Re: GNAT on MinGW

[Cesar Rabak <csrabak@yahoo.com.br>]

Vo, Anh (US SSA) escreveu:
> -----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.
> 
> [...]
[snipped]

> 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
> 
It seems it has a hardcode "/mingw/include" path in some config file or
some source (probably a header file generated by ./configure).

My quick shot for testing the hypotesis would be to add in fstab file a 
mapping for /mingw/include to /usr/gnat/mingw32/include (which IIUC is 
your path to the system include files).

HTH