f7e2e0b301
* Revert "Added cmake abseil include guard" This reverts commitb6ee841d7c. * Revert "Update CMake configuration to add a dependency on Abseil (#9793)" This reverts commite9246cd789.
352 lines
13 KiB
CMake
352 lines
13 KiB
CMake
# Minimum CMake required
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cmake_minimum_required(VERSION 3.5)
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if(protobuf_VERBOSE)
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message(STATUS "Protocol Buffers Configuring...")
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endif()
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# CMake policies
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cmake_policy(SET CMP0022 NEW)
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# On MacOS use @rpath/ for target's install name prefix path
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if (POLICY CMP0042)
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cmake_policy(SET CMP0042 NEW)
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endif ()
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# Clear VERSION variables when no VERSION is given to project()
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if(POLICY CMP0048)
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cmake_policy(SET CMP0048 NEW)
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endif()
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# MSVC runtime library flags are selected by an abstraction.
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if(POLICY CMP0091)
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cmake_policy(SET CMP0091 NEW)
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endif()
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# Project
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project(protobuf C CXX)
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if(protobuf_DEPRECATED_CMAKE_SUBDIRECTORY_USAGE)
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if(CMAKE_PROJECT_NAME STREQUAL "protobuf")
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get_filename_component(CMAKE_SOURCE_DIR ${CMAKE_SOURCE_DIR} DIRECTORY)
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endif()
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get_filename_component(CMAKE_CURRENT_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR} DIRECTORY)
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get_filename_component(PROJECT_SOURCE_DIR ${PROJECT_SOURCE_DIR} DIRECTORY)
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get_filename_component(protobuf_SOURCE_DIR ${protobuf_SOURCE_DIR} DIRECTORY)
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endif()
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# Add c++11 flags
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if (CYGWIN)
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=gnu++11")
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else()
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set(CMAKE_CXX_STANDARD 11)
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set(CMAKE_CXX_STANDARD_REQUIRED ON)
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set(CMAKE_CXX_EXTENSIONS OFF)
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endif()
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# The Intel compiler isn't able to deal with noinline member functions of
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# template classes defined in headers. As such it spams the output with
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# warning #2196: routine is both "inline" and "noinline"
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# This silences that warning.
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if (CMAKE_CXX_COMPILER_ID MATCHES Intel)
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string(APPEND CMAKE_CXX_FLAGS " -diag-disable=2196")
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endif()
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# Options
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option(protobuf_INSTALL "Install protobuf binaries and files" ON)
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if(WITH_PROTOC)
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set(protobuf_PROTOC_EXE ${WITH_PROTOC} CACHE FILEPATH "Protocol Buffer Compiler executable" FORCE)
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endif()
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option(protobuf_BUILD_TESTS "Build tests" ON)
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option(protobuf_BUILD_CONFORMANCE "Build conformance tests" OFF)
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option(protobuf_BUILD_EXAMPLES "Build examples" OFF)
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option(protobuf_BUILD_PROTOC_BINARIES "Build libprotoc and protoc compiler" ON)
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option(protobuf_BUILD_LIBPROTOC "Build libprotoc" OFF)
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option(protobuf_DISABLE_RTTI "Remove runtime type information in the binaries" OFF)
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if (BUILD_SHARED_LIBS)
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set(protobuf_BUILD_SHARED_LIBS_DEFAULT ON)
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else (BUILD_SHARED_LIBS)
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set(protobuf_BUILD_SHARED_LIBS_DEFAULT OFF)
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endif (BUILD_SHARED_LIBS)
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option(protobuf_BUILD_SHARED_LIBS "Build Shared Libraries" ${protobuf_BUILD_SHARED_LIBS_DEFAULT})
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include(CMakeDependentOption)
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cmake_dependent_option(protobuf_MSVC_STATIC_RUNTIME "Link static runtime libraries" ON
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"NOT protobuf_BUILD_SHARED_LIBS" OFF)
