M1 MAC - libraries

[Rajagopalan Srinivasan 192/73]

What is the way to specify platform dependent Linker options on a Mac?

for linux I use something like the following in my gpr file:

case os is

when "GNU/Linux" =>

not sure what is equivalent for the M1 Mac?

thanks, Srini

[Simon Wright]

What is "os" in the above? If it's the environment variable OS then,
indeed, there's no equivalent on macOS (either kind of silicon).

I don't know whether Windows defines "OS", but if it does you could just
set Darwin (or whatever) as the default?

OS := external ("OS", "Darwin");

If you're using Alire, the generated config/{crate}_config.gpr contains
on macOS

Alire_Host_OS := "macos";

[Rajagopalan Srinivasan 192/73]

> Alire_Host_OS := "macOS";
Excellent suggestion. The following worked:

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