cannam@48: project("Cap'n Proto" CXX)
cannam@48: cmake_minimum_required(VERSION 3.0)
cannam@48: set(VERSION 0.6-dev)
cannam@48: 
cannam@48: set(CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake")
cannam@48: 
cannam@48: include(CheckIncludeFileCXX)
cannam@48: include(GNUInstallDirs)
cannam@48: if(MSVC)
cannam@48:   check_include_file_cxx(initializer_list HAS_CXX11)
cannam@48: else()
cannam@48:   check_include_file_cxx(initializer_list HAS_CXX11 "-std=gnu++0x")
cannam@48: endif()
cannam@48: if(NOT HAS_CXX11)
cannam@48:   message(SEND_ERROR "Requires a C++11 compiler and standard library.")
cannam@48: endif()
cannam@48: 
cannam@48: # these arguments are passed to all install(TARGETS) calls
cannam@48: set(INSTALL_TARGETS_DEFAULT_ARGS
cannam@48:   EXPORT CapnProtoTargets
cannam@48:   ARCHIVE DESTINATION "${CMAKE_INSTALL_LIBDIR}"
cannam@48:   LIBRARY DESTINATION "${CMAKE_INSTALL_LIBDIR}"
cannam@48:   RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}"
cannam@48: )
cannam@48: 
cannam@48: # Options ======================================================================
cannam@48: 
cannam@48: option(BUILD_TESTING "Build unit tests and enable CTest 'check' target." ON)
cannam@48: option(EXTERNAL_CAPNP "Use the system capnp binary, or the one specified in $CAPNP, instead of using the compiled one." OFF)
cannam@48: option(CAPNP_LITE "Compile Cap'n Proto in 'lite mode', in which all reflection APIs (schema.h, dynamic.h, etc.) are not included. Produces a smaller library at the cost of features. All programs built against the library must be compiled with -DCAPNP_LITE. Requires EXTERNAL_CAPNP." OFF)
cannam@48: 
cannam@48: # Check for invalid combinations of build options
cannam@48: if(CAPNP_LITE AND BUILD_TESTING AND NOT EXTERNAL_CAPNP)
cannam@48:   message(SEND_ERROR "You must set EXTERNAL_CAPNP when using CAPNP_LITE and BUILD_TESTING.")
cannam@48: endif()
cannam@48: 
cannam@48: 
cannam@48: if(MSVC AND NOT CAPNP_LITE)
cannam@48:   message(SEND_ERROR "Building with MSVC is only supported with CAPNP_LITE.")
cannam@48: endif()
cannam@48: 
cannam@48: if(CAPNP_LITE)
cannam@48:   set(CAPNP_LITE_FLAG "-DCAPNP_LITE")
cannam@48:   # This flag is attached as PUBLIC target_compile_definition to kj target
cannam@48: else()
cannam@48:   set(CAPNP_LITE_FLAG)
cannam@48: endif()
cannam@48: 
cannam@48: if(MSVC)
cannam@48:   # TODO(cleanup): Enable higher warning level in MSVC, but make sure to test
cannam@48:   #   build with that warning level and clean out false positives.
cannam@48: else()
cannam@48:   # Note that it's important to add new CXXFLAGS before ones specified by the
cannam@48:   # user, so that the user's flags override them. This is particularly
cannam@48:   # important if -Werror was enabled and then certain warnings need to be
cannam@48:   # disabled, as is done in super-test.sh.
cannam@48:   #
cannam@48:   # We enable a lot of warnings, but then disable some:
cannam@48:   # * strict-aliasing: We use type-punning in known-safe ways that GCC doesn't
cannam@48:   #   recognize as safe.
cannam@48:   # * sign-compare: Low S/N ratio.
cannam@48:   # * unused-parameter: Low S/N ratio.
cannam@48:   #
cannam@48:   # We have to use -std=gnu++0x isntead of -std=c++11 because otherwise we lose
cannam@48:   # GNU extensions that we need.
