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| author | Emmanuele Bassi <ebassi@linux.intel.com> | 2009-06-22 18:15:17 +0100 |
|---|---|---|
| committer | Emmanuele Bassi <ebassi@linux.intel.com> | 2009-06-22 18:16:10 +0100 |
| commit | ca97935596f521e1039e3a765ec21a2114afa33d (patch) | |
| tree | afeb1c1ae72e1341c1a507e51ec1216fe1935909 /build | |
| parent | 4844555a00a691e96ae1b4c9b0fd38ea480d2337 (diff) | |
| download | clutter-gtk-ca97935596f521e1039e3a765ec21a2114afa33d.tar.gz | |
[build] Use AS_COMPILER_FLAGS
We should use the AS_COMPILER_FLAGS m4 macro to allow for graceful
handling of compiler flags on different versions of GCC and on
different compilers.
Diffstat (limited to 'build')
| -rw-r--r-- | build/autotools/Makefile.am | 7 | ||||
| -rw-r--r-- | build/autotools/as-compiler-flag.m4 | 62 |
2 files changed, 68 insertions, 1 deletions
diff --git a/build/autotools/Makefile.am b/build/autotools/Makefile.am index 8b1268d..b911023 100644 --- a/build/autotools/Makefile.am +++ b/build/autotools/Makefile.am @@ -1,3 +1,8 @@ -EXTRA_DIST = shave-libtool.in shave.in shave.m4 introspection.m4 +EXTRA_DIST = \ + shave-libtool.in \ + shave.in \ + shave.m4 \ + introspection.m4 \ + as-compiler-flag.m4 DISTCLEANFILES = shave-libtool shave diff --git a/build/autotools/as-compiler-flag.m4 b/build/autotools/as-compiler-flag.m4 new file mode 100644 index 0000000..0f660cf --- /dev/null +++ b/build/autotools/as-compiler-flag.m4 @@ -0,0 +1,62 @@ +dnl as-compiler-flag.m4 0.1.0 + +dnl autostars m4 macro for detection of compiler flags + +dnl David Schleef <ds@schleef.org> + +dnl $Id: as-compiler-flag.m4,v 1.1 2005/12/15 23:35:19 ds Exp $ + +dnl AS_COMPILER_FLAG(CFLAGS, ACTION-IF-ACCEPTED, [ACTION-IF-NOT-ACCEPTED]) +dnl Tries to compile with the given CFLAGS. +dnl Runs ACTION-IF-ACCEPTED if the compiler can compile with the flags, +dnl and ACTION-IF-NOT-ACCEPTED otherwise. + +AC_DEFUN([AS_COMPILER_FLAG], +[ + AC_MSG_CHECKING([to see if compiler understands $1]) + + save_CFLAGS="$CFLAGS" + CFLAGS="$CFLAGS $1" + + AC_TRY_COMPILE([ ], [], [flag_ok=yes], [flag_ok=no]) + CFLAGS="$save_CFLAGS" + + if test "X$flag_ok" = Xyes ; then + m4_ifvaln([$2],[$2]) + true + else + m4_ifvaln([$3],[$3]) + true + fi + AC_MSG_RESULT([$flag_ok]) +]) + +dnl AS_COMPILER_FLAGS(VAR, FLAGS) +dnl Tries to compile with the given CFLAGS. + +AC_DEFUN([AS_COMPILER_FLAGS], +[ + list=$2 + flags_supported="" + flags_unsupported="" + AC_MSG_CHECKING([for supported compiler flags]) + for each in $list + do + save_CFLAGS="$CFLAGS" + CFLAGS="$CFLAGS $each" + AC_TRY_COMPILE([ ], [], [flag_ok=yes], [flag_ok=no]) + CFLAGS="$save_CFLAGS" + + if test "X$flag_ok" = Xyes ; then + flags_supported="$flags_supported $each" + else + flags_unsupported="$flags_unsupported $each" + fi + done + AC_MSG_RESULT([$flags_supported]) + if test "X$flags_unsupported" != X ; then + AC_MSG_WARN([unsupported compiler flags: $flags_unsupported]) + fi + $1="$$1 $flags_supported" +]) + |