Re: building a cross compiler for linux

["Domen Vrankar" <domen dot vrankar at gmail dot com>]

2006/12/12, Vin Shelton <vshelton@aoainc.com>:
> Hi Domen,
>
> Domen Vrankar wrote:
> > I'm using this tutorila: http://x.cygwin.com/docs/cg/prog-build-cross.html
> > for building a cygwin cross compiler for linux.
> >
> > I built binutils sucessfully but when trying to build gcc I get:
> >
> > configure: error: cannot run C compiled programs.
> > If you meant to cross compile, use `--host'.
> > See `config.log' for more details.
> >
> > This happens even though I use --host=i686-pc-linux.
> >
> > Has annyone an idea why this is happening?
> >
> > I'm using Debian etch, server with two 32 bit pentium processors
> >
>
> I would strongly recommend the use of crosstool for this.  See
> http://www.kegel.com/crosstool/ for details.
>
> Here is some advice from
> http://www.kegel.com/crosstool/crosstool-0.42/doc/crosstool-howto.html:
>
> Crosstool, and probably gcc and glibc's configure scripts, assume that
> directory names do not contain any spaces. This is often violated on
> Windows. Please take care to not use directory names with spaces in them
> when running crosstool. It might work, but if it doesn't, you've been
> warned. (Same goes for Mac OS X.)
>
> crosstool creates some really deeply nested directories while building, so
> filenames are quite long. This has two consequences:
>
> First, on some versions of Windows, filenames (including directory) can't be
> longer than 240 chars. To avoid exceeding this limit, don't run crosstool in
> a directory with a long name.
>
> Second, the maximum length of commandlines is extremely short. Since
> crosstool uses commandlines that include multiple filenames, they can exceed
> the limit very quickly. You can avoid this problem by using the "mount"
> command's options. e.g. mount /bin and /usr/bin with -X or "-o cygexec" (see
> the cygwin faq, and/or mount the crosstool directory with "-o managed" (see
> the cygwin doc for "mount").
>
>
> It's easy to run afoul of either of these two.
>
> HTH,
>    Vin Shelton


I think I wrote what I want to do the wrong way.

I want to build a cross compiler on linux that would output Cygwin
executables ( Linux host -> Cygwin target).

I tryed crosstool and while building on linux with script
demo-cygwin.sh  I get:

i686-pc-cygwin-ranlib libmingwex.a
make[3]: Leaving directory
`/storage/domenv/crosstool/crosstool-0.42/build/i686-pc-cygwin/gcc-3.3.2-/build-cygwin/i686-pc-cygwin/winsup/mingw/mingwex'
i686-pc-cygwin-dlltool --as i686-pc-cygwin-as --output-def
mingwthrd.def mthr.o mthr_init.o
i686-pc-cygwin-gcc -Wl,--base-file=mingwthrd.base -B./ -mdll
-mno-cygwin -Wl,--image-base,0x6FBC0000
-Wl,--entry,_DllMainCRTStartup@12 mthr.o mthr_init.o -Lmingwex \
       -o mingwthrd_dummy.exe
/storage/domenv/crosstool-cygwin/gcc-3.3.2-/i686-pc-cygwin/lib/gcc-lib/i686-pc-cygwin/3.3.2/../../../../i686-pc-cygwin/bin/ld:
cannot find -luser32
collect2: ld returned 1 exit status
make[2]: *** [mingwthrd.def] Error 1
make[2]: Leaving directory
`/storage/domenv/crosstool/crosstool-0.42/build/i686-pc-cygwin/gcc-3.3.2-/build-cygwin/i686-pc-cygwin/winsup/mingw'
make[1]: *** [mingw] Error 1
make[1]: Leaving directory
`/storage/domenv/crosstool/crosstool-0.42/build/i686-pc-cygwin/gcc-3.3.2-/build-cygwin/i686-pc-cygwin/winsup'
make: *** [all-target-winsup] Error 2


I downloaded w32api-3.8-1-src.tar.bz2 package but now I don't know
what to do with it.

Anny suggestions?

r. Domen

--
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
Problem reports:       http://cygwin.com/problems.html
Documentation:         http://cygwin.com/docs.html
FAQ:                   http://cygwin.com/faq/