On 20081011, Khem RAJ writes:
You have to bar gcc trying to build unwinding at stage 1.

/trunk/patches/gcc/4.2.0/290-sh-without-headers.patch | 26 26 0 0 ++++++++++++++++++++++++++
/trunk/patches/gcc/4.2.1/290-sh-without-headers.patch | 26 26 0 0 ++++++++++++++++++++++++++
/trunk/patches/gcc/4.2.2/290-sh-without-headers.patch | 26 26 0 0 ++++++++++++++++++++++++++
/trunk/patches/gcc/4.3.1/350-sh-without-headers.patch | 26 26 0 0 ++++++++++++++++++++++++++
/trunk/patches/gcc/4.2.3/310-sh-without-headers.patch | 26 26 0 0 ++++++++++++++++++++++++++
/trunk/patches/gcc/4.3.2/350-sh-without-headers.patch | 26 26 0 0 ++++++++++++++++++++++++++
/trunk/patches/gcc/4.2.4/310-sh-without-headers.patch | 26 26 0 0 ++++++++++++++++++++++++++
7 files changed, 182 insertions(+)

--- 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 <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 ()

 {