1 # Minimum CMake required 2 cmake_minimum_required(VERSION 2.8) 3 4 # Project 5 project(protobuf C CXX) 6 7 # CMake policies 8 cmake_policy(SET CMP0022 NEW) 9 10 # Options 11 option(protobuf_VERBOSE "Enable for verbose output" OFF) 12 option(protobuf_BUILD_TESTS "Build tests" ON) 13 if (BUILD_SHARED_LIBS) 14 set(protobuf_BUILD_SHARED_LIBS_DEFAULT ON) 15 else (BUILD_SHARED_LIBS) 16 set(protobuf_BUILD_SHARED_LIBS_DEFAULT OFF) 17 endif (BUILD_SHARED_LIBS) 18 option(protobuf_BUILD_SHARED_LIBS "Build Shared Libraries" ${protobuf_BUILD_SHARED_LIBS_DEFAULT}) 19 option(protobuf_MSVC_STATIC_RUNTIME "Link static runtime libraries" ON) 20 if (MSVC) 21 set(protobuf_WITH_ZLIB_DEFAULT OFF) 22 else (MSVC) 23 set(protobuf_WITH_ZLIB_DEFAULT ON) 24 endif (MSVC) 25 option(protobuf_WITH_ZLIB "Build with zlib support" ${protobuf_WITH_ZLIB_DEFAULT}) 26 set(protobuf_DEBUG_POSTFIX "d" 27 CACHE STRING "Default debug postfix") 28 29 # Path to main configure script 30 set(protobuf_CONFIGURE_SCRIPT "../configure.ac") 31 32 # Parse configure script 33 set(protobuf_AC_INIT_REGEX 34 "^AC_INIT\\(\\[([^]]+)\\],\\[([^]]+)\\],\\[([^]]+)\\],\\[([^]]+)\\]\\)$") 35 file(STRINGS "${protobuf_CONFIGURE_SCRIPT}" protobuf_AC_INIT_LINE 36 LIMIT_COUNT 1 REGEX "^AC_INIT") 37 # Description 38 string(REGEX REPLACE "${protobuf_AC_INIT_REGEX}" "\\1" 39 protobuf_DESCRIPTION "${protobuf_AC_INIT_LINE}") 40 # Version 41 string(REGEX REPLACE "${protobuf_AC_INIT_REGEX}" "\\2" 42 protobuf_VERSION_STRING "${protobuf_AC_INIT_LINE}") 43 # Contact 44 string(REGEX REPLACE "${protobuf_AC_INIT_REGEX}" "\\3" 45 protobuf_CONTACT "${protobuf_AC_INIT_LINE}") 46 # Parse version tweaks 47 set(protobuf_VERSION_REGEX "^([0-9]+)\\.([0-9]+)\\.([0-9]+).*$") 48 string(REGEX REPLACE "${protobuf_VERSION_REGEX}" "\\1" 49 protobuf_VERSION_MAJOR "${protobuf_VERSION_STRING}") 50 string(REGEX REPLACE "${protobuf_VERSION_REGEX}" "\\2" 51 protobuf_VERSION_MINOR "${protobuf_VERSION_STRING}") 52 string(REGEX REPLACE "${protobuf_VERSION_REGEX}" "\\3" 53 protobuf_VERSION_PATCH "${protobuf_VERSION_STRING}") 54 # Package version 55 set(protobuf_VERSION 56 "${protobuf_VERSION_MAJOR}.${protobuf_VERSION_MINOR}.${protobuf_VERSION_PATCH}") 57 58 if(protobuf_VERBOSE) 59 message(STATUS "Configuration script parsing status [") 60 message(STATUS " Description : ${protobuf_DESCRIPTION}") 61 message(STATUS " Version : ${protobuf_VERSION} (${protobuf_VERSION_STRING})") 62 message(STATUS " Contact : ${protobuf_CONTACT}") 63 message(STATUS "]") 64 endif() 65 66 add_definitions(-DGOOGLE_PROTOBUF_CMAKE_BUILD) 67 68 find_package(Threads REQUIRED) 69 if (CMAKE_USE_PTHREADS_INIT) 70 add_definitions(-DHAVE_PTHREAD) 71 endif (CMAKE_USE_PTHREADS_INIT) 72 73 if (protobuf_WITH_ZLIB) 74 find_package(ZLIB) 75 if (ZLIB_FOUND) 76 set(HAVE_ZLIB 1) 77 # FindZLIB