From: http://buildroot.uclibc.org/cgi-bin/viewcvs.cgi/*checkout*/trunk/buildroot/toolchain/gcc/4.0.2/303-c99-complex-ugly-hack.patch?rev=11715 --- gcc-4.0.0/libstdc++-v3/configure-old 2005-04-30 22:04:48.061603912 -0500 +++ gcc-4.0.0/libstdc++-v3/configure 2005-04-30 22:06:13.678588152 -0500 @@ -7194,6 +7194,9 @@ cat >>conftest.$ac_ext <<_ACEOF /* end confdefs.h. */ #include +#ifdef __UCLIBC__ +#error ugly hack to make sure configure test fails here for cross until uClibc supports the complex funcs +#endif int main () {