From dc7ce39f59d62bab29907d416c0c55fd8cfe3ada Mon Sep 17 00:00:00 2001
From: Yi Tang <ssnailtang@gmail.com>
Date: Tue, 27 Aug 2019 00:25:29 +0800
Subject: [PATCH] [pulsar-client-cpp] cmake isolate auto gen srcs (#5013)

---
 pulsar-client-cpp/.gitignore           |  7 +++----
 pulsar-client-cpp/CMakeLists.txt       |  4 ++++
 pulsar-client-cpp/lib/CMakeLists.txt   | 17 ++++++++++++-----
 pulsar-client-cpp/tests/CMakeLists.txt |  2 +-
 4 files changed, 20 insertions(+), 10 deletions(-)

diff --git a/pulsar-client-cpp/.gitignore b/pulsar-client-cpp/.gitignore
index dd09eb2dc8ccd..76efe8eca0922 100644
--- a/pulsar-client-cpp/.gitignore
+++ b/pulsar-client-cpp/.gitignore
@@ -59,9 +59,8 @@ lib*.so*
 # doxygen files
 apidocs/
 
-# Protobuf generated files
-*.pb.cc
-*.pb.h
+# generated files
+generated/
 
 # CMAKE
 Makefile
@@ -72,4 +71,4 @@ CMakeCache.txt
 pulsar-dist
 install_manifest.txt
 merged-library
-python/venv
\ No newline at end of file
+python/venv
diff --git a/pulsar-client-cpp/CMakeLists.txt b/pulsar-client-cpp/CMakeLists.txt
index 0cb2a24bbc988..6ee1f771f1e34 100644
--- a/pulsar-client-cpp/CMakeLists.txt
+++ b/pulsar-client-cpp/CMakeLists.txt
@@ -195,9 +195,13 @@ MESSAGE(STATUS "HAS_SNAPPY: ${HAS_SNAPPY}")
 set(ADDITIONAL_LIBRARIES $ENV{PULSAR_ADDITIONAL_LIBRARIES})
 link_directories( $ENV{PULSAR_ADDITIONAL_LIBRARY_PATH} )
 
+set(AUTOGEN_DIR ${CMAKE_BINARY_DIR}/generated)
+file(MAKE_DIRECTORY ${AUTOGEN_DIR})
+
 include_directories(
   ${CMAKE_SOURCE_DIR}
   ${CMAKE_SOURCE_DIR}/include
+  ${AUTOGEN_DIR}
   ${Boost_INCLUDE_DIR}
   ${OPENSSL_INCLUDE_DIR}
   ${ZLIB_INCLUDE_DIRS}
diff --git a/pulsar-client-cpp/lib/CMakeLists.txt b/pulsar-client-cpp/lib/CMakeLists.txt
index c780d3338f015..cb77b172e15b8 100644
--- a/pulsar-client-cpp/lib/CMakeLists.txt
+++ b/pulsar-client-cpp/lib/CMakeLists.txt
@@ -25,11 +25,18 @@ set (CMAKE_CXX_FLAGS " ${CMAKE_CXX_FLAGS} -D_PULSAR_VERSION_=\\\"${PV}\\\"")
 if (NOT PROTOC_PATH)
     set(PROTOC_PATH protoc)
 endif()
+
+set(LIB_AUTOGEN_DIR ${AUTOGEN_DIR}/lib)
+file(MAKE_DIRECTORY ${LIB_AUTOGEN_DIR})
+include_directories(${LIB_AUTOGEN_DIR})
+
 # Protobuf generation is only supported natively starting from CMake 3.8
 # Using custom command for now
+set(PROTO_SOURCES ${LIB_AUTOGEN_DIR}/PulsarApi.pb.cc ${LIB_AUTOGEN_DIR}/PulsarApi.pb.h)
+set(PULSAR_SOURCES ${PULSAR_SOURCES} ${PROTO_SOURCES})
 ADD_CUSTOM_COMMAND(
-         OUTPUT ${CMAKE_SOURCE_DIR}/lib/PulsarApi.pb.h ${CMAKE_SOURCE_DIR}/lib/PulsarApi.pb.cc
-         COMMAND ${PROTOC_PATH} -I ../../pulsar-common/src/main/proto ../../pulsar-common/src/main/proto/PulsarApi.proto --cpp_out=${CMAKE_SOURCE_DIR}/lib
+         OUTPUT ${PROTO_SOURCES}
+         COMMAND ${PROTOC_PATH} -I ../../pulsar-common/src/main/proto ../../pulsar-common/src/main/proto/PulsarApi.proto --cpp_out=${LIB_AUTOGEN_DIR}
          DEPENDS
          ../../pulsar-common/src/main/proto/PulsarApi.proto
          WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})
@@ -50,11 +57,11 @@ if (WIN32)
     string(APPEND LIB_NAME_SHARED dll)
 endif()
 
