Missing symbol for zero build on bsd port repo using Fedora

[Andrew Haley]

Matthias Klose wrote:
> It looks like this patch overrides any other -march setting. Wouldn't it better
> to detect this in the configure?

Yes, this is problematic.  It seems that the configury sets INSTALL_ARCH_DIR
and then ZERO_LIBARCH to i386 for any 32-bit x86 target:

    i?86-*-*)
      BUILD_ARCH_DIR=i586
      INSTALL_ARCH_DIR=i386
      JRE_ARCH_DIR=i386

...

  if test "x${use_zero}" = xyes; then
    ZERO_LIBARCH="${INSTALL_ARCH_DIR}"

Thus patch effectively downgrades the compiler from i586.

We should be building for the actual machine we're configuring for.  I think
we need to pass the actual arch name down to CFLAGS.

> afaiu linux distributions have either the
> compiler default to i486 or higher, or propagate this in build flags.

Not all of them.

Andrew.