From 6f4d2c8afbde16fdaf06cb3b3701041c8edbb35a Mon Sep 17 00:00:00 2001 From: Dunrong Huang Date: Sat, 7 Sep 2013 03:57:59 +0800 Subject: [PATCH] Fix _FORTIFY_SOURCE redefine error If the _FORTIFY_SOURCE has been already defined, we shouldn't redefine it, or it will raise a build error as below: In file included from agent-msg-filter.c:21:0: ../config.h:17:0: error: "_FORTIFY_SOURCE" redefined [-Werror] agent-msg-filter.c:1:0: note: this is the location of the previous definition Suggested-by: Christophe Fergeau Signed-off-by: Dunrong Huang --- m4/spice-compile-warnings.m4 | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/m4/spice-compile-warnings.m4 b/m4/spice-compile-warnings.m4 index 959971a2..31f2a9c3 100644 --- a/m4/spice-compile-warnings.m4 +++ b/m4/spice-compile-warnings.m4 @@ -113,7 +113,7 @@ AC_DEFUN([SPICE_COMPILE_WARNINGS],[ # Use improved glibc headers AH_VERBATIM([FORTIFY_SOURCE], [/* Enable compile-time and run-time bounds-checking, and some warnings. */ -#if __OPTIMIZE__ +#if !defined _FORTIFY_SOURCE && defined __OPTIMIZE__ && __OPTIMIZE__ # define _FORTIFY_SOURCE 2 #endif ])