cmake_minimum_required(VERSION 3.1) project(ccls LANGUAGES CXX) list(APPEND CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/cmake/) include(DefaultCMakeBuildType) # Required Clang version set(CLANG_VERSION 6.0.0 CACHE STRING "Clang version") set(CLANG_DOWNLOAD_LOCATION ${CMAKE_BINARY_DIR} CACHE STRING "Downloaded Clang location") option(SYSTEM_CLANG "Use system installation of Clang instead of \ downloading Clang" OFF) option(ASAN "Compile with address sanitizers" OFF) option(CLANG_USE_BUNDLED_LIBC++ "Let Clang use bundled libc++" OFF) option(USE_SHARED_LLVM "Link against libLLVM.so instead separate LLVM{Option,Support,...}" OFF) # Sources for the executable are specified at end of CMakeLists.txt add_executable(ccls "") ### Compile options # CMake default compile flags: # MSVC + Clang(Windows): # debug: /MDd /Zi /Ob0 /Od /RTC1 # release: /MD /O2 /Ob2 /DNDEBUG # GCC + Clang(Linux): # debug: -g # release: -O3 -DNDEBUG # Enable C++17 (Required) set_property(TARGET ccls PROPERTY CXX_STANDARD 17) set_property(TARGET ccls PROPERTY CXX_STANDARD_REQUIRED ON) # Disable gnu extensions except for Cygwin which needs them to build properly if(NOT CYGWIN) set_property(TARGET ccls PROPERTY CXX_EXTENSIONS OFF) endif() # To link against LLVM libraries (usually compiled with -fno-rtti) target_compile_options(ccls PRIVATE -fno-rtti) # CMake sets MSVC for both MSVC and Clang(Windows) if(MSVC) # Common MSVC/Clang(Windows) options target_compile_options(ccls PRIVATE /nologo /EHsc /W3 # roughly -Wall /wd4996 # disable loguru unsafe warnings /wd4722 # ignores warning C4722 # (destructor never returns) in loguru /wd4267 # ignores warning C4267 # (conversion from 'size_t' to 'type'), # roughly -Wno-sign-compare /wd4800 $<$:/FS> ) else() # Common GCC/Clang(Linux) options target_compile_options(ccls PRIVATE -Wall -Wno-sign-compare ) if(${CMAKE_CXX_COMPILER_ID} STREQUAL GNU) target_compile_options(ccls PRIVATE -Wno-return-type -Wno-unused-result) endif() if(${CMAKE_CXX_COMPILER_ID} STREQUAL Clang) target_compile_options(ccls PRIVATE $<$:-fno-limit-debug-info>) endif() if(ASAN) target_compile_options(ccls PRIVATE -fsanitize=address,undefined) # target_link_libraries also takes linker flags target_link_libraries(ccls PRIVATE -fsanitize=address,undefined) endif() endif() ### Download Clang if required if(NOT SYSTEM_CLANG) message(STATUS "Using downloaded Clang") include(DownloadAndExtractClang) download_and_extract_clang(${CLANG_VERSION} ${CLANG_DOWNLOAD_LOCATION}) # Used by FindClang set(CLANG_ROOT ${DOWNLOADED_CLANG_DIR}) if(${CMAKE_CXX_COMPILER_ID} STREQUAL Clang AND CLANG_USE_BUNDLED_LIBC++) message(STATUS "Using bundled libc++") target_compile_options(ccls PRIVATE -nostdinc++ -cxx-isystem ${CLANG_ROOT}/include/c++/v1) if(${CMAKE_SYSTEM_NAME} STREQUAL Linux) # Don't use -stdlib=libc++ because while ccls is linked with libc++, bundled clang+llvm require libstdc++ target_link_libraries(ccls PRIVATE -L${CLANG_ROOT}/lib c++ c++abi) # FreeBSD defaults to -stdlib=libc++ and uses system libcxxrt.a endif() endif() else() message(STATUS "Using system Clang") endif() ### Libraries # See cmake/FindClang.cmake find_package(Clang ${CLANG_VERSION} REQUIRED) target_link_libraries(ccls PRIVATE Clang::Clang) # Enable threading support set(THREADS_PREFER_PTHREAD_FLAG ON) find_package(Threads REQUIRED) target_link_libraries(ccls PRIVATE Threads::Threads) if(${CMAKE_SYSTEM_NAME} STREQUAL Darwin) target_link_libraries(ccls PRIVATE -lc++experimental) elseif(${CMAKE_SYSTEM_NAME} STREQUAL Linux) # loguru calls