| # Minimum CMake required. If available, accept the policy-controlled behavior up |
| # to 3.26. |
| cmake_minimum_required(VERSION 3.10...3.26) |
| |
| # Revert to old behavior for MSVC debug symbols. |
| if(POLICY CMP0141) |
| cmake_policy(SET CMP0141 OLD) |
| endif() |
| |
| if(protobuf_VERBOSE) |
| message(STATUS "Protocol Buffers Configuring...") |
| endif() |
| |
| # Project |
| project(protobuf C CXX) |
| |
| if(protobuf_DEPRECATED_CMAKE_SUBDIRECTORY_USAGE) |
| if(CMAKE_PROJECT_NAME STREQUAL "protobuf") |
| get_filename_component(CMAKE_SOURCE_DIR ${CMAKE_SOURCE_DIR} DIRECTORY) |
| endif() |
| get_filename_component(CMAKE_CURRENT_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR} DIRECTORY) |
| get_filename_component(PROJECT_SOURCE_DIR ${PROJECT_SOURCE_DIR} DIRECTORY) |
| get_filename_component(protobuf_SOURCE_DIR ${protobuf_SOURCE_DIR} DIRECTORY) |
| endif() |
| |
| # Options |
| option(protobuf_INSTALL "Install protobuf binaries and files" ON) |
| option(protobuf_BUILD_TESTS "Build tests" ON) |
| option(protobuf_BUILD_CONFORMANCE "Build conformance tests" OFF) |
| option(protobuf_BUILD_EXAMPLES "Build examples" OFF) |
| option(protobuf_BUILD_PROTOBUF_BINARIES "Build protobuf libraries and protoc compiler" ON) |
| option(protobuf_BUILD_PROTOC_BINARIES "Build libprotoc and protoc compiler" ON) |
| option(protobuf_BUILD_LIBPROTOC "Build libprotoc" OFF) |
| option(protobuf_DISABLE_RTTI "Remove runtime type information in the binaries" OFF) |
| option(protobuf_TEST_XML_OUTDIR "Output directory for XML logs from tests." "") |
| option(protobuf_ALLOW_CCACHE "Adjust build flags to allow for ccache support." OFF) |
| if (BUILD_SHARED_LIBS) |
| set(protobuf_BUILD_SHARED_LIBS_DEFAULT ON) |
| else (BUILD_SHARED_LIBS) |
| set(protobuf_BUILD_SHARED_LIBS_DEFAULT OFF) |
| endif (BUILD_SHARED_LIBS) |
| option(protobuf_BUILD_SHARED_LIBS "Build Shared Libraries" ${protobuf_BUILD_SHARED_LIBS_DEFAULT}) |
| include(CMakeDependentOption) |
| cmake_dependent_option(protobuf_MSVC_STATIC_RUNTIME "Link static runtime libraries" ON |
| "NOT protobuf_BUILD_SHARED_LIBS" OFF) |
| set(protobuf_WITH_ZLIB_DEFAULT ON) |
| option(protobuf_WITH_ZLIB "Build with zlib support" ${protobuf_WITH_ZLIB_DEFAULT}) |
| set(protobuf_DEBUG_POSTFIX "d" |
| CACHE STRING "Default debug postfix") |
| mark_as_advanced(protobuf_DEBUG_POSTFIX) |
| |
| if(WITH_PROTOC) |
| set(protobuf_PROTOC_EXE protoc) |
| set(protobuf_BUILD_PROTOC_BINARIES OFF) |
| add_executable(protoc IMPORTED) |
| set_property(TARGET protoc PROPERTY IMPORTED_LOCATION ${WITH_PROTOC}) |
| endif() |
| |
| # User options |
| include(${protobuf_SOURCE_DIR}/cmake/protobuf-options.cmake) |
| |
| if (protobuf_BUILD_SHARED_LIBS) |
| # This is necessary for linking in Abseil. |
| set(CMAKE_POSITION_INDEPENDENT_CODE ON) |
| |
| # Build Abseil as shared libraries to avoid ODR violations. |
| set(BUILD_SHARED_LIBS ON) |
| |
