# ****************************************************************************** # Copyright 2017-2018 Intel Corporation # # 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. # ****************************************************************************** # Enable ExternalProject CMake module include(ExternalProject) #------------------------------------------------------------------------------ # Download and install Google Protobuf ... #------------------------------------------------------------------------------ set(PROTOBUF_GIT_REPO_URL https://github.com/google/protobuf.git) set(PROTOBUF_GIT_BRANCH origin/3.5.x) # The 'BUILD_BYPRODUCTS' arguments was introduced in CMake 3.2. if (${CMAKE_VERSION} VERSION_LESS 3.2) ExternalProject_Add( ext_protobuf PREFIX protobuf GIT_REPOSITORY ${PROTOBUF_GIT_REPO_URL} GIT_TAG ${PROTOBUF_GIT_BRANCH} INSTALL_COMMAND "" UPDATE_COMMAND "" PATCH_COMMAND "" CONFIGURE_COMMAND ./autogen.sh && ./configure --disable-shared CXXFLAGS=-fPIC BUILD_COMMAND ${MAKE} TMP_DIR "${EXTERNAL_PROJECTS_ROOT}/protobuf/tmp" STAMP_DIR "${EXTERNAL_PROJECTS_ROOT}/protobuf/stamp" DOWNLOAD_DIR "${EXTERNAL_PROJECTS_ROOT}/protobuf/download" SOURCE_DIR "${EXTERNAL_PROJECTS_ROOT}/protobuf/src" BINARY_DIR "${EXTERNAL_PROJECTS_ROOT}/protobuf/src" INSTALL_DIR "${EXTERNAL_PROJECTS_ROOT}/protobuf" EXCLUDE_FROM_ALL TRUE ) else() if (${CMAKE_VERSION} VERSION_LESS 3.6) ExternalProject_Add( ext_protobuf PREFIX ext_protobuf GIT_REPOSITORY ${PROTOBUF_GIT_REPO_URL} GIT_TAG ${PROTOBUF_GIT_BRANCH} INSTALL_COMMAND "" UPDATE_COMMAND "" PATCH_COMMAND "" CONFIGURE_COMMAND ./autogen.sh && ./configure --disable-shared CXXFLAGS=-fPIC BUILD_COMMAND ${MAKE} TMP_DIR "${EXTERNAL_PROJECTS_ROOT}/protobuf/tmp" STAMP_DIR "${EXTERNAL_PROJECTS_ROOT}/protobuf/stamp" DOWNLOAD_DIR "${EXTERNAL_PROJECTS_ROOT}/protobuf/download" SOURCE_DIR "${EXTERNAL_PROJECTS_ROOT}/protobuf/src" BINARY_DIR "${EXTERNAL_PROJECTS_ROOT}/protobuf/src" INSTALL_DIR "${EXTERNAL_PROJECTS_ROOT}/protobuf" BUILD_BYPRODUCTS "${EXTERNAL_PROJECTS_ROOT}/protobuf/src/src/.libs/libprotobuf.a" EXCLUDE_FROM_ALL TRUE ) else() # To speed things up prefer 'shallow copy' for CMake 3.6 and later ExternalProject_Add( ext_protobuf PREFIX ext_protobuf GIT_REPOSITORY ${PROTOBUF_GIT_REPO_URL} GIT_TAG ${PROTOBUF_GIT_BRANCH} GIT_SHALLOW TRUE INSTALL_COMMAND "" UPDATE_COMMAND "" PATCH_COMMAND "" CONFIGURE_COMMAND ./autogen.sh && ./configure --disable-shared CXXFLAGS=-fPIC BUILD_COMMAND ${MAKE} TMP_DIR "${EXTERNAL_PROJECTS_ROOT}/protobuf/tmp" STAMP_DIR "${EXTERNAL_PROJECTS_ROOT}/protobuf/stamp" DOWNLOAD_DIR "${EXTERNAL_PROJECTS_ROOT}/protobuf/download" SOURCE_DIR "${EXTERNAL_PROJECTS_ROOT}/protobuf/src" BINARY_DIR "${EXTERNAL_PROJECTS_ROOT}/protobuf/src" INSTALL_DIR "${EXTERNAL_PROJECTS_ROOT}/protobuf" BUILD_BYPRODUCTS "${EXTERNAL_PROJECTS_ROOT}/protobuf/src/src/.libs/libprotobuf.a" EXCLUDE_FROM_ALL TRUE ) endif() endif() # ----------------------------------------------------------------------------- ExternalProject_Get_Property(ext_protobuf SOURCE_DIR BINARY_DIR) # ----------------------------------------------------------------------------- # Use the interface of FindProtobuf.cmake # ----------------------------------------------------------------------------- set(Protobuf_SRC_ROOT_FOLDER ${SOURCE_DIR}) set(Protobuf_PROTOC_EXECUTABLE ${Protobuf_SRC_ROOT_FOLDER}/src/protoc) set(Protobuf_INCLUDE_DIR ${Protobuf_SRC_ROOT_FOLDER}/src) set(Protobuf_LIBRARY ${Protobuf_SRC_ROOT_FOLDER}/src/.libs/libprotobuf.a) set(Protobuf_LIBRARIES ${Protobuf_LIBRARY}) if (NOT TARGET protobuf::libprotobuf) add_library(protobuf::libprotobuf UNKNOWN IMPORTED) set_target_properties(protobuf::libprotobuf PROPERTIES INTERFACE_INCLUDE_DIRECTORIES "${Protobuf_INCLUDE_DIR}" IMPORTED_LOCATION "${Protobuf_LIBRARY}") add_dependencies(protobuf::libprotobuf ext_protobuf) endif() if (NOT TARGET protobuf::protoc) add_executable(protobuf::protoc IMPORTED) set_target_properties(protobuf::protoc PROPERTIES IMPORTED_LOCATION "${Protobuf_PROTOC_EXECUTABLE}") add_dependencies(protobuf::protoc ext_protobuf) endif()