-darwin10-gcc-4.2.1
+        # (GCC) 4.2.1 (Apple Inc. build 5666) (dot 3) when building
+        # 32-bit.
+        #
+        # We try libgcrypt 1.4.3 instead, as that's what shows up in
+        # the version from the Leopard buildbot.
+        LIBGCRYPT_VERSION=1.4.3
+
+        #
+        # Build 32-bit while we're at it; Leopard has a bug that
+        # causes some BPF functions not to work with 64-bit userland
+        # code, so capturing won't work.
+        #
+        CFLAGS="$CFLAGS -arch i386"
+        CXXFLAGS="$CXXFLAGS -arch i386"
+        export LDFLAGS="$LDFLAGS -arch i386"
     fi
 fi
 
+export CFLAGS
+export CXXFLAGS
+
 #
-# Now we have reached a point where we can build everything including
-# the GUI (Wireshark), but not with any optional features such as
-# SNMP OID resolution, some forms of decryption, Lua scripting, playback
-# of audio, or GeoIP mapping of IP addresses.
-#
-# We now conditionally download optional libraries to support them;
-# the default is to download them all.
+# You need Xcode or the command-line tools installed to get the compilers.
 #
-
-if [ "$LIBSMI_VERSION" -a ! -f libsmi-$LIBSMI_VERSION-done ] ; then
-    echo "Downloading, building, and installing libsmi:"
-    [ -f libsmi-$LIBSMI_VERSION.tar.gz ] || curl -L -O ftp://ftp.ibr.cs.tu-bs.de/pub/local/libsmi/libsmi-$LIBSMI_VERSION.tar.gz || exit 1
-    gzcat libsmi-$LIBSMI_VERSION.tar.gz | tar xf - || exit 1
-    cd libsmi-$LIBSMI_VERSION
-    CFLAGS="$CFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" ./configure || exit 1
-    make $MAKE_BUILD_OPTS || exit 1
-    $DO_MAKE_INSTALL || exit 1
-    cd ..
-    touch libsmi-$LIBSMI_VERSION-done
-fi
-
-if [ "$LIBGPG_ERROR_VERSION" -a ! -f libgpg-error-$LIBGPG_ERROR_VERSION-done ] ; then
-    echo "Downloading, building, and installing libgpg-error:"
-    [ -f libgpg-error-$LIBGPG_ERROR_VERSION.tar.bz2 ] || curl -L -O ftp://ftp.gnupg.org/gcrypt/libgpg-error/libgpg-error-$LIBGPG_ERROR_VERSION.tar.bz2 || exit 1
-    bzcat libgpg-error-$LIBGPG_ERROR_VERSION.tar.bz2 | tar xf - || exit 1
-    cd libgpg-error-$LIBGPG_ERROR_VERSION
-    CFLAGS="$CFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" ./configure || exit 1
-    make $MAKE_BUILD_OPTS || exit 1
-    $DO_MAKE_INSTALL || exit 1
-    cd ..
-    touch libgpg-error-$LIBGPG_ERROR_VERSION-done
+if [ ! -x /usr/bin/xcodebuild ]; then
+    echo "Please install Xcode first (should be available on DVD or from http://developer.apple.com/xcode/index.php)."
+    exit 1
 fi
 
