compile pb.cc only once

CMakeLists.txt

@@ -113,37 +113,6 @@ set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
 # for *.a
 set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
 
-file(GLOB PROTOS "${CMAKE_SOURCE_DIR}/src/*.proto")
-list(APPEND PROTO_FLAGS -I${CMAKE_CURRENT_BINARY_DIR})
-foreach(PROTO ${PROTOS})
-    get_filename_component(PROTO_WE ${PROTO} NAME_WE)
-    list(APPEND PROTO_SRCS "${CMAKE_CURRENT_BINARY_DIR}/${PROTO_WE}.pb.cc")
-    execute_process(
-        COMMAND ${PROTOBUF_PROTOC_EXECUTABLE} ${PROTO_FLAGS} --cpp_out=${CMAKE_CURRENT_BINARY_DIR} --proto_path=${PROTOBUF_INCLUDE_DIR} --proto_path=${CMAKE_SOURCE_DIR}/src ${PROTO}
-        WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
-    )
-endforeach()
-
-file(GLOB BRPC_PROTOS "src/brpc/*.proto")
-foreach(PROTO ${BRPC_PROTOS})
-    get_filename_component(PROTO_WE ${PROTO} NAME_WE)
-    list(APPEND PROTO_SRCS "${CMAKE_CURRENT_BINARY_DIR}/brpc/${PROTO_WE}.pb.cc")
-    execute_process(
-        COMMAND ${PROTOBUF_PROTOC_EXECUTABLE} ${PROTO_FLAGS} --cpp_out=${CMAKE_CURRENT_BINARY_DIR} --proto_path=${PROTOBUF_INCLUDE_DIR} --proto_path=${CMAKE_SOURCE_DIR}/src --proto_path=${CMAKE_SOURCE_DIR}/src/brpc/ ${PROTO}
-        WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
-    )
-endforeach()
-
-file(GLOB BRPC_POLICY_PROTOS "src/brpc/policy/*.proto")
-foreach(PROTO ${BRPC_POLICY_PROTOS})
-    get_filename_component(PROTO_WE ${PROTO} NAME_WE)
-    list(APPEND PROTO_SRCS "${CMAKE_CURRENT_BINARY_DIR}/brpc/policy/${PROTO_WE}.pb.cc")
-    execute_process(
-        COMMAND ${PROTOBUF_PROTOC_EXECUTABLE} ${PROTO_FLAGS} --cpp_out=${CMAKE_CURRENT_BINARY_DIR} --proto_path=${PROTOBUF_INCLUDE_DIR} --proto_path=${CMAKE_SOURCE_DIR}/src --proto_path=${CMAKE_SOURCE_DIR}/src/brpc/policy ${PROTO}
-        WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
-    )
-endforeach()
-
 # list all source files
 set(BUTIL_SOURCES
     ${CMAKE_SOURCE_DIR}/src/butil/third_party/dmg_fp/g_fmt.cc
@@ -274,6 +243,37 @@ set(MCPACK2PB_SOURCES
     ${CMAKE_SOURCE_DIR}/src/mcpack2pb/serializer.cpp
     )
 
+file(GLOB PROTOS "${CMAKE_SOURCE_DIR}/src/*.proto")
+list(APPEND PROTO_FLAGS -I${CMAKE_CURRENT_BINARY_DIR})
+foreach(PROTO ${PROTOS})
+    get_filename_component(PROTO_WE ${PROTO} NAME_WE)
+    list(APPEND PROTO_SRCS "${CMAKE_CURRENT_BINARY_DIR}/${PROTO_WE}.pb.cc")
+    execute_process(
+        COMMAND ${PROTOBUF_PROTOC_EXECUTABLE} ${PROTO_FLAGS} --cpp_out=${CMAKE_CURRENT_BINARY_DIR} --proto_path=${PROTOBUF_INCLUDE_DIR} --proto_path=${CMAKE_SOURCE_DIR}/src ${PROTO}
+        WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
+    )
+endforeach()
+
+file(GLOB BRPC_PROTOS "src/brpc/*.proto")
+foreach(PROTO ${BRPC_PROTOS})
+    get_filename_component(PROTO_WE ${PROTO} NAME_WE)
+    list(APPEND PROTO_SRCS "${CMAKE_CURRENT_BINARY_DIR}/brpc/${PROTO_WE}.pb.cc")
+    execute_process(
+        COMMAND ${PROTOBUF_PROTOC_EXECUTABLE} ${PROTO_FLAGS} --cpp_out=${CMAKE_CURRENT_BINARY_DIR} --proto_path=${PROTOBUF_INCLUDE_DIR} --proto_path=${CMAKE_SOURCE_DIR}/src --proto_path=${CMAKE_SOURCE_DIR}/src/brpc/ ${PROTO}
+        WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
+    )
+endforeach()
+
+file(GLOB BRPC_POLICY_PROTOS "src/brpc/policy/*.proto")
+foreach(PROTO ${BRPC_POLICY_PROTOS})
+    get_filename_component(PROTO_WE ${PROTO} NAME_WE)
+    list(APPEND PROTO_SRCS "${CMAKE_CURRENT_BINARY_DIR}/brpc/policy/${PROTO_WE}.pb.cc")
+    execute_process(
+        COMMAND ${PROTOBUF_PROTOC_EXECUTABLE} ${PROTO_FLAGS} --cpp_out=${CMAKE_CURRENT_BINARY_DIR} --proto_path=${PROTOBUF_INCLUDE_DIR} --proto_path=${CMAKE_SOURCE_DIR}/src --proto_path=${CMAKE_SOURCE_DIR}/src/brpc/policy ${PROTO}
+        WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
+    )
+endforeach()
+
 set(SOURCES
     ${BVAR_SOURCES}
     ${BTHREAD_SOURCES}