Index: lib/MsgUtils/cmake/MsgUtils.cmake
===================================================================
diff -u -rfde01bd195d14da4c7a68f4e137c8ffb60094c73 -r864d025811eb43fd2592bde174e5cb41fa10d783
--- lib/MsgUtils/cmake/MsgUtils.cmake	(.../MsgUtils.cmake)	(revision fde01bd195d14da4c7a68f4e137c8ffb60094c73)
+++ lib/MsgUtils/cmake/MsgUtils.cmake	(.../MsgUtils.cmake)	(revision 864d025811eb43fd2592bde174e5cb41fa10d783)
@@ -37,7 +37,7 @@
             ${_header_path}
             ${_source_path}
         COMMAND
-            ${Python3_EXECUTABLE} ${MSGUTILS_SCRIPTS_DIR}/GenerateMsgDefsCpp.py
+            ${MSGUTILS_PYTHON} ${MSGUTILS_SCRIPTS_DIR}/GenerateMsgDefsCpp.py
                 --namespace ${_namespace}
                 --header_dir ${_header_dir}
                 --source_dir ${_source_dir}
@@ -79,7 +79,7 @@
         OUTPUT
             ${_protobuf_abs_filename}
         COMMAND
-            ${Python3_EXECUTABLE} ${MSGUTILS_SCRIPTS_DIR}/GenerateProtobuf.py
+            ${MSGUTILS_PYTHON} ${MSGUTILS_SCRIPTS_DIR}/GenerateProtobuf.py
                 --namespace ${_namespace}
                 --output_dir ${_output_path}
                 ${${_input_confs}}
@@ -128,7 +128,7 @@
             ${_header_path}
             ${_source_path}
         COMMAND
-            ${Python3_EXECUTABLE} ${MSGUTILS_SCRIPTS_DIR}/GenerateMsgDefsCpp.py
+            ${MSGUTILS_PYTHON} ${MSGUTILS_SCRIPTS_DIR}/GenerateMsgDefsCpp.py
                 --namespace ${_namespace}
                 --header_dir ${_header_dir}
                 --source_dir ${_source_dir}
@@ -170,7 +170,7 @@
         OUTPUT
             ${_protobuf_abs_filename}
         COMMAND
-            ${Python3_EXECUTABLE} ${MSGUTILS_SCRIPTS_DIR}/GenerateProtobuf.py
+            ${MSGUTILS_PYTHON} ${MSGUTILS_SCRIPTS_DIR}/GenerateProtobuf.py
                 --namespace ${_namespace}
                 --output_dir ${_output_path}
                 ${${_input_csvs}}