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Newsgroups: comp.lang.ada
Date: Mon, 31 Jul 2023 02:07:56 -0700 (PDT)
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Subject: Re: M1 MAC - libraries
From: "Rajagopalan Srinivasan 192/73" <rsrinivasan@alumni.iitm.ac.in>
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On Monday, July 31, 2023 at 3:59:04=E2=80=AFAM UTC-4, Simon Wright wrote:
> "Rajagopalan Srinivasan 192/73" <rsrin...@alumni.iitm.ac.in> writes:=20
>=20
> > What is the way to specify platform dependent Linker options on a Mac?=
=20
> >=20
> > for linux I use something like the following in my gpr file:=20
> >=20
> > case os is=20
> >=20
> > when "GNU/Linux" =3D>=20
> >=20
> > not sure what is equivalent for the M1 Mac?
> What is "os" in the above? If it's the environment variable OS then,=20
> indeed, there's no equivalent on macOS (either kind of silicon).=20
>=20
> I don't know whether Windows defines "OS", but if it does you could just=
=20
> set Darwin (or whatever) as the default?=20
>=20
> OS :=3D external ("OS", "Darwin");=20
>=20
> If you're using Alire, the generated config/{crate}_config.gpr contains=
=20
> on macOS=20
>=20
> Alire_Host_OS :=3D "macOS";
Excellent suggestion. The following worked:

   package Linker is
      case audio_config.Alire_Host_OS is
         when "macos" =3D>
            for Switches("Ada") use ("-L/opt/homebrew/lib/", "-lsndfile");
         when others =3D>
            for Switches("Ada") use ("-lsndfile");
      end case;
   end Linker;