| # Output directory is correct by default for most build setups. However, when |
| # building Protobuf as a DLL, it is important to have the DLL in the same |
| # directory as the executable using it. Thus, we put all binaries in a single |
| # /bin directory. |
| if (MSVC) |
| set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin) |
| set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin) |
| set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin) |
| set(CMAKE_PDB_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin) |
| endif () |
| endif () |
| |
| # Version metadata |
| set(protobuf_VERSION_STRING "4.24.0") |
| set(protobuf_DESCRIPTION "Protocol Buffers") |
| set(protobuf_CONTACT "protobuf@googlegroups.com") |
| |
| # Overrides for option dependencies |
| if (protobuf_BUILD_PROTOC_BINARIES OR protobuf_BUILD_TESTS) |
| set(protobuf_BUILD_LIBPROTOC ON) |
| endif () |
| if (NOT protobuf_BUILD_PROTOBUF_BINARIES) |
| set(protobuf_INSTALL OFF) |
| endif() |
| # Parse version tweaks |
| set(protobuf_VERSION_REGEX "^([0-9]+)\\.([0-9]+)\\.([0-9]+)([-]rc[-]|\\.)?([0-9]*)$") |
| string(REGEX REPLACE "${protobuf_VERSION_REGEX}" "\\1" |
| protobuf_VERSION_MAJOR "${protobuf_VERSION_STRING}") |
| string(REGEX REPLACE "${protobuf_VERSION_REGEX}" "\\2" |
| protobuf_VERSION_MINOR "${protobuf_VERSION_STRING}") |
| string(REGEX REPLACE "${protobuf_VERSION_REGEX}" "\\3" |
| protobuf_VERSION_PATCH "${protobuf_VERSION_STRING}") |
| string(REGEX REPLACE "${protobuf_VERSION_REGEX}" "\\5" |
| protobuf_VERSION_PRERELEASE "${protobuf_VERSION_STRING}") |
| |
| message(STATUS "${protobuf_VERSION_PRERELEASE}") |
| |
| # Package version |
| set(protobuf_VERSION |
| "${protobuf_VERSION_MINOR}.${protobuf_VERSION_PATCH}") |
| |
| if(protobuf_VERSION_PRERELEASE) |
| set(protobuf_VERSION "${protobuf_VERSION}.${protobuf_VERSION_PRERELEASE}") |
| else() |
| set(protobuf_VERSION "${protobuf_VERSION}.0") |
| endif() |
| message(STATUS "${protobuf_VERSION}") |
| |
| if(protobuf_VERBOSE) |
| message(STATUS "Configuration script parsing status [") |
| message(STATUS " Description : ${protobuf_DESCRIPTION}") |
| message(STATUS " Version : ${protobuf_VERSION} (${protobuf_VERSION_STRING})") |
| message(STATUS " Contact : ${protobuf_CONTACT}") |
| message(STATUS "]") |
| endif() |
| |
| file(WRITE ${CMAKE_CURRENT_BINARY_DIR}/cmaketest.map |
| "{ |
| global: |
| main; |
| local: |
| *; |
| };") |
| # CheckLinkerFlag module available in CMake >=3.18. |
| if(${CMAKE_VERSION} VERSION_GREATER 3.18 OR ${CMAKE_VERSION} VERSION_EQUAL 3.18) |
| include(CheckLinkerFlag) |
| check_linker_flag(CXX -Wl,--version-script=${CMAKE_CURRENT_BINARY_DIR}/cmaketest.map protobuf_HAVE_LD_VERSION_SCRIPT) |
| else() |
| include(CheckCXXSourceCompiles) |
| set(OLD_CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS}) |
| set(CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS} -Wl,--version-script=${CMAKE_CURRENT_BINARY_DIR}/cmaketest.map) |
| check_cxx_source_compiles(" |
