--- a/libstdc++-v3/configure
+++ b/libstdc++-v3/configure
@@ -7516,6 +7516,9 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <complex.h>
+#ifdef __UCLIBC__
+#error ugly hack to make sure configure test fails here for cross until uClibc supports the complex funcs
+#endif
 int
 main ()
 {