Re: M1 MAC - libraries

["Rajagopalan Srinivasan 192/73" <rsrinivasan@alumni.iitm.ac.in>]

On Monday, July 31, 2023 at 3:59:04 AM UTC-4, Simon Wright wrote:
> "Rajagopalan Srinivasan 192/73" <rsrin...@alumni.iitm.ac.in> writes: 
> 
> > 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?
> 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";
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;