| int main() { |
| return 0; |
| } |
| " protobuf_HAVE_LD_VERSION_SCRIPT) |
| set(CMAKE_REQUIRED_FLAGS ${OLD_CMAKE_REQUIRED_FLAGS}) |
| endif() |
| file(REMOVE ${CMAKE_CURRENT_BINARY_DIR}/cmaketest.map) |
| |
| find_package(Threads REQUIRED) |
| |
| # We can install dependencies from submodules if we're running |
| # CMake v3.13 or newer. |
| if(CMAKE_VERSION VERSION_LESS 3.13) |
| set(_protobuf_INSTALL_SUPPORTED_FROM_MODULE OFF) |
| else() |
| set(_protobuf_INSTALL_SUPPORTED_FROM_MODULE ON) |
| endif() |
| |
| set(_protobuf_FIND_ZLIB) |
| if (protobuf_WITH_ZLIB) |
| find_package(ZLIB) |
| if (ZLIB_FOUND) |
| set(HAVE_ZLIB 1) |
| # FindZLIB module define ZLIB_INCLUDE_DIRS variable |
| # Set ZLIB_INCLUDE_DIRECTORIES for compatible |
| set(ZLIB_INCLUDE_DIRECTORIES ${ZLIB_INCLUDE_DIRECTORIES} ${ZLIB_INCLUDE_DIRS}) |
| # Using imported target if exists |
| if (TARGET ZLIB::ZLIB) |
| set(ZLIB_LIBRARIES ZLIB::ZLIB) |
| set(_protobuf_FIND_ZLIB "if(NOT ZLIB_FOUND)\n find_package(ZLIB)\nendif()") |
| endif (TARGET ZLIB::ZLIB) |
| else (ZLIB_FOUND) |
| set(HAVE_ZLIB 0) |
| # Explicitly set these to empty (override NOT_FOUND) so cmake doesn't |
| # complain when we use them later. |
| set(ZLIB_INCLUDE_DIRECTORIES) |
| set(ZLIB_LIBRARIES) |
| endif (ZLIB_FOUND) |
| endif (protobuf_WITH_ZLIB) |
| |
| # We need to link with libatomic on systems that do not have builtin atomics, or |
| # don't have builtin support for 8 byte atomics |
| set(protobuf_LINK_LIBATOMIC false) |
| if (NOT MSVC) |
| include(CheckCXXSourceCompiles) |
| set(OLD_CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS}) |
| set(CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS} -std=c++14) |
| check_cxx_source_compiles(" |
| #include <atomic> |
| int main() { |
| return static_cast<int>(std::atomic<int64_t>{}); |
| } |
| " protobuf_HAVE_BUILTIN_ATOMICS) |
| if (NOT protobuf_HAVE_BUILTIN_ATOMICS) |
| set(protobuf_LINK_LIBATOMIC true) |
| endif (NOT protobuf_HAVE_BUILTIN_ATOMICS) |
| set(CMAKE_REQUIRED_FLAGS ${OLD_CMAKE_REQUIRED_FLAGS}) |
| endif (NOT MSVC) |
| |
| if (protobuf_BUILD_SHARED_LIBS) |
| set(protobuf_SHARED_OR_STATIC "SHARED") |
| else (protobuf_BUILD_SHARED_LIBS) |
| set(protobuf_SHARED_OR_STATIC "STATIC") |
| # The CMAKE_<LANG>_FLAGS(_<BUILD_TYPE>)? is meant to be user controlled. |
| # Prior to CMake 3.15, the MSVC runtime library was pushed into the same flags |
| # making programmatic control difficult. Prefer the functionality in newer |
| # CMake versions when available. |
| if(${CMAKE_VERSION} VERSION_GREATER 3.15 OR ${CMAKE_VERSION} VERSION_EQUAL 3.15) |
| if (protobuf_MSVC_STATIC_RUNTIME) |
| set(CMAKE_MSVC_RUNTIME_LIBRARY MultiThreaded$<$<CONFIG:Debug>:Debug>) |
| else() |
| set(CMAKE_MSVC_RUNTIME_LIBRARY MultiThreaded$<$<CONFIG:Debug>:Debug>DLL) |
| endif() |
| else() |
| # In case we are building static libraries, link also the runtime library statically |