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set(protobuf_WITH_ZLIB_DEFAULT ON)
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option(protobuf_WITH_ZLIB "Build with zlib support" ${protobuf_WITH_ZLIB_DEFAULT})
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set(protobuf_DEBUG_POSTFIX "d"
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CACHE STRING "Default debug postfix")
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mark_as_advanced(protobuf_DEBUG_POSTFIX)
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# User options
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include(${protobuf_SOURCE_DIR}/cmake/protobuf-options.cmake)
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# Overrides for option dependencies
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if (protobuf_BUILD_PROTOC_BINARIES OR protobuf_BUILD_TESTS)
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set(protobuf_BUILD_LIBPROTOC ON)
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endif ()
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# Path to main configure script
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set(protobuf_CONFIGURE_SCRIPT "${protobuf_SOURCE_DIR}/configure.ac")
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# Parse configure script
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set(protobuf_AC_INIT_REGEX
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"^AC_INIT\\(\\[([^]]+)\\],\\[([^]]+)\\],\\[([^]]+)\\],\\[([^]]+)\\]\\)$")
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file(STRINGS "${protobuf_CONFIGURE_SCRIPT}" protobuf_AC_INIT_LINE
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LIMIT_COUNT 1 REGEX "^AC_INIT")
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# Description
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string(REGEX REPLACE "${protobuf_AC_INIT_REGEX}" "\\1"
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protobuf_DESCRIPTION "${protobuf_AC_INIT_LINE}")
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# Version
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string(REGEX REPLACE "${protobuf_AC_INIT_REGEX}" "\\2"
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protobuf_VERSION_STRING "${protobuf_AC_INIT_LINE}")
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# Contact
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string(REGEX REPLACE "${protobuf_AC_INIT_REGEX}" "\\3"
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protobuf_CONTACT "${protobuf_AC_INIT_LINE}")
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# Parse version tweaks
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set(protobuf_VERSION_REGEX "^([0-9]+)\\.([0-9]+)\\.([0-9]+)([-]rc[-]|\\.)?([0-9]*)$")
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string(REGEX REPLACE "${protobuf_VERSION_REGEX}" "\\1"
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protobuf_VERSION_MAJOR "${protobuf_VERSION_STRING}")
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string(REGEX REPLACE "${protobuf_VERSION_REGEX}" "\\2"
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protobuf_VERSION_MINOR "${protobuf_VERSION_STRING}")
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string(REGEX REPLACE "${protobuf_VERSION_REGEX}" "\\3"
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protobuf_VERSION_PATCH "${protobuf_VERSION_STRING}")
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string(REGEX REPLACE "${protobuf_VERSION_REGEX}" "\\5"
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protobuf_VERSION_PRERELEASE "${protobuf_VERSION_STRING}")
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message(STATUS "${protobuf_VERSION_PRERELEASE}")
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# Package version
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set(protobuf_VERSION
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"${protobuf_VERSION_MAJOR}.${protobuf_VERSION_MINOR}.${protobuf_VERSION_PATCH}")
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if(protobuf_VERSION_PRERELEASE)
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set(protobuf_VERSION "${protobuf_VERSION}.${protobuf_VERSION_PRERELEASE}")
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else()
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set(protobuf_VERSION "${protobuf_VERSION}.0")
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endif()
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message(STATUS "${protobuf_VERSION}")
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if(protobuf_VERBOSE)
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message(STATUS "Configuration script parsing status [")
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message(STATUS " Description : ${protobuf_DESCRIPTION}")
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message(STATUS " Version : ${protobuf_VERSION} (${protobuf_VERSION_STRING})")
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message(STATUS " Contact : ${protobuf_CONTACT}")
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message(STATUS "]")
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endif()
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add_definitions(-DGOOGLE_PROTOBUF_CMAKE_BUILD)
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if (protobuf_DISABLE_RTTI)
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add_definitions(-DGOOGLE_PROTOBUF_NO_RTTI=1)
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endif()
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file(WRITE ${CMAKE_CURRENT_BINARY_DIR}/cmaketest.map
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"{
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global:
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main;
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local:
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*;
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};")
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# CheckLinkerFlag module available in CMake >=3.18.
