keep compiled files between compiles, make distclean

CMakeLists.txt

@@ -334,16 +334,13 @@ endif()
 # CMAKE_CURRENT_BINARY_DIR is used by swig module for put wrappers on, so don't erase this line!
 set(CMAKE_CURRENT_BINARY_DIR ${PROJECT_BUILD_TEMP_DIR})
 
+
 #
-# Clean directories before generate files
+# Prepare directory structure
 #
-# Clean '/build/release'
-execute_process(COMMAND ${CMAKE_COMMAND} -E remove_directory ${PROJECT_BUILD_RELEASE_DIR})
 execute_process(COMMAND ${CMAKE_COMMAND} -E make_directory ${PROJECT_BUILD_RELEASE_DIR}/include)
 execute_process(COMMAND ${CMAKE_COMMAND} -E make_directory ${PROJECT_BUILD_RELEASE_DIR}/lib)
 execute_process(COMMAND ${CMAKE_COMMAND} -E make_directory ${PROJECT_BUILD_RELEASE_DIR}/bin)
-# Clean '/build/temp'
-execute_process(COMMAND ${CMAKE_COMMAND} -E remove_directory ${PROJECT_BUILD_TEMP_DIR})
 execute_process(COMMAND ${CMAKE_COMMAND} -E make_directory ${PROJECT_BUILD_TEMP_DIR}/lib)
 execute_process(COMMAND ${CMAKE_COMMAND} -E make_directory ${PROJECT_BUILD_TEMP_DIR}/obj)
 
@@ -858,7 +855,6 @@ copy_file(${PROJECT_SOURCE_DIR}/bin/run_swarm.py ${PROJECT_BUILD_RELEASE_DIR}/bi
 copy_directory(${PROJECT_SOURCE_DIR}/external/licenses ${PROJECT_BUILD_RELEASE_DIR}/share/doc/licenses)
 copy_file(${PROJECT_SOURCE_DIR}/conf/default/nupic-default.xml ${PROJECT_BUILD_RELEASE_DIR}/conf/default/nupic-default.xml)
 copy_file(${PROJECT_SOURCE_DIR}/conf/default/nupic-logging.conf ${PROJECT_BUILD_RELEASE_DIR}/conf/default/nupic-logging.conf)
-copy_file(${PROJECT_SOURCE_DIR}/env.sh ${PROJECT_BUILD_RELEASE_DIR}/env.sh)
 
 # Copy python API and regions
 copy_file(${PROJECT_SOURCE_DIR}/lang/py/__init__.py ${PYTHON_SITE_PACKAGES_DIR}/nupic/__init__.py)
@@ -904,6 +900,20 @@ add_custom_target(tests_all
                   DEPENDS tests_everything
                   COMMENT "Running all tests")
 
+#
+# Clean
+#
+add_custom_target(distclean 
+		# Clean '/build/release' and build/temp
+		COMMAND ${CMAKE_COMMAND} -E remove_directory ${PROJECT_BUILD_RELEASE_DIR}
+		COMMAND ${CMAKE_COMMAND} -E remove_directory ${PROJECT_BUILD_TEMP_DIR}
+		# recreate folders
+		COMMAND ${CMAKE_COMMAND} -E make_directory ${PROJECT_BUILD_RELEASE_DIR}/include
+		COMMAND ${CMAKE_COMMAND} -E make_directory ${PROJECT_BUILD_RELEASE_DIR}/lib
+		COMMAND ${CMAKE_COMMAND} -E make_directory ${PROJECT_BUILD_RELEASE_DIR}/bin
+		COMMAND ${CMAKE_COMMAND} -E make_directory ${PROJECT_BUILD_TEMP_DIR}/lib
+		COMMAND ${CMAKE_COMMAND} -E make_directory ${PROJECT_BUILD_TEMP_DIR}/obj
+		COMMENT "Cleaning temporary & release build files")
 
 # Just to separate from result message
 message(STATUS "")

README.md

@@ -72,6 +72,7 @@ Set the following environment variables in your `~/.bashrc` file. `$NUPIC` is th
 #### Build:
 
     cd $NUPIC/build/scripts
+    (optional) make clean / distclean   # to compile all the files again
     make -j3
 
 > **Note**: -j3 option specify '3' as the maximum number of parallel jobs/threads that Make will use during the build in order to gain speed. However, you can increase this number depending your CPU.