-if [ "$LIBGCRYPT_VERSION" -a ! -f libgcrypt-$LIBGCRYPT_VERSION-done ] ; then
+if [ "$QT_VERSION" ]; then
     #
-    # libgpg-error is required for libgcrypt.
+    # We need Xcode, not just the command-line tools, installed to build
+    # Qt.
     #
-    if [ -z $LIBGPG_ERROR_VERSION ]
-    then
-        echo "libgcrypt requires libgpg-error, but you didn't install libgpg-error." 1>&2
+    if ! /usr/bin/xcrun -find xcrun >/dev/null 2>&1; then
+        echo "Please install Xcode first (should be available on DVD or from http://developer.apple.com/xcode/index.php)."
+        echo "The command-line build tools are not sufficient to build Qt."
         exit 1
     fi
-
-    echo "Downloading, building, and installing libgcrypt:"
-    [ -f libgcrypt-$LIBGCRYPT_VERSION.tar.gz ] || curl -L -O ftp://ftp.gnupg.org/gcrypt/libgcrypt/libgcrypt-$LIBGCRYPT_VERSION.tar.gz || exit 1
-    gzcat libgcrypt-$LIBGCRYPT_VERSION.tar.gz | tar xf - || exit 1
-    cd libgcrypt-$LIBGCRYPT_VERSION
-    #
-    # The assembler language code is not compatible with the OS X
-    # x86 assembler (or is it an x86-64 vs. x86-32 issue?).
-    #
-    # libgcrypt expects gnu89, not c99/gnu99, semantics for
-    # "inline".  See, for example:
-    #
-    #    http://lists.freebsd.org/pipermail/freebsd-ports-bugs/2010-October/198809.html
-    #
-    CFLAGS="$CFLAGS -std=gnu89 $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" ./configure --disable-asm || exit 1
-    make $MAKE_BUILD_OPTS || exit 1
-    $DO_MAKE_INSTALL || exit 1
-    cd ..
-    touch libgcrypt-$LIBGCRYPT_VERSION-done
 fi
-
-if [ "$GNUTLS_VERSION" -a ! -f gnutls-$GNUTLS_VERSION-done ] ; then
+if [ "$GTK_VERSION" ]; then
     #
-    # GnuTLS requires libgcrypt (or nettle, in newer versions).
+    # If we're building with GTK+, you also need the X11 SDK; with at least
+    # some versions of OS X and Xcode, that is, I think, an optional install.
+    # (Or it might be installed with X11, but I think *that* is an optional
+    # install on at least some versions of OS X.)
     #
-    if [ -z $LIBGCRYPT_VERSION ]
-    then
-        echo "GnuTLS requires libgcrypt, but you didn't install libgcrypt" 1>&2
+    if [ ! -d /usr/X11/include ]; then
+        echo "Please install X11 and the X11 SDK first."
+        echo "  You can either use http://xquartz.macosforge.org/, e.g."
+        echo "  http://xquartz-dl.macosforge.org/SL/XQuartz-$XQUARTZ_VERSION.dmg"
+        echo "  or the native Apple packages if you are on Lion or below."
         exit 1
     fi
-
-    echo "Downloading, building, and installing GnuTLS:"
-    [ -f gnutls-$GNUTLS_VERSION.tar.bz2 ] || curl -L -O http://ftp.gnu.org/gnu/gnutls/gnutls-$GNUTLS_VERSION.tar.bz2 || exit 1
-    bzcat gnutls-$GNUTLS_VERSION.tar.bz2 | tar xf - || exit 1
-    cd gnutls-$GNUTLS_VERSION
-    #
-    # Use libgcrypt, not nettle.
-    # XXX - is there some reason to prefer nettle?  Or does
-    # Wireshark directly use libgcrypt routines?
-    #
-    CFLAGS="$CFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" ./configure --with-libgcrypt --without-p11-kit || exit 1
-    make $MAKE_BUILD_OPTS || exit 1
-    #
-    # The pkgconfig file for GnuTLS says "requires zlib", but OS X,
-    # while it supplies zlib, doesn't supply a pkgconfig file for
-    # it.
-    #
-    # Patch the GnuTLS pkgconfig file not to require zlib.
-    # (If the capabilities of GnuTLS that Wireshark uses don't
-    # depend on building GnuTLS with zlib, an alternative would be
-    # to configure it not to use zlib.)
-    #
-    patch -p0 lib/gnutls.pc.in <../../macosx-support-lib-patches/gnutls-pkgconfig.patch || exit 1
-    $DO_MAKE_INSTALL || exit 1
-    cd ..
-    touch gnutls-$GNUTLS_VERSION-done
-fi
-
-if [ "$LUA_VERSION" -a ! -f lua-$LUA_VERSION-done ] ; then
-    echo "Downloading, building, and installing Lua:"
-    [ -f lua-$LUA_VERSION.tar.gz ] || curl -L -O http://www.lua.org/ftp/lua-$LUA_VERSION.tar.gz || exit 1
-    gzcat lua-$LUA_VERSION.tar.gz | tar xf - || exit 1
-    cd lua-$LUA_VERSION
-    make $MAKE_BUILD_OPTS macosx || exit 1
-    $DO_MAKE_INSTALL || exit 1
-    cd ..
-    touch lua-$LUA_VERSION-done
 fi
 