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if(${CMAKE_VERSION} VERSION_GREATER 3.18 OR ${CMAKE_VERSION} VERSION_EQUAL 3.18)
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include(CheckLinkerFlag)
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check_linker_flag(CXX -Wl,--version-script=${CMAKE_CURRENT_BINARY_DIR}/cmaketest.map protobuf_HAVE_LD_VERSION_SCRIPT)
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else()
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include(CheckCXXSourceCompiles)
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set(OLD_CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS})
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set(CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS} -Wl,--version-script=${CMAKE_CURRENT_BINARY_DIR}/cmaketest.map)
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check_cxx_source_compiles("
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int main() {
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return 0;
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}
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" protobuf_HAVE_LD_VERSION_SCRIPT)
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set(CMAKE_REQUIRED_FLAGS ${OLD_CMAKE_REQUIRED_FLAGS})
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endif()
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file(REMOVE ${CMAKE_CURRENT_BINARY_DIR}/cmaketest.map)
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find_package(Threads REQUIRED)
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set(_protobuf_FIND_ZLIB)
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if (protobuf_WITH_ZLIB)
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find_package(ZLIB)
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if (ZLIB_FOUND)
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set(HAVE_ZLIB 1)
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# FindZLIB module define ZLIB_INCLUDE_DIRS variable
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# Set ZLIB_INCLUDE_DIRECTORIES for compatible
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set(ZLIB_INCLUDE_DIRECTORIES ${ZLIB_INCLUDE_DIRECTORIES} ${ZLIB_INCLUDE_DIRS})
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# Using imported target if exists
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if (TARGET ZLIB::ZLIB)
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set(ZLIB_LIBRARIES ZLIB::ZLIB)
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set(_protobuf_FIND_ZLIB "if(NOT ZLIB_FOUND)\n find_package(ZLIB)\nendif()")
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endif (TARGET ZLIB::ZLIB)
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else (ZLIB_FOUND)
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set(HAVE_ZLIB 0)
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# Explicitly set these to empty (override NOT_FOUND) so cmake doesn't
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# complain when we use them later.
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set(ZLIB_INCLUDE_DIRECTORIES)
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set(ZLIB_LIBRARIES)
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endif (ZLIB_FOUND)
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endif (protobuf_WITH_ZLIB)
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if (HAVE_ZLIB)
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add_definitions(-DHAVE_ZLIB)
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endif (HAVE_ZLIB)
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# We need to link with libatomic on systems that do not have builtin atomics, or
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# don't have builtin support for 8 byte atomics
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set(protobuf_LINK_LIBATOMIC false)
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if (NOT MSVC)
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include(CheckCXXSourceCompiles)
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set(OLD_CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS})
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set(CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS} -std=c++11)
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check_cxx_source_compiles("
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#include <atomic>
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int main() {
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return std::atomic<int64_t>{};
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}
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" protobuf_HAVE_BUILTIN_ATOMICS)
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if (NOT protobuf_HAVE_BUILTIN_ATOMICS)
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set(protobuf_LINK_LIBATOMIC true)
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endif (NOT protobuf_HAVE_BUILTIN_ATOMICS)
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set(CMAKE_REQUIRED_FLAGS ${OLD_CMAKE_REQUIRED_FLAGS})
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endif (NOT MSVC)
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if (protobuf_BUILD_SHARED_LIBS)
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set(protobuf_SHARED_OR_STATIC "SHARED")
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else (protobuf_BUILD_SHARED_LIBS)
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set(protobuf_SHARED_OR_STATIC "STATIC")
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# The CMAKE_<LANG>_FLAGS(_<BUILD_TYPE>)? is meant to be user controlled.
