Description of problem:
On FC3/x86-64 I can not compile anything (c, c++). I have installed
all compilers as well as the compatibility-libs/devel-packages, which
I think means, that I now have a biarch-compiler-environment. The
default should be 64bit-compiling since this is the primary architecture.

How reproducible:
Fails always.

Steps to Reproduce:
1. This small programm:
----
int main() {
  printf("hallo welt\n");
  return 0;
}
----
fails with
----
/usr/bin/ld: warning: i386 architecture of input file
`/usr/lib/gcc/x86_64-redhat-linux/3.4.2/../../../crt1.o' is
incompatible with i386:x86-64 output
/usr/bin/ld: warning: i386 architecture of input file
`/usr/lib/gcc/x86_64-redhat-linux/3.4.2/../../../crti.o' is
incompatible with i386:x86-64 output
/usr/bin/ld: warning: i386 architecture of input file
`/usr/lib/gcc/x86_64-redhat-linux/3.4.2/../../../crtn.o' is
incompatible with i386:x86-64 output
/usr/lib/gcc/x86_64-redhat-linux/3.4.2/../../../crt1.o(.text+0xc): In
function `_start':
: undefined reference to `__libc_csu_fini'
/usr/lib/gcc/x86_64-redhat-linux/3.4.2/../../../crt1.o(.text+0x11): In
function `_start':
: undefined reference to `__libc_csu_init'
collect2: ld returned 1 exit status
----

Every other programm I tried fails the same way.