dladdr target_link_libraries(ccls PRIVATE ${CMAKE_DL_LIBS}) elseif(${CMAKE_SYSTEM_NAME} STREQUAL FreeBSD) # loguru::stacktrace_as_stdstring calls backtrace_symbols # src/platform_posix.cc uses libthr find_package(Backtrace REQUIRED) target_link_libraries(ccls PRIVATE ${Backtrace_LIBRARIES} thr) if(SYSTEM_CLANG) target_link_libraries(ccls PRIVATE c++experimental) endif() endif() ### Definitions target_compile_definitions(ccls PRIVATE LOGURU_WITH_STREAMS=1 LOGURU_FILENAME_WIDTH=18 LOGURU_THREADNAME_WIDTH=13 DEFAULT_RESOURCE_DIRECTORY="${Clang_RESOURCE_DIR}") ### Includes target_include_directories(ccls PRIVATE src third_party third_party/rapidjson/include third_party/loguru third_party/doctest) ### Install install(TARGETS ccls RUNTIME DESTINATION bin) # TODO: install libclang.dll on Windows as well if(NOT SYSTEM_CLANG AND NOT ${CMAKE_SYSTEM_NAME} STREQUAL Windows) if(${CMAKE_SYSTEM_NAME} MATCHES Linux|FreeBSD) set_property(TARGET ccls APPEND PROPERTY INSTALL_RPATH $ORIGIN/../lib) elseif(${CMAKE_SYSTEM_NAME} STREQUAL Darwin) set_property(TARGET ccls APPEND PROPERTY INSTALL_RPATH @loader_path/../lib) endif() file(GLOB LIBCLANG_PLUS_SYMLINKS ${DOWNLOADED_CLANG_DIR}/lib/libclang.[so,dylib]*) install(FILES ${LIBCLANG_PLUS_SYMLINKS} DESTINATION lib) endif() # Allow running from build Windows by copying libclang.dll to build directory if(NOT SYSTEM_CLANG AND ${CMAKE_SYSTEM_NAME} STREQUAL Windows) add_custom_command(TARGET ccls POST_BUILD COMMAND ${CMAKE_COMMAND} -E copy ${DOWNLOADED_CLANG_DIR}/bin/libclang.dll $ COMMENT "Copying libclang.dll to build directory ...") endif() ### Tools # We use glob here since source files are already manually added with # target_sources further down file(GLOB SOURCES src/*.cc src/*.h src/serializers/*.cc src/serializers/*.h src/messages/*.h src/messages/*.cc) ### Sources target_sources(ccls PRIVATE third_party/siphash.cc) target_sources(ccls PRIVATE src/clang_complete.cc src/clang_tu.cc src/clang_utils.cc src/config.cc src/diagnostics_engine.cc src/file_consumer.cc src/filesystem.cc src/fuzzy_match.cc src/main.cc src/include_complete.cc src/indexer.cc src/method.cc src/language.cc src/log.cc src/lsp.cc src/match.cc src/message_handler.cc src/pipeline.cc src/platform_posix.cc src/platform_win.cc src/position.cc src/project.cc src/query_utils.cc src/query.cc src/serializer.cc src/test.cc src/third_party_impl.cc src/utils.cc src/working_files.cc) target_sources(ccls PRIVATE src/messages/ccls_base.cc src/messages/ccls_call_hierarchy.cc src/messages/ccls_callers.cc src/messages/ccls_file_info.cc src/messages/ccls_freshen_index.cc src/messages/ccls_inheritance_hierarchy.cc src/messages/ccls_member_hierarchy.cc src/messages/ccls_vars.cc src/messages/exit.cc src/messages/initialize.cc src/messages/shutdown.cc src/messages/text_document_code_lens.cc src/messages/text_document_completion.cc src/messages/text_document_definition.cc src/messages/text_document_did_change.cc src/messages/text_document_did_close.cc src/messages/text_document_did_open.cc src/messages/text_document_did_save.cc src/messages/text_document_document_highlight.cc src/messages/text_document_document_symbol.cc src/messages/text_document_hover.cc src/messages/text_document_implementation.cc src/messages/text_document_references.cc src/messages/text_document_rename.cc src/messages/text_document_signature_help.cc src/messages/text_document_type_definition.cc src/messages/workspace_did_change_configuration.cc src/messages/workspace_did_change_watched_files.cc src/messages/workspace_symbol.cc )