-add_library(pulsarShared SHARED ${PULSAR_SOURCES} PulsarApi.pb.h PulsarApi.pb.cc)
+add_library(pulsarShared SHARED ${PULSAR_SOURCES})
 set_target_properties(pulsarShared PROPERTIES OUTPUT_NAME ${LIB_NAME_SHARED} VERSION ${LIBRARY_VERSION})
 target_link_libraries(pulsarShared ${COMMON_LIBS} ${CMAKE_DL_LIBS})
 
-add_library(pulsarStatic STATIC ${PULSAR_SOURCES} PulsarApi.pb.h PulsarApi.pb.cc)
+add_library(pulsarStatic STATIC ${PULSAR_SOURCES})
 set_target_properties(pulsarStatic PROPERTIES OUTPUT_NAME ${LIB_NAME} VERSION ${LIBRARY_VERSION})
 target_compile_definitions(pulsarStatic PRIVATE PULSAR_STATIC)
 
@@ -84,7 +91,7 @@ if (LINK_STATIC)
             set(${OUTLIST} ${TEMP_OUT} PARENT_SCOPE)
         endfunction(remove_libtype)
 
-        add_library(pulsarStaticWithDeps STATIC ${PULSAR_SOURCES} PulsarApi.pb.h PulsarApi.pb.cc)
+        add_library(pulsarStaticWithDeps STATIC ${PULSAR_SOURCES})
         target_include_directories(pulsarStaticWithDeps PRIVATE ${dlfcn-win32_INCLUDE_DIRS})
         remove_libtype("${COMMON_LIBS}" "optimized" DEBUG_STATIC_LIBS)
         remove_libtype("${COMMON_LIBS}" "debug" STATIC_LIBS)
diff --git a/pulsar-client-cpp/tests/CMakeLists.txt b/pulsar-client-cpp/tests/CMakeLists.txt
index 2c58ed72df04c..8b5a09d11cbe9 100644
--- a/pulsar-client-cpp/tests/CMakeLists.txt
+++ b/pulsar-client-cpp/tests/CMakeLists.txt
@@ -32,6 +32,6 @@ file(GLOB TEST_SOURCES *.cc)
 
 add_executable(main ${TEST_SOURCES})
 
-target_include_directories(main PRIVATE ${CMAKE_SOURCE_DIR}/lib)
+target_include_directories(main PRIVATE ${CMAKE_SOURCE_DIR}/lib ${AUTOGEN_DIR}/lib)
 
 target_link_libraries(main ${CLIENT_LIBS} pulsarShared $<$<CONFIG:Debug>:${GMOCKD_LIBRARY_PATH}> $<$<CONFIG:Debug>:${GTESTD_LIBRARY_PATH}> $<$<NOT:$<CONFIG:Debug>>:${GMOCK_LIBRARY_PATH}> $<$<NOT:$<CONFIG:Debug>>:${GTEST_LIBRARY_PATH}>)