-if [ "$PORTAUDIO_VERSION" -a ! -f portaudio-done ] ; then
-    echo "Downloading, building, and installing PortAudio:"
-    [ -f $PORTAUDIO_VERSION.tgz ] || curl -L -O http://www.portaudio.com/archives/$PORTAUDIO_VERSION.tgz || exit 1
-    gzcat $PORTAUDIO_VERSION.tgz | tar xf - || exit 1
-    cd portaudio
-    #
-    # Un-comment an include that's required on Lion.
-    #
-    patch -p0 include/pa_mac_core.h <../../macosx-support-lib-patches/portaudio-pa_mac_core.h.patch
-    #
-    # Fix a bug that showed up with clang (but is a bug with any
-    # compiler).
-    #
-    patch -p0 src/hostapi/coreaudio/pa_mac_core.c <../../macosx-support-lib-patches/portaudio-pa_mac_core.c.patch
-    #
-    # Disable fat builds - the configure script doesn't work right
-    # with Xcode 4 if you leave them enabled, and we don't build
-    # any other libraries fat (GLib, for example, would be very
-    # hard to build fat), so there's no advantage to having PortAudio
-    # built fat.
-    #
-    # Set the minimum OS X version to 10.4, to suppress some
-    # deprecation warnings.  (Good luck trying to make any of
-    # this build on an OS+Xcode with a pre-10.4 SDK; we don't
-    # worry about the user requesting that.)
-    #
-    CFLAGS="$CFLAGS -mmacosx-version-min=10.4 $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" ./configure --disable-mac-universal || exit 1
-    make $MAKE_BUILD_OPTS || exit 1
-    $DO_MAKE_INSTALL || exit 1
-    cd ..
-    touch portaudio-done
-fi
+export PKG_CONFIG_PATH=/usr/local/lib/pkgconfig:/usr/X11/lib/pkgconfig
 
-if [ "$GEOIP_VERSION" -a ! -f geoip-$GEOIP_VERSION-done ]
+#
+# Do all the downloads and untarring in a subdirectory, so all that
+# stuff can be removed once we've installed the support libraries.
+#
+if [ ! -d macosx-support-libs ]
 then
-    echo "Downloading, building, and installing GeoIP API:"
-    [ -f GeoIP-$GEOIP_VERSION.tar.gz ] || curl -L -O http://geolite.maxmind.com/download/geoip/api/c/GeoIP-$GEOIP_VERSION.tar.gz || exit 1
-    gzcat GeoIP-$GEOIP_VERSION.tar.gz | tar xf - || exit 1
-    cd GeoIP-$GEOIP_VERSION
-    CFLAGS="$CFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" ./configure || exit 1
-    #
-    # Grr.  Their man pages "helpfully" have an ISO 8859-1
-    # copyright symbol in the copyright notice, but OS X's
-    # default character encoding is UTF-8.  sed on Mountain
-    # Lion barfs at the "illegal character sequence" represented
-    # by an ISO 8859-1 copyright symbol, as it's not a valid
-    # UTF-8 sequence.
-    #
-    # iconv the relevant man pages into UTF-8.
-    #
-    for i in geoipupdate.1.in geoiplookup6.1.in geoiplookup.1.in
-    do
-        iconv -f iso8859-1 -t utf-8 man/"$i" >man/"$i".tmp &&
-            mv man/"$i".tmp man/"$i"
-    done
-    make $MAKE_BUILD_OPTS || exit 1
-    $DO_MAKE_INSTALL || exit 1
-    cd ..
-    touch geoip-$GEOIP_VERSION-done
+    mkdir macosx-support-libs || exit 1
 fi
+cd macosx-support-libs
 
