Compiling gcc-4.1.2 on 64-bit Ubuntu machines

[Olumide <50295 at web dot de>]

Hi all,

We are trying to compile the gcc compiler a 64-bit Ubuntu machine -- 
because that is the version of gcc that Autodesk Maya 2011 is built with 
and therefore plugins must be compiled against the same version of gcc.
See: 
http://download.autodesk.com/us/maya/2011help/index.html?url=./files/Setting_up_your_build_environment_Linux_compiler_requirement.htm,topicNumber=d0e677620

Following the instructions in this link we ran

configure --prefix=/opt/gcc412 --program-suffix=412 --enable-shared 
--enable-threads=posix --enable-checking=release --with-system-zlib 
--disable-libunwind-exceptions --enable-__cxa_atexit

followed by

make -j 2 bootstrap

Unfortunately, the process build with the error

/usr/include/gnu/stubs.h:7:27:/usr/include/gnu/stubs.h:7:27:  error: 
error: gnu/stubs-32.h: No such file or directorygnu/stubs-32.h: No such 
file or directory

make[4]: *** [32/crtend.o] Error 1
make[4]: *** Waiting for unfinished jobs....
make[4]: *** [32/crtbegin.o] Error 1
make[4]: Leaving directory `/home/oaina/Downloads/gcc412/gcc-build/gcc'
make[3]: *** [extra32] Error 2
make[3]: Leaving directory `/home/oaina/Downloads/gcc412/gcc-build/gcc'
make[2]: *** [stmp-multilib] Error 2
make[2]: Leaving directory `/home/oaina/Downloads/gcc412/gcc-build/gcc'
make[1]: *** [stage1_build] Error 2
make[1]: Leaving directory `/home/oaina/Downloads/gcc412/gcc-build/gcc'
make: *** [bootstrap] Error 2

We've tried linking the file stubs.h in /usr/include/gnu/ to stubs-32.h 
and tried rebuilding, but this time we get the error message:

/usr/bin/ld: skipping incompatible /usr/lib/../lib/libc.so when 
searching for -lc
/usr/bin/ld: skipping incompatible /usr/lib/../lib/libc.a when searching 
for -lc
/usr/bin/ld: skipping incompatible /usr/lib/libc.so when searching for -lc
/usr/bin/ld: skipping incompatible /usr/lib/libc.a when searching for -lc
/usr/bin/ld: cannot find -lc
collect2: ld returned 1 exit status
make[3]: *** [32/libgcc_s.so] Error 1
make[3]: Leaving directory `/home/oaina/Downloads/gcc412/gcc-build/gcc'
make[2]: *** [stmp-multilib] Error 2
make[2]: Leaving directory `/home/oaina/Downloads/gcc412/gcc-build/gcc'
make[1]: *** [stage1_build] Error 2
make[1]: Leaving directory `/home/oaina/Downloads/gcc412/gcc-build/gcc'
make: *** [bootstrap] Error 2

-----------------------------------------------------------

Update:
We've set the CFAGS environment variable to m64 and tried rebuilding, 
and this time the process went much further but did eventually fail with 
the error message:

/usr/bin/ld: skipping incompatible /usr/lib/../lib/libc.so when 
searching for -lc
/usr/bin/ld: skipping incompatible /usr/lib/../lib/libc.a when searching 
for -lc
/usr/bin/ld: skipping incompatible /usr/lib/libc.so when searching for -lc
/usr/bin/ld: skipping incompatible /usr/lib/libc.a when searching for -lc

Thanks,

- Olumide