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-rw-r--r--vorbis/m4/add_cflags.m415
1 files changed, 15 insertions, 0 deletions
diff --git a/vorbis/m4/add_cflags.m4 b/vorbis/m4/add_cflags.m4
new file mode 100644
index 0000000..eeb6efd
--- /dev/null
+++ b/vorbis/m4/add_cflags.m4
@@ -0,0 +1,15 @@
+dnl @synopsis AC_ADD_CFLAGS
+dnl
+dnl Add the given option to CFLAGS, if it doesn't break the compiler
+
+AC_DEFUN([AC_ADD_CFLAGS],
+[AC_MSG_CHECKING([if $CC accepts $1])
+ ac_add_cflags__old_cflags="$CFLAGS"
+ CFLAGS="$CFLAGS $1"
+ AC_TRY_LINK([#include <stdio.h>],
+ [puts("Hello, World!"); return 0;],
+ AC_MSG_RESULT([yes]),
+ AC_MSG_RESULT([no])
+ CFLAGS="$ac_add_cflags__old_cflags")
+ ])
+])# AC_ADD_CFLAGS