1 dnl SMB Build Environment CC Checks
2 dnl -------------------------------------------------------
3 dnl Copyright (C) Stefan (metze) Metzmacher 2004
4 dnl Released under the GNU GPL
5 dnl -------------------------------------------------------
8 AC_LIBREPLACE_CC_CHECKS
11 # Set the debug symbol option if we have
12 # --enable-*developer or --enable-debug
13 # and the compiler supports it
15 if test x$ac_cv_prog_cc_g = xyes -a x$debug = xyes; then
19 dnl ###########################################################################
20 dnl _AC_LANG_COMPILER_SUNCC
21 dnl Check whether the compiler for the current language is really Sun compiler.
22 dnl ###########################################################################
23 m4_define([AC_LANG_COMPILER_SUNCC],
24 [AC_CACHE_CHECK([whether we are really using the Sun _AC_LANG compiler],
25 [ac_cv_[]_AC_LANG_ABBREV[]_compiler_suncc],
26 [_AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [[#ifndef __SUNPRO_C
30 [ac_compiler_suncc=yes],
31 [ac_compiler_suncc=no])
32 ac_cv_[]_AC_LANG_ABBREV[]_compiler_suncc=$ac_compiler_suncc
35 AC_LANG_COMPILER_SUNCC
37 ############################################
38 # check if the compiler handles c99 struct initialization
39 LIBREPLACE_C99_STRUCT_INIT(samba_cv_c99_struct_initialization=yes,
40 samba_cv_c99_struct_initialization=no)
42 if test x"$samba_cv_c99_struct_initialization" != x"yes"; then
43 AC_MSG_WARN([C compiler does not support c99 struct initialization!])
44 AC_MSG_ERROR([Please Install gcc from http://gcc.gnu.org/])
47 ############################################
48 # check if the compiler can handle negative enum values
49 # and don't truncate the values to INT_MAX
50 # a runtime test is needed here
51 AC_CACHE_CHECK([that the C compiler understands negative enum values],samba_cv_CC_NEGATIVE_ENUM_VALUES, [
55 enum negative_values { NEGATIVE_VALUE = 0xFFFFFFFF };
57 enum negative_values v1 = NEGATIVE_VALUE;
58 unsigned v2 = 0xFFFFFFFF;
60 printf("v1=0x%08x v2=0x%08x\n", v1, v2);
66 samba_cv_CC_NEGATIVE_ENUM_VALUES=yes,
67 samba_cv_CC_NEGATIVE_ENUM_VALUES=no,
68 samba_cv_CC_NEGATIVE_ENUM_VALUES=yes)])
69 if test x"$samba_cv_CC_NEGATIVE_ENUM_VALUES" != x"yes"; then
70 AC_DEFINE(USE_UINT_ENUMS, 1, [Whether the compiler has uint enum support])
73 AC_MSG_CHECKING([for test routines])
74 AC_TRY_RUN([#include "${srcdir-.}/../tests/trivial.c"],
76 AC_MSG_ERROR([cant find test code. Aborting config]),
77 AC_MSG_WARN([cannot run when cross-compiling]))
80 # Check if the compiler support ELF visibility for symbols
83 visibility_attribute=no
85 if test x"$GCC" = x"yes" ; then
86 AX_CFLAGS_GCC_OPTION([-fvisibility=hidden], VISIBILITY_CFLAGS)
89 if test -n "$VISIBILITY_CFLAGS"; then
90 AC_MSG_CHECKING([whether the C compiler supports the visibility attribute])
93 CFLAGS="$CFLAGS $VISIBILITY_CFLAGS"
95 void vis_foo1(void) {}
96 __attribute__((visibility("default"))) void vis_foo2(void) {}
100 AC_DEFINE(HAVE_VISIBILITY_ATTR,1,[Whether the C compiler supports the visibility attribute])
101 visibility_attribute=yes
107 AC_SUBST(visibility_attribute)
110 # Check if the compiler can handle the options we selected by
111 # --enable-*developer
114 if test x$developer = xyes; then
115 OLD_CFLAGS="${CFLAGS}"
117 CFLAGS="${CFLAGS} -D_SAMBA_DEVELOPER_DONNOT_USE_O2_"
118 DEVELOPER_CFLAGS="-DDEBUG_PASSWORD -DDEVELOPER"
119 if test x"$GCC" = x"yes" ; then
121 # warnings we want...
