optional build with libxml2

configure.ac

@@ -90,8 +90,9 @@ AC_ARG_ENABLE(included_agg,
         [  --enable-included-agg=[no/yes]        enables included libagg build (default=yes)],,
                  enable_included_agg=yes)
 
+AM_CONDITIONAL(BUILD_AGG, test "x$enable_included_agg" = "xyes")
+
 if [ test "x$enable_included_agg" = "xyes"]; then
-  AM_CONDITIONAL(BUILD_AGG, test "x$enable_included_agg" = "xyes")
   AGG_LIBS=-L../agg/src
   AGG_CFLAGS=-I../agg/include
   AC_SUBST(AGG_LIBS)
@@ -103,6 +104,22 @@ else
   PKG_CHECK_MODULES(AGG, libagg)
 fi
 
+
+dnl Check for option to enable libxml2
+AC_MSG_CHECKING(whether to enable included libxml2 building)
+AC_ARG_ENABLE(libxml2,
+        [  --enable-libxml2=[no/yes]        enables included libxml2 build (default=no)],,
+                 enable_libxml2=no)
+
+AM_CONDITIONAL(HAVE_LIBXML2, test "x$enable_libxml2" = "xyes")
+
+if [ test "x$enable_libxml2" = "xyes"]; then
+  AC_MSG_RESULT(yes)
+  PKG_CHECK_MODULES(LIBXML2, libxml-2.0)
+else
+  AC_MSG_RESULT(no)
+fi
+
 AC_OUTPUT([
 Makefile
 include/Makefile

include/mapnik/Makefile.am

@@ -1,6 +1,11 @@
 
 libmapnikdir = $(pkgincludedir)
 
+if HAVE_LIBXML2
+libxml2_inc = \
+  libxml2_loader.hpp
+endif
+
 libmapnik_HEADERS = \
 	agg_renderer.hpp\
 	attribute.hpp \
@@ -10,6 +15,7 @@ libmapnik_HEADERS = \
 	color_factory.hpp \
 	comparison.hpp \
 	config.hpp \
+  config_error.hpp \
 	coord.hpp \
 	coord_array.hpp \
 	css_color_parser.hpp \
@@ -18,6 +24,7 @@ libmapnik_HEADERS = \
 	datasource_cache.hpp \
 	distance.hpp \
 	ellipsoid.hpp \
+  enumeration.hpp \
 	envelope.hpp \
 	expression.hpp \
 	factory.hpp \
@@ -48,6 +55,7 @@ libmapnik_HEADERS = \
 	label_collision_detector.hpp \
 	label_placement.hpp \
 	layer.hpp \
+  ${libxml2_inc} \
 	line_pattern_symbolizer.hpp \
 	line_symbolizer.hpp \
 	load_map.hpp \
@@ -67,6 +75,7 @@ libmapnik_HEADERS = \
 	pool.hpp \
 	projection.hpp \
 	proj_transform.hpp \
+  ptree_helpers.hpp \
 	quad_tree.hpp \
 	query.hpp \
 	raster.hpp \

include/mapnik/map.hpp

@@ -24,6 +24,10 @@
 #ifndef MAP_HPP
 #define MAP_HPP
 
+#ifdef HAVE_CONFIG_H
+  #include <config.h>
+#endif
+
 #include <mapnik/feature_type_style.hpp>
 #include <mapnik/datasource.hpp>
 #include <mapnik/layer.hpp>

src/Makefile.am

@@ -14,6 +14,11 @@ AM_CXXFLAGS =\
 lib_LTLIBRARIES = \
 	libmapnik.la
 
+if HAVE_LIBXML2
+libxml2_src = \
+  libxml2_loader.cpp
+endif
+
 libmapnik_la_SOURCES = \
 	agg_renderer.cpp\
 	datasource_cache.cpp \
@@ -25,6 +30,7 @@ libmapnik_la_SOURCES = \
 	image_reader.cpp \
 	image_util.cpp \
 	layer.cpp \
+  ${libxml2_src} \
 	line_pattern_symbolizer.cpp \
 	load_map.cpp \
 	map.cpp \
@@ -41,10 +47,13 @@ libmapnik_la_SOURCES = \
 	save_map.cpp \
 	scale_denominator.cpp \
 	shield_symbolizer.cpp \
+  stroke.cpp \
+  symbolizer.cpp \
 	text_symbolizer.cpp \
 	tiff_reader.cpp \
 	wkb.cpp
   
+
 libmapnik_la_LIBADD = \
 	${PNG_LIBS} \
   ${FREETYPE2_LIBS} \
@@ -56,7 +65,8 @@ libmapnik_la_LIBADD = \
   ${JPEG_LIBS} \
   ${TIFF_LIBS} \
   ${PROJ_LIBS} \
-  ${LTDL_LIBS}
+  ${LTDL_LIBS} \
+  ${LIBXML2_LIBS}
 
 libmapnik_la_CXXFLAGS = \
   -I../include        \
@@ -67,7 +77,8 @@ libmapnik_la_CXXFLAGS = \
   ${TIFF_CFLAGS} \
   ${PROJ_CFLAGS} \
   ${LTDL_CFLAGS} \
-  ${BOOST_CPPFLAGS}
+  ${BOOST_CPPFLAGS} \
+  ${LIBXML2_CFLAGS}