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# LLNL_FIND_LIBXML
#
#
AC_DEFUN([VERSION_TO_NUMBER],
[`$1 | sed -e 's/libxml //' | awk 'BEGIN { FS = "."; } { printf "%d", ([$]1 * 1000 + [$]2) * 1000 + [$]3;}'`])
AC_DEFUN([LLNL_LIBXML_CONFIG],
[LIBXML_REQUIRED_VERSION=2.4.0
AC_ARG_WITH([libxml2],
[AS_HELP_STRING(--with-libxml2@<:@=DIR@:>@,use libxml2 in @<:@DIR@:>@ (YES if found))],,[withval=maybe])
dnl if the user explicitly asked for no libxml2 (Babel requires it)
if test "$withval" != "no"; then
dnl find xml2-config program
XML2_CONFIG="no"
if test "$withval" != "yes" && test "$withval" != "maybe" ; then
XML2_CONFIG_PATH="$withval/bin"
AC_PATH_PROG(XML2_CONFIG, xml2-config,"no", $XML2_CONFIG_PATH)
else
XML2_CONFIG_PATH=$PATH
AC_PATH_PROG(XML2_CONFIG, xml2-config,"no", $XML2_CONFIG_PATH)
fi
dnl we can't do anything without xml2-config
if test "$XML2_CONFIG" = "no"; then
withval="no"
else
withval=`$XML2_CONFIG --prefix`
fi
dnl if withval still maybe then we have failed
if test "$withval" = "maybe"; then
withval="no"
fi
fi
if test "$withval" = "no"; then
XML2_CONFIG="no"
AC_MSG_WARN(You need libxml2 $LIBXML_REQUIRED_VERSION (or later) for dynamic loading support in Babel)
else
AC_SUBST(LIBXML_REQUIRED_VERSION)
AC_MSG_CHECKING(for libxml libraries >= $LIBXML_REQUIRED_VERSION)
dnl
dnl test version and init our variables
dnl
vers=VERSION_TO_NUMBER([$XML2_CONFIG --version])
XML2_VERSION=`$XML2_CONFIG --version`
if test "$vers" -ge VERSION_TO_NUMBER([echo $LIBXML_REQUIRED_VERSION]); then
AC_MSG_RESULT(found version $XML2_VERSION)
if $XML2_CONFIG --libtool-libs | grep "^Usage:" 2>&1 > /dev/null; then
LIBXML2_LIB="`$XML2_CONFIG --libs`"
else
LIBXML2_LIB="`$XML2_CONFIG --libtool-libs`"
fi
LIBXML2_CFLAGS="`$XML2_CONFIG --cflags`"
AC_DEFINE(HAVE_LIBXML2,[1],[Libxml2 support included])
AC_DEFINE_UNQUOTED(LIBXML2_VERSION, $vers, [Version of libxml2 installed])
AC_SUBST(LIBXML2_LIB)
AC_SUBST(LIBXML2_CFLAGS)
else
AC_MSG_WARN(You need libxml2 $LIBXML_REQUIRED_VERSION (or later) for dynamic loading support in Babel)
XML2_CONFIG="no"
unset XML2_VERSION
fi
fi
])
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