[PATCH]: Fix configure.ac to allow linking against PCRE on Cygwin

[Corinna Vinschen]

On Fri, Nov 23, 2001 at 06:24:38PM -0800, Tim Rice wrote:
> 
> On Fri, 23 Nov 2001 openssh-unix-dev at thewrittenword.com wrote:
> 
> > On Fri, Nov 23, 2001 at 10:51:53AM -0800, Tim Rice wrote:
> > > On Fri, 23 Nov 2001, Corinna Vinschen wrote:
> > >
> > > > No, it doesn't, unfortunately.  recomp is defined in Cygwin even
> > > > without the external regex library but it's a very old implementation
> > > > which is incompatible with POSIX regex and which is still in Cygwin
> > > > for some sort of backward compatibility.  That means the test for
> > > > regcomp() works successfully and so the test is sure that using regex
> > > > is sure even without linking against -lregex.  But the compiled ssh
> > > > doesn't work then.
> > > >
> > > > Corinna
> > >
> > > Try this patch.
> > > It gives preference to libregex over regex functions in libc.
> >
> > Ick. If the version in libc is incompatible with POSIX regex, why not
> > AC_TRY_RUN with code that will work with POSIX regex but fail with the
> > libc version. This would probably be more portable and a better
> > long-term solution.
> >
> 
> Yes, The more I think about it the more I don't like my fix.
> Corinna, can you track down where ssh is failing with the libc regex
> and write a small test program to test this?

Testing for regfree() or regex.h would be sufficient.  The old V8
implementation doesn't have regfree() and the header is regexp.h.

Corinna

-- 
Corinna Vinschen
Cygwin Developer
Red Hat, Inc.
mailto:vinschen at redhat.com