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https://github.com/MaskRay/ccls.git
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cmake: delete SYSTEM_CLANG and auto-download mechanism
This commit is contained in:
Fangrui Song
parent
343fa74dc1
commit
9bbb288b57
@ -15,7 +15,7 @@ install:
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- 7z x llvm.tar
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- git submodule update --init --recursive
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build_script:
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- cmake -G"Visual Studio 15 2017 Win64" -H. -Bbuild -DCMAKE_BUILD_TYPE=Release -DSYSTEM_CLANG=ON -DCLANG_ROOT=C:\projects\ccls\llvm+clang-7.0.0-win64-msvc-release
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- cmake -G"Visual Studio 15 2017 Win64" -H. -Bbuild -DCMAKE_BUILD_TYPE=Release -DCMAKE_PREFIX_PATH=C:\projects\ccls\llvm+clang-7.0.0-win64-msvc-release
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- cmake --build build --target ccls --config Release
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artifacts:
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@ -5,13 +5,7 @@ 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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set(CLANG_DOWNLOAD_LOCATION ${CMAKE_BINARY_DIR}
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CACHE STRING "Downloaded Clang location")
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option(SYSTEM_CLANG "Use system installation of Clang instead of \
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downloading Clang" OFF)
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option(ASAN "Compile with address sanitizers" OFF)
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option(LLVM_ENABLE_RTTI "-fno-rtti if OFF. This should match LLVM libraries" OFF)
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option(CLANG_USE_BUNDLED_LIBC++ "Let Clang use bundled libc++" OFF)
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option(USE_SHARED_LLVM "Link against libLLVM.so instead separate LLVM{Option,Support,...}" OFF)
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# Sources for the executable are specified at end of CMakeLists.txt
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@ -30,10 +24,7 @@ add_executable(ccls "")
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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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# Disable gnu extensions except for Cygwin which needs them to build properly
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if(NOT CYGWIN)
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set_property(TARGET ccls PROPERTY CXX_EXTENSIONS OFF)
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endif()
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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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@ -76,37 +67,6 @@ else()
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target_compile_options(ccls PRIVATE
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$<$<CONFIG:Debug>:-fno-limit-debug-info>)
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endif()
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if(ASAN)
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target_compile_options(ccls PRIVATE -fsanitize=address,undefined)
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# target_link_libraries also takes linker flags
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target_link_libraries(ccls PRIVATE -fsanitize=address,undefined)
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endif()
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endif()
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### Download Clang if required
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if(NOT SYSTEM_CLANG)
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message(STATUS "Using downloaded Clang")
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include(DownloadAndExtractClang)
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download_and_extract_clang(${CLANG_DOWNLOAD_LOCATION})
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# Used by FindClang
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set(CLANG_ROOT ${DOWNLOADED_CLANG_DIR})
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if(${CMAKE_CXX_COMPILER_ID} STREQUAL Clang AND CLANG_USE_BUNDLED_LIBC++)
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message(STATUS "Using bundled libc++")
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target_compile_options(ccls PRIVATE -nostdinc++ -cxx-isystem ${CLANG_ROOT}/include/c++/v1)
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if(${CMAKE_SYSTEM_NAME} STREQUAL Linux)
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# Don't use -stdlib=libc++ because while ccls is linked with libc++, bundled clang+llvm require libstdc++
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target_link_libraries(ccls PRIVATE -L${CLANG_ROOT}/lib c++ c++abi)
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# FreeBSD defaults to -stdlib=libc++ and uses system libcxxrt.a
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endif()
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endif()
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else()
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message(STATUS "Using system Clang")
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endif()
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### Libraries
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@ -143,31 +103,6 @@ target_include_directories(ccls SYSTEM PRIVATE
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install(TARGETS ccls RUNTIME DESTINATION bin)
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if(NOT SYSTEM_CLANG AND NOT ${CMAKE_SYSTEM_NAME} STREQUAL Windows)
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if(${CMAKE_SYSTEM_NAME} MATCHES Linux|FreeBSD)
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set_property(TARGET ccls APPEND PROPERTY
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INSTALL_RPATH $ORIGIN/../lib)
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elseif(${CMAKE_SYSTEM_NAME} STREQUAL Darwin)
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set_property(TARGET ccls APPEND PROPERTY
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INSTALL_RPATH @loader_path/../lib)
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endif()
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file(GLOB LIBCLANG_PLUS_SYMLINKS
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${DOWNLOADED_CLANG_DIR}/lib/libclang.[so,dylib]*)
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install(FILES ${LIBCLANG_PLUS_SYMLINKS} DESTINATION lib)
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endif()
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# Allow running from build Windows by copying libclang.dll to build directory
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if(NOT SYSTEM_CLANG AND ${CMAKE_SYSTEM_NAME} STREQUAL Windows)
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add_custom_command(TARGET ccls
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POST_BUILD
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COMMAND ${CMAKE_COMMAND} -E copy
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${DOWNLOADED_CLANG_DIR}/bin/libclang.dll
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$<TARGET_FILE_DIR:ccls>
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COMMENT "Copying libclang.dll to build directory ...")
