Re: building newlib with i386-coff-gcc

[flo <florian dot zimmermann at cse dot de>]

On Freitag, 17. August 2001 00:09 J. Johnston wrote:
> flo wrote:
> > Am Mittwoch, 15. August 2001 23:31 schrieben Sie:
> > > flo wrote:
> > > > hi,
> > > >
> > > > i do not know how to get with my cross-compiled i386-coff
> > > > the newlib working.
> > > >
> > > > first i built binutils:
> > > > # ../binutils/configure --target=$target --prefix=$prefix -v
> > > > # make all install
> > > >
> > > > then gcc-2.95.3:
> > > > # ../gcc/configure --target=$target --prefix=$prefix --with-newlib
> > > > --without-headers -v
> > > > # make install-gcc-cross
> > > >
> > > > # PATH=$PATH:$prefix/bin
> > > > # export CC_FOR_TARGET=/bar/bin/i386-coff-gcc
> > > > # export AS_FOR_TARGET=/bar/bin/i386-coff-as
> > > > # export LD_FOR_TARGET=/bar/bin/i386-coff-ld
> > > > # export AR_FOR_TARGET=/bar/bin/i386-coff-ar
> > > > # export RANLIB_FOR_TARGET=/bar/bin/i386-coff-ranlib
> > > > # ../newlib/configure --target=$target --prefix=$prefix -v
> > > > # make
> > > > ^C
> > > > (Makefile does not use i386-coff-gcc as expected but gcc)
> > > > so i edit in my BUILD directory the Makefile and replaced
> > > > gcc with i386-coff-gcc and as with ...etc.
> > >
> > > It looks like you have failed to use the top-level configure from above
> > > newlib.  For example, when you download the newlib source tree, you
> > > will have a directory called src which has a sub-directory newlib.  You
> > > need to use the src/configure not the src/newlib/configure.  It will do
> > > this for you. The same applies for all of the other components.  If you
> > > have merged your source trees properly, you want to configure once from
> > > the top.  This will configure all of your sub-components like
> > > gcc/binutils/newlib.  When you do this, gcc and newlib will figure out
> > > what to do automatically and you don't have to specify --with-newlib or
> > > what tools to use when building newlib.
> > >
> > > -- Jeff J.
> >
> > hmm ok checked out and it seems to work, but now it doesn't build a
> > crt0.o
> >
> > i crawled the configures and Makefiles in the sub-directories and it
> > looks like this is the failure:
> > # ../newlib/configure --target=$target --prefix=$prefix -v
> > # make all | tee loggy
> > # more loggy
> > [snip]
> >
> > i386-coff-ar cru lib.a locale.o
> > i386-coff-ranlib lib.a
> > make[3]: Leaving directory
> > `/download/build_newlib/i386-coff/newlib/libc/locale'
> > Making all in sys
> > make[3]: Entering directory
> > `/download/build_newlib/i386-coff/newlib/libc/sys' Making all in .
> > make[4]: Entering directory
> > `/download/build_newlib/i386-coff/newlib/libc/sys' make[4]: Nothing to be
> > done for `all-am'.
> > make[4]: Leaving directory
> > `/download/build_newlib/i386-coff/newlib/libc/sys' make[3]: Leaving
> > directory `/download/build_newlib/i386-coff/newlib/libc/sys' Making all
> > in reent
> >
> > [snap]
> >
> > the 'configuring in sys' showed no warnings or errors.
> > a quick look at the Makefile shows:
> >
> > all-am: Makefile $(LIBRARIES) $(DATA)
> > where $(LIBRARIES) = $(SYSLIB) and $(SYSLIB) is:
> >
> > #SYSLIB = \
> > #lib.a
> >
> > $(DATA) in turn is defined as $(noinst_DATA) and $(noinst_DATA) is
> > $(CRT0) and $(CRT0) is empty definition...
> >
> > do i have the proper tree? i downloaded
> > ftp://sources.redhat.com/pub/newlib/newlib-1.9.0.tar.gz
>
> Flo,
>
>   A crto is not provided for you for i386-coff.  You will have to determine
> what is needed on your board with regards to DRAM set up, interrupt
> setup, stack initialization, memory initialization (e.g. the bss area) and
> create your own.
>
>   Note that there is a Cygmon crto provided in the libgloss/i386 directory
> which will give you a base to use when building your own.  It is designed
> for the Cygmon monitor but you can use most of it.  You might also ask on
> this forum if anyone already has one appropriate for your particular board.
>
> -- Jeff J.

uuhm... i really am a newbie with libc and compiler things...
i just wanted to have a gcc that is able to build i386 sysv coff executables.
so i read in the crossgcc faq and built binutils, gcc stage 1 but am stuck
now with newlib..
or is the way you described the only one to build such a compiler?

thx again,
flo

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