| # so that MSVCR*.DLL is not required at runtime. |
| # https://msdn.microsoft.com/en-us/library/2kzt1wy3.aspx |
| # This is achieved by replacing msvc option /MD with /MT and /MDd with /MTd |
| # http://www.cmake.org/Wiki/CMake_FAQ#How_can_I_build_my_MSVC_application_with_a_static_runtime.3F |
| if (MSVC AND protobuf_MSVC_STATIC_RUNTIME) |
| foreach(flag_var |
| CMAKE_CXX_FLAGS CMAKE_CXX_FLAGS_DEBUG CMAKE_CXX_FLAGS_RELEASE |
| CMAKE_CXX_FLAGS_MINSIZEREL CMAKE_CXX_FLAGS_RELWITHDEBINFO) |
| if(${flag_var} MATCHES "/MD") |
| string(REGEX REPLACE "/MD" "/MT" ${flag_var} "${${flag_var}}") |
| endif(${flag_var} MATCHES "/MD") |
| endforeach(flag_var) |
| endif (MSVC AND protobuf_MSVC_STATIC_RUNTIME) |
| endif() |
| endif (protobuf_BUILD_SHARED_LIBS) |
| |
| # Export all symbols on Windows when building shared libraries |
| SET(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS ON) |
| |
| if (MSVC) |
| string(REPLACE "/" "\\" PROTOBUF_SOURCE_WIN32_PATH ${protobuf_SOURCE_DIR}) |
| string(REPLACE "/" "\\" PROTOBUF_BINARY_WIN32_PATH ${protobuf_BINARY_DIR}) |
| string(REPLACE "." "," protobuf_RC_FILEVERSION "${protobuf_VERSION}") |
| |
| if (protobuf_ALLOW_CCACHE) |
| # In order to support ccache, we need to remove the /Zi option because it |
| # puts debug symbols into separate pdb files (which in incompatible with |
| # ccache). This can be replaced with /Z7 to preserve debug symbols, which |
| # embeds debug symbols into the object files instead of creating a separate |
| # pdb file, which isn't currently supported by ccache. However, this bloats |
| # the ccache size by about a factor of 2x, making it very expensive in CI. |
| # Instead, we strip debug symbols to reduce this overhead. |
| foreach(v |
| CMAKE_C_FLAGS_DEBUG |
| CMAKE_CXX_FLAGS_DEBUG |
| CMAKE_C_FLAGS_RELWITHDEBINFO |
| CMAKE_CXX_FLAGS_RELWITHDEBINFO |
| ) |
| string(REGEX REPLACE "[-/]Z[iI7]" "/DEBUG:NONE" ${v} "${${v}}") |
| endforeach() |
| endif() |
| |
| # Suppress linker warnings about files with no symbols defined. |
| string(APPEND CMAKE_STATIC_LINKER_FLAGS " /ignore:4221") |
| |
| # use English language (0x409) in resource compiler |
| string(APPEND CMAKE_RC_FLAGS " -l0x409") |
| |
| # Generate the version.rc file used elsewhere. |
| configure_file(${protobuf_SOURCE_DIR}/cmake/version.rc.in ${CMAKE_CURRENT_BINARY_DIR}/version.rc @ONLY) |
| set(protobuf_version_rc_file ${CMAKE_CURRENT_BINARY_DIR}/version.rc) |
| |
| # Add the "lib" prefix for generated .lib outputs. |
| set(LIB_PREFIX lib) |
| else (MSVC) |
| # No version.rc file. |
| set(protobuf_version_rc_file) |
| |
| # When building with "make", "lib" prefix will be added automatically by |
| # the build tool. |
| set(LIB_PREFIX) |
| endif (MSVC) |
| |
| include_directories( |
| ${ZLIB_INCLUDE_DIRECTORIES} |
| ${protobuf_BINARY_DIR} |
| ${protobuf_SOURCE_DIR}/src) |
| |
| set(protobuf_ABSL_PROVIDER "module" CACHE STRING "Provider of absl library") |
