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Newsgroups: comp.lang.ada
Date: Mon, 22 Jun 2020 09:14:43 -0700 (PDT)
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Subject: Re: How to supply O/S linker arguments with gprbuild?
From: Mark Lorenzen <mark.lorenzen@gmail.com>
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Xref: reader01.eternal-september.org comp.lang.ada:59161
List-Id: <comp.lang.ada>

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 th=
e sucker to link. However, the directory is only valid for an instance on m=
y Mac, so I need a better solution to replace:
>=20
>    pragma Linker_Options("-L/usr/local/Cellar/readline/8.0.4/lib");
>    pragma Linker_Options("-lreadline");
>=20
> I've tried to find the solution in the gnat documents but they seem to fa=
ll short of what I need to do (could not find an example nor direction in t=
his -- perhaps I missed it).
>=20
> My project file looks something like this:
>=20
> 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;
>=20
> I've tried a variety of gpr things, but unsuccessfully.=20
>=20
> 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_m=
anager.html#scenarios-in-projects

Regards,
Mark L