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From: =?UTF-8?B?QmrDtnJu?= Persson <bjorn@xn--rombobjrn-67a.se>
Newsgroups: comp.lang.ada
Subject: Re: Controlling the linking of shared libraries
Followup-To: comp.lang.ada
Date: Wed, 27 Jul 2011 01:37:54 +0200
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Date: 2011-07-27T01:37:54+02:00
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Vincent wrote:

> However, if you specify the value of one of these attribute with an
> external_as_list, you will be able to specify library options with a
> switch -X.
> 
> Example:
> 
> project Prj is
>    for Library_Name use "prj";
>    for Library_Dir  use "lib";
>    for Library_Kind use "relocatable";
>    for Library_Options use external_as_list ("LOPTS", ",");
> end Prj;
> 
> $ gprbuild -P prj.gpr "-XLOPTS=-v,-v"

It would be great if everybody would make a habit of always including that 
in library project files, only with two changes: Use the established name 
"LDFLAGS", not "LOPTS", and use a space for separator, not a comma:

    for Library_Options use external_as_list ("LDFLAGS", " ");

That would make it easy for users and packagers to add any linker options 
they might need in their environment.

Writing and maintaining custom patches to add support for LDFLAGS to x 
packages in y distributions is not so great.

-- 
Björn Persson
PGP key A88682FD