upgrading xerces build

git-svn-id: svn+ssh://svn.cern.ch/reps/lcgsoft/trunk/lcgcmake@7271 4525493e-7705-40b1-a816-d608a930855b

externals/CMakeLists.txt

@@ -425,8 +425,8 @@ LCGPackage_Add(
   XercesC
   URL http://service-spi.web.cern.ch/service-spi/external/tarFiles/xerces-c-<XercesC_<NATIVE_VERSION>_author>.tar.gz
   CONFIGURE_COMMAND <SOURCE_DIR>/configure --prefix=<INSTALL_DIR> ${xerces_config_opts}
-  BUILD_COMMAND <VOID>
-  INSTALL_COMMAND make install
+#  BUILD_COMMAND make
+#  INSTALL_COMMAND make install
   BUILD_IN_SOURCE 1 
 )