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From: Simon Wright <simon@pushface.org>
Newsgroups: comp.lang.ada
Subject: Re: gdb will not "catch exception" or "catch exception unhandled"
Date: Fri, 07 Oct 2011 17:34:45 +0100
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Date: 2011-10-07T17:34:45+01:00
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Jerry <lanceboyle@qwest.net> writes:

> On Oct 6, 3:57 am, Simon Wright <si...@pushface.org> wrote:
>> Jerry <lancebo...@qwest.net> writes:
>> > I'm having considerable difficulty getting gdb to break on exceptions;
>> > in fact, I can't get it to work at all.
>>
>> I wrote up something on this here:http://forward-in-code.blogspot.com/2011/08/debugging-with-mac-os-x-s...
>
> That's really helpful, Simon. Thanks. I pretty much understood your
> article which means that it's really well-written. 8^)

Thank you!

> "HOWEVER, IF YOU CALL IN AN ADA SHARED LIBRARY BY MISTAKE (PERHAPS
> BECAUSE YOU MISSED AN EXTERNAL VARIABLE SETTING IN A .GPR), the linker
> will find the dynamic Ada runtime because it's referenced from the Ada
> shared library:"
>
> otool on my executable:
>
> MBPro:product-debug me$ otool -L ./run
> ./run:
> 	/usr/local/plplot/lib/libplplotd.11.dylib (compatibility version
> 11.0.0, current version 11.0.0)
> 	@rpath/libgnat-2010.dylib (compatibility version 0.0.0, current
> version 0.0.0)
> 	/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current
> version 125.2.11)
> 	/System/Library/Frameworks/vecLib.framework/Versions/A/vecLib
> (compatibility version 1.0.0, current version 268.0.1)
>
> libplplotd is the PLplot library which I link to; this is almost
> certainly referring to libgnat.

I think so.

>                                 But did I do something wrong? This is
> the first project on which I have used gpr, and I found the gpr
> documentation to be not the finest example of technical writing.

Couldn't possibly comment!

> My main gpr file has this:
>   with "PLplot_Library";
> and
>   PLplot_Library.gpr
> is this:
>
>   library project PLplot_Library is
> 	for Externally_Built use "true";
> 	for Source_Dirs use ();
> 	for Library_Dir use "/usr/local/plplot/lib";
> 	for Library_Name use "plplotd";
> 	for Library_Kind use "dynamic";
>   end PLplot_Library;
>
> Is there something that I could do better here or am I stuck because I
> need to link to libplplotd which references libgnat?

Is there an option in the build GPR for PLplot to build it as a static
library? (actually, plplot-5.9.8 doesn't include any *.gpr* files ...?)