perl-xml-libxml: fix build

see http://autobuild.buildroot.net/results/f80/f809c99ce4db80e64ca46865fcd9b75b0dcc1fcd/

Signed-off-by: Francois Perrad <francois.perrad@gadz.org>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/perl-xml-libxml/perl-xml-libxml-01-Makefile-PL.patch

@@ -0,0 +1,18 @@
+fake check_lib for cross-compilation
+
+Signed-off-by: Francois Perrad <francois.perrad@gadz.org>
+
+Index: b/Makefile.PL
+===================================================================
+--- a/Makefile.PL
++++ b/Makefile.PL
+@@ -84,8 +84,7 @@
+ # -------------------------------------------------------------------------- #
+ # -------------------------------------------------------------------------- #
+ 
+-use lib qw(inc);
+-use Devel::CheckLib;
++sub check_lib { return 1; }
+ 
+ # Prompt the user here for any paths and other configuration
+ 

package/perl-xml-libxml/perl-xml-libxml.mk

@@ -11,4 +11,9 @@ PERL_XML_LIBXML_DEPENDENCIES = perl zlib libxml2 perl-xml-sax perl-xml-namespace
 PERL_XML_LIBXML_LICENSE = Artistic or GPLv1+
 PERL_XML_LIBXML_LICENSE_FILES = LICENSE
 
+PERL_XML_LIBXML_CONF_OPT = \
+	LIBS="-L $(STAGING_DIR)/usr/lib" \
+	INC="-I $(STAGING_DIR)/usr/include/libxml2" \
+	NO_THREADS
+
 $(eval $(perl-package))