[libvirt] [libvirt-glib][PATCH] Don't redefine _FORTIFY_SOURCE macro

[Michal Privoznik]

If the _FORTIFY_SOURCE has been already defined, we unconditionally
redefine it, leaving us with warning/error thrown at compilation time.
---
 m4/virt-compile-warnings.m4 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/m4/virt-compile-warnings.m4 b/m4/virt-compile-warnings.m4
index 99d214e..d07872a 100644
--- a/m4/virt-compile-warnings.m4
+++ b/m4/virt-compile-warnings.m4
@@ -87,7 +87,7 @@ AC_DEFUN([LIBVIRT_GLIB_COMPILE_WARNINGS],[
     AH_VERBATIM([FORTIFY_SOURCE],
     [/* Enable compile-time and run-time bounds-checking, and some warnings,
         without upsetting newer glibc. */
-     #if defined __OPTIMIZE__ && __OPTIMIZE__
+     #if defined __OPTIMIZE__ && __OPTIMIZE__ && !defined _FORTIFY_SOURCE
      # define _FORTIFY_SOURCE 2
      #endif
     ])
-- 
1.8.0.2