Compiling gcc-2.95.2 for use as m68k cross compiler

[Noah Aklilu]

It is missing the c library header files.  If you have prebuilt
libraries and headers, then you can use 
--with-headers=<pathtoheaders> and --with-libs=<pathtolibs> with
configure.

Otherwise you can use newlib.  Linking the newlib
directory into your gcc source directory means you don't have to use 
--with-headers option with configure e.g.

So in your <pathtogccsource>/gcc-2.9.5/

"ln -s <pathtonewlibsource>/newlib-1.8.1/newlib newlib"

Of course if you are using a newer version of newlib sub that
in.

I like to add "--with-gnu-ld --with-gnu-as --with-newlib" to 
the configure options to make things go a little smoother if
you are using newlib (which you build after gcc) and binutils.


Noah

On 1 Mar 2001, at 16:07, Mark Palmerino wrote:

> Hi all,
> 
> I am taking Kai's gentle suggestions to consider using gcc-2.95.2 as the
> base for building a cross-compiler with the target of m68k-coff.  I am in
> that process now.
> 
> I have run into a problem that I'm hoping someone might suggest a solution
> for. Here is the output during the make where it stops. It seems that there
> is a "configure error" when checking whether the C compiler works. The funny
> thing though is that I think it was working in the make before this point.
> Also, if I execute the following from the unix prompt:
> 
> /h/crossgcc/build-gcc295/gcc/xgcc -B/h/crossgcc/build-gcc95/gcc/
> -B/usr/local/m68k-coff/bin/ -g -O2
> 
> I get:
> 
> xgcc: No input files
> 
> If I add a -v to the above command, I get:
> 
> Using builtin specs.
> gcc version 2.95.2 19991024 (release)
> 
> So it seems to me it is working.
> 
> Any ideas of what to do?
> 
> Thanks
> 
> -------- clip ------
> 
> Configuring in m68k-coff/libiberty
> loading cache ./config.cache
> checking host system type... m68k-unknown-coff
> checking build system type... powerpc-apple-machten5
> checking for m68k-coff-ar... m68k-coff-ar
> checking for m68k-coff-ranlib... m68k-coff-ranlib
> checking for gcc... /h/crossgcc/build-gcc295/gcc/xgcc
> -B/h/crossgcc/build-gcc295/gcc/ -B/us
> r/local/m68k-coff/bin/
> checking whether we are using GNU C... yes
> checking whether /h/crossgcc/build-gcc295/gcc/xgcc
> -B/h/crossgcc/build-gcc295/gcc/ -B/usr/
> ocal/m68k-coff/bin/ accepts -g... yes
> checking for POSIXized ISC... no
> checking for a BSD compatible install... /usr/bin/install -c
> xhost-mkfrag is unchanged
> checking how to run the C preprocessor... /h/crossgcc/build-gcc295/gcc/xgcc
> -B/h/crossgcc/
> uild-gcc295/gcc/ -B/usr/local/m68k-coff/bin/ -E
> checking for sys/file.h... no
> checking for sys/param.h... no
> checking for stdlib.h... no
> checking for string.h... no
> checking for unistd.h... no
> checking for strings.h... no
> checking for sys/time.h... no
> checking for sys/resource.h... no
> checking for sys/wait.h that is POSIX.1 compatible... no
> checking whether the C compiler (/h/crossgcc/build-gcc295/gcc/xgcc
> -B/h/crossgcc/build-gcc
> 95/gcc/ -B/usr/local/m68k-coff/bin/ -g -O2 ) works... no
> configure: error: installation or configuration problem: C compiler cannot
> create executab
> es.
> make[1]: Entering directory `/h/crossgcc/build-gcc295/m68k-coff/libio'
> rootme=`pwd`/ ; export rootme; \
> CC="/h/crossgcc/build-gcc295/gcc/xgcc -B/h/crossgcc/build-gcc295/gcc/
> -B/usr/local/m68k-co
> f/bin/ -I. -I../../../gcc-2.95.2/libio"; export CC; \
> CXX="/h/crossgcc/build-gcc295/gcc/xgcc -B/h/crossgcc/build-gcc295/gcc/
> -B/usr/local/m68k-c
> ff/bin/ -I. -I../../../gcc-2.95.2/libio -nostdinc++ -nostdinc++ -g -O2";
> export CXX; \
> CONFIG_NM="m68k-coff-nm"; export CONFIG_NM; \
> /bin/sh ../../../gcc-2.95.2/libio/gen-params LIB_VERSION=2.8.0
> >tmp-params.h
> dummy.c:1: sys/types.h: No such file or directory
> dummy.c:8: stdio.h: No such file or directory
> dummy.c:9: time.h: No such file or directory
> dummy.c:10: signal.h: No such file or directory
> gen-params: could not invoke /h/crossgcc/build-gcc295/gcc/xgcc
> -B/h/crossgcc/build-gcc295/
> cc/ -B/usr/local/m68k-coff/bin/ -I. -I../../../gcc-2.95.2/libio -E on
> dummy.c
> make[1]: *** [_G_config.h] Error 1
> make[1]: Leaving directory `/h/crossgcc/build-gcc295/m68k-coff/libio'
> make: *** [all-target-libio] Error 2
> 
> 
> 
> 
> 
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------------------------------------------
Noah Aklilu
http://www.ee.ualberta.ca/~aklilu/
naklilu@ualberta.ca

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