Origin: http://www.linuxfromscratch.org/patches/downloads/gcc/gcc-4.0.2-pure64-1.patch

diff -Naur gcc-4.0.1.orig/gcc/config/i386/linux64.h gcc-4.0.1/gcc/config/i386/linux64.h
--- gcc-4.0.1.orig/gcc/config/i386/linux64.h	2004-11-27 22:29:34.000000000 +0000
+++ gcc-4.0.1/gcc/config/i386/linux64.h	2005-08-28 05:07:59.000000000 +0000
@@ -60,8 +60,8 @@
   %{!shared: \
     %{!static: \
       %{rdynamic:-export-dynamic} \
-      %{m32:%{!dynamic-linker:-dynamic-linker /lib/ld-linux.so.2}} \
-      %{!m32:%{!dynamic-linker:-dynamic-linker /lib64/ld-linux-x86-64.so.2}}} \
+      %{m32:%{!dynamic-linker:-dynamic-linker /lib32/ld-linux.so.2}} \
+      %{!m32:%{!dynamic-linker:-dynamic-linker /lib/ld-linux-x86-64.so.2}}} \
     %{static:-static}}"
 
 #define MULTILIB_DEFAULTS { "m64" }