Re: [xml] autoconf/automake and libxml2

[Malcolm Tredinnick <malcolm commsecure com au>]

On Mon, 2004-02-16 at 03:00, Jesper Mørk wrote:
> Hi List

Hi Jesper. :-)

> I'm trying to compile a small library using libxml2. I'm trying to use
> autoconf and automake to create my makefiles The thing is that when ever
> i run make I get a lot of parse errors in the libxml2 library (parser.h
> especially). The problem is probably that I don't link to the library
> correctly. Here's my configure.ac:
>
>
> AC_INIT(src/gvideodb/gvideodb.c)
> AM_INIT_AUTOMAKE(gvideodb, 'cat ./VERSION')
> AM_CONFIG_HEADER(config.h)
>
> PACKAGE=gvideodb
>
> # Checks for programs.
> AC_PROG_CC
> AC_PROG_LIBTOOL
>
> # Checks for libraries.
> AM_PATH_GLIB_2_0(2.0.0,,AC_MSG_ERROR([
> *** GLib 2.0 is required to build GVideoDB; Available at
> http://www.gtk.org/.]))
> AM_PATH_XML2(2.5.0,,AC_MSG_ERROR([
> *** Libxml is required to build GVideoDB; Available at
> http://www.libxml.org/.]))
> AM_PATH_GTK_2_0(2.0.0,,AC_MSG_ERROR([
> *** GTK+ 2.0 is required to build GVideoDB; Available at
> http://www.gtk.org/.]))
>
> #Langauge Settings
> ALL_LINGUAS=""
> AM_GLIB_GNU_GETTEXT
>
> GETTEXT_PACKAGE=$PACKAGE
> AC_SUBST(GETTEXT_PACKAGE)
> AC_DEFINE_UNQUOTED([GETTEXT_PACKAGE], ["${GETTEXT_PACKAGE}"], [gettext
> domain])
>
> AM_CFLAGS=(`pkg-config gtk+-2.0 --cflags` `xml2-config --cflags`)
>
> AC_OUTPUT(
> Makefile
> src/Makefile
> src/gvideodb/Makefile
> src/libgvdb/Makefile
> po/Makefile.in
> )dnl

Your use of pkg-config is different from normal. Plus you can use
pkg-config for libxml as well (it has had a .pc files for a couple of
years or so). Typical usage is this...

In configure.ac:

PKG_CHECK_MODULES(GVIDEO, gtk+-2.0 libxml-2.0)
AC_SUBST(GVIDEO_CFLAGS)
AC_SUBST(GVIDEO_LIBS)

then in Makefile.am

INCLUDE = @GVIDEO_CFLAGS@ ...
LDADD = @GVIDEO_LIBS@ ...

This should then work as you expect.

Cheers,
Malcolm