3 # This script returns the flags to be fed to "aclocal" to ensure that
4 # it finds GLib's aclocal macros (we assume GTK+ is installed in the
5 # same place as GLib) and pkg-config's aclocal macros.
7 # aclocal will search, by default, only in a directory in the same
8 # tree where it was installed - e.g., if installed in "/usr/bin", it'll
9 # search only in "/usr/share/aclocal", and if installed in "/usr/local/bin",
10 # it'll search only in "/usr/local/share/aclocal".
12 # However, there is no guarantee that GLib, or pkg-config has been installed
13 # there; if either of them hasn't been installed there, aclocal won't find
14 # the autoconf macros for whichever of them wan't, and will complain
19 # if pkg-config is found with a path that ends with "bin/pkg-config",
20 # and the "share/local" directory under the directory at the path
21 # that's the part of the pkg-config path preceding "bin/pkg-config"
22 # isn't the same directory as the directory reported by "aclocal
23 # --print-ac-dir", we include in our output a "-I" flag with that
24 # directory as its argument;
26 # if the "share/local" directory under the directory reported by
27 # "pkg-config --variable=prefix glib-2.0" isn't the same directory
28 # as the directory reported by "aclocal --print-ac-dir", we include
29 # in our output a "-I" flag with the first of those directories as
32 # If either of them *is* the same directory as the directory reported by
33 # "aclocal --print-ac-dir", and we supply that "-I" flag, "aclocal" will
34 # look in that directory twice, and get well and truly confused, reporting
35 # a ton of duplicate macro definitions. This also means that if pkg-config
36 # and Glib are installed with the same prefix, we should only supply one
37 # "-I" flag for both of them.
43 # OK, where will aclocal look by default?
45 aclocal_dir=`aclocal --print-ac-dir`
48 # And where do we want to make sure it looks?
49 # Look for pkg-config first.
51 pkg_config_path=`which pkg-config 2>/dev/null`
52 if [ -z "$pkg_config_path" ]
55 # Either we don't have "which" or it didn't find pkg-config.
57 pkg_config_aclocal_dir=""
60 # OK, we found pkg-config; attempt to find the prefix for it, by
61 # stripping off "bin/pkg-config".
63 pkg_config_prefix=`expr "$pkg_config_path" : '\(.*\)/bin/pkg-config'`
64 if [ -z "$pkg_config_prefix" ]
67 # Well, we couldn't strip it off, for whatever reason.
69 pkg_config_aclocal_dir=""
72 # Now get the path of its aclocal directory.
74 pkg_config_aclocal_dir=$pkg_config_prefix/share/aclocal
79 # Now see where glib is installed.
81 glib_prefix=`pkg-config --variable=prefix glib-2.0 2>/dev/null`
84 # Now get the path of its aclocal directory.
86 if [ -z "$glib_prefix" ]
90 glib_aclocal_dir=$glib_prefix/share/aclocal
94 # Add our aclocal-fallback to the path.
95 # We write out the -I flag for it, and strip off CR and LF, as we may
96 # be writing more -I options, and we want all the options to be on
99 ac_missing_dir=`dirname $0`
100 echo "-I $ac_missing_dir/aclocal-fallback" | tr -d '\012' | tr -d '\015'
103 # If there's no aclocal, aclocal_dir, which is the path where aclocal
104 # searches, will be empty; if we didn't find pkg-config,
105 # pkg_config_aclocal_dir, which is the path where it should search
106 # for pkg-config's macros, will be empty. Add pkg_config_aclocal_dir only
107 # if both it and aclocal_dir are non-empty and different from each other.
109 if [ ! -z "$aclocal_dir" -a ! -z "$pkg_config_aclocal_dir" \
110 -a "$aclocal_dir" != "$pkg_config_aclocal_dir" ]
112 echo " -I $pkg_config_aclocal_dir" | tr -d '\012' | tr -d '\015'
116 # If pkg-config doesn't know about glib-2.0, glib_aclocal_dir will be
117 # empty. (Should we just fail in that case? Does that mean we don't
118 # have GLib installed?)
120 # Add glib_aclocal_dir only if both it and aclocal_dir are non-empty and
121 # different from each other *and* pkg_config_aclocal_dir is different from
122 # glib_aclocal_dir. (We don't need to check whether pkg_config_aclocal_dir
123 # is empty; if it is, then either glib_aclocal_dir is also empty, in which
124 # case we'll bail out before even looking at pkg_config_aclocal_dir, or
125 # it's non-empty, in which case it obviously won't be equal to
126 # pkg_config_aclocal_dir.)
128 if [ ! -z "$aclocal_dir" -a ! -z "$glib_aclocal_dir" \
129 -a "$aclocal_dir" != "$glib_aclocal_dir" \
130 -a "$pkg_config_aclocal_dir" != "$glib_aclocal_dir" ]
132 echo " -I $glib_aclocal_dir" | tr -d '\012' | tr -d '\015'
136 # Put out the final line ending.