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endif()
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### Tools
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# We use glob here since source files are already manually added with
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@ -1 +0,0 @@
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74b197a3959b0408adf0824be01db8dddfa2f9a967f4085af3fad900ed5fdbf6
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@ -1 +0,0 @@
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95ceb933ccf76e3ddaa536f41ab82c442bbac07cdea6f9fbf6e3b13cc1711255
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@ -1 +0,0 @@
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b3ad93c3d69dfd528df9c5bb1a434367babb8f3baea47fbb99bf49f1b03c94ca
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@ -1 +0,0 @@
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5c90e61b06d37270bc26edb305d7e498e2c7be22d99e0afd9f2274ef5458575a
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@ -1 +0,0 @@
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69b85c833cd28ea04ce34002464f10a6ad9656dd2bba0f7133536a9927c660d2
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@ -1,52 +0,0 @@
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# Downloads and extracts the 7-Zip MSI installer from https://www.7-zip.org/.
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#
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# Returns the extracted 7-Zip directory in DOWNLOADED_7ZIP_DIR
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function(download_and_extract_7zip 7ZIP_DOWNLOAD_LOCATION)
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set(7ZIP_VERSION 1801)
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set(7ZIP_EXT .msi)
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set(7ZIP_NAME 7z${7ZIP_VERSION}-x64)
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set(7ZIP_FULL_NAME ${7ZIP_NAME}${7ZIP_EXT})
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set(7ZIP_FILE ${7ZIP_DOWNLOAD_LOCATION}/${7ZIP_FULL_NAME})
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set(7ZIP_EXTRACT_DIR ${7ZIP_DOWNLOAD_LOCATION}/${7ZIP_NAME})
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set(7ZIP_URL https://www.7-zip.org/a/${7ZIP_FULL_NAME})
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# Exit if 7-Zip is already downloaded and extracted
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find_program(7ZIP_EXECUTABLE 7z NO_DEFAULT_PATH
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PATHS ${7ZIP_EXTRACT_DIR}/Files/7-Zip)
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if(7ZIP_EXECUTABLE)
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message(STATUS "7-Zip already downloaded")
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return()
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endif()
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message(STATUS "Downloading 7-Zip ${7ZIP_VERSION} (${7ZIP_URL}) ...")
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file(DOWNLOAD ${7ZIP_URL} ${7ZIP_FILE})
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find_program(MSIEXEC_EXECUTABLE msiexec)
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if(NOT MSIEXEC_EXECUTABLE)
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message(FATAL_ERROR "Unable to find msiexec (required to extract 7-Zip msi \
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installer). Install 7-Zip yourself and make sure it is available in the path")
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endif()
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message(STATUS "Extracting downloaded 7-Zip ...")
