diff --git a/dev-lang/tcc/tcc-0.9.27.ebuild b/dev-lang/tcc/tcc-0.9.27.ebuild
index 7090fdeb01d..c9341291912 100644
--- a/dev-lang/tcc/tcc-0.9.27.ebuild
+++ b/dev-lang/tcc/tcc-0.9.27.ebuild
@@ -37,10 +37,16 @@ src_prepare() {
 }
 
 src_configure() {
+	local libc
+
 	use test && unset CFLAGS LDFLAGS # Tests run with CC=tcc etc, they will fail hard otherwise
 					# better fixes welcome, it feels wrong to hack the env like this
+	use elibc_musl && libc=musl
+	use elibc_uclibc && libc=uClibc
+
 	# not autotools, so call configure directly
 	./configure --cc="$(tc-getCC)" \
+		${libc:+--config-${libc}} \
 		--prefix="${EPREFIX}/usr" \
 		--libdir="${EPREFIX}/usr/$(get_libdir)" \
 		--docdir="${EPREFIX}/usr/share/doc/${PF}"
diff --git a/dev-lang/tcc/tcc-9999.ebuild b/dev-lang/tcc/tcc-9999.ebuild
index 4c61d36c943..bf5636b0c35 100644
--- a/dev-lang/tcc/tcc-9999.ebuild
+++ b/dev-lang/tcc/tcc-9999.ebuild
@@ -46,10 +46,16 @@ src_prepare() {
 }
 
 src_configure() {
+	local libc
+
 	use test && unset CFLAGS LDFLAGS # Tests run with CC=tcc etc, they will fail hard otherwise
 					# better fixes welcome, it feels wrong to hack the env like this
+	use elibc_musl && libc=musl
+	use elibc_uclibc && libc=uClibc
+
 	# not autotools, so call configure directly
 	./configure --cc="$(tc-getCC)" \
+		${libc:+--config-${libc}} \
 		--prefix="${EPREFIX}/usr" \
 		--libdir="${EPREFIX}/usr/$(get_libdir)" \
 		--docdir="${EPREFIX}/usr/share/doc/${PF}"