arrgh. can't install headers in glibc-2.3.2.

[Dan Kegel]

Peter Barada wrote:
>>>If I comment out the two sets of lines in the generated gcc/Makefile
>>>that define LIBGCC and INSTALL_LIBGCC (arond lines 383 and 688) then
>>>libgcc is *not* build and the bootstrap installs correctly...
> 
> I tried it, and it installed a bare bootstrap compiler that
> glibc-2.3.2 was happy to configure with and started building glibc.
> Unfortunately it croaked in sscanf.c (complaining about a va_start in
> a function that has constant parameters), probably because the
> configure was wrong. 

Hah.  That's a known problem.  I've squirreled away the workaround at
http://www.kegel.com/crossgcc/crosstool-0.2/glibc-2.3.2-patches/sscanf.patch

> What do you use for the config of glibc? (which of --target, --host,
> --build, etc).  I'd be glad to try the experiment with the config you
> use....

My complete (and I do mean complete) build script is at
http://www.kegel.com/crossgcc/
The command I've been running to compile is
   eval `cat ppc-750.dat` `cat gcc3.3-glibc2.3.2.dat`    sh all.sh
I think this contains a good workaround for the current
glibc-2.3.2 header install problem:

     if grep -q GLIBC_2.3 ${GLIBC_DIR}/ChangeLog; then
         # glibc-2.3.x passes cross options to $(CC) when generating errlist-compat.c, which fails without a real cross-compiler.
         # Fortunately, we don't need errlist-compat.c, since we just need .h files,
         # so work around this by creating a fake errlist-compat.c and satisfying its dependencies.
         # Another workaround might be to tell configure to not use any cross options to $(CC).
         # The real fix would be to get install-headers to not generate errlist-compat.c.
         make sysdeps/gnu/errlist.c
         touch stdio-common/errlist-compat.c
     fi
     make cross-compiling=yes install_root=${PREFIX}/${TARGET} prefix="" install-headers

but who knows, maybe it's rotted since I tried it last :-)

I encourage you to try your workaround instead of mine -- and then
maybe submit a gcc patch that adds a --no-libgcc option to configure,
or something like that.  It'd be really nice to not need the headers
when building the bootstrap compiler.
- Dan

-- 
Dan Kegel
http://www.kegel.com
http://counter.li.org/cgi-bin/runscript/display-person.cgi?user=78045


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