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# msiexec requires Windows path separators (\)
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file(TO_NATIVE_PATH ${7ZIP_FILE} 7ZIP_FILE)
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file(TO_NATIVE_PATH ${7ZIP_EXTRACT_DIR} 7ZIP_EXTRACT_DIR)
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# msiexec with /a option allows extraction of msi installers without requiring
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# admin privileges. We use this to extract the 7-Zip installer without
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# requiring any actions from the user
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execute_process(COMMAND ${MSIEXEC_EXECUTABLE} /a ${7ZIP_FILE} /qn
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TARGETDIR=${7ZIP_EXTRACT_DIR}
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WORKING_DIRECTORY ${7ZIP_DOWNLOAD_LOCATION}
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OUTPUT_QUIET)
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# Convert back to CMake separators (/) before returning
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file(TO_CMAKE_PATH ${7ZIP_EXTRACT_DIR} 7ZIP_EXTRACT_DIR)
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# Actual 7-Zip directory is nested inside the extract directory.
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set(DOWNLOADED_7ZIP_DIR ${7ZIP_EXTRACT_DIR}/Files/7-Zip PARENT_SCOPE)
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endfunction()
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@ -1,129 +0,0 @@
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# Downloads and extracts the Clang archive for the current system from
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# https://releases.llvm.org
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#
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# Returns the extracted Clang archive directory in DOWNLOADED_CLANG_DIR
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#
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# Downloads 7-Zip to extract Clang if it isn't available in the PATH
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function(download_and_extract_clang CLANG_DOWNLOAD_LOCATION)
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set(CLANG_VERSION 7.0.0)
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set(CLANG_ARCHIVE_EXT .tar.xz)
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if(${CMAKE_SYSTEM_NAME} STREQUAL Linux)
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# Default to Ubuntu 16.04
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set(CLANG_ARCHIVE_NAME
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clang+llvm-${CLANG_VERSION}-x86_64-linux-gnu-ubuntu-16.04)
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elseif(${CMAKE_SYSTEM_NAME} STREQUAL Darwin)
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set(CLANG_ARCHIVE_NAME clang+llvm-${CLANG_VERSION}-x86_64-apple-darwin)
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elseif(${CMAKE_SYSTEM_NAME} STREQUAL Windows)
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set(CLANG_ARCHIVE_NAME LLVM-${CLANG_VERSION}-win64)
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set(CLANG_ARCHIVE_EXT .exe)
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elseif(${CMAKE_SYSTEM_NAME} STREQUAL FreeBSD)
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set(CLANG_ARCHIVE_NAME clang+llvm-${CLANG_VERSION}-amd64-unknown-freebsd11)
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endif()
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set(CLANG_ARCHIVE_FULL_NAME ${CLANG_ARCHIVE_NAME}${CLANG_ARCHIVE_EXT})
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set(CLANG_ARCHIVE_FILE ${CLANG_DOWNLOAD_LOCATION}/${CLANG_ARCHIVE_FULL_NAME})
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set(CLANG_ARCHIVE_EXTRACT_DIR ${CLANG_DOWNLOAD_LOCATION}/${CLANG_ARCHIVE_NAME})
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set(CLANG_ARCHIVE_URL
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https://releases.llvm.org/${CLANG_VERSION}/${CLANG_ARCHIVE_FULL_NAME})
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set(CLANG_ARCHIVE_HASH_FILE
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${CMAKE_SOURCE_DIR}/clang_archive_hashes/${CLANG_ARCHIVE_FULL_NAME}.SHA256)
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# Exit if Clang is already downloaded and extracted
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set(CLANG_ROOT ${CLANG_ARCHIVE_EXTRACT_DIR})
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find_package(Clang ${CLANG_VERSION} QUIET)
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if(Clang_FOUND)
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message(STATUS "Clang already downloaded")
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set(DOWNLOADED_CLANG_DIR ${CLANG_ARCHIVE_EXTRACT_DIR} PARENT_SCOPE)
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return()
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endif()
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if(NOT CLANG_ARCHIVE_NAME)
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message(FATAL_ERROR "No Clang archive url specified for current platform \
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(${CMAKE_SYSTEM_NAME}). Please file an issue to get it added.")
