dnl as-compiler-flag.m4 0.1.0dnl autostars m4 macro for detection of compiler flagsdnl David Schleef <ds@schleef.org>dnl $Id: as-compiler-flag.m4,v 1.2 2006/02/12 05:26:26 otte 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 $1"  AC_TRY_COMPILE([int main (int argc, char **argv){#if 0], [#endif], [flag_ok=yes], [flag_ok=no])  CFLAGS="$save_CFLAGS"  if test "X$flag_ok" = Xyes ; then    $2    true  else    $3    true  fi  AC_MSG_RESULT([$flag_ok])])