Re: [RFC] cygport: split debuginfo packages

[Corinna Vinschen <corinna-cygwin@cygwin.com>]

On Jun 21 11:03, Corinna Vinschen wrote:
> On Jun 21 01:24, Yaakov (Cygwin/X) wrote:
> > Attached is a first draft of a patch to support split debuginfo
> > packages automatically in cygport.  I'm looking for comments and
> > suggestions, particularly on the following:
> > 
> > 1) I propose adding a Debug category for all -debuginfo packages.
> > 
> > 2) This places the debuginfo from e.g. /usr/bin/cygfoo-X.dll into
> > /usr/lib/debug/usr/bin/cygfoo-X.dbg.  Unfortunately, when gdb finds
> > library dependencies, they show up as e.g.
> > /cygdrive/c/cygwin/bin/cygfoo-X.dll instead of as in /usr/bin,
> > causing gdb to not find the debug file.  There are at least three
> > solutions to this:
> > 
> > a. Fix (cygwin or) gdb to use /usr paths over /cygdrive/c/cygwin paths;
> 
> I just had a quick look into this issue and it turns out that GDB
> doesn't use cygwin_conv_path in all circumstances.  Rather, it uses
> realpath in most circumstances.
> 
> The problem is a long standing behaviour (since 2005) of realpath:
> A DOS path is always converted to its /cygdrive equivalent.
> 
> I think the right thing to do here is to fix realpath.  It just has
> to be done carefully so as not to re-introduce the bugs fixed by
> introducing this behaviour back then.
> 
> > b. Move debug files to a .debug subdirectory (e.g.
> > /usr/bin/.debug/cygfoo-X.dbg);
> > c. Move debug files alongside binaries (e.g. /usr/bin/cygfoo-X.dbg).
> 
> The upside of c is that debug files alongside the binaries always works.
> The downside is the enormous clutter in /bin.  I'll fix realpath in the
> first place and then we can see how /usr/lib/debug works out, I guess.

That was easier thatn I thought.  I applied a patch so realpath now
returns a "real" POSIX path, just like cygwin_conv_path.


Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Project Co-Leader          cygwin AT cygwin DOT com
Red Hat