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From: sjw <simon.j.wright@mac.com>
Newsgroups: comp.lang.ada
Subject: Re: About static libraries and Debian policy
Date: Fri, 14 May 2010 07:57:49 -0700 (PDT)
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Date: 2010-05-14T07:57:49-07:00
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On May 14, 2:16=A0pm, "Dmitry A. Kazakov" <mail...@dmitry-kazakov.de>
wrote:
> http://people.debian.org/~lbrenta/debian-ada-policy.html
>
> requires no static libraries. Is that consistent with GNAT symbolic
> traceback, which for some unclear reasons is not included into GNAT
> relocatable RTL.
>
> BTW, Why there should be no traceback when relocatable libraries are used=
?

The problem is, I think, that the GNAT RTL (libgnat, libgnarl) isn't
compiled with debug (-g), so there are no symbols available to
interpret the traceback.

This was certainly true with VxWorks static libraries a while back,
while we were compiling our own we used -g which allowed us to use
vxaddr2line and trace into the RTS. Since we changed to using the
standard RTS + changes compiled using powerpc-wrs-vxworks-gnatmake -a
I can't say we've missed the facility.

> What would happen if g-trasym.o (symbolic traceback) were put into a stat=
ic
> library and then linked together with relocatable RTL?

I don't know whether you can debug into or get traceback from inside a
dynamic library. Probably depends on the target OS.