Re: Example Ada calling Gnu Scientific Library (GSL)

[hreba <f_hreba@yahoo.com.br>]

On 04/10/2017 05:44 PM, Simon Wright wrote:
> Oops, thanks Dmitry: I should have said
>
>  package Linker is
>     for Linker_Options use ("-lgsl");
>  end Linker;
>
> (in your lowest-level GPR, gsl_raw I think?)
>

FINALLY!

I had to add "-L/usr/lib"!. This provoked a series of other link errors 
showing that "-lgslcblas" is needed too. Now for completeness and 
perhaps as help for others, my 3 project files are:

1. Thin binding:

library project GSL_Raw is
    for Source_Dirs use ("src");
    for Library_Dir use "lib";
    for Object_Dir use "obj";
    for Library_Name use "gsl_raw";
    for Library_Kind use "static";
    for Externally_Built use "false";
end GSL_Raw;

2. Thick binding:

with "GSL_Raw/gsl_raw";

library project GSL is
    for Source_Dirs use ("src");
    for Library_Name use "gsl";
    for Library_Dir use "lib";
    for Object_Dir use "obj";
    for Library_Interface use ("gsl");
    for library_kind use "static";
    for externally_built use "false";

    package Compiler is
       for Default_Switches ("Ada") use ("-g", "-gnat05");
    end Compiler;

    package Linker is
       for Linker_Options use ("-L/usr/lib", "-lgslcblas", "-lgsl");
    end Linker;
end GSL;

3. Test program

with "../../gsl.gpr";
with "../../../Gen/gen.gpr";   --<-- a libray I use in my program

project Test_Integration is

    for Source_Dirs use (".");
    for Object_Dir use "../obj";
    for Exec_Dir use ".";
    for Main use ("test_integration.adb");

    package Compiler is
       for Default_Switches ("ada") use ("-g", "-gnat05");
    end Compiler;

end Test_Integration;

Thanks to all for your help, and specially to Simon for his patience.
-- 
Frank Hrebabetzky		+49 / 6355 / 989 5070