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Diffstat (limited to '')
-rw-r--r-- | libraries/eina/m4/common/efl_compiler_flag.m4 | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/libraries/eina/m4/common/efl_compiler_flag.m4 b/libraries/eina/m4/common/efl_compiler_flag.m4 new file mode 100644 index 0000000..25c285d --- /dev/null +++ b/libraries/eina/m4/common/efl_compiler_flag.m4 | |||
@@ -0,0 +1,57 @@ | |||
1 | dnl Copyright (C) 2010 Vincent Torri <vtorri at univ-evry dot fr> | ||
2 | dnl and Albin Tonnerre <albin dot tonnerre at gmail dot com> | ||
3 | dnl That code is public domain and can be freely used or copied. | ||
4 | |||
5 | dnl Macro that checks if a compiler flag is supported by the compiler. | ||
6 | |||
7 | dnl Usage: EFL_COMPILER_FLAG(flag) | ||
8 | dnl flag is added to CFLAGS if supported. | ||
9 | |||
10 | AC_DEFUN([EFL_COMPILER_FLAG], | ||
11 | [ | ||
12 | |||
13 | CFLAGS_save="${CFLAGS}" | ||
14 | CFLAGS="${CFLAGS} $1" | ||
15 | |||
16 | AC_LANG_PUSH([C]) | ||
17 | AC_MSG_CHECKING([whether the compiler supports $1]) | ||
18 | |||
19 | AC_COMPILE_IFELSE( | ||
20 | [AC_LANG_PROGRAM([[]])], | ||
21 | [have_flag="yes"], | ||
22 | [have_flag="no"]) | ||
23 | AC_MSG_RESULT([${have_flag}]) | ||
24 | |||
25 | if test "x${have_flag}" = "xno" ; then | ||
26 | CFLAGS="${CFLAGS_save}" | ||
27 | fi | ||
28 | AC_LANG_POP([C]) | ||
29 | |||
30 | ]) | ||
31 | |||
32 | dnl Macro that checks if a linker flag is supported by the compiler. | ||
33 | |||
34 | dnl Usage: EFL_LINKER_FLAG(flag) | ||
35 | dnl flag is added to LDFLAGS if supported (will be passed to ld anyway). | ||
36 | |||
37 | AC_DEFUN([EFL_LINKER_FLAG], | ||
38 | [ | ||
39 | |||
40 | LDFLAGS_save="${LDFLAGS}" | ||
41 | LDFLAGS="${LDFLAGS} $1" | ||
42 | |||
43 | AC_LANG_PUSH([C]) | ||
44 | AC_MSG_CHECKING([whether the compiler supports $1]) | ||
45 | |||
46 | AC_LINK_IFELSE( | ||
47 | [AC_LANG_PROGRAM([[]])], | ||
48 | [have_flag="yes"], | ||
49 | [have_flag="no"]) | ||
50 | AC_MSG_RESULT([${have_flag}]) | ||
51 | |||
52 | if test "x${have_flag}" = "xno" ; then | ||
53 | LDFLAGS="${LDFLAGS_save}" | ||
54 | fi | ||
55 | AC_LANG_POP([C]) | ||
56 | |||
57 | ]) | ||