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cmake: use {LLVM,Clang}Config.cmake
Combined Daan De Meyer's #227 with other simplification * USE_SHARED_LLVM is deleted in favor of LLVM_LINK_LLVM_DYLIB * LLVM_ENABLE_RTTI is deleted as it is provided by LLVMConfig.cmake * Only direct Clang/LLVM dependencies are required in target_link_libraries * Restrict -DCLANG_RESOURCE_DIRECTORY= to src/utils.cc
This commit is contained in:
Fangrui Song
parent
5d27ac9f34
commit
7c70c0662f
110
CMakeLists.txt
110
CMakeLists.txt
@ -1,39 +1,35 @@
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cmake_minimum_required(VERSION 3.8)
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project(ccls LANGUAGES CXX)
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list(APPEND CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/cmake/)
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include(DefaultCMakeBuildType)
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# Required Clang version
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option(LLVM_ENABLE_RTTI "-fno-rtti if OFF. This should match LLVM libraries" OFF)
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option(USE_SHARED_LLVM "Link against libLLVM.so instead separate LLVM{Option,Support,...}" OFF)
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option(USE_SYSTEM_RAPIDJSON "Use system RapidJSON instead of the git submodule if exists" ON)
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# Sources for the executable are specified at end of CMakeLists.txt
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add_executable(ccls "")
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### Compile options
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### Default build type
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# CMake default compile flags:
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# MSVC + Clang(Windows):
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# debug: /MDd /Zi /Ob0 /Od /RTC1
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# release: /MD /O2 /Ob2 /DNDEBUG
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# GCC + Clang(Linux):
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# debug: -g
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# release: -O3 -DNDEBUG
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set(DEFAULT_CMAKE_BUILD_TYPE Release)
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# CMAKE_BUILD_TYPE is not available if a multi-configuration generator is used
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# (eg Visual Studio generators)
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if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
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message(STATUS "Setting build type to '${DEFAULT_CMAKE_BUILD_TYPE}' as none \
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was specified.")
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set(CMAKE_BUILD_TYPE ${DEFAULT_CMAKE_BUILD_TYPE}
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CACHE STRING "Choose the type of build." FORCE)
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# Set the possible values of build type for cmake-gui
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set_property(CACHE CMAKE_BUILD_TYPE
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PROPERTY STRINGS Debug Release MinSizeRel RelWithDebInfo)
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endif()
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### Compile options
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# Enable C++17 (Required)
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set_property(TARGET ccls PROPERTY CXX_STANDARD 17)
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set_property(TARGET ccls PROPERTY CXX_STANDARD_REQUIRED ON)
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set_property(TARGET ccls PROPERTY CXX_EXTENSIONS OFF)
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if(NOT LLVM_ENABLE_RTTI)
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# releases.llvm.org libraries are compiled with -fno-rtti
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# The mismatch between lib{clang,LLVM}* and ccls can make libstdc++ std::make_shared return nullptr
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# _Sp_counted_ptr_inplace::_M_get_deleter
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target_compile_options(ccls PRIVATE -fno-rtti)
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endif()
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# CMake sets MSVC for both MSVC and Clang(Windows)
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if(MSVC)
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# Common MSVC/Clang(Windows) options
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@ -72,9 +68,41 @@ endif()
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### Libraries
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# See cmake/FindClang.cmake
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find_package(Clang 7.0.0)
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target_link_libraries(ccls PRIVATE Clang::Clang)
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find_package(Clang REQUIRED)
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target_link_libraries(ccls PRIVATE
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clangIndex
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clangFormat
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clangTooling
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clangToolingInclusions
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clangToolingCore
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clangFrontend
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clangParse
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clangSerialization
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clangSema
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clangAST
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clangLex
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clangDriver
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clangBasic
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)
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if(LLVM_LINK_LLVM_DYLIB)
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target_link_libraries(ccls PRIVATE LLVM)
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else()
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# In llvm 7, clangDriver headers reference LLVMOption
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target_link_libraries(ccls PRIVATE LLVMOption LLVMSupport)
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endif()
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if(NOT LLVM_ENABLE_RTTI)
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# releases.llvm.org libraries are compiled with -fno-rtti
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# The mismatch between lib{clang,LLVM}* and ccls can make libstdc++ std::make_shared return nullptr
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# _Sp_counted_ptr_inplace::_M_get_deleter
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if(MSVC)
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target_compile_options(ccls PRIVATE /GR-)
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else()
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target_compile_options(ccls PRIVATE -fno-rtti)
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endif()
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endif()
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# Enable threading support
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set(THREADS_PREFER_PTHREAD_FLAG ON)
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@ -90,13 +118,34 @@ endif()
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### Definitions
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target_compile_definitions(ccls PRIVATE
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DEFAULT_RESOURCE_DIRECTORY=R"\(${Clang_RESOURCE_DIR}\)")
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# Find Clang resource directory with Clang executable.
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find_program(CLANG_EXECUTABLE clang)
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if(NOT CLANG_EXECUTABLE)
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message(FATAL_ERROR "clang executable not found.")
