1 files changed, 1 insertions, 1 deletions

diff --git a/configure b/configure
index 5ca8165..c030856 100755
--- a/configure
+++ b/configure
@@ -119,7 +119,7 @@ tryldflag () {
 
 CC_AUTO="$CC"
 CFLAGS_AUTO="$CFLAGS"
-CPPFLAGS_AUTO="-D_POSIX_C_SOURCE=200809L -D_XOPEN_SOURCE=600 $CPPFLAGS"
+CPPFLAGS_AUTO="-D_POSIX_C_SOURCE=200809L -D_XOPEN_SOURCE=700 -O2 $CPPFLAGS"
 LDFLAGS_AUTO="$LDFLAGS"
 LDFLAGS_NOSHARED=
 prefix=