On 20090131.1659+0100, Vincent Sanders <vince@kyllikki.org> wrote:
[This]patch is a bit more involved. The patch addresses a gcc
regression in the 4.3 series (specifically this patch is against 4.3.2
which does *not* have a lot of other issues which affect kernel building)

GCC bug tracker has this issue as
#38453 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38453
#32044 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32044

comment 65 of #32044 has the fix being applied to gcc trunk as revision #142719

The attached patch is a backport to gcc 4.3.2 which allows this
version to be used to generate correct output for various ARM kernel
build (and indeed is teh correct answer in general).

/trunk/patches/gcc/4.3.2/360-fix-expensive-optimize.patch | 207 207 0 0 +++++++++++++++++++++
1 file changed, 207 insertions(+)

 Original patch from: ../4.3.2/280-c99-complex-ugly-hack.patch

 -= BEGIN original header =-

 Original patch from gentoo: gentoo/src/patchsets/gcc/4.3.1/uclibc/90_all_303-c99-complex-ugly-hack.patch

 -= END original header =-

 diff -durN gcc-4.3.3.orig/libstdc++-v3/configure gcc-4.3.3/libstdc++-v3/configure

 --- gcc-4.3.3.orig/libstdc++-v3/configure	2008-07-07 21:49:54.000000000 +0200

 +++ gcc-4.3.3/libstdc++-v3/configure	2009-01-27 22:25:39.000000000 +0100

 @@ -38935,6 +38935,9 @@

  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 ()

  {