| set_property(CACHE protobuf_ABSL_PROVIDER PROPERTY STRINGS "module" "package") |
| |
| set(protobuf_JSONCPP_PROVIDER "module" CACHE STRING "Provider of jsoncpp library") |
| set_property(CACHE protobuf_JSONCPP_PROVIDER PROPERTY STRINGS "module" "package") |
| |
| if (protobuf_BUILD_TESTS) |
| include(${protobuf_SOURCE_DIR}/cmake/gtest.cmake) |
| endif (protobuf_BUILD_TESTS) |
| |
| include(${protobuf_SOURCE_DIR}/cmake/abseil-cpp.cmake) |
| |
| if (protobuf_BUILD_PROTOBUF_BINARIES) |
| include(${protobuf_SOURCE_DIR}/cmake/utf8_range.cmake) |
| include(${protobuf_SOURCE_DIR}/cmake/libprotobuf-lite.cmake) |
| if (NOT DEFINED protobuf_LIB_PROTOBUF_LITE) |
| set(protobuf_LIB_PROTOBUF_LITE libprotobuf-lite) |
| endif () |
| include(${protobuf_SOURCE_DIR}/cmake/libprotobuf.cmake) |
| if (NOT DEFINED protobuf_LIB_PROTOBUF) |
| set(protobuf_LIB_PROTOBUF libprotobuf) |
| endif () |
| if (protobuf_BUILD_LIBPROTOC) |
| include(${protobuf_SOURCE_DIR}/cmake/libprotoc.cmake) |
| if (NOT DEFINED protobuf_LIB_PROTOC) |
| set(protobuf_LIB_PROTOC libprotoc) |
| endif () |
| endif () |
| if (protobuf_BUILD_PROTOC_BINARIES) |
| include(${protobuf_SOURCE_DIR}/cmake/protoc.cmake) |
| if (NOT DEFINED protobuf_PROTOC_EXE) |
| set(protobuf_PROTOC_EXE protoc) |
| endif () |
| endif () |
| else () |
| find_package(Protobuf NO_MODULE) |
| if (Protobuf_FOUND) |
| set(protobuf_PROTOC_EXE protobuf::protoc) |
| set(protobuf_LIB_PROTOC protobuf::libprotoc) |
| set(protobuf_LIB_PROTOBUF protobuf::libprotobuf) |
| set(protobuf_LIB_PROTOBUF_LITE protobuf::libprotobuf-lite) |
| message(STATUS "CMake installation of Protobuf found.") |
| endif () |
| endif () |
| |
| # Ensure we have a protoc executable and protobuf libraries if we need one |
| if (protobuf_BUILD_TESTS OR protobuf_BUILD_CONFORMANCE OR protobuf_BUILD_EXAMPLES) |
| if (NOT DEFINED protobuf_PROTOC_EXE) |
| find_program(protobuf_PROTOC_EXE protoc REQUIRED) |
| message(STATUS "Found system ${protobuf_PROTOC_EXE}.") |
| endif () |
| if(protobuf_VERBOSE) |
| message(STATUS "Using protoc : ${protobuf_PROTOC_EXE}") |
| message(STATUS "Using libprotobuf : ${protobuf_LIB_PROTOBUF}") |
| message(STATUS "Using libprotobuf-lite : ${protobuf_LIB_PROTOBUF_LITE}") |
| message(STATUS "Using libprotoc : ${protobuf_LIB_PROTOC}") |
| endif(protobuf_VERBOSE) |
| endif () |
| |
| if (protobuf_BUILD_TESTS) |
| enable_testing() |
| include(${protobuf_SOURCE_DIR}/cmake/tests.cmake) |
| endif (protobuf_BUILD_TESTS) |
| |
| if (protobuf_BUILD_CONFORMANCE) |
| include(${protobuf_SOURCE_DIR}/cmake/conformance.cmake) |
| endif (protobuf_BUILD_CONFORMANCE) |
| |
| if (protobuf_INSTALL) |
| include(${protobuf_SOURCE_DIR}/cmake/install.cmake) |
| endif (protobuf_INSTALL) |
| |
| if (protobuf_BUILD_EXAMPLES) |
| include(${protobuf_SOURCE_DIR}/cmake/examples.cmake) |
| endif (protobuf_BUILD_EXAMPLES) |
| |
| if(protobuf_VERBOSE) |
| message(STATUS "Protocol Buffers Configuring done") |
| endif(protobuf_VERBOSE) |