CMakeLists.txt 6.25 KB
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# 3.5 is actually available almost everywhere, but this a good minimum
cmake_minimum_required(VERSION 3.4)
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# enable MSVC_RUNTIME_LIBRARY target property
# see https://cmake.org/cmake/help/latest/policy/CMP0091.html
if(POLICY CMP0091)
  cmake_policy(SET CMP0091 NEW)
endif()

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project(YAML_CPP VERSION 0.7.0 LANGUAGES CXX)
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include(CMakePackageConfigHelpers)
include(CMakeDependentOption)
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include(CheckCXXCompilerFlag)
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include(GNUInstallDirs)
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option(YAML_CPP_BUILD_CONTRIB "Enable yaml-cpp contrib in library" ON)
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option(YAML_CPP_BUILD_TOOLS "Enable parse tools" ON)
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option(YAML_BUILD_SHARED_LIBS "Build yaml-cpp shared library" ${BUILD_SHARED_LIBS})
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option(YAML_CPP_FORMAT_SOURCE "Format source" ON)

if (YAML_CPP_BUILD_TESTS)
    include(CTest)
endif()

if (YAML_CPP_FORMAT_SOURCE)
    find_program(YAML_CPP_CLANG_FORMAT_EXE NAMES clang-format)
endif()
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cmake_dependent_option(YAML_CPP_BUILD_TESTS
  "Enable yaml-cpp tests" ON
  "BUILD_TESTING;CMAKE_SOURCE_DIR STREQUAL PROJECT_SOURCE_DIR" OFF)
cmake_dependent_option(YAML_CPP_INSTALL
  "Enable generation of yaml-cpp install targets" ON
  "CMAKE_SOURCE_DIR STREQUAL PROJECT_SOURCE_DIR" OFF)
cmake_dependent_option(YAML_MSVC_SHARED_RT
  "MSVC: Build yaml-cpp with shared runtime libs (/MD)" ON
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  "CMAKE_SYSTEM_NAME MATCHES Windows" OFF)
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if (YAML_BUILD_SHARED_LIBS)
  set(yaml-cpp-type SHARED)
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  set(yaml-cpp-label-postfix "shared")
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else()
  set(yaml-cpp-type STATIC)
  set(yaml-cpp-label-postfix "static")
  add_definitions(-DYAML_CPP_STATIC_DEFINE)
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endif()
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set(build-shared $<BOOL:${YAML_BUILD_SHARED_LIBS}>)
set(build-windows-dll $<AND:$<BOOL:${CMAKE_HOST_WIN32}>,${build-shared}>)
set(not-msvc $<NOT:$<CXX_COMPILER_ID:MSVC>>)
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set(msvc-shared_rt $<BOOL:${YAML_MSVC_SHARED_RT}>)
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if (NOT DEFINED CMAKE_MSVC_RUNTIME_LIBRARY)
  set(CMAKE_MSVC_RUNTIME_LIBRARY
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    MultiThreaded$<$<CONFIG:Debug>:Debug>$<${msvc-shared_rt}:DLL>)
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endif()

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set(contrib-pattern "src/contrib/*.cpp")
set(src-pattern "src/*.cpp")
if (CMAKE_VERSION VERSION_GREATER 3.12)
  list(INSERT contrib-pattern 0 CONFIGURE_DEPENDS)
  list(INSERT src-pattern 0 CONFIGURE_DEPENDS)
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endif()

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file(GLOB yaml-cpp-contrib-sources ${contrib-pattern})
file(GLOB yaml-cpp-sources ${src-pattern})
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set(msvc-rt $<TARGET_PROPERTY:MSVC_RUNTIME_LIBRARY>)
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set(msvc-rt-mtd-static $<STREQUAL:${msvc-rt},MultiThreadedDebug>)
set(msvc-rt-mt-static $<STREQUAL:${msvc-rt},MultiThreaded>)
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set(msvc-rt-mtd-dll $<STREQUAL:${msvc-rt},MultiThreadedDebugDLL>)
set(msvc-rt-mt-dll $<STREQUAL:${msvc-rt},MultiThreadedDLL>)
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set(backport-msvc-runtime $<VERSION_LESS:${CMAKE_VERSION},3.15>)
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add_library(yaml-cpp ${yaml-cpp-type} "")
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add_library(yaml-cpp::yaml-cpp ALIAS yaml-cpp)
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set_property(TARGET yaml-cpp
  PROPERTY
    MSVC_RUNTIME_LIBRARY ${CMAKE_MSVC_RUNTIME_LIBRARY})
set_property(TARGET yaml-cpp
  PROPERTY
    CXX_STANDARD_REQUIRED ON)
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if (NOT YAML_BUILD_SHARED_LIBS)
  set_property(TARGET yaml-cpp PROPERTY POSITION_INDEPENDENT_CODE ON)
endif()