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endif()
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if(NOT EXISTS ${CLANG_ARCHIVE_HASH_FILE})
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message(FATAL_ERROR "No SHA256 hash available for the current platform \
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(${CMAKE_SYSTEM_NAME}) + clang version (${CLANG_VERSION}) combination. Please \
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file an issue to get it added.")
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endif()
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# Download Clang archive
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message(STATUS "Downloading Clang ${CLANG_VERSION} (${CLANG_ARCHIVE_URL}) ...")
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file(DOWNLOAD ${CLANG_ARCHIVE_URL} ${CLANG_ARCHIVE_FILE}
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STATUS CLANG_ARCHIVE_DOWNLOAD_RESULT)
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# Abort if download failed
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list(GET ${CLANG_ARCHIVE_DOWNLOAD_RESULT} 0 ERROR_CODE)
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if(${ERROR_CODE})
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list(GET ${CLANG_ARCHIVE_DOWNLOAD_RESULT} 1 ERROR_STRING)
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message(FATAL_ERROR ${ERROR_STRING})
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endif()
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# Retrieve expected hash from file and strip newline
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file(READ ${CLANG_ARCHIVE_HASH_FILE} CLANG_ARCHIVE_EXPECTED_HASH)
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string(STRIP ${CLANG_ARCHIVE_EXPECTED_HASH} CLANG_ARCHIVE_EXPECTED_HASH)
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# Calculate actual hash
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file(SHA256 ${CLANG_ARCHIVE_FILE} CLANG_ARCHIVE_HASH)
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# Abort if hashes do not match
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if(NOT ${CLANG_ARCHIVE_EXPECTED_HASH} STREQUAL ${CLANG_ARCHIVE_HASH})
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message(FATAL_ERROR "SHA256 hash of downloaded Clang does not match \
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expected hash. Remove the build directory and try running CMake again. If this \
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keeps happening, file an issue to report the problem.")
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endif()
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if(${CLANG_ARCHIVE_EXT} STREQUAL .exe)
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# Download and extract 7-zip if not found in PATH
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find_program(7ZIP_EXECUTABLE 7z)
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if(NOT 7ZIP_EXECUTABLE)
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message(STATUS "7-Zip not found in PATH")
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include(DownloadAndExtract7zip)
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download_and_extract_7zip(${CLANG_DOWNLOAD_LOCATION})
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find_program(7ZIP_EXECUTABLE
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NAMES 7z
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NO_DEFAULT_PATH
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PATHS ${DOWNLOADED_7ZIP_DIR}
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)
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else()
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message(STATUS "7-Zip found in PATH")
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endif()
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message(STATUS "Extracting downloaded Clang with 7-Zip ...")
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# Avoid running the Clang installer by extracting the exe with 7-Zip
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execute_process(
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COMMAND ${7ZIP_EXECUTABLE} x
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-o${CLANG_ARCHIVE_EXTRACT_DIR}
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-xr!$PLUGINSDIR ${CLANG_ARCHIVE_FILE}
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WORKING_DIRECTORY ${CLANG_DOWNLOAD_LOCATION}
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OUTPUT_QUIET
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)
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elseif(${CLANG_ARCHIVE_EXT} STREQUAL .tar.xz)
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message(STATUS "Extracting downloaded Clang with CMake built-in tar ...")
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# CMake has builtin support for tar via the -E flag
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execute_process(
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COMMAND ${CMAKE_COMMAND} -E tar -xf ${CLANG_ARCHIVE_FILE}
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# Specify working directory to allow running cmake from
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# everywhere
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# (example: cmake -H"$HOME/cquery" -B"$home/cquery/build")
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WORKING_DIRECTORY ${CLANG_DOWNLOAD_LOCATION}
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OUTPUT_QUIET
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)
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endif()
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set(DOWNLOADED_CLANG_DIR ${CLANG_ARCHIVE_EXTRACT_DIR} PARENT_SCOPE)
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endfunction()
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