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endif()
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execute_process(
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COMMAND ${CLANG_EXECUTABLE} -print-resource-dir
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RESULT_VARIABLE CLANG_FIND_RESOURCE_DIR_RESULT
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OUTPUT_VARIABLE CLANG_RESOURCE_DIR
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ERROR_VARIABLE CLANG_FIND_RESOURCE_DIR_ERROR
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OUTPUT_STRIP_TRAILING_WHITESPACE
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)
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if(CLANG_FIND_RESOURCE_DIR_RESULT)
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message(FATAL_ERROR "Error retrieving Clang resource directory with Clang \
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executable. Output:\n ${CLANG_FIND_RESOURCE_DIR_ERROR}")
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endif()
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set_property(SOURCE src/utils.cc APPEND PROPERTY COMPILE_DEFINITIONS
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CLANG_RESOURCE_DIRECTORY=R"\(${CLANG_RESOURCE_DIR}\)")
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### Includes
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target_include_directories(ccls PRIVATE src)
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target_include_directories(ccls SYSTEM PRIVATE third_party)
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target_include_directories(ccls SYSTEM PRIVATE
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third_party ${LLVM_INCLUDE_DIRS} ${CLANG_INCLUDE_DIRS})
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if(USE_SYSTEM_RAPIDJSON)
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find_package(RapidJSON QUIET)
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@ -110,13 +159,6 @@ target_include_directories(ccls SYSTEM PRIVATE ${RapidJSON_INCLUDE_DIRS})
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install(TARGETS ccls RUNTIME DESTINATION bin)
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### Tools
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# We use glob here since source files are already manually added with
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# target_sources further down
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file(GLOB SOURCES src/*.cc src/*.h src/serializers/*.cc src/serializers/*.h
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src/messages/*.h src/messages/*.cc)
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### Sources
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target_sources(ccls PRIVATE third_party/siphash.cc)
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@ -1,14 +0,0 @@
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set(DEFAULT_CMAKE_BUILD_TYPE Release)
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# CMAKE_BUILD_TYPE is not available if a multi-configuration generator is used
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# (eg Visual Studio generators)
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if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
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message(STATUS "Setting build type to '${DEFAULT_CMAKE_BUILD_TYPE}' as none \
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was specified.")
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set(CMAKE_BUILD_TYPE ${DEFAULT_CMAKE_BUILD_TYPE}
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CACHE STRING "Choose the type of build." FORCE)
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# Set the possible values of build type for cmake-gui
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set_property(CACHE CMAKE_BUILD_TYPE
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PROPERTY STRINGS Debug Release MinSizeRel RelWithDebInfo)
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endif()
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@ -1,153 +0,0 @@
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#.rst
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# FindClang
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# ---------
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#
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# Find Clang and LLVM libraries required by ccls
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#
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# Results are reported in the following variables::
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#
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# Clang_FOUND - True if headers and requested libraries were found
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# Clang_EXECUTABLE - Clang executable
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# Clang_RESOURCE_DIR - Clang resource directory
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# Clang_VERSION - Clang version as reported by Clang executable
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#
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# The following :prop_tgt:`IMPORTED` targets are also defined::
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#
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# Clang::Clang - Target for all required Clang libraries and headers
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#
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# This module reads hints about which libraries to look for and where to find
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# them from the following variables::
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#
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# CLANG_ROOT - If set, only look for Clang components in CLANG_ROOT
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#
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# Example to link against Clang target::
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#
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# target_link_libraries(<target> PRIVATE Clang::Clang)
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### Definitions
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# Wrapper macro's around the find_* macro's from CMake that only search in
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# CLANG_ROOT if it is defined
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macro(_Clang_find_library VAR NAME)
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# Windows needs lib prefix
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if (CLANG_ROOT)
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find_library(${VAR} NAMES ${NAME} lib${NAME}
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NO_DEFAULT_PATH PATHS ${CLANG_ROOT} PATH_SUFFIXES lib)
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else()
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find_library(${VAR} NAMES ${NAME} lib${NAME})
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endif()
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endmacro()
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macro(_Clang_find_add_library NAME)
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_Clang_find_library(${NAME}_LIBRARY ${NAME})
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list(APPEND _Clang_LIBRARIES ${${NAME}_LIBRARY})
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endmacro()
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macro(_Clang_find_path VAR INCLUDE_FILE)
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if (CLANG_ROOT)
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find_path(${VAR} ${INCLUDE_FILE}
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NO_DEFAULT_PATH PATHS ${CLANG_ROOT} PATH_SUFFIXES include)
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else()
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find_path(${VAR} ${INCLUDE_FILE})
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endif()
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endmacro()
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macro(_Clang_find_program VAR NAME)
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if (CLANG_ROOT)
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find_program(${VAR} ${NAME}