123 AX_CFLAGS_GCC_OPTION(-Wall, DEVELOPER_CFLAGS)
124 AX_CFLAGS_GCC_OPTION(-Wshadow, DEVELOPER_CFLAGS)
125 AX_CFLAGS_GCC_OPTION(-Werror-implicit-function-declaration, DEVELOPER_CFLAGS)
126 AX_CFLAGS_GCC_OPTION(-Wstrict-prototypes, DEVELOPER_CFLAGS)
127 AX_CFLAGS_GCC_OPTION(-Wpointer-arith, DEVELOPER_CFLAGS)
128 AX_CFLAGS_GCC_OPTION(-Wcast-qual, DEVELOPER_CFLAGS)
129 AX_CFLAGS_GCC_OPTION(-Wcast-align, DEVELOPER_CFLAGS)
130 AX_CFLAGS_GCC_OPTION(-Wwrite-strings, DEVELOPER_CFLAGS)
131 AX_CFLAGS_GCC_OPTION(-Wmissing-format-attribute, DEVELOPER_CFLAGS)
132 AX_CFLAGS_GCC_OPTION(-Wformat=2, DEVELOPER_CFLAGS)
133 AX_CFLAGS_GCC_OPTION(-Wdeclaration-after-statement, DEVELOPER_CFLAGS)
134 AX_CFLAGS_GCC_OPTION(-Wunused-macros, DEVELOPER_CFLAGS)
135 # AX_CFLAGS_GCC_OPTION(-Wextra, DEVELOPER_CFLAGS)
136 # AX_CFLAGS_GCC_OPTION(-Wc++-compat, DEVELOPER_CFLAGS)
137 # AX_CFLAGS_GCC_OPTION(-Wmissing-prototypes, DEVELOPER_CFLAGS)
138 # AX_CFLAGS_GCC_OPTION(-Wmissing-declarations, DEVELOPER_CFLAGS)
139 # AX_CFLAGS_GCC_OPTION(-Wmissing-field-initializers, DEVELOPER_CFLAGS)
141 # warnings we don't want...
143 AX_CFLAGS_GCC_OPTION(-Wno-format-y2k, DEVELOPER_CFLAGS)
144 AX_CFLAGS_GCC_OPTION(-Wno-unused-parameter, DEVELOPER_CFLAGS)
146 # warnings we don't want just for some files e.g. swig bindings
148 AX_CFLAGS_GCC_OPTION(-Wno-cast-qual, CFLAG_NO_CAST_QUAL)
149 AC_SUBST(CFLAG_NO_CAST_QUAL)
150 AX_CFLAGS_GCC_OPTION(-Wno-unused-macros, CFLAG_NO_UNUSED_MACROS)
151 AC_SUBST(CFLAG_NO_UNUSED_MACROS)
152 elif test x"$ac_cv_c_compiler_suncc" != x"yes"; then
153 AX_CFLAGS_IRIX_OPTION(-fullwarn, DEVELOPER_CFLAGS)
156 CFLAGS="${OLD_CFLAGS}"
158 if test -n "$DEVELOPER_CFLAGS"; then
159 OLD_CFLAGS="${CFLAGS}"
160 CFLAGS="${CFLAGS} ${DEVELOPER_CFLAGS}"
161 AC_MSG_CHECKING([that the C compiler can use the DEVELOPER_CFLAGS])
162 AC_TRY_COMPILE([],[],
164 DEVELOPER_CFLAGS=""; AC_MSG_RESULT(no))
165 CFLAGS="${OLD_CFLAGS}"
168 # allow for --with-hostcc=gcc
169 AC_ARG_WITH(hostcc,[ --with-hostcc=compiler choose host compiler],
172 if test z"$cross_compiling" = "yes"; then
180 AC_PATH_PROG(GCOV,gcov)