add the static analysis target with a quick explaination

04-static-analysis/cppcheck/cmake/analysis.cmake

@@ -0,0 +1,50 @@
+# Make sure cppcheck binary is available
+if( NOT CPPCHECK_FOUND )
+    find_package(CppCheck)
+endif()
+
+# add a target for CppCheck
+# _target - The name of the project that this is for. Will generate ${_target}_analysis 
+# _sources - The name of the variable holding the sources list. 
+#            This is the name of the variable not the actual list
+#
+# Macro instead of function to make the PARENT_SCOPE stuff easier
+macro(add_analysis _target _sources)
+    if( CPPCHECK_FOUND )
+
+        # Get the include files to also feed to cppcheck
+        get_property(dirs DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR} PROPERTY INCLUDE_DIRECTORIES)
+        foreach(dir ${dirs})
+            LIST(APPEND cppcheck_includes "-I${dir}")
+        endforeach()
+
+        # Add to the all target to have a high level "make analysis"
+        LIST(APPEND ALL_ANALYSIS_TARGETS "${_target}_analysis")
+        set(ALL_ANALYSIS_TARGETS "${ALL_ANALYSIS_TARGETS}" PARENT_SCOPE)
+
+        # This is used to make the command run correctly on the command line.
+        # The COMMAND argumetn expects a list and this does the change
+        # I need to check which version works with 2.7
+        if (${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VESION} GREATER 2.7)
+            separate_arguments(tmp_args UNIX_COMMAND ${CPPCHECK_ARG})
+        else ()
+            # cmake 2.6 has different arguments 
+            string(REPLACE " " ";" tmp_args ${CPPCHECK_ARG})         
+        endif ()
+
+        # add a custom _target_analysis target
+        add_custom_target(${_target}_analysis)
+        set_target_properties(${_target}_analysis PROPERTIES EXCLUDE_FROM_ALL TRUE)
+        
+        # add the cppcheck command to the target
+        add_custom_command(TARGET ${_target}_analysis PRE_BUILD
+            WORKING_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}"
+            COMMAND ${CPPCHECK_BIN} ${tmp_args} ${cppcheck_includes} ${${_sources}}
+            DEPENDS ${${_sources}}
+            COMMENT "Running cppcheck: ${_target}"
+            VERBATIM)
+        message("adding cppcheck analysys target for ${_target}")
+    endif()
+
+endmacro()
+