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NO_DEFAULT_PATH PATHS ${CLANG_ROOT} PATH_SUFFIXES bin)
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else()
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find_program(${VAR} ${NAME})
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endif()
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endmacro()
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### Start
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set(_Clang_REQUIRED_VARS Clang_LIBRARY Clang_INCLUDE_DIR Clang_EXECUTABLE
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Clang_RESOURCE_DIR Clang_VERSION
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LLVM_INCLUDE_DIR LLVM_BUILD_INCLUDE_DIR)
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_Clang_find_library(Clang_LIBRARY clangIndex)
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_Clang_find_add_library(clangFormat)
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_Clang_find_add_library(clangTooling)
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_Clang_find_library(clangToolingInclusions_LIBRARY clangToolingInclusions)
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if (clangToolingInclusions_LIBRARY)
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list(APPEND _Clang_LIBRARIES ${clangToolingInclusions_LIBRARY})
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endif()
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_Clang_find_add_library(clangToolingCore)
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_Clang_find_add_library(clangRewrite)
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_Clang_find_add_library(clangFrontend)
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_Clang_find_add_library(clangParse)
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_Clang_find_add_library(clangSerialization)
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_Clang_find_add_library(clangSema)
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_Clang_find_add_library(clangAnalysis)
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_Clang_find_add_library(clangEdit)
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_Clang_find_add_library(clangAST)
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_Clang_find_add_library(clangLex)
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_Clang_find_add_library(clangDriver)
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_Clang_find_add_library(clangBasic)
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if(USE_SHARED_LLVM)
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_Clang_find_add_library(LLVM)
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else()
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_Clang_find_add_library(LLVMMCParser)
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_Clang_find_add_library(LLVMMC)
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_Clang_find_add_library(LLVMBitReader)
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_Clang_find_add_library(LLVMOption)
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_Clang_find_add_library(LLVMProfileData)
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_Clang_find_add_library(LLVMCore)
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_Clang_find_add_library(LLVMBinaryFormat)
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_Clang_find_add_library(LLVMSupport)
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_Clang_find_add_library(LLVMDemangle)
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endif()
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_Clang_find_path(Clang_INCLUDE_DIR clang-c/Index.h)
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_Clang_find_path(Clang_BUILD_INCLUDE_DIR clang/Driver/Options.inc)
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_Clang_find_path(LLVM_INCLUDE_DIR llvm/PassInfo.h)
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_Clang_find_path(LLVM_BUILD_INCLUDE_DIR llvm/Config/llvm-config.h)
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_Clang_find_program(Clang_EXECUTABLE clang)
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if(Clang_EXECUTABLE)
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# Find Clang resource directory with Clang executable
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execute_process(COMMAND ${Clang_EXECUTABLE} -print-resource-dir
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RESULT_VARIABLE _Clang_FIND_RESOURCE_DIR_RESULT
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OUTPUT_VARIABLE Clang_RESOURCE_DIR
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ERROR_VARIABLE _Clang_FIND_RESOURCE_DIR_ERROR
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OUTPUT_STRIP_TRAILING_WHITESPACE)
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if(_Clang_FIND_RESOURCE_DIR_RESULT)
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message(FATAL_ERROR "Error retrieving Clang resource directory with Clang \
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executable. Output:\n ${_Clang_FIND_RESOURCE_DIR_ERROR}")
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endif()
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# Find Clang version
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set(_Clang_VERSION_REGEX "([0-9]+)\\.([0-9]+)\\.([0-9]+)")
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execute_process(
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COMMAND ${Clang_EXECUTABLE} --version
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OUTPUT_VARIABLE Clang_VERSION
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)
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string(REGEX MATCH ${_Clang_VERSION_REGEX} Clang_VERSION ${Clang_VERSION})
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endif()
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include(FindPackageHandleStandardArgs)
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find_package_handle_standard_args(Clang
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FOUND_VAR Clang_FOUND
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REQUIRED_VARS ${_Clang_REQUIRED_VARS}
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VERSION_VAR Clang_VERSION
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)
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if(Clang_FOUND AND NOT TARGET Clang::Clang)
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add_library(Clang::Clang UNKNOWN IMPORTED)
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set_target_properties(Clang::Clang PROPERTIES
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IMPORTED_LOCATION ${Clang_LIBRARY}
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INTERFACE_INCLUDE_DIRECTORIES "${Clang_INCLUDE_DIR};${Clang_BUILD_INCLUDE_DIR};${LLVM_INCLUDE_DIR};${LLVM_BUILD_INCLUDE_DIR}")
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if(NOT MSVC)
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find_package(Curses REQUIRED)
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find_package(ZLIB REQUIRED)
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endif()
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set_property(TARGET Clang::Clang PROPERTY IMPORTED_LINK_INTERFACE_LIBRARIES "${_Clang_LIBRARIES};${CURSES_LIBRARIES};${ZLIB_LIBRARIES}")
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if(MINGW)
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set_property(TARGET Clang::Clang APPEND_STRING PROPERTY IMPORTED_LINK_INTERFACE_LIBRARIES ";version")
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endif()
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endif()
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@ -177,5 +177,5 @@ int ReverseSubseqMatch(std::string_view pat, std::string_view text,
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return -1;
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}
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std::string GetDefaultResourceDirectory() { return DEFAULT_RESOURCE_DIRECTORY; }
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}
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std::string GetDefaultResourceDirectory() { return CLANG_RESOURCE_DIRECTORY; }
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} // namespace ccls
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