更新

build/drone_interfaces/drone_interfaces__py/CMakeLists.txt

@@ -0,0 +1,41 @@
+# Copyright 2016 Open Source Robotics Foundation, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Unlike other generators, this custom command depends on the target
+# ${rosidl_generate_interfaces_TARGET} and not the IDL files.
+# The IDL files could be generated files,as they are for .action files.
+# CMake does not allow `add_custom_command()` to depend on files generated in
+# a different CMake subdirectory, and this command is invoked after an
+# add_subdirectory() call.
+add_custom_command(
+  OUTPUT ${_generated_extension_files} ${_generated_py_files} ${_generated_c_files}
+  COMMAND ${PYTHON_EXECUTABLE} ${rosidl_generator_py_BIN}
+  --generator-arguments-file "${generator_arguments_file}"
+  --typesupport-impls "${_typesupport_impls}"
+  DEPENDS ${target_dependencies} ${rosidl_generate_interfaces_TARGET}
+  COMMENT "Generating Python code for ROS interfaces"
+  VERBATIM
+)
+
+if(TARGET ${rosidl_generate_interfaces_TARGET}${_target_suffix})
+  message(WARNING "Custom target ${rosidl_generate_interfaces_TARGET}${_target_suffix} already exists")
+else()
+  add_custom_target(
+    ${rosidl_generate_interfaces_TARGET}${_target_suffix}
+    DEPENDS
+    ${_generated_extension_files}
+    ${_generated_py_files}
+    ${_generated_c_files}
+  )
+endif()