在 Visual Studio 上创建 Google 的 CRC32C

Question

正如标题所说。我正在尝试编译找到的代码 on Google's Github。我对 CMake 了解不多。首先，我运行按照说明执行以下命令：

git submodule update --init --recursive

我收到以下错误消息：fatal: not a git repository (or any of the parent directories): .git。之后我尝试运行以下构建命令：

cmake -DCRC32C_BUILD_TESTS=0 -DCRC32C_BUILD_BENCHMARKS=0 .. && make all install

输出如下图：

l install
-- Building for: Visual Studio 16 2019
-- The C compiler identification is MSVC 19.22.27905.0
-- The CXX compiler identification is MSVC 19.22.27905.0
-- Check for working C compiler: C:/Program Files (x86)/Microsoft Visual Studio/2019/Community/VC/Tools/MSVC/14.22.27905/bin/Hostx64/x64/cl.exe
-- Check for working C compiler: C:/Program Files (x86)/Microsoft Visual Studio/2019/Community/VC/Tools/MSVC/14.22.27905/bin/Hostx64/x64/cl.exe -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Check for working CXX compiler: C:/Program Files (x86)/Microsoft Visual Studio/2019/Community/VC/Tools/MSVC/14.22.27905/bin/Hostx64/x64/cl.exe
-- Check for working CXX compiler: C:/Program Files (x86)/Microsoft Visual Studio/2019/Community/VC/Tools/MSVC/14.22.27905/bin/Hostx64/x64/cl.exe -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Check if the system is big endian
-- Searching 16 bit integer
-- Looking for sys/types.h
-- Looking for sys/types.h - found
-- Looking for stdint.h
-- Looking for stdint.h - found
-- Looking for stddef.h
-- Looking for stddef.h - found
-- Check size of unsigned short
-- Check size of unsigned short - done
-- Using unsigned short
-- Check if the system is big endian - little endian
-- Performing Test CRC32C_HAVE_NO_DEPRECATED
-- Performing Test CRC32C_HAVE_NO_DEPRECATED - Failed
-- Performing Test CRC32C_HAVE_NO_SIGN_COMPARE
-- Performing Test CRC32C_HAVE_NO_SIGN_COMPARE - Failed
-- Performing Test CRC32C_HAVE_NO_UNUSED_PARAMETER
-- Performing Test CRC32C_HAVE_NO_UNUSED_PARAMETER - Failed
-- Performing Test CRC32C_HAVE_NO_MISSING_FIELD_INITIALIZERS
-- Performing Test CRC32C_HAVE_NO_MISSING_FIELD_INITIALIZERS - Failed
-- Performing Test HAVE_BUILTIN_PREFETCH
-- Performing Test HAVE_BUILTIN_PREFETCH - Failed
-- Performing Test HAVE_MM_PREFETCH
-- Performing Test HAVE_MM_PREFETCH - Success
-- Performing Test HAVE_SSE42
-- Performing Test HAVE_SSE42 - Success
-- Performing Test HAVE_ARM64_CRC32C
-- Performing Test HAVE_ARM64_CRC32C - Failed
-- Performing Test HAVE_STRONG_GETAUXVAL
-- Performing Test HAVE_STRONG_GETAUXVAL - Failed
-- Performing Test HAVE_WEAK_GETAUXVAL
-- Performing Test HAVE_WEAK_GETAUXVAL - Failed
CMake Error at CMakeLists.txt:184 (add_subdirectory):
  The source directory

    C:/Source/crc32c-master/third_party/glog

  does not contain a CMakeLists.txt file.


-- Configuring incomplete, errors occurred!
See also "C:/Source/crc32c-master/build/CMakeFiles/CMakeOutput.log".
See also "C:/Source/crc32c-master/build/CMakeFiles/CMakeError.log".

我查看了错误日志，但没有得到太多帮助。 third_party/glog 目录是空的，因此没有任何 CMakeLists.txt 文件应该存在。（/third_party 下的 /benchmark 和 /googletest 子目录也是空的。？）

是否有人使用 Visual Studio 成功构建了这个？如果是，怎么做？

我认为这并不重要，但我使用的是 VS2019 Community Edition 16.2.5 和 CMake 3.15.2。 TIA.

Answer 1

Alan Birtles 给了我正确的答案。

我刚刚下载了 .zip 文件，当时我需要对文件进行 git clone。在那之后，一切都按预期进行。非常感谢 Alan Birtles。

在 Visual Studio 上创建 Google 的 CRC32C

Creating Google's CRC32C on Visual Studio

c++

crc

visual-studio-code