RE: Mips cross compiler for cygwin

["Steve Sanders" <steve dot sanders at alereon dot com>]

Bill,

Could you elaborate about nuking sys-include after building the bootstrap
loader? I have been trying to build a cross tool for arm7tdmi with some
success using your article as a starting point. Is this an appropriate thing
to do for building the arm tool chain?

Steve


-----Original Message-----
From: crossgcc-owner@sources.redhat.com
[mailto:crossgcc-owner@sources.redhat.com]On Behalf Of Bill Gatliff
Sent: Tuesday, March 16, 2004 1:53 PM
To: Harry Kaes
Cc: crossgcc@sources.redhat.com
Subject: Re: Mips cross compiler for cygwin


Harry:


[Just happened to catch me at my desk!]

Make sure you nuke sys-include at the end of the bootstrap build, before
you build newlib or the "complete" gcc.


See if that helps,


b.g.

Harry Kaes wrote:

>Kaes Harry wrote
>
>
>>In the meantime I continued my attempts to build the cross compiler
>>following the instructions by Bill Gatliff. For this build I'm using gcc
>>sources 3.3.3, binutils 2.14 and newlib 1.12.0. I'm able to compile the
>>binutils (well, I don't get any errors anyway), as well as the newlib
>>library and the bootstrap cross compiler. I created a directory gcc on the
>>
>>
>c
>
>
>>drive and put the gcc sources in a subdirectory gcc-sources, the binutils
>>sources in binutils-2.14 and the newlib sources in newlib-1.12.0. I made
>>four directories (again as subdirectories of c:\gcc) to perform the builds
>>in : build-gcc (for the bootstrap compiler), build-newlib, build-binutils
>>and build-gcc-final (for the actual cross compiler). I compiled the
>>different sources in this order :
>>
>>from the directory build-binutils :
>>
>>
>>
>../binutils-2.14/configure --target=mipsel-elf --host=i686-pc-cygwin --buil
d
>
>
>>=i686-pc-cygwin --prefix=/gcc-mips --with-gnu-as --with-gnu-ld
>>make all install
>>from the directory build-gcc :
>>
>>
>>
>../gcc-sources/configure --target=mipsel-elf --host=i686-pc-cygwin --build=
i
>
>
>686-pc-cygwin --prefix=/gcc-mips --with-gnu-as --with-gnu-ld --without-head
e
>
>
>>rs --with-newlib -v
>>make all-gcc install-gcc
>>from the directory build-newlib :
>>
>>
>>
>../newlib-1.12.0/configure --target=mipsel-elf --host=i686-pc-cygwin --buil
d
>
>
>>=i686-pc-cygwin --prefix=/gcc-mips --with-gnu-as --with-gnu-ld
>>make all install
>>from the directory build-gcc-final :
>>
>>
>>
>../gcc-sources/configure --target=mipsel-elf --host=i686-pc-cygwin --build=
i
>
>
>>686-pc-cygwin --prefix=/gcc-mips --with-gnu-as --with-gnu-ld -v
>>make all install
>>
>>Running this final make to build the actual cross compiler results in an
>>error while executing the following command :
>>
>>
>>
>>
>/cygdrive/c/gcc/build-gcc-final/gcc/xgcc -shared-libgcc -B/cygdrive/c/gcc/b
u
>
>
>ild-gcc-final/gcc/ -nostdinc++ -L/cygdrive/c/gcc/build-gcc-final/mipsel-elf
/
>
>
>soft-float/libstdc++-v3/src -L/cygdrive/c/gcc/build-gcc-final/mipsel-elf/so
f
>
>
>t-float/libstdc++-v3/src/.libs -B/gcc-mips/mipsel-elf/bin/ -B/gcc-mips/mips
e
>
>
>>l-elf/lib/ -isystem
>>
>>
>>
>/gcc-mips/mipsel-elf/include -msoft-float -I../../../../../gcc-sources/libs
t
>
>
>dc++-v3/../gcc -I../../../../../gcc-sources/libstdc++-v3/../include -I/cygd
r
>
>
>ive/c/gcc/build-gcc-final/mipsel-elf/soft-float/libstdc++-v3/include/mipsel
-
>
>
>elf -I/cygdrive/c/gcc/build-gcc-final/mipsel-elf/soft-float/libstdc++-v3/in
c
>
>
>lude -I../../../../../gcc-sources/libstdc++-v3/libsupc++ -g -O2 -msoft-floa
t
>
>
>> -fno-implicit-templates -Wall -Wno-format -W -Wwrite-strings -fdiagnostic
>>
>>
>s-
>
>
>>show-location=once -c
>>../../../../../gcc-sources/libstdc++-v3/libsupc++/eh_alloc.cc -o
>>
>>
>eh_alloc.o
>
>
>>The resulting error is :
>>
>>In file included from
>>../../../../../gcc-sources/libstdc++-v3/libsupc++/eh_alloc
>>.cc:33:
>>
>>
>>
