configure: Undefine _FORTIFY_SOURCE prior using it

Currently, we are enforcing the _FORTIFY_SOURCE=2 without any
previous detection if the macro has been already defined, e.g.
by environment, or is just enabled by compiler by default.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Jan Vesely <jano.vesely@gmail.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
This commit is contained in:
Michal Privoznik 2013-09-05 12:54:49 +02:00 committed by Michael Tokarev
parent 6c2679fc19
commit e600cdf3b4

2
configure vendored
View file

@ -3520,7 +3520,7 @@ 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