Re: Exporting linker options from library GPR

[Simon Wright <simon@pushface.org>]

Lucretia <laguest9000@googlemail.com> writes:

> On Thursday, 15 February 2018 08:49:44 UTC, Simon Wright  wrote:
>> Lucretia <me@me.com> writes:
>> > I have it building on Mac OS X as a static lib, but the options are
>> > controlled from the makefile.
>> 
>> When I built it as a dynamic library, I got (with some builds) an ACCVIO
>> during elaboration, which I took to be down to failing to initialize
>> libsdlada.dylib (it's not built as an SAL).
>
> What is ACCVIO and SAL?

ACCVIO : access violation

SAL: gprbuild term for a shared library that automatically runs
<lib-name>init to do elaboration on load.

So, although the binder calls in elaboration for the library components
that are explicitly used, it doesn't do complete elaboration for the
library, and you are open to runtime errors.

http://docs.adacore.com/live/wave/gprbuild/html/gprbuild_ug/gprbuild_ug/gnat_project_manager.html#stand-alone-library-projects

>> > So, before I push the changes, can anyone tell me if this is possible?
>> 
>> As a possible alternative, the attached makefile fragment works out
>> whether you're on Darwin or not, so you could decide in the makefile how
>> to get the options & then pass them through to the gpr.
>
> TBH, putting this stuff in the gpr is better.

It would be if it worked! but I don't see any way