Re: SDL Ada package fails to compile on Mac, gnat 13.1, missing "SDL2_ttf/SDL_ttf.h"

[Kenneth Wolcott <kennethwolcott@gmail.com>]

On Thursday, June 29, 2023 at 9:06:56 AM UTC-7, Simon Wright wrote:
> "Luke A. Guest" writes: 
> 
> > Yeah, unfortunately I cannot remove the C files as they turn C macros 
> > into variables and are useful at runtime, see the sdlada repo for 
> > someone who wants to get rid of them.
> I had exactly this in tcladashell; even better, a Tcl script to generate 
> a C source, compiled against the Tcl/Tk libraries and run to generate 
> Ada source specifying record sizes/alignments.

Hi Luke & Simon;

  Let's see if I can properly address all of the wonderful responses in a summarized fashion.

1. I'm using gnatmake versus gprbuild because I just haven't gotten used to it yet, not avoiding it specifically.  Of course it looks like it makes things easier...

2. I stopped using Alire because I wanted a native gnat compiler and Alire didn't provide one and now that I installed and am using Simon's (again, thank you) build, Alire refuses to "get" some interesting packages.   I'll respond later with some specific examples.  Perhaps I have Alire improperly installed or configured...

3. I have installed libsdl2 via MacPorts:
port list | grep sdl2
libsdl2_mixer                  @2.6.3          audio/libsdl2_mixer
libsdl2                        @2.28.0         devel/libsdl2
libsdl2-snowleopard            @2.0.22         devel/libsdl2-snowleopard
libsdl2_gfx                    @1.0.4          devel/libsdl2_gfx
libsdl2_image                  @2.6.3          devel/libsdl2_image
libsdl2_net                    @2.2.0          devel/libsdl2_net
libsdl2_ttf                    @2.20.2         devel/libsdl2_ttf

4. Examples of Alire's "get" failure:
alr --no-color search --crates sdl
labs_solar_system  A set of SDL-based exercises to learn Ada
libsdl2            Simple DirectMedia Layer development files
libsdl2_image      Simple DirectMedia Layer development files - Image
libsdl2_ttf        Simple DirectMedia Layer development files - TTF
pygamer_simulator  SDL simulator of the AdaFruit PyGamer console
sdlada             Ada 2012 SDL 2.x bindings.

alr --no-color get sdlada
Warning:
Warning:    New solution is incomplete.
Warning:    +~ libsdl2       ^2.0.0 (new,external)
Warning:    +~ libsdl2_image ^2.0.0 (new,external)
Warning:    +~ libsdl2_ttf   ^2.0.0 (new,external)
Warning:    +  make          3.81.0 (new)
Warning:
Warning: Could not find a complete solution for sdlada=2.5.5
Build will fail unless externals are made available, do you want to continue?
[Y] Yes  [N] No  (default is No) n
ERROR: Crate retrieval abandoned.

alr --no-color get libsdl2_ttf
ERROR: No source release indexed for the requested crate, and cannot use system packages in unknown distribution

alr --no-color get libsdl2
ERROR: No source release indexed for the requested crate, and cannot use system packages in unknown distribution

Thanks,
Ken