COMP: no need for MuParser from external project. headers are hidden in otbParser.cxx

CMake/UseOTB.cmake.in

@@ -152,20 +152,15 @@ IF(OTB_USE_PQXX)
 ENDIF(OTB_USE_PQXX)
 
 IF(OTB_USE_EXTERNAL_LIBKML)
-  FIND_PACKAGE(LibKML)
+  FIND_PACKAGE(LibKML REQUIRED)
   INCLUDE_DIRECTORIES(${LIBKML_INCLUDE_DIRS})
 ENDIF(OTB_USE_EXTERNAL_LIBKML)
 
 IF(OTB_USE_EXTERNAL_TINYXML)
-  FIND_PACKAGE(TinyXML)
+  FIND_PACKAGE(TinyXML REQUIRED)
   INCLUDE_DIRECTORIES(${TINYXML_INCLUDE_DIRS})
 ENDIF(OTB_USE_EXTERNAL_TINYXML)
 
-IF(OTB_USE_EXTERNAL_MUPARSER)
-  FIND_PACKAGE(MuParser)
-  INCLUDE_DIRECTORIES(${MUPARSER_INCLUDE_DIR})
-ENDIF(OTB_USE_EXTERNAL_MUPARSER)
-
 IF(OTB_USE_MAPNIK)
         FIND_PATH(MAPNIK_INCLUDE_DIR mapnik/map.hpp PATHS)
         MARK_AS_ADVANCED(MAPNIK_INCLUDE_DIR)