[PPL-devel] [Fwd: ac_check_gmp.m4 in ppl]

[Roberto Bagnara]

-------- Original Message --------
Subject: ac_check_gmp.m4 in ppl
Date: Mon, 27 Oct 2003 13:49:20 +0100
From: Bruno Haible <bruno at clisp.org>
To: Roberto Bagnara <bagnara at cs.unipr.it>

Hi,

While compiling ppl-0.5 I had problems telling the configure script where
my libgmp is installed. Just

    --with-gmp-includes=/packages/gnu/include --with-gmp-lib=/packages/gnu/lib

wasn't enough, because
    1. the test program is linked without any -L option,
    2. the test program is linked without any -rpath option and then immediately
       run - which doesn't work when a program depends on shared libraries
       in nonstandard locations.
As a workaround, I had to use

    LDFLAGS="-L/packages/gnu/lib -Wl,-rpath,/packages/gnu/lib" \
    ./configure --prefix=/packages/gnu \
      --with-gmp-includes=/packages/gnu/include --with-gmp-lib=/packages/gnu/lib

You could make this easier by using
    AC_LIB_LINKFLAGS(gmpxx, gmp)
in your configure.ac file. The AC_LIB_LINKFLAGS macro is defined in
gettext-0.12.1/autoconf-lib-link/m4/*.m4 from the GNU gettext-0.12.1
distribution.

Best regards,
                    Bruno


-- 
Prof. Roberto Bagnara
Computer Science Group
Department of Mathematics, University of Parma, Italy
http://www.cs.unipr.it/~bagnara/
mailto:bagnara at cs.unipr.it