diff --git a/srcpkgs/gcc/template b/srcpkgs/gcc/template
index 05ea9bed2f9..1e926d51c65 100644
--- a/srcpkgs/gcc/template
+++ b/srcpkgs/gcc/template
@@ -4,7 +4,7 @@ _gcjrel=17
 
 pkgname=gcc
 version=${_majorver}.0
-revision=4
+revision=5
 short_desc="The GNU C Compiler"
 maintainer="Juan RP <xtraeme@voidlinux.eu>"
 homepage="http://gcc.gnu.org"
@@ -159,6 +159,7 @@ do_configure() {
 
 	export CFLAGS="${CFLAGS/-D_FORTIFY_SOURCE=2/}"
 	export CXXFLAGS="${CXXFLAGS/-D_FORTIFY_SOURCE=2/}"
+	export glibcxx_cv_c99_math_cxx98=yes glibcxx_cv_c99_math_cxx11=yes
 
 	_args+=" --prefix=/usr"
 	_args+=" --mandir=/usr/share/man"
@@ -190,6 +191,7 @@ do_configure() {
 	CONFIG_SHELL=/bin/bash ${wrksrc}/configure ${_args}
 }
 do_build() {
+	export glibcxx_cv_c99_math_cxx98=yes glibcxx_cv_c99_math_cxx11=yes
 	if [ -z "$CHROOT_READY" ]; then
 		export LD_LIBRARY_PATH="${XBPS_MASTERDIR}/usr/lib"
 	fi