[Qemu-trivial] [PATCH] configure: Undef _FORTIFY_SOURCE before redefining it

[Ján Veselý]

This patch fixes the following  warning/error with compilers that
define _FORTIFY_SOURE by default:
<command-line>:0:0: error: "_FORTIFY_SOURCE" redefined [-Werror]
stubs/dump.c:1:0: note: this is the location of the previous definition

Signed-off-by: Jan Vesely <address@hidden>
---
 configure | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/configure b/configure
index e989609..24e5b00 100755
--- a/configure
+++ b/configure
@@ -3419,7 +3419,7 @@ if test "$gcov" = "yes" ; then
   CFLAGS="-fprofile-arcs -ftest-coverage -g $CFLAGS"
   LDFLAGS="-fprofile-arcs -ftest-coverage $LDFLAGS"
 elif test "$debug" = "no" ; then
-  CFLAGS="-O2 -D_FORTIFY_SOURCE=2 $CFLAGS"
+  CFLAGS="-O2 -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 $CFLAGS"
 fi


-- 
1.8.1.5