changed pymod macro to compile python files

Instead of copying the python files to stage the pymod macro now compiles
the python files and put the compiled version into stage.
Compiling of the python files allows catching of syntax errors at the
make step. In addition it speeds up module loading times for the
first import.

cmake_support/OST.cmake

@@ -393,6 +393,27 @@ macro(ui_to_python module out_files)
   endforeach()
 endmacro()
 
+#-------------------------------------------------------------------------------
+# Synopsis:
+#   compile_py_files(module out_files [input_file1 ...])
+# Description:
+#   Calls pyuic on every input file. The resulting python files are stored in
+#   the variable with name out_files.
+#-------------------------------------------------------------------------------
+macro(compile_py_files module out_dir)
+  set(_input_files ${ARGN})
+  foreach(input_file ${_input_files})
+    get_filename_component(_out_file ${input_file} NAME_WE)
+    get_filename_component(_in_file ${input_file} ABSOLUTE)
+    set(_out_file ${out_dir}/${_out_file}.pyc)
+    file(MAKE_DIRECTORY  ${out_dir})
+    add_custom_command(TARGET ${module}
+                       COMMAND ${PYTHON_BINARY} -c "import py_compile;py_compile.compile(\"${_in_file}\",\"${_out_file}\",doraise=True)"
+                       VERBATIM DEPENDS ${input_file}
+                       )
+  endforeach()
+endmacro()
+
 #-------------------------------------------------------------------------------
 # Synopsis:
 #   pymod(NAME name CPP source1 source2 PY source source2 [IN_DIR dir] 
@@ -494,9 +515,10 @@ macro(pymod)
                   "${LIB_DIR}/${PYMOD_DIR}/${_DIR}")
           string(REPLACE "/" "_" _DIR_NO_SLASH "${_DIR}")
           add_custom_target("${_ARG_NAME}_${_DIR_NO_SLASH}_pymod" ALL)
-          copy_if_different("./" "${PYMOD_STAGE_DIR}/${_DIR}" 
-                            "${_ABS_PY_FILES}" "TARGETS"
-                            "${_ARG_NAME}_${_DIR_NO_SLASH}_pymod")
+          #copy_if_different("./" "${PYMOD_STAGE_DIR}/${_DIR}"
+          #                  "${_ABS_PY_FILES}" "TARGETS"
+          #                  "${_ARG_NAME}_${_DIR_NO_SLASH}_pymod")
+          compile_py_files(_${_LIB_NAME} ${PYMOD_STAGE_DIR}/${_DIR} ${_ABS_PY_FILES})
           set(_PY_FILES)
         else()
           list(APPEND _PY_FILES "${_PY_FILE}")
@@ -508,9 +530,10 @@ macro(pymod)
       if (_ARG_UI)
         add_dependencies("${_LIB_NAME}_pymod" "${_LIB_NAME}_ui"})
       endif()
-      copy_if_different("./" "${PYMOD_STAGE_DIR}" "${_PY_FILES}" "TARGETS"
-                        "${_LIB_NAME}_pymod")
-      add_dependencies("_${_LIB_NAME}" "${_LIB_NAME}_pymod")
+      #copy_if_different("./" "${PYMOD_STAGE_DIR}" "${_PY_FILES}" "TARGETS"
+      #                  "${_LIB_NAME}_pymod")
+      #add_dependencies("_${_LIB_NAME}" "${_LIB_NAME}_pymod")
+      compile_py_files(_${_LIB_NAME} ${PYMOD_STAGE_DIR} ${_PY_FILES})
       include_directories(${PYTHON_INCLUDE_PATH})
       install(FILES ${_PY_FILES} DESTINATION "${LIB_DIR}/${PYMOD_DIR}")
       endif()