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dnl call this macro with the minimum required version as an argument
dnl this macro sets and AC_SUBSTs XML_CFLAGS and XML_LIBS
dnl it also sets LIBXML_PKG, used for the pkg-config file
AC_DEFUN([AG_GST_LIBXML2_CHECK],
[
dnl Minimum required version of libxml2
dnl default to 2.4.9 if not specified
LIBXML2_REQ=ifelse([$1],,2.4.9,[$1])
AC_SUBST(LIBXML2_REQ)
dnl check for libxml2
PKG_CHECK_MODULES(XML, libxml-2.0 >= $LIBXML2_REQ,
HAVE_LIBXML2=yes, HAVE_LIBXML2=no)
if test "x$HAVE_LIBXML2" = "xyes"; then
AC_DEFINE(HAVE_LIBXML2, 1, [Define if libxml2 is available])
else
AC_MSG_ERROR([Need libxml2 for glib2 builds -- you should be able to do without it -- this needs fixing])
fi
dnl this is for the .pc file
LIBXML_PKG=', libxml-2.0'
AC_SUBST(LIBXML_PKG)
AC_SUBST(XML_LIBS)
AC_SUBST(XML_CFLAGS)
dnl XML_LIBS might pull in -lz without zlib actually being on the system, so
dnl try linking with these LIBS and CFLAGS
ac_save_CFLAGS=$CFLAGS
ac_save_LIBS=$LIBS
CFLAGS="$CFLAGS $XML_CFLAGS"
LIBS="$LIBS $XML_LIBS"
AC_TRY_LINK([
#include <libxml/tree.h>
#include <stdio.h>
],[
/* function body */
],
AC_MSG_NOTICE([Test xml2 program linked]),
AC_MSG_ERROR([Could not link libxml2 test program. Check if you have the necessary dependencies.])
)
CFLAGS="$ac_save_CFLAGS"
LIBS="$ac_save_LIBS"
])
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