This small patch allows GCC 3.4.0 to build on AIX 4.2.1.  The GCC folks
don't want to fix it (not that I blame them, AIX 4.2.1 reached the end
of its service life in mid-2000).

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15226

Apply this patch, the bos.rte.bind_cmds.4.2.1.11 fileset (available at
ftp://service.boulder.ibm.com/aix/fixes/v4/os/) and build with:

../gcc-3.4.0/configure --with-as=/usr/bin/as --with-ld=/usr/bin/ld \
	--enable-languages=c
make LDFLAGS=-Wl,-bbigtoc BOOT_LDFLAGS=-Wl,-bbigtoc bootstrap

--- gcc-3.4.0/gcc/collect2.c.orig	2004-04-30 21:05:54.727042000 +1000
+++ gcc-3.4.0/gcc/collect2.c	2004-04-30 21:06:48.534416000 +1000
@@ -35,6 +35,9 @@
 #  define SIGCHLD SIGCLD
 #endif
 
+#include <filehdr.h>
+#include <syms.h>
+
 #ifdef vfork /* Autoconf may define this to fork for us.  */
 # define VFORK_STRING "fork"
 #else