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# Minimum CMake required
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cmake_minimum_required(VERSION 2.8)
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# Project
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project(protobuf C CXX)
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# Options
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option(BUILD_TESTING "Build tests" ON)
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option(BUILD_SHARED_LIBS "Build Shared Libraries" OFF)
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if (MSVC)
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option(ZLIB "Build with zlib support" OFF)
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endif (MSVC)
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# Path to common header
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set(protobuf_COMMON_HEADER "../src/google/protobuf/stubs/common.h")
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# Parse version from common header
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file(STRINGS "${protobuf_COMMON_HEADER}" protobuf_VERSION_LINE
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LIMIT_COUNT 1
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REGEX "^#define GOOGLE_PROTOBUF_VERSION [0-9]+$")
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string(REGEX REPLACE "^.*PROTOBUF_VERSION ([0-9]+).*$" "\\1"
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protobuf_VERSION_NUMBER "${protobuf_VERSION_LINE}")
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math(EXPR protobuf_VERSION_MICRO
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"${protobuf_VERSION_NUMBER} % 1000")
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math(EXPR protobuf_VERSION_MINOR
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"(${protobuf_VERSION_NUMBER} - ${protobuf_VERSION_MICRO}) % 1000000 / 1000")
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math(EXPR protobuf_VERSION_MAJOR
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"(${protobuf_VERSION_NUMBER} - ${protobuf_VERSION_MINOR} * 1000 - ${protobuf_VERSION_MICRO}) % 1000000000 / 1000000")
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set(protobuf_VERSION_PATCH ${protobuf_VERSION_MICRO})
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set(protobuf_VERSION
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"${protobuf_VERSION_MAJOR}.${protobuf_VERSION_MINOR}.${protobuf_VERSION_MICRO}")
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add_definitions(-DGOOGLE_PROTOBUF_CMAKE_BUILD)
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find_package(Threads REQUIRED)
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if (CMAKE_USE_PTHREADS_INIT)
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add_definitions(-DHAVE_PTHREAD)
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endif (CMAKE_USE_PTHREADS_INIT)
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if (MSVC)
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if (ZLIB)
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set(HAVE_ZLIB 1)
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find_path(ZLIB_INCLUDE_DIRECTORIES zlib.h ${protobuf_SOURCE_DIR})
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find_library(ZLIB_LIBRARIES zdll ${protobuf_SOURCE_DIR})
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else (ZLIB)
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set(HAVE_ZLIB 0)
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endif (ZLIB)
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else (MSVC)
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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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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 (MSVC)
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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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if (MSVC)
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if (BUILD_SHARED_LIBS)
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add_definitions(-DPROTOBUF_USE_DLLS)
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endif (BUILD_SHARED_LIBS)
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add_definitions(/wd4244 /wd4267 /wd4018 /wd4355 /wd4800 /wd4251 /wd4996 /wd4146 /wd4305)
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endif (MSVC)
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if (MSVC)
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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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configure_file(extract_includes.bat.in extract_includes.bat)
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endif (MSVC)
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get_filename_component(protobuf_source_dir ${protobuf_SOURCE_DIR} PATH)
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include_directories(
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${ZLIB_INCLUDE_DIRECTORIES}
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${protobuf_BINARY_DIR}
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${protobuf_source_dir}/src)
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if (MSVC)
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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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# 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(libprotobuf-lite.cmake)
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include(libprotobuf.cmake)
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include(libprotoc.cmake)
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include(protoc.cmake)
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if (BUILD_TESTING)
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include(tests.cmake)
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endif (BUILD_TESTING)
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include(install.cmake)
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