--- /Library/Gentoo/usr/portage/x11-libs/cairo/cairo-1.14.6.ebuild	2016-07-06 06:26:19.000000000 -0300
+++ cairo-1.14.6.ebuild	2016-12-06 15:03:37.000000000 -0200
@@ -89,6 +89,11 @@
 	fi
 
 	eautoreconf
+
+	# avoid bad configure tests on macOS, bug #579190
+	if [[ ${CHOST} == *-darwin* ]]; then
+		sed -i -e 's:test "x$cairo_cc_stderr" != "x":false:' configure || die
+	fi
 }
 
 multilib_src_configure() {