From be027f7002d11677cf32601acd1370c45f2d2c57 Mon Sep 17 00:00:00 2001 From: Guillaume Desmottes Date: Mon, 25 May 2009 12:14:34 +0100 Subject: add m4/as-compiler-flag.m4 --- m4/as-compiler-flag.m4 | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 m4/as-compiler-flag.m4 (limited to 'm4') 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 + +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]) +]) + -- cgit v1.2.3