RE: GNAT on MinGW

["Vo, Anh \(US SSA\)" <Anh.Vo@baesystems.com>]

-----Original Message-----
From: comp.lang.ada-bounces+anh.vo=baesystems.com@ada-france.org
[mailto:comp.lang.ada-bounces+anh.vo=baesystems.com@ada-france.org] On
Behalf Of Martin Krischik
Sent: Wednesday, February 28, 2007 11:05 PM
To: comp.lang.ada@ada-france.org
Subject: Re: GNAT on MinGW

<< Michael Bode schrieb:
> Martin Krischik <krischik@users.sourceforge.net> writes:
> 
>> I was able to create a gcc-4.1.x on a MinGW/Cygwin combo - However it
>> was GNAT/Pro 6.0.1 being created using GNAT/Pro 6.0.0w. - Not much
>> help for the Open Source Community.
> 
> I thought you were successfull cross compiling a mingw gcc from linux?

No I created a cross compiler for linux. Next step would have been to 
use that cross compiler to create a native MinGW compiler. But that 
proved difficult.

I have now tried all sorts of tricks and nothing worked out - there was 
always some show stopper down the line. >>

Danny Smith at mingw.org has been building GNAT for Windows. The latest
version is 3.4.5. The MinGW/GNAT has less tools when compared to
GNAT-GPL.

Way back I successfully built GNAT using cygwin. The problem was that
the GNAT built did not support tasking run-time because GNAT under
cygwin, used to build the newer GNAT, does not have tasking run-time
support. Therefore, any Ada codes involving task will not run.

Currently, I port MinGW/GNAT to cygwin and build gcc/gnat-4.1.2 using
cygwin. The build hit a snap after going one fourth of the way. I
scratch my hair with error message as shown below. I would be thankful
if any one can tell me what headers it looks for.

[...]
mv tmp-specs specs
if true ; then \
          cat ../../gcc-4.1.2/gcc/limitx.h ../../gcc-4.1.2/gcc/glimits.h
../../g
cc-4.1.2/gcc/limity.h > tmp-xlimits.h; \
        else \
          cat ../../gcc-4.1.2/gcc/glimits.h > tmp-xlimits.h; \
        fi
mv tmp-xlimits.h xlimits.h
echo |  ./xgcc -B./ -B/usr/gnat/mingw32/bin/ -isystem
/usr/gnat/mingw32/include
-isystem /usr/gnat/mingw32/sys-include
-L/cygdrive/e/build-4.1.2/gcc/../ld -E -d
M - | \
          sed -n -e 's/^#define \([^_][a-zA-Z0-9_]*\).*/\1/p' \
                -e 's/^#define \(_[^_A-Z][a-zA-Z0-9_]*\).*/\1/p' | \
          sort -u > tmp-macro_list
/bin/sh ../../gcc-4.1.2/gcc/../move-if-change tmp-macro_list macro_list
echo timestamp > s-macro_list
The directory that should contain system headers does not exist:
  /mingw/include
make[2]: *** [stmp-fixinc] Error 1
make[2]: Leaving directory `/cygdrive/e/build-4.1.2/gcc'
make[1]: *** [stage1_build] Error 2
make[1]: Leaving directory `/cygdrive/e/build-4.1.2/gcc'
make: *** [bootstrap] Error 2