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# Prior to CMake 3.15, the MSVC runtime library was pushed into the same flags
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# making programmatic control difficult. Prefer the functionality in newer
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# CMake versions when available.
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if(${CMAKE_VERSION} VERSION_GREATER 3.15 OR ${CMAKE_VERSION} VERSION_EQUAL 3.15)
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if (protobuf_MSVC_STATIC_RUNTIME)
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set(CMAKE_MSVC_RUNTIME_LIBRARY MultiThreaded$<$<CONFIG:Debug>:Debug>)
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else()
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set(CMAKE_MSVC_RUNTIME_LIBRARY MultiThreaded$<$<CONFIG:Debug>:Debug>DLL)
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endif()
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else()
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# In case we are building static libraries, link also the runtime library statically
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# so that MSVCR*.DLL is not required at runtime.
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# https://msdn.microsoft.com/en-us/library/2kzt1wy3.aspx
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# This is achieved by replacing msvc option /MD with /MT and /MDd with /MTd
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# http://www.cmake.org/Wiki/CMake_FAQ#How_can_I_build_my_MSVC_application_with_a_static_runtime.3F
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if (MSVC AND protobuf_MSVC_STATIC_RUNTIME)
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foreach(flag_var
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CMAKE_CXX_FLAGS CMAKE_CXX_FLAGS_DEBUG CMAKE_CXX_FLAGS_RELEASE
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CMAKE_CXX_FLAGS_MINSIZEREL CMAKE_CXX_FLAGS_RELWITHDEBINFO)
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if(${flag_var} MATCHES "/MD")
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string(REGEX REPLACE "/MD" "/MT" ${flag_var} "${${flag_var}}")
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endif(${flag_var} MATCHES "/MD")
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endforeach(flag_var)
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endif (MSVC AND protobuf_MSVC_STATIC_RUNTIME)
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endif()
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endif (protobuf_BUILD_SHARED_LIBS)
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if (MSVC)
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if (CMAKE_CXX_COMPILER_ID STREQUAL "MSVC")
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# Build with multiple processes
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add_definitions(/MP)
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endif()
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# Set source file and execution character sets to UTF-8
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add_definitions(/utf-8)
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# MSVC warning suppressions
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add_definitions(
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/wd4065 # switch statement contains 'default' but no 'case' labels
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/wd4244 # 'conversion' conversion from 'type1' to 'type2', possible loss of data
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/wd4251 # 'identifier' : class 'type' needs to have dll-interface to be used by clients of class 'type2'
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/wd4267 # 'var' : conversion from 'size_t' to 'type', possible loss of data
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/wd4305 # 'identifier' : truncation from 'type1' to 'type2'
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/wd4307 # 'operator' : integral constant overflow
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/wd4309 # 'conversion' : truncation of constant value
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/wd4334 # 'operator' : result of 32-bit shift implicitly converted to 64 bits (was 64-bit shift intended?)
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/wd4355 # 'this' : used in base member initializer list
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/wd4506 # no definition for inline function 'function'
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/wd4800 # 'type' : forcing value to bool 'true' or 'false' (performance warning)
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/wd4996 # The compiler encountered a deprecated declaration.
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)
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# Allow big object
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add_definitions(/bigobj)
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string(REPLACE "/" "\\" PROTOBUF_SOURCE_WIN32_PATH ${protobuf_SOURCE_DIR})
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string(REPLACE "/" "\\" PROTOBUF_BINARY_WIN32_PATH ${protobuf_BINARY_DIR})
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string(REPLACE "." "," protobuf_RC_FILEVERSION "${protobuf_VERSION}")
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configure_file(${protobuf_SOURCE_DIR}/cmake/extract_includes.bat.in extract_includes.bat)
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# Suppress linker warnings about files with no symbols defined.
