mirror of
https://github.com/microsoft/vcpkg.git
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e79f0dc532
I added benchmarks to measure how fast the parallel remove_all code was
-- it turns out, about 3x slower than stdfs::remove_all. Since this was
the case, I removed all of the parallelism and rewrote it serially, and
ended up about 30% faster than stdfs::remove_all (in addition to
supporting symlinks).
In addition, I did the following three orthogonal changes:
- simplified the work queue, basing it on Billy O'Neal's idea
- Fix warnings on older versions of compilers in tests, by splitting
the pragmas out of pch.h.
- Ran clang-format on some files
In fixing up remove_all, the following changes were made:
- On Windows, regular symlinks and directory symlinks are distinct;
as an example, to remove directory symlinks (and junctions, for that
matter), one must use RemoveDirectory. Only on Windows, I added new
`file_type` and `file_status` types, with `file_type` including a new
`directory_symlink` enumerator, and `file_status` being exactly the
same as the old one except using the new `file_type`. On Unix, I
didn't make that change since they don't make a distinction.
- I added new `symlink_status` and `status` functions which use the
new `file_status` on Windows.
- I made `Filesystem::exists` call `fs::exists(status(p))`, as opposed
to the old version which called `stdfs::exists` directly.
- Added benchmarks to `vcpkg-test/files.cpp`. They test the
performance of `remove_all` on small directories (~20 files), with
symlinks and without, and on large directories (~2000 files), with
symlinks and without.
99 lines
3.2 KiB
CMake
99 lines
3.2 KiB
CMake
cmake_minimum_required(VERSION 3.3)
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project(vcpkg C CXX)
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OPTION(BUILD_TESTING "Option for enabling testing" ON)
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OPTION(VCPKG_BUILD_BENCHMARKING "Option for enabling benchmarking" OFF)
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OPTION(DEFINE_DISABLE_METRICS "Option for disabling metrics" OFF)
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OPTION(VCPKG_ALLOW_APPLE_CLANG "Option for allowing apple clang" OFF)
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if (DEFINE_DISABLE_METRICS)
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set(DISABLE_METRICS_VALUE "1")
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else()
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set(DISABLE_METRICS_VALUE "0")
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endif()
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if(CMAKE_COMPILER_IS_GNUXX OR CMAKE_CXX_COMPILER_ID MATCHES "GNU")
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set(GCC 1)
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elseif(CMAKE_CXX_COMPILER_ID MATCHES "AppleClang")
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if(NOT VCPKG_ALLOW_APPLE_CLANG)
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message(FATAL_ERROR
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"Building the vcpkg tool requires support for the C++ Filesystem TS.
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Apple clang versions 10.01 and below do not have support for it.
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Please install gcc6 or newer from homebrew (brew install gcc6).
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If you would like to try anyway, pass --allowAppleClang to bootstrap.sh.")
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else()
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set(CLANG 1)
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endif()
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elseif(CMAKE_CXX_COMPILER_ID MATCHES "[Cc]lang")
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set(CLANG 1)
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elseif(MSVC)
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add_compile_options(/std:c++17 /FC)
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else()
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message(FATAL_ERROR "Unknown compiler: ${CMAKE_CXX_COMPILER_ID}")
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endif()
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set(THREADS_PREFER_PTHREAD_FLAG ON)
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find_package(Threads REQUIRED)
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add_definitions(-DDISABLE_METRICS=${DISABLE_METRICS_VALUE})
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include_directories(include)
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link_libraries(Threads::Threads)
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if(CLANG)
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include(CheckCXXSourceCompiles)
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check_cxx_source_compiles("#include <iostream>
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int main() { return __GLIBCXX__; }" USES_LIBSTDCXX)
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check_cxx_source_compiles("#include <iostream>
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int main() { return _LIBCPP_VERSION; }" USES_LIBCXX)
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if ( NOT USES_LIBSTDCXX AND NOT USES_LIBCXX )
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message(FATAL_ERROR "Can't find which C++ runtime is in use")
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endif()
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endif()
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if(GCC OR (CLANG AND USES_LIBSTDCXX))
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link_libraries(stdc++fs)
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elseif(CLANG)
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link_libraries(c++fs)
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endif()
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if(GCC OR CLANG)
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add_compile_options(-std=c++1z)
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if(WERROR)
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add_compile_options(-Wall -Wno-unknown-pragmas -Werror)
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endif()
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endif()
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file(GLOB_RECURSE VCPKGLIB_SOURCES src/vcpkg/*.cpp)
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add_library(vcpkglib OBJECT ${VCPKGLIB_SOURCES})
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add_executable(vcpkg src/vcpkg.cpp $<TARGET_OBJECTS:vcpkglib>)
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if (BUILD_TESTING)
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file(GLOB_RECURSE VCPKGTEST_SOURCES src/vcpkg-test/*.cpp)
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enable_testing()
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add_executable(vcpkg-test
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${VCPKGTEST_SOURCES}
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$<TARGET_OBJECTS:vcpkglib>)
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add_test(NAME default COMMAND vcpkg-test [${TEST_NAME}])
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if (VCPKG_BUILD_BENCHMARKING)
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target_compile_options(vcpkg-test PRIVATE -DCATCH_CONFIG_ENABLE_BENCHMARKING)
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endif()
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endif()
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if(MSVC)
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get_target_property(_srcs vcpkg SOURCES)
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if(NOT CMAKE_GENERATOR MATCHES "Visual Studio .*")
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set_property(SOURCE src/pch.cpp APPEND PROPERTY OBJECT_OUTPUTS "${CMAKE_CURRENT_BINARY_DIR}/pch.pch")
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set_property(SOURCE ${_srcs} APPEND PROPERTY OBJECT_DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/pch.pch")
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endif()
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set_source_files_properties(src/pch.cpp PROPERTIES COMPILE_FLAGS "/Ycpch.h")
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target_sources(vcpkg PRIVATE src/pch.cpp)
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target_compile_options(vcpkg PRIVATE /Yupch.h /FIpch.h /Zm200)
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endif()
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