ENH: gives the possibility to use the boost library installed on the system

CMakeLists.txt

@@ -312,6 +312,19 @@ IF(OTB_USE_CURL)
 
 ENDIF(OTB_USE_CURL)
 
+#-------------------------------
+# Boost Library
+#-------------------------------
+
+# Option for internal/external BOOST
+OPTION(OTB_USE_EXTERNAL_BOOST "Use an outside build of Boost." OFF)
+MARK_AS_ADVANCED(OTB_USE_EXTERNAL_BOOST)
+
+IF(OTB_USE_EXTERNAL_BOOST)
+  FIND_PACKAGE(Boost)
+  INCLUDE_DIRECTORIES(${Boost_INCLUDE_DIR})
+ENDIF(OTB_USE_EXTERNAL_BOOST)
+
 #-------------------------------
 # GDAL Library
 #-------------------------------

Utilities/CMakeLists.txt

@@ -25,8 +25,12 @@ IF(NOT OTB_USE_EXTERNAL_EXPAT)
 	SUBDIRS( otbexpat )
 ENDIF(NOT OTB_USE_EXTERNAL_EXPAT)
 
+IF(NOT OTB_USE_EXTERNAL_BOOST)
+  SUBDIRS(BGL)
+ENDIF(NOT OTB_USE_EXTERNAL_BOOST)
 
-SUBDIRS(BGL otbsvm dxflib InsightJournal otbossim otbossimplugins otb6S tinyXMLlib otbkml otbliblas otbedison otbsiftfast)
+
+SUBDIRS(otbsvm dxflib InsightJournal otbossim otbossimplugins otb6S tinyXMLlib otbkml otbliblas otbedison otbsiftfast)
 
 IF(BUILD_TESTING)
         SUBDIRS( Dart )

otbIncludeDirectories.cmake

@@ -247,6 +247,12 @@ IF(OTB_USE_CURL)
   	${CURL_INCLUDE_DIR} )
 ENDIF(OTB_USE_CURL)
 
+#For BOOST header file
+IF(OTB_USE_BOOST)
+  SET(OTB_INCLUDE_DIRS_INSTALL_TREE ${OTB_INCLUDE_DIRS_INSTALL_TREE}
+  	${Boost_INCLUDE_DIR} )
+ENDIF(OTB_USE_BOOST)
+
 # For OpentTreads  header file
 IF(NOT OTB_USE_EXTERNAL_OPENTHREADS)
         SET(OTB_INCLUDE_DIRS_INSTALL_TREE ${OTB_INCLUDE_DIRS_INSTALL_TREE}