Problems passing compiler parameters in GPR files

Problems passing compiler parameters in GPR files

[Lucretia]

Hi,

I've been updating my bare bones project (https://github.com/Lucretia/bare_bones) to use a later version of GNAT (currently, 4.9).

I've run into a problem passing gnatmake parameters in the GPR files. I've set -gnaty-s and -gnatM120 for example and they both get ignored unless I add them to the i586-elf-gnatmake commandline.

I've managed to get the parameters to be recognised by doing this in the bare_bones.gpr:

   package Builder is
      Ada_Switches := ("-gnat2012", "-gnata", "-gnato", "-gnatE",
                       "-gnaty", "-gnaty-s", "-gnatyO", "-gnaty+M120", "-gnatyx",
                       "-gnaty+d", "-gnatv");
   end Builder;

   package Compiler is
      Ada_Switches := ("-ffunction-sections", "-fdata-sections") & Builder.Ada_Switches;
      --                         "-gnat2012", "-gnata", "-gnato", "-gnatE",
      --                         "-gnatyN", "-gnaty", "-gnaty-s", "-gnatyO", "-gnatyM120", "-gnatyx",
      --                         "-gnaty+d", "-gnatv");

I've no real clue why not having only those in the builder don't work. Can anyone explain?

Thanks,
Luke.

Re: Problems passing compiler parameters in GPR files

[briot.emmanuel]

> I've no real clue why not having only those in the builder don't work. Can anyone explain?

That's too many negatives in the same sentence, but your project is only declaring a variable, it isn't modifying any of the project attributes that the tools read. Also these are compiler switches, not builder switches.

    package Compiler is
        for Switches ("Ada") use ("-gnata", ....);
    end Compiler;