RE: GCC 4.2.1 : bootstrap fails at stage 2. compiler produces wrong binary for wrong processor

["Dennis Clarke" <dclarke at blastwave dot org>]

SUMMARY : the stage 2 compiler produces the wrong binary type for this machine

I did further digging and built my own libiconv and installed that into my
own isolated "local" directory at $HOME/local

then I destroyed my previous stage 1 work and started over again thus :

bash-3.2$ date
Thu Jul 26 21:20:30 EDT 2007
bash-3.2$
bash-3.2$ /export/home/dclarke/build/gcc-4.2.1/configure
--with-as=/usr/ccs/bin/as --without-gnu-ld --with-ld=/usr/ccs/bin/ld
--enable-threads=posix --disable-nls --prefix=/export/home/dclarke/local
--with-local-prefix=/export/home/dclarke/ local --enable-shared
--enable-languages=c,c++,objc,fortran --with-gmp=/export/h ome/dclarke/local
--with-mpfr=/export/home/dclarke/local --enable-bootstrap

eventually I run make and hours later I see the same error as before :

If you meant to cross compile, use `--host'.
See `config.log' for more details.
make[2]: *** [configure-stage2-intl] Error 1
make[2]: Leaving directory `/opt/build/gcc-4.2.1-build'
make[1]: *** [stage2-bubble] Error 2
make[1]: Leaving directory `/opt/build/gcc-4.2.1-build'
make: *** [all] Error 2
bash-3.2$ date
Fri Jul 27 01:02:05 EDT 2007
bash-3.2$ bash-3.2$


so this time I go hunting for that config.log with the non-zero exit status
and find it at ./intl/config.log

http://www.blastwave.org/dclarke/gcc-4.2.1/intl_config_log.txt

the devil is in the details and there we see :

configure:2121:  /opt/build/gcc-4.2.1-build/./prev-gcc/xgcc
-B/opt/build/gcc-4.2.1-build/./prev-gcc/
-B/export/home/dclarke/local/sparc-sun-solaris2.8/bin/ -g -O2
-I/export/home/dclarke/local/include  conftest.c  >&5
configure:2124: $? = 0
configure:2170: result: a.out
configure:2175: checking whether the C compiler works
configure:2181: ./a.out
./a.out: syntax error at line 1: `(' unexpected
configure:2184: $? = 2
configure:2191: error: cannot run C compiled programs.
If you meant to cross compile, use `--host'.
See `config.log' for more details.

that error seems to scream to me that the output binary a.out can not be
executed because it is for the wrong processor target. This should create
output for Sparc V7 ( old old generic ) but the binary must be for sparcv8a
or similar.

In either case I think that the --host needs to be specified as well as
perhaps --with-cpu=foo or something like that in the ./configure line.

Now that I check http://gcc.gnu.org/install/configure.html there is no
--host option to give to configure so .. I am stumped again.

here is the proof of the problem. I run the compile of hello.c and we see
the error :

bash-3.2$ /opt/build/gcc-4.2.1-build/./prev-gcc/xgcc
-B/opt/build/gcc-4.2.1-build/./prev-gcc/
-B/export/home/dclarke/local/sparc-sun-solaris2.8/bin/ -g -O2
-I/export/home/dclarke/local/include -o /tmp/a.out /tmp/hello.c
bash-3.2$ file /tmp/a.out
/tmp/a.out:     ELF 32-bit MSB executable SPARC32PLUS Version 1, V8+
Required, dynamically linked, not stripped

that is the wrong binary for these old Sparc processors.

bash-3.2$ /tmp/a.out
bash: /tmp/a.out: cannot execute binary file

Of course not.

The machine needs a plain old Sparc v7 binary and this will simply not work.

what options do I need to set on the configure line in order for this to
work? I don't see a --host option and I am not certain if setting CFLAGS
will enforce this during a bootstrap.

any help .. would be great now that I identified the symptoms of the problem.

Dennis