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Re: PATCH: Make sure gdb-cfg.texi is created


On Fri, May 09, 2003 at 01:10:49PM -0700, H. J. Lu wrote:
> On Fri, May 09, 2003 at 04:06:43PM -0400, Daniel Jacobowitz wrote:
> > On Fri, May 09, 2003 at 12:59:43PM -0700, H. J. Lu wrote:
> > > On Fri, May 09, 2003 at 03:32:06PM -0400, Daniel Jacobowitz wrote:
> > > > On Fri, May 09, 2003 at 12:24:34PM -0700, H. J. Lu wrote:
> > > > > My gdb source tree is created with relative symlinks. ln -s won't work
> > > > > with them. Here is a patch to make sure gdb-cfg.texi is created.
> > > > 
> > > > That patch doesn't make sense.  You're saying that ln -s can succeed
> > > > when test -e would fail?
> > > > 
> > > 
> > > I got
> > > 
> > > # bash
> > > # ln -s "doesn't exist" foo || echo bad
> > > # test -e foo || echo "doesn't exist"
> > > doesn't exist
> > 
> > Sure, but then why would "ln" or "cp" work from "doesn't exist"?
> 
> I have a tree with relative symlinks. all-cfg.texi in the source tree
> is
> 
> # ls -l /export/gnu/src/gdb/gdb/gdb/doc/all-cfg.texi
> lrwxrwxrwx    1 hjl      hjl            50 May  9 09:58 /export/gnu/src/gdb/gdb/gdb/doc/all-cfg.texi -> ../../../../../import/gdb/src/gdb/doc/all-cfg.texi
> 
> Since my build dir != source dir,
> 
> ../../../../../import/gdb/src/gdb/doc/all-cfg.texi
> 
> doesn't exist in my build dir.

Maybe I'm missing something obvious.  The link will be created to point
at /export/gnu/src/gdb/gdb/gdb/doc/all-cfg.texi.  Whether
../../../../../import/gdb/src/gdb/doc/all-cfg.texi exists from that
directory does not matter.  It will be resolved from the directory
containing the second symlink.

Otherwise relative symlinks would never be useful.

-- 
Daniel Jacobowitz
MontaVista Software                         Debian GNU/Linux Developer


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