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set(CMAKE_STATIC_LINKER_FLAGS "${CMAKE_STATIC_LINKER_FLAGS} /ignore:4221")
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if (CMAKE_CXX_COMPILER_ID STREQUAL "MSVC")
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# Configure Resource Compiler
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enable_language(RC)
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# use English language (0x409) in resource compiler
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set(rc_flags "/l0x409")
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# fix rc.exe invocations because of usage of add_definitions()
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set(CMAKE_RC_COMPILE_OBJECT "<CMAKE_RC_COMPILER> ${rc_flags} <DEFINES> /fo<OBJECT> <SOURCE>")
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endif()
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# Generate the version.rc file used elsewhere.
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configure_file(${protobuf_SOURCE_DIR}/cmake/version.rc.in ${CMAKE_CURRENT_BINARY_DIR}/version.rc @ONLY)
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set(protobuf_version_rc_file ${CMAKE_CURRENT_BINARY_DIR}/version.rc)
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# Add the "lib" prefix for generated .lib outputs.
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set(LIB_PREFIX lib)
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else (MSVC)
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# No version.rc file.
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set(protobuf_version_rc_file)
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# When building with "make", "lib" prefix will be added automatically by
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# the build tool.
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set(LIB_PREFIX)
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endif (MSVC)
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include_directories(
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${ZLIB_INCLUDE_DIRECTORIES}
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${protobuf_BINARY_DIR}
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${protobuf_SOURCE_DIR}/src)
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if (protobuf_UNICODE)
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add_definitions(-DUNICODE -D_UNICODE)
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endif (protobuf_UNICODE)
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include(${protobuf_SOURCE_DIR}/cmake/libprotobuf-lite.cmake)
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include(${protobuf_SOURCE_DIR}/cmake/libprotobuf.cmake)
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if (protobuf_BUILD_LIBPROTOC)
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include(${protobuf_SOURCE_DIR}/cmake/libprotoc.cmake)
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endif (protobuf_BUILD_LIBPROTOC)
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if (protobuf_BUILD_PROTOC_BINARIES)
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include(${protobuf_SOURCE_DIR}/cmake/protoc.cmake)
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if (NOT DEFINED protobuf_PROTOC_EXE)
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set(protobuf_PROTOC_EXE protoc)
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endif (NOT DEFINED protobuf_PROTOC_EXE)
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endif (protobuf_BUILD_PROTOC_BINARIES)
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# Ensure we have a protoc executable if we need one
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if (protobuf_BUILD_TESTS OR protobuf_BUILD_CONFORMANCE OR protobuf_BUILD_EXAMPLES)
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if (NOT DEFINED protobuf_PROTOC_EXE)
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find_program(protobuf_PROTOC_EXE protoc)
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if (NOT protobuf_PROTOC_EXE)
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message(FATAL "Build requires 'protoc' but binary not found and not building protoc.")
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endif ()
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endif ()
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if(protobuf_VERBOSE)
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message(STATUS "Using protoc : ${protobuf_PROTOC_EXE}")
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endif(protobuf_VERBOSE)
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endif ()
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if (protobuf_BUILD_TESTS)
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enable_testing()
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include(${protobuf_SOURCE_DIR}/cmake/tests.cmake)
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endif (protobuf_BUILD_TESTS)
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if (protobuf_BUILD_CONFORMANCE)
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include(${protobuf_SOURCE_DIR}/cmake/conformance.cmake)
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endif (protobuf_BUILD_CONFORMANCE)
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if (protobuf_INSTALL)
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include(${protobuf_SOURCE_DIR}/cmake/install.cmake)
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endif (protobuf_INSTALL)
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if (protobuf_BUILD_EXAMPLES)
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include(${protobuf_SOURCE_DIR}/cmake/examples.cmake)
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endif (protobuf_BUILD_EXAMPLES)
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if(protobuf_VERBOSE)
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message(STATUS "Protocol Buffers Configuring done")
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endif(protobuf_VERBOSE)
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