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

[Corinna Vinschen]

On Thu, Nov 22, 2001 at 07:12:40PM -0800, Tim Rice wrote:
> On Thu, 22 Nov 2001, Corinna Vinschen wrote:
> 
> > Hi,
> >
> > the current configure.ac file contains an unfortunately static
> > setting of $LIBS when the host system is Cygwin.  It always
> > adds -lregex to $LIBS before the --with-pcre setting is evaluated.
> > The later adding of -lpcreposix -lpcre doesn't work correctly
> > since it follows later in the link order.
> >
> > +case "$host" in
> > +*-*-cygwin*)
> I'd rather not see another case $host
> Please try this patch and see if it solves your problem

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


> --------------------< cut >--------------------
> --- configure.ac.old	Sat Nov  3 11:09:33 2001
> +++ configure.ac	Thu Nov 22 18:43:51 2001
> @@ -65,7 +65,7 @@
>  	AC_DEFINE(DISABLE_LASTLOG)
>  	;;
>  *-*-cygwin*)
> -	LIBS="$LIBS -lregex /usr/lib/textmode.o"
> +	LIBS="$LIBS /usr/lib/textmode.o"
>  	AC_DEFINE(HAVE_CYGWIN)
>  	AC_DEFINE(USE_PIPES)
>  	AC_DEFINE(DISABLE_SHADOW)
> @@ -409,7 +409,10 @@
>  				LIBS="$LIBS -lpcreposix -lpcre"
>  			],
>  			[
> +				AC_CHECK_LIB(regex, regcomp, LIBS="$LIBS -lregex",
> +			[
>  				AC_MSG_ERROR([*** No regex library found.])
> +				])
>  			])
>  		]
>  	)
> --------------------< end cut >--------------------
> 
> -- 
> Tim Rice				Multitalents	(707) 887-1469
> tim at multitalents.net
> 

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