【发布时间】：2021-04-28 19:58:47
【问题描述】：
我正在尝试使用 vcpkg 安装 cgal。在那之前我没有vcpkg并通过git安装它，所以这是我的第一个包（如果我理解正确的话）。而且我不知道引导过程是什么，也没有尝试安装其他软件包。
我在终端出现这个错误：
Error: vcpkg was unable to detect the active compiler's information. See above for the CMake failure output.
运行后：
./vcpkg.exe install cgal:x64-windows
我试图弄清楚 CMake 是什么，我需要单独安装它。但是如果我理解正确的话，它是在这个过程中安装的，因为在'./vcpkg/downloads'中有'ZIP-file cmake-3.20.1-windows-i386'。
我需要安装这个 cgal 才能正确运行 Python 库中的某些函数，所以我不完全理解发生了什么。我试图用谷歌搜索这个问题，但没有找到任何可行的方法。我通过pip安装的python库，库名是gudhi。在日志中我看到了这个：
The system cannot find the path specified.
ninja: build stopped: subcommand failed.
什么路径？编译器？但它是什么？
完整的日志如下所示（我更改了路径名称，因为它们太长了）：
[1/1] cmd /c "cd .. && "../Documents/GitHub/vcpkg/downloads/tools/cmake-3.20.1-windows/cmake-3.20.1-windows-i386/bin/cmake.exe" "../Documents/GitHub/vcpkg/scripts/detect_compiler" "-DCMAKE_MAKE_PROGRAM=../Documents/GitHub/vcpkg/downloads/tools/ninja/1.10.1-windows/ninja.exe" "-DBUILD_SHARED_LIBS=ON" "-DVCPKG_CHAINLOAD_TOOLCHAIN_FILE=../Documents/GitHub/vcpkg/scripts/toolchains/windows.cmake" "-DVCPKG_TARGET_TRIPLET=x64-windows" "-DVCPKG_SET_CHARSET_FLAG=ON" "-DVCPKG_PLATFORM_TOOLSET=v142" "-DCMAKE_EXPORT_NO_PACKAGE_REGISTRY=ON" "-DCMAKE_FIND_PACKAGE_NO_PACKAGE_REGISTRY=ON" "-DCMAKE_FIND_PACKAGE_NO_SYSTEM_PACKAGE_REGISTRY=ON" "-DCMAKE_INSTALL_SYSTEM_RUNTIME_LIBS_SKIP=TRUE" "-DCMAKE_VERBOSE_MAKEFILE=ON" "-DVCPKG_APPLOCAL_DEPS=OFF" "-DCMAKE_TOOLCHAIN_FILE=../Documents/GitHub/vcpkg/scripts/buildsystems/vcpkg.cmake" "-DCMAKE_ERROR_ON_ABSOLUTE_INSTALL_DESTINATION=ON" "-DVCPKG_CXX_FLAGS=" "-DVCPKG_CXX_FLAGS_RELEASE=" "-DVCPKG_CXX_FLAGS_DEBUG=" "-DVCPKG_C_FLAGS=" "-DVCPKG_C_FLAGS_RELEASE=" "-DVCPKG_C_FLAGS_DEBUG=" "-DVCPKG_CRT_LINKAGE=dynamic" "-DVCPKG_LINKER_FLAGS=" "-DVCPKG_LINKER_FLAGS_RELEASE=" "-DVCPKG_LINKER_FLAGS_DEBUG=" "-DVCPKG_TARGET_ARCHITECTURE=x64" "-DCMAKE_INSTALL_LIBDIR:STRING=lib" "-DCMAKE_INSTALL_BINDIR:STRING=bin" "-D_VCPKG_ROOT_DIR=../Documents/GitHub/vcpkg" "-D_VCPKG_INSTALLED_DIR=../Documents/GitHub/vcpkg/installed" "-DVCPKG_MANIFEST_INSTALL=OFF" "-G" "Ninja" "-DCMAKE_BUILD_TYPE=Release" "-DCMAKE_INSTALL_PREFIX=../Documents/GitHub/vcpkg/packages/detect_compiler_x64-windows""
FAILED: ../CMakeCache.txt
