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Autoconf and Automake support for ObjC++

From: Peter Breitenlohner
Subject: Autoconf and Automake support for ObjC++
Date: Tue, 21 Jul 2009 11:26:15 +0200 (CEST)
User-agent: Alpine 2.00 (LNX 1167 2008-08-23)

On Tue, 21 Jul 2009, Ralf Wildenhues wrote:

* Peter Breitenlohner wrote on Mon, Jul 20, 2009 at 03:35:48PM CEST:
On Mon, 20 Jul 2009, Peter Breitenlohner wrote:

are there any plans that Automake supports ObjC++ (as implemented in

AFAIK nobody else is working on patches yet; they would be very welcome.
I suppose adding ObjC++ support should be very straightforward.  Thanks.

I forgot to mention: of course, this would require that Autoconf supports
ObjC++.  Are you aware of any plans into that direction?

Nope.  Since 2.64 might not be far away, you might want to do this
first.  (Otherwise, there is also the possibility for an

Hi Eric,

can you tell me the approximate schedule for Autoconf 2.64. I'd like to
create patches adding support for ObjC++, preferably in time for 2.64.


Another item:

During the last several months I was involved in a complete rewrite of
the TeXlive (formerly teTeX) build system using Automake and modernized

In doing so I "had" to use the names of various cache variables, in order to
write, e.g.
        AC_CHECK_HEADERS([inttypes.h sys/types.h <more_headers>])
        if test "x$ac_cv_header_inttypes_h:$ac_cv_header_sys_types_h" \
                = xno:no; then
instead of the more clumsy and less efficient
        AC_CHECK_HEADERS([inttypes.h], [have_inttypes_h=yes],
        AC_CHECK_HEADERS([sys/types.h], [have_sys_types_h=yes],
        if test "x$have_inttypes_h:$have_sys_types_h" = xno:no; then

One set of cache variables, where this is particularly important is
ac_cv_search_* if I want to use, e.g.,
        AC_SEARCH_LIBS([connect], [socket nsl])
but want to have the required library (if any) in a separate variable such
as SOCKET_LIBS and not added to LIBS.

It would be nice if these ac_cv_* names could be made part of the API, i.e.,
be frozen and documented.


Peter Breitenlohner <address@hidden>

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