leo_sobral@2: dnl as-compiler-flag.m4 0.1.0
leo_sobral@2: 
leo_sobral@2: dnl autostars m4 macro for detection of compiler flags
leo_sobral@2: 
leo_sobral@2: dnl David Schleef <ds@schleef.org>
leo_sobral@2: 
leo_sobral@2: dnl $Id: as-compiler-flag.m4,v 1.1.1.1 2005/08/26 00:42:44 andrunko Exp $
leo_sobral@2: 
leo_sobral@2: dnl AS_COMPILER_FLAG(CFLAGS, ACTION-IF-ACCEPTED, [ACTION-IF-NOT-ACCEPTED])
leo_sobral@2: dnl Tries to compile with the given CFLAGS.
leo_sobral@2: dnl Runs ACTION-IF-ACCEPTED if the compiler can compile with the flags,
leo_sobral@2: dnl and ACTION-IF-NOT-ACCEPTED otherwise.
leo_sobral@2: 
leo_sobral@2: AC_DEFUN([AS_COMPILER_FLAG],
leo_sobral@2: [
leo_sobral@2:   AC_MSG_CHECKING([to see if compiler understands $1])
leo_sobral@2: 
leo_sobral@2:   save_CFLAGS="$CFLAGS"
leo_sobral@2:   CFLAGS="$CFLAGS $1"
leo_sobral@2: 
leo_sobral@2:   AC_TRY_COMPILE([ ], [], [flag_ok=yes], [flag_ok=no])
leo_sobral@2:   CFLAGS="$save_CFLAGS"
leo_sobral@2: 
leo_sobral@2:   if test "X$flag_ok" = Xyes ; then
leo_sobral@2:     $2
leo_sobral@2:     true
leo_sobral@2:   else
leo_sobral@2:     $3
leo_sobral@2:     true
leo_sobral@2:   fi
leo_sobral@2:   AC_MSG_RESULT([$flag_ok])
leo_sobral@2: ])
leo_sobral@2: