diff --git a/app-misc/corectrl/corectrl-1.4.3.ebuild b/app-misc/corectrl/corectrl-1.4.3.ebuild
index db01a0cc17..97b0bd6b2b 100644
--- a/app-misc/corectrl/corectrl-1.4.3.ebuild
+++ b/app-misc/corectrl/corectrl-1.4.3.ebuild
@@ -3,7 +3,7 @@
 
 EAPI=8
 
-inherit ecm linux-info optfeature
+inherit ecm linux-info optfeature toolchain-funcs
 
 DESCRIPTION="Core control application"
 HOMEPAGE="https://gitlab.com/corectrl/corectrl"
@@ -55,7 +55,7 @@ RDEPEND="${COMMON_DEPEND}
 CONFIG_CHECK="~CONNECTOR ~PROC_EVENTS ~NETLINK_DIAG"
 
 src_prepare() {
-	(clang++ --version 2>&1 | grep -q "libcxx") && eapply "${FILESDIR}/1.4.3-remove_libstdcxxfs_dependency.patch"
+	! tc-is-gcc && (clang++ --version 2>&1 | grep -q "libcxx") && eapply "${FILESDIR}/1.4.3-remove_libstdcxxfs_dependency.patch"
 	cmake_src_prepare
 }
 
diff --git a/app-misc/corectrl/corectrl-9999.ebuild b/app-misc/corectrl/corectrl-9999.ebuild
index 0c12da8513..93c9918ba2 100644
--- a/app-misc/corectrl/corectrl-9999.ebuild
+++ b/app-misc/corectrl/corectrl-9999.ebuild
@@ -3,7 +3,7 @@
 
 EAPI=8
 
-inherit ecm linux-info optfeature
+inherit ecm linux-info optfeature toolchain-funcs
 
 DESCRIPTION="Core control application"
 HOMEPAGE="https://gitlab.com/corectrl/corectrl"
@@ -52,7 +52,7 @@ RDEPEND="${COMMON_DEPEND}
 CONFIG_CHECK="~CONNECTOR ~PROC_EVENTS ~NETLINK_DIAG"
 
 src_prepare() {
-	(clang++ --version 2>&1 | grep -q "libcxx") && eapply "${FILESDIR}/9999-remove_libstdcxxfs_dependency.patch"
+	! tc-is-gcc && (clang++ --version 2>&1 | grep -q "libcxx") && eapply "${FILESDIR}/9999-remove_libstdcxxfs_dependency.patch"
 	cmake_src_prepare
 }