[vlc-devel] [PATCH] build: Undef _FORTIFY_SOURCE before setting it

[Luca Barbato]

It is commonly present as part of the compiler defaults in some
distributions.
---

I forgot to send it since looong ago...

 configure.ac | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index 3f6ab28..8da9722 100644
--- a/configure.ac
+++ b/configure.ac
@@ -54,7 +54,13 @@ dnl Check for tools
 dnl
 AC_PROG_CC_C99
 AC_USE_SYSTEM_EXTENSIONS
-AC_DEFINE([_FORTIFY_SOURCE], 2, [Define to 2 to get glibc warnings.])
+AH_VERBATIM([_FORTIFY_SOURCE],[
+#ifdef _FORTIFY_SOURCE
+#/**/undef/**/ _FORTIFY_SOURCE
+#define _FORTIFY_SOURCE 2
+#endif
+])
+dnl AC_DEFINE([_FORTIFY_SOURCE], 2, [Define to 2 to get glibc warnings.])
 AC_DEFINE([_FILE_OFFSET_BITS], 64, [Define to 64 for large files support.])
 AC_DEFINE([_REENTRANT],, [Define to expose reentrant functions.])
 AC_DEFINE([_THREAD_SAFE],, [Same as _REENTANT for some other OSes.])
--
1.8.3.2