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ccls/CMakeLists.txt

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CMake
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cmake_minimum_required(VERSION 3.1)
project(ccls LANGUAGES CXX)
list(APPEND CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/cmake/)
include(DefaultCMakeBuildType)
# Required libclang version
set(LIBCLANG_VERSION 6.0.0 CACHE STRING "libclang version")
set(LIBCLANG_DOWNLOAD_LOCATION ${CMAKE_BINARY_DIR}
CACHE STRING "Downloaded libclang location")
option(SYSTEM_LIBCLANG "Use system installation of libclang instead of \
downloading libclang" OFF)
option(ASAN "Compile with address sanitizers" 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()
# 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
$<$<CONFIG:Debug>:/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
$<$<CONFIG:Debug>:-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 libclang if required
if(NOT SYSTEM_LIBCLANG)
message(STATUS "Using downloaded libclang")
include(DownloadAndExtractClang)
download_and_extract_clang(${LIBCLANG_VERSION} ${LIBCLANG_DOWNLOAD_LOCATION})
# Used by FindClang
set(CLANG_ROOT ${DOWNLOADED_CLANG_DIR})
else()
message(STATUS "Using system libclang")
endif()
### Libraries
# See cmake/FindClang.cmake
find_package(Clang ${LIBCLANG_VERSION} REQUIRED)
target_link_libraries(ccls PRIVATE Clang::Clang)
# Enable threading support
set(THREADS_PREFER_PTHREAD_FLAG ON)
find_package(Threads REQUIRED)
target_link_libraries(ccls PRIVATE Threads::Threads)
if(${CMAKE_SYSTEM_NAME} STREQUAL Darwin)
target_link_libraries(ccls PRIVATE -lc++experimental)
elseif(MSVC)
else()
target_link_libraries(ccls PRIVATE -lstdc++fs)
endif()
if(${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
# sparsepp/spp_memory.h uses libkvm
# src/platform_posix.cc uses libthr
find_package(Backtrace REQUIRED)
target_link_libraries(ccls PRIVATE ${Backtrace_LIBRARIES} kvm thr)
elseif(${CMAKE_SYSTEM_NAME} STREQUAL Windows)
# sparsepp/spp_memory.h uses LibPsapi
target_link_libraries(ccls PRIVATE Psapi)
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/sparsepp
third_party/loguru
third_party/doctest
third_party/msgpack-c/include)
### Install
install(TARGETS ccls RUNTIME DESTINATION bin)
# TODO: install libclang.dll on Windows as well
if(NOT SYSTEM_LIBCLANG 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_LIBCLANG AND ${CMAKE_SYSTEM_NAME} STREQUAL Windows)
add_custom_command(TARGET ccls
POST_BUILD
COMMAND ${CMAKE_COMMAND} -E copy
${DOWNLOADED_CLANG_DIR}/bin/libclang.dll
$<TARGET_FILE_DIR:ccls>
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)
if(Clang_FORMAT AND ${Clang_VERSION} STREQUAL 6.0.0)
add_custom_target(format
COMMAND ${Clang_FORMAT} -i ${SOURCES}
# .clang-format is located in the ccls root project dir
WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
COMMENT "Running clang-format ...")
else()
# Set error message depending on which condition was false
if (NOT Clang_FORMAT)
set(Clang_FORMAT_ERROR "Error: clang-format executable not found")
elseif(NOT ${Clang_VERSION} STREQUAL 6.0.0)
set(Clang_FORMAT_ERROR "Error: clang-format version does not match \
6.0.0. Due to differences in clang-format output between versions we only \
support clang-format 6.0.0")
endif()
add_custom_target(format
COMMAND ${CMAKE_COMMAND} -E cmake_echo_color --red --bold
${Clang_FORMAT_ERROR})
endif()
### Sources
target_sources(ccls PRIVATE third_party/siphash.cc)
target_sources(ccls PRIVATE
src/cache_manager.cc
src/clang_complete.cc
src/clang_cursor.cc
src/clang_indexer.cc
src/clang_translation_unit.cc
src/clang_utils.cc
src/command_line.cc
src/config.cc
src/diagnostics_engine.cc
src/file_consumer.cc
src/filesystem.cc
src/fuzzy_match.cc
src/iindexer.cc
src/import_pipeline.cc
src/include_complete.cc
src/method.cc
src/lex_utils.cc
src/lsp.cc
src/match.cc
src/message_handler.cc
src/platform_posix.cc
src/platform_win.cc
src/port.cc
src/position.cc
src/project.cc
src/query_utils.cc
src/query.cc
src/queue_manager.cc
src/serializer.cc
src/standard_includes.cc
src/test.cc
src/third_party_impl.cc
src/timer.cc
src/timestamp_manager.cc
src/type_printer.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_derived.cc
src/messages/ccls_file_info.cc
src/messages/ccls_freshen_index.cc
src/messages/ccls_index_file.cc
src/messages/ccls_inheritance_hierarchy.cc
src/messages/ccls_member_hierarchy.cc
src/messages/ccls_random.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_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
)
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