Original patch from gentoo: gentoo/src/patchsets/gcc/4.3.1/uclibc/90_all_303-c99-complex-ugly-hack.patchdiff -durN gcc-4.3.1.orig/libstdc++-v3/configure gcc-4.3.1/libstdc++-v3/configure--- gcc-4.3.1.orig/libstdc++-v3/configure 2008-06-10 14:58:43.000000000 +0200+++ gcc-4.3.1/libstdc++-v3/configure 2008-06-10 14:58:58.000000000 +0200@@ -39006,6 +39006,9 @@ 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 () {