module define ZLIB_INCLUDE_DIRS variable 78 # Set ZLIB_INCLUDE_DIRECTORIES for compatible 79 set(ZLIB_INCLUDE_DIRECTORIES ${ZLIB_INCLUDE_DIRECTORIES} ${ZLIB_INCLUDE_DIRS}) 80 # Using imported target if exists 81 if (TARGET ZLIB::ZLIB) 82 set(ZLIB_LIBRARIES ZLIB::ZLIB) 83 endif (TARGET ZLIB::ZLIB) 84 else (ZLIB_FOUND) 85 set(HAVE_ZLIB 0) 86 # Explicitly set these to empty (override NOT_FOUND) so cmake doesn't 87 # complain when we use them later. 88 set(ZLIB_INCLUDE_DIRECTORIES) 89 set(ZLIB_LIBRARIES) 90 endif (ZLIB_FOUND) 91 endif (protobuf_WITH_ZLIB) 92 93 if (HAVE_ZLIB) 94 add_definitions(-DHAVE_ZLIB) 95 endif (HAVE_ZLIB) 96 97 if (protobuf_BUILD_SHARED_LIBS) 98 set(protobuf_SHARED_OR_STATIC "SHARED") 99 else (protobuf_BUILD_SHARED_LIBS) 100 set(protobuf_SHARED_OR_STATIC "STATIC") 101 # In case we are building static libraries, link also the runtime library statically 102 # so that MSVCR*.DLL is not required at runtime. 103 # https://msdn.microsoft.com/en-us/library/2kzt1wy3.aspx 104 # This is achieved by replacing msvc option /MD with /MT and /MDd with /MTd 105 # http://www.cmake.org/Wiki/CMake_FAQ#How_can_I_build_my_MSVC_application_with_a_static_runtime.3F 106 if (MSVC AND protobuf_MSVC_STATIC_RUNTIME) 107 foreach(flag_var 108 CMAKE_CXX_FLAGS CMAKE_CXX_FLAGS_DEBUG CMAKE_CXX_FLAGS_RELEASE 109 CMAKE_CXX_FLAGS_MINSIZEREL CMAKE_CXX_FLAGS_RELWITHDEBINFO) 110 if(${flag_var} MATCHES "/MD") 111 string(REGEX REPLACE "/MD" "/MT" ${flag_var} "${${flag_var}}") 112 endif(${flag_var} MATCHES "/MD") 113 endforeach(flag_var) 114 endif (MSVC AND protobuf_MSVC_STATIC_RUNTIME) 115 endif (protobuf_BUILD_SHARED_LIBS) 116 117 if (MSVC) 118 # Build with multiple processes 119 add_definitions(/MP) 120 add_definitions(/wd4244 /wd4267 /wd4018 /wd4355 /wd4800 /wd4251 /wd4996 /wd4146 /wd4305) 121 # Allow big object 122 add_definitions(/bigobj) 123 string(REPLACE "/" "\\" PROTOBUF_SOURCE_WIN32_PATH ${protobuf_SOURCE_DIR}) 124 string(REPLACE "/" "\\" PROTOBUF_BINARY_WIN32_PATH ${protobuf_BINARY_DIR}) 125 configure_file(extract_includes.bat.in extract_includes.bat) 126 endif (MSVC) 127 128 get_filename_component(protobuf_source_dir ${protobuf_SOURCE_DIR} PATH) 129 130 include_directories( 131 ${ZLIB_INCLUDE_DIRECTORIES} 132 ${protobuf_BINARY_DIR} 133 ${protobuf_source_dir}/src) 134 135 if (MSVC) 136 # Add the "lib" prefix for generated .lib outputs. 137 set(LIB_PREFIX lib) 138 else (MSVC) 139 # When building with "make", "lib" prefix will be added automatically by 140 # the build tool. 141 set(LIB_PREFIX) 142 endif (MSVC) 143 144 include(libprotobuf-lite.cmake) 145 include(libprotobuf.cmake) 146 include(libprotoc.cmake) 147 include(protoc.cmake) 148 149 if (protobuf_BUILD_TESTS) 150 include(tests.cmake) 151 endif (protobuf_BUILD_TESTS) 152 153 include(install.cmake) 154