>/cygdrive/c/gcc/build-gcc-final/mipsel-elf/soft-float/libstdc++-v3/include/
c
>
>
>>stdl
>>ib:86: error: `
>>   div_t' not declared
>>
>>
>>
>/cygdrive/c/gcc/build-gcc-final/mipsel-elf/soft-float/libstdc++-v3/include/
c
>
>
>>stdl
>>ib:87: error: `
>>   ldiv_t' not declared
>>
>>
>>
>/cygdrive/c/gcc/build-gcc-final/mipsel-elf/soft-float/libstdc++-v3/include/
c
>
>
>>stdl
>>ib:97: error: `
>>   div' not declared
>>
>>
>>
>/cygdrive/c/gcc/build-gcc-final/mipsel-elf/soft-float/libstdc++-v3/include/
c
>
>
>>stdl
>>ib:102: error: `
>>   ldiv' not declared
>>
>>
>>
>/cygdrive/c/gcc/build-gcc-final/mipsel-elf/soft-float/libstdc++-v3/include/
c
>
>
>>stdl
>>ib:104: error: `
>>   mblen' not declared
>>
>>
>>
>/cygdrive/c/gcc/build-gcc-final/mipsel-elf/soft-float/libstdc++-v3/include/
c
>
>
>>stdl
>>ib:105: error: `
>>   mbstowcs' not declared
>>
>>
>>
>/cygdrive/c/gcc/build-gcc-final/mipsel-elf/soft-float/libstdc++-v3/include/
c
>
>
>>stdl
>>ib:106: error: `
>>   mbtowc' not declared
>>
>>
>>
>/cygdrive/c/gcc/build-gcc-final/mipsel-elf/soft-float/libstdc++-v3/include/
c
>
>
>>stdl
>>ib:115: error: `
>>   wcstombs' not declared
>>
>>
>>
>/cygdrive/c/gcc/build-gcc-final/mipsel-elf/soft-float/libstdc++-v3/include/
c
>
>
>>stdl
>>ib:116: error: `
>>   wctomb' not declared
>>
>>
>>
>/cygdrive/c/gcc/build-gcc-final/mipsel-elf/soft-float/libstdc++-v3/include/
c
>
>
>>stdl
>>ib:122: error: syntax
>>   error before `(' token
>>make[6]: *** [eh_alloc.lo] Error 1
>>make[6]: Leaving directory
>>`/cygdrive/c/gcc/build-gcc-final/mipsel-elf/soft-floa
>>t/libstdc++-v3/libsupc++'
>>make[5]: *** [all-recursive] Error 1
>>make[5]: Leaving directory
>>`/cygdrive/c/gcc/build-gcc-final/mipsel-elf/soft-floa
>>t/libstdc++-v3'
>>make[4]: *** [all-recursive-am] Error 2
>>make[4]: Leaving directory
>>`/cygdrive/c/gcc/build-gcc-final/mipsel-elf/soft-floa
>>t/libstdc++-v3'
>>make[3]: *** [multi-do] Error 1
>>make[3]: Leaving directory
>>`/cygdrive/c/gcc/build-gcc-final/mipsel-elf/libstdc++
>>-v3'
>>make[2]: *** [all-multi] Error 2
>>make[2]: Leaving directory
>>`/cygdrive/c/gcc/build-gcc-final/mipsel-elf/libstdc++
>>-v3'
>>make[1]: *** [all-recursive-am] Error 2
>>make[1]: Leaving directory
>>`/cygdrive/c/gcc/build-gcc-final/mipsel-elf/libstdc++
>>-v3'
>>make: *** [all-target-libstdc++-v3] Error 2
>>
>>To attempt a little debugging I concentrated on the first error : 'div_t'
>>not declared. I found some stdlib.h files scattered over the different
>>directories in which this define could be found. The stdlib.h file used by
>>this last command however, was the stdlib.h file in the directory
>>c:\gcc\build-gcc-final\gcc\include which of course did not contain a
>>declaration of div_t.
>>
>>Does anyone have an idea of what goes wrong?
>>
>>Harry Kaes.
>>
>>
>>
>
>I tried to find a solution for the problem in the archives of the mailing
>list and luckily I found a few mails concerning this problem. In most of
the
>cases, the solution is to delete the invalid stdlib.h file, so that gcc
>automatically takes the correct one (of the newlib sources) in a 'standard'
>directory. I found the descriptions of the solutions somewhat unclear
>however and I found myself unable to apply them to my situtation. The
>biggest problem is of course my lack of knowledge about the whole cross
>compiling system.
>If I follow the guidelines as described in
>http://sources.redhat.com/ml/crossgcc/2003-09/msg00104.html, I arrive at
the
>point where I should delete de stdlib.h file, but I am unable to find it in
>the directory as described in that message.
>
>Can anyone give a clearer view on the solution for this problem?
>
>Harry Kaes
>
>
>------
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>
>
>

--
Bill Gatliff
GNU-based embedded development, training and consulting services.
bgat@billgatliff.com




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