-if [ "$CARES_VERSION" -a ! -f geoip-$CARES_VERSION-done ]
-then
-    echo "Downloading, building, and installing C-Ares API:"
-    [ -f c-ares-$CARES_VERSION.tar.gz ] || curl -L -O http://c-ares.haxx.se/download/c-ares-$CARES_VERSION.tar.gz || exit 1
-    gzcat c-ares-$CARES_VERSION.tar.gz | tar xf - || exit 1
-    cd c-ares-$CARES_VERSION
-    CFLAGS="$CFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" LDFLAGS="$LDFLAGS $VERSION_MIN_FLAGS $SDKFLAGS" ./configure || exit 1
-    make $MAKE_BUILD_OPTS || exit 1
-    $DO_MAKE_INSTALL || exit 1
-    cd ..
-    touch geoip-$CARES_VERSION-done
-fi
+install_all
 
 echo ""
 
-echo "You are now prepared to build Wireshark. To do so do:"
-echo "export PKG_CONFIG_PATH=/usr/local/lib/pkgconfig:/usr/X11/lib/pkgconfig"
-echo ""
-if [ -n "$CMAKE" ]; then
+#
+# Indicate what paths to use for pkg-config and cmake.
+#
+pkg_config_path=/usr/local/lib/pkgconfig
+if [ "$QT_VERSION" ]; then
+    qt_base_path=$HOME/Qt$QT_VERSION/$QT_MAJOR_MINOR_VERSION/clang_64
+    pkg_config_path="$pkg_config_path":"$qt_base_path/lib/pkgconfig"
+    CMAKE_PREFIX_PATH="$CMAKE_PREFIX_PATH":"$qt_base_path/lib/cmake"
+fi
+pkg_config_path="$pkg_config_path":/usr/X11/lib/pkgconfig
+
+echo "You are now prepared to build Wireshark."
+echo
+if [[ $CMAKE ]]; then
+    echo "To build with CMAKE:"
+    echo
+    echo "export PKG_CONFIG_PATH=$pkg_config_path"
+    echo "export CMAKE_PREFIX_PATH=$CMAKE_PREFIX_PATH"
+    echo "export PATH=$PATH:$qt_base_path/bin"
+    echo
     echo "mkdir build; cd build"
     echo "cmake .."
+    echo "make $MAKE_BUILD_OPTS app_bundle"
+    echo "make install/strip"
+    echo
+fi
+if [[ $AUTOTOOLS ]]; then
+    echo "To build with AUTOTOOLS:"
     echo
-    echo "or"
+    echo "export PKG_CONFIG_PATH=$pkg_config_path"
+    echo
+    echo "./autogen.sh"
+    echo "mkdir build; cd build"
+    echo "../configure"
+    echo "make $MAKE_BUILD_OPTS"
+    echo "make install"
     echo
 fi
-echo "./autogen.sh"
-echo "mkdir build; cd build"
-echo "../configure"
-echo ""
-echo "make $MAKE_BUILD_OPTS"
-echo "make install"
-
-echo ""
-
 echo "Make sure you are allowed capture access to the network devices"
-echo "See: http://wiki.wireshark.org/CaptureSetup/CapturePrivileges"
-
-echo ""
+echo "See: https://wiki.wireshark.org/CaptureSetup/CapturePrivileges"
+echo
 
 exit 0