glibc: enable -fstack-protector=strong.

srcpkgs/glibc/template

@@ -1,7 +1,7 @@
 # Template file for 'glibc'
 pkgname=glibc
 version=2.25
-revision=5
+revision=6
 bootstrap=yes
 short_desc="The GNU C library"
 maintainer="Juan RP <xtraeme@voidlinux.eu>"
@@ -92,7 +92,7 @@ do_configure() {
 		configure_args+=" --with-headers=${XBPS_MASTERDIR}/usr/include"
 	fi
 
-	# Disable SSP
+	# Disable SSP from CFLAGS (enabled below)
 	export CFLAGS="${CFLAGS/-fstack-protector-strong/}"
 	# Disable FORTIFY_SOURCE
 	export CFLAGS="${CFLAGS/-D_FORTIFY_SOURCE=?/}"
@@ -106,6 +106,7 @@ do_configure() {
 		--enable-stack-guard-randomization \
 		--without-selinux --without-cvs --without-gd \
 		--disable-lock-elision \
+		--enable-stack-protector=strong \
 		libc_cv_rootsbindir=/usr/bin \
 		libc_cv_rtlddir=${_libdir} libc_cv_slibdir=${_libdir}
 }