cannam@48:   add_compile_options(-std=gnu++0x -Wall -Wextra -Wno-strict-aliasing -Wno-sign-compare -Wno-unused-parameter)
cannam@48: 
cannam@48:   if (NOT ANDROID)
cannam@48:     add_compile_options(-pthread)
cannam@48:   endif()
cannam@48: endif()
cannam@48: 
cannam@48: # Source =======================================================================
cannam@48: include(CapnProtoMacros)
cannam@48: add_subdirectory(src)
cannam@48: 
cannam@48: # Install ======================================================================
cannam@48: 
cannam@48: include(CMakePackageConfigHelpers)
cannam@48: write_basic_package_version_file(
cannam@48:   "${CMAKE_CURRENT_BINARY_DIR}/cmake/CapnProtoConfigVersion.cmake"
cannam@48:   VERSION ${VERSION}
cannam@48:   COMPATIBILITY AnyNewerVersion
cannam@48: )
cannam@48: set(CONFIG_PACKAGE_LOCATION ${CMAKE_INSTALL_LIBDIR}/cmake/CapnProto)
cannam@48: 
cannam@48: configure_package_config_file(cmake/CapnProtoConfig.cmake.in
cannam@48:   ${CMAKE_CURRENT_BINARY_DIR}/cmake/CapnProtoConfig.cmake
cannam@48:   INSTALL_DESTINATION ${CONFIG_PACKAGE_LOCATION}
cannam@48:   PATH_VARS CMAKE_INSTALL_FULL_INCLUDEDIR
cannam@48: )
cannam@48: export(EXPORT CapnProtoTargets
cannam@48:   FILE "${CMAKE_CURRENT_BINARY_DIR}/cmake/CapnProtoTargets.cmake"
cannam@48:   NAMESPACE CapnProto::
cannam@48: )
cannam@48: install(EXPORT CapnProtoTargets
cannam@48:   FILE CapnProtoTargets.cmake
cannam@48:   NAMESPACE CapnProto::
cannam@48:   DESTINATION ${CONFIG_PACKAGE_LOCATION}
cannam@48: )
cannam@48: install(FILES
cannam@48:   cmake/CapnProtoMacros.cmake
cannam@48:   ${CMAKE_CURRENT_BINARY_DIR}/cmake/CapnProtoConfig.cmake
cannam@48:   ${CMAKE_CURRENT_BINARY_DIR}/cmake/CapnProtoConfigVersion.cmake
cannam@48:   DESTINATION ${CONFIG_PACKAGE_LOCATION}
cannam@48: )
cannam@48: #install CapnProtoMacros for CapnProtoConfig.cmake build directory consumers
cannam@48: configure_file(cmake/CapnProtoMacros.cmake cmake/CapnProtoMacros.cmake COPYONLY)
cannam@48: 
cannam@48: if(NOT MSVC)  # Don't install pkg-config files when building with MSVC
cannam@48:   # Variables for pkg-config files
cannam@48:   set(prefix "${CMAKE_INSTALL_PREFIX}")
cannam@48:   set(exec_prefix "") # not needed since we use absolute paths in libdir and includedir
cannam@48:   set(libdir "${CMAKE_INSTALL_FULL_LIBDIR}")
cannam@48:   set(includedir "${CMAKE_INSTALL_FULL_INCLUDEDIR}")
cannam@48:   set(PTHREAD_CFLAGS "-pthread")
cannam@48:   set(STDLIB_FLAG)  # TODO: Unsupported
cannam@48: 
cannam@48:   configure_file(kj.pc.in "${CMAKE_CURRENT_BINARY_DIR}/kj.pc" @ONLY)
cannam@48:   install(FILES "${CMAKE_CURRENT_BINARY_DIR}/kj.pc" DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
cannam@48: 
cannam@48:   configure_file(capnp.pc.in "${CMAKE_CURRENT_BINARY_DIR}/capnp.pc" @ONLY)
cannam@48:   install(FILES "${CMAKE_CURRENT_BINARY_DIR}/capnp.pc" DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
cannam@48: 
cannam@48:   if(NOT CAPNP_LITE)
cannam@48:     configure_file(kj-async.pc.in "${CMAKE_CURRENT_BINARY_DIR}/kj-async.pc" @ONLY)
cannam@48:     install(FILES "${CMAKE_CURRENT_BINARY_DIR}/kj-async.pc" DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
cannam@48: 
cannam@48:     configure_file(capnp-rpc.pc.in "${CMAKE_CURRENT_BINARY_DIR}/capnp-rpc.pc" @ONLY)
cannam@48:     install(FILES "${CMAKE_CURRENT_BINARY_DIR}/capnp-rpc.pc" DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
cannam@48: 
cannam@48:     configure_file(capnp-json.pc.in "${CMAKE_CURRENT_BINARY_DIR}/capnp-json.pc" @ONLY)
cannam@48:     install(FILES "${CMAKE_CURRENT_BINARY_DIR}/capnp-json.pc" DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
cannam@48:   endif()
cannam@48: 
cannam@48:   unset(STDLIB_FLAG)
cannam@48:   unset(PTHREAD_CFLAGS)
cannam@48:   unset(includedir)
cannam@48:   unset(libdir)
cannam@48:   unset(exec_prefix)
cannam@48:   unset(prefix)
cannam@48: endif()