Re: Setting up GPRBUILD for Ada in mingw64

[Jere <jhb.chat@gmail.com>]

On Wednesday, July 12, 2017 at 9:09:56 AM UTC-4, Jere wrote:
> On Wednesday, July 12, 2017 at 2:50:10 AM UTC-4, Simon Wright wrote:
> > Jere writes:
> > 
> > > but when I tried to run a simple:
> > >
> > > gprbuild -P test_gnoga.gpr
> > >
> > > or any gpr file for that matter, I get the following error
> > >
> > > "Error: no native compiler found for language 'ada', default runtime
> > > test_gnoga.gpr:1:06: unknown project file: "Gnoga"
> > > gprbuild: "test_gnoga.gpr" processing failed"
> > 
> > gprbuild uses gprconfig to work out what compilers are
> > available. gprconfig probes the environment in various ways, for example
> > by examining the output of "gcc -dumpmachine".
> > 
> > Try running "gprconfig -v foo.gpr" and see whether (a) the compiler
> > you've installed is found at all, (b) [if you can! the output can be a
> > bit terse] why it was rejected.
> > 
> 
> 
> Sorry, the earlier attempt had bad formatting.  Hopefully this looks better:
> $ gprbuild -v test_gnoga.gpr
> GPRBUILD GPL 2015 (20150428) (i686-pc-mingw32)
> Copyright (C) 2004-2015, Free Software Foundation, Inc.
>  24 lines: No errors
> gprconfig --batch -o D:\Program_Files\msys64\home\Jere\Test_Gnoga\obj\auto.cgpr                                                                  
> --target=x86-windows --config=ada,,
> Error: no native compiler found for language 'ada', default runtime
> Creating configuration file: D:\Program_Files\msys64\home\Jere\Test_Gnoga\obj\
> auto.cgpr
> Checking configuration D:\Program_Files\msys64\home\Jere\Test_Gnoga\obj\
> auto.cgpr
> Setting the default project search directories
> 
> ==============Error messages for project file: D:\Program_Files\msys64\home\
> Jere\test_gnoga.gpr
>      1. with "Gnoga";
>              |
>         >>> unknown project file: "Gnoga"
> 
>  24 lines: 1 error
> gprbuild: "test_gnoga.gpr" processing failed

So after a month or so playing with this, I finally at 
least got a workaround going.  I was never able to get 
gprbuild to compile correctly, so I went back to trying 
to get this version of gprbuild to work with my target.

My target ended up being x86_64-w64-mingw32 instead of 
the x86-windows specified in the -v output.  I looked 
up gprconfig in the manual and ended up using:

$ gprconfig --target=x86_64-w64-mingw32 --config=Ada batch

to generate a .cgpr file (I selected all the options before 
saving), which I renamed to default.cgpr and placed it
in my /msys64/mingw64/share/gpr folder.  This causes gprbuild 
and related executables to use my target when running.  
Now I am able to use gprbuild with mingw64 and GCC 7.2 
on Windows 10.  Yay!

I still wish I could have gotten it to build correctly, but 
I'll take what I can get for now.