Re: How to supply O/S linker arguments with gprbuild?

[Mark Lorenzen <mark.lorenzen@gmail.com>]

On Monday, June 22, 2020 at 5:51:50 PM UTC+2, Warren wrote:
> I have a GNAT project that has these pragma statements embedded to get the sucker to link. However, the directory is only valid for an instance on my Mac, so I need a better solution to replace:
> 
>    pragma Linker_Options("-L/usr/local/Cellar/readline/8.0.4/lib");
>    pragma Linker_Options("-lreadline");
> 
> I've tried to find the solution in the gnat documents but they seem to fall short of what I need to do (could not find an example nor direction in this -- perhaps I missed it).
> 
> My project file looks something like this:
> 
> project MyProject is
>     for Languages use ("ada", "c");
>     for Source_Dirs use ("src");
>     for Object_Dir use "obj";
>     for Main use ("main.adb");
> end MyProject;
> 
> I've tried a variety of gpr things, but unsuccessfully. 
> 
> Warren

Take a look at this tiny example project file: http://docs.adacore.com/live/wave/gprbuild/html/gprbuild_ug/gprbuild_ug/gnat_project_manager.html#tools-options-in-project-files

You want to configure the linker options in package Linker. You can select between Mac, Linux, Windows, whatever using scenario variables: http://docs.adacore.com/live/wave/gprbuild/html/gprbuild_ug/gprbuild_ug/gnat_project_manager.html#scenarios-in-projects

Regards,
Mark L