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target_include_directories(yaml-cpp
  PUBLIC
    $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include>
    $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
  PRIVATE
    $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/src>)
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if (NOT DEFINED CMAKE_CXX_STANDARD)
  set_target_properties(yaml-cpp
    PROPERTIES
      CXX_STANDARD 11)
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endif()

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target_compile_options(yaml-cpp
  PRIVATE
    $<${not-msvc}:-Wall -Wextra -Wshadow -Weffc++ -Wno-long-long>
    $<${not-msvc}:-pedantic -pedantic-errors>
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    $<$<AND:${backport-msvc-runtime},${msvc-rt-mtd-static}>:-MTd>
    $<$<AND:${backport-msvc-runtime},${msvc-rt-mt-static}>:-MT>
    $<$<AND:${backport-msvc-runtime},${msvc-rt-mtd-dll}>:-MDd>
    $<$<AND:${backport-msvc-runtime},${msvc-rt-mt-dll}>:-MD>
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    # /wd4127 = disable warning C4127 "conditional expression is constant"
    # http://msdn.microsoft.com/en-us/library/6t66728h.aspx
    # /wd4355 = disable warning C4355 "'this' : used in base member initializer list
    # http://msdn.microsoft.com/en-us/library/3c594ae3.aspx
    $<$<CXX_COMPILER_ID:MSVC>:/W3 /wd4127 /wd4355>)
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target_compile_definitions(yaml-cpp
  PRIVATE
    $<${build-windows-dll}:${PROJECT_NAME}_DLL>
    $<$<NOT:$<BOOL:${YAML_CPP_BUILD_CONTRIB}>>:YAML_CPP_NO_CONTRIB>)
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target_sources(yaml-cpp
  PRIVATE
    $<$<BOOL:${YAML_CPP_BUILD_CONTRIB}>:${yaml-cpp-contrib-sources}>
    ${yaml-cpp-sources})
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if (NOT DEFINED CMAKE_DEBUG_POSTFIX)
  set(CMAKE_DEBUG_POSTFIX "d")
endif()
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set_target_properties(yaml-cpp PROPERTIES
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  VERSION "${PROJECT_VERSION}"
  SOVERSION "${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}"
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  PROJECT_LABEL "yaml-cpp ${yaml-cpp-label-postfix}"
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  DEBUG_POSTFIX "${CMAKE_DEBUG_POSTFIX}")
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# FIXME(felix2012): A more common place for the cmake export would be
# `CMAKE_INSTALL_LIBDIR`, as e.g. done in ubuntu or in this project for GTest
set(CONFIG_EXPORT_DIR "${CMAKE_INSTALL_DATADIR}/cmake/yaml-cpp")
set(EXPORT_TARGETS yaml-cpp)
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configure_package_config_file(
  "${PROJECT_SOURCE_DIR}/yaml-cpp-config.cmake.in"
  "${PROJECT_BINARY_DIR}/yaml-cpp-config.cmake"
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  INSTALL_DESTINATION "${CONFIG_EXPORT_DIR}"
  PATH_VARS CMAKE_INSTALL_INCLUDEDIR CONFIG_EXPORT_DIR)
unset(EXPORT_TARGETS)
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write_basic_package_version_file(
  "${PROJECT_BINARY_DIR}/yaml-cpp-config-version.cmake"
  COMPATIBILITY AnyNewerVersion)
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configure_file(yaml-cpp.pc.in yaml-cpp.pc @ONLY)
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if (YAML_CPP_INSTALL)
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  install(TARGETS yaml-cpp
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    EXPORT yaml-cpp-targets
    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
    ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR})
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  install(DIRECTORY ${PROJECT_SOURCE_DIR}/include/
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    DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
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                FILES_MATCHING PATTERN "*.h")
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  install(EXPORT yaml-cpp-targets
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    DESTINATION "${CONFIG_EXPORT_DIR}")
  install(FILES
      "${PROJECT_BINARY_DIR}/yaml-cpp-config.cmake"
      "${PROJECT_BINARY_DIR}/yaml-cpp-config-version.cmake"
    DESTINATION "${CONFIG_EXPORT_DIR}")
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  install(FILES "${PROJECT_BINARY_DIR}/yaml-cpp.pc"
    DESTINATION ${CMAKE_INSTALL_DATADIR}/pkgconfig)
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endif()
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unset(CONFIG_EXPORT_DIR)
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if(YAML_CPP_BUILD_TESTS)
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  add_subdirectory(test)
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endif()
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if(YAML_CPP_BUILD_TOOLS)
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  add_subdirectory(util)
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endif()
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if (YAML_CPP_FORMAT_SOURCE AND YAML_CPP_CLANG_FORMAT_EXE)
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  add_custom_target(format
    COMMAND clang-format --style=file -i $<TARGET_PROPERTY:yaml-cpp,SOURCES>
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    COMMAND_EXPAND_LISTS
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    COMMENT "Running clang-format"
    VERBATIM)
endif()