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authorGuillaume Desmottes <guillaume.desmottes@collabora.co.uk>2009-05-25 19:14:34 +0800
committerGuillaume Desmottes <guillaume.desmottes@collabora.co.uk>2009-10-23 19:03:34 +0800
commitbe027f7002d11677cf32601acd1370c45f2d2c57 (patch)
tree18359884256c970e7bbc45c812cbb9637292c5ec /m4
parent601e416af2bafa2b890b045139c9d50ed5aa9c65 (diff)
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add m4/as-compiler-flag.m4
Diffstat (limited to 'm4')
-rw-r--r--m4/as-compiler-flag.m433
1 files changed, 33 insertions, 0 deletions
diff --git a/m4/as-compiler-flag.m4 b/m4/as-compiler-flag.m4
new file mode 100644
index 000000000..605708a5a
--- /dev/null
+++ b/m4/as-compiler-flag.m4
@@ -0,0 +1,33 @@
+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 2005/06/18 18:02:46 burgerman 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
+ $2
+ true
+ else
+ $3
+ true
+ fi
+ AC_MSG_RESULT([$flag_ok])
+])
+