cmd /c "cd .. && "../Documents/GitHub/vcpkg/downloads/tools/cmake-3.20.1-windows/cmake-3.20.1-windows-i386/bin/cmake.exe" "../Documents/GitHub/vcpkg/scripts/detect_compiler" "-DCMAKE_MAKE_PROGRAM=../Documents/GitHub/vcpkg/downloads/tools/ninja/1.10.1-windows/ninja.exe" "-DBUILD_SHARED_LIBS=ON" "-DVCPKG_CHAINLOAD_TOOLCHAIN_FILE=../Documents/GitHub/vcpkg/scripts/toolchains/windows.cmake" "-DVCPKG_TARGET_TRIPLET=x64-windows" "-DVCPKG_SET_CHARSET_FLAG=ON" "-DVCPKG_PLATFORM_TOOLSET=v142" "-DCMAKE_EXPORT_NO_PACKAGE_REGISTRY=ON" "-DCMAKE_FIND_PACKAGE_NO_PACKAGE_REGISTRY=ON" "-DCMAKE_FIND_PACKAGE_NO_SYSTEM_PACKAGE_REGISTRY=ON" "-DCMAKE_INSTALL_SYSTEM_RUNTIME_LIBS_SKIP=TRUE" "-DCMAKE_VERBOSE_MAKEFILE=ON" "-DVCPKG_APPLOCAL_DEPS=OFF" "-DCMAKE_TOOLCHAIN_FILE=../Documents/GitHub/vcpkg/scripts/buildsystems/vcpkg.cmake" "-DCMAKE_ERROR_ON_ABSOLUTE_INSTALL_DESTINATION=ON" "-DVCPKG_CXX_FLAGS=" "-DVCPKG_CXX_FLAGS_RELEASE=" "-DVCPKG_CXX_FLAGS_DEBUG=" "-DVCPKG_C_FLAGS=" "-DVCPKG_C_FLAGS_RELEASE=" "-DVCPKG_C_FLAGS_DEBUG=" "-DVCPKG_CRT_LINKAGE=dynamic" "-DVCPKG_LINKER_FLAGS=" "-DVCPKG_LINKER_FLAGS_RELEASE=" "-DVCPKG_LINKER_FLAGS_DEBUG=" "-DVCPKG_TARGET_ARCHITECTURE=x64" "-DCMAKE_INSTALL_LIBDIR:STRING=lib" "-DCMAKE_INSTALL_BINDIR:STRING=bin" "-D_VCPKG_ROOT_DIR=../Documents/GitHub/vcpkg" "-D_VCPKG_INSTALLED_DIR=../Documents/GitHub/vcpkg/installed" "-DVCPKG_MANIFEST_INSTALL=OFF" "-G" "Ninja" "-DCMAKE_BUILD_TYPE=Release" "-DCMAKE_INSTALL_PREFIX=../Documents/GitHub/vcpkg/packages/detect_compiler_x64-windows""
The system cannot find the path specified.
ninja: build stopped: subcommand failed.
【问题讨论】：
-
你在使用 msvc 和 vcpkg 吗？我问是因为默认的三元组是使用 msvc 和 32 位构建的
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@drescherjm msvc 安装在我的电脑上，但我从未使用过
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@drescherjm 如果我理解正确的话，我已经添加了一些关于版本的信息。因为我试图为我的 x64 windows 版本安装 cgal
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您对自己所做的事情和发生的事情并没有说太多。您是否已经拥有 vcpkg 或者这是您尝试安装的第一个软件包？您是否运行了引导过程？安装一些随机的其他软件包是否有效？你安装了视觉工作室吗？等等。并且在某处提供完整的日志也可能有所帮助，而不仅仅是复制 2 行。另外，你的 python 包不存在预编译版本（pip、conda）吗？这样就不需要安装 CGAL。
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从github.com/microsoft/vcpkg，在
git clone https://github.com/microsoft/vcpkg之后，在所有.\vcpkg\vcpkg install stuff之前有.\vcpkg\bootstrap-vcpkg.bat（这就是我所说的引导）。