python pip install openexr语法错误->如何指定C ++编译器供pip使用？

我正在尝试将OpenEXR的python绑定安装（编译）到我的模块。首先，我简单地尝试了pip install openexr，这是由于C ++安装的OpenEXR缺少头文件而导致的错误。因此，我通过它安装了vcpkg和OpenEXR。由于来自Python绑定的OpenEXR.cpp中的语法错误，执行pip install --global-option=build_ext --global-option="-IC:\vcpkg\packages\openexr_x86-windows\include\OpenEXR" --global-option="-LC:\vcpkg\packages\openexr_x86-windows\lib" openexr失败。我从https://pypi.org/project/OpenEXR/#files手动下载了该模块，并尝试安装/编译该模块，这在同一文件中导致相同的语法错误。我的Visual Studio在文件中没有发现任何问题，因此我认为问题一定是pip用于安装该模块的C ++编译器。我已经安装了构建工具2019，并添加了2017构建工具，但它无济于事。我想我必须指定要使用的编译器，但是在这里我找不到任何有关这样做的示例...

我的问题：您如何指定编译器使用哪个pip来安装模块？

Windows 10
Python 3.8.0
已安装VC 2019 C ++ x64 / x86 Buildtools
已安装VC 2017 C ++ x64 / x86 Buildtools
通过vcpkg安装的OpenEXR（C ++）

编辑：

语法错误

C:\Users\alexa\PycharmProjects\Test\venv\lib\site-packages\pip-19.0.3-py3.8.egg\pip\_internal\commands\install.py:207: UserWarning: Disabling all use of wheels due to the use of --build-options / --global-options / --install-options.
  cmdoptions.check_install_build_global(options)
Collecting openexr
  Using cached https://files.pythonhosted.org/packages/7c/c4/76bf884f59d3137847edf8b93aaf40f6257d8315d0064e8b1a606ad80b1b/OpenEXR-1.3.2.tar.gz
Installing collected packages: openexr
  Running setup.py install for openexr ... error
    Complete output from command C:\Users\alexa\PycharmProjects\Test\venv\Scripts\python.exe -u -c "import setuptools,tokenize;__file__='C:\\Users\\alexa\\AppData\\Local\\Temp\\pip-install-81q20tqc\\openexr\\setup.py';f=getattr(tokenize,'open',open)(__file__);code=f.read().replace('\r\n','\n');f.close();exec(compile(code,__file__,'exec'))" build_ext -IC:\vcpkg\packages\openexr_x86-windows\include\OpenEXR -LC:\vcpkg\packages\openexr_x86-windows\lib install --record C:\Users\alexa\AppData\Local\Temp\pip-record-gjbp0u64\install-record.txt --single-version-externally-managed --compile --install-headers C:\Users\alexa\PycharmProjects\Test\venv\include\site\python3.8\openexr:
    running build_ext
    building 'OpenEXR' extension
    creating build
    creating build\temp.win32-3.8
    creating build\temp.win32-3.8\Release
    C:\Program Files (x86)\microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.21.27702\bin\HostX86\x86\cl.exe /c /nologo /Ox /W3 /GL /DNDEBUG /MD -I/usr/include/OpenEXR -I/usr/local/include/OpenEXR -I/opt/local/include/OpenEXR -IC:\vcpkg\packages\openexr_x86-windows\include\OpenEXR -IC:\Users\alexa\PycharmProjects\Test\venv\include -IC:\Users\alexa\AppData\Local\Programs\Python\Python38-32\include -IC:\Users\alexa\AppData\Local\Programs\Python\Python38-32\include "-IC:\Program Files (x86)\microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.21.27702\ATLMFC\include" "-IC:\Program Files (x86)\microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.21.27702\include" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\ucrt" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\shared" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\um" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\winrt" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\cppwinrt" /EHsc /TpOpenEXR.cpp /Fobuild\temp.win32-3.8\Release\OpenEXR.obj -g -DVERSION="1.3.2"
    cl : Command line warning D9002 : ignoring unknown option '-g'
    OpenEXR.cpp
    OpenEXR.cpp(1011): warning C4244: 'argument': conversion from 'double' to 'const T',possible loss of data
            with
            [
                T=float
            ]
    OpenEXR.cpp(1025): warning C4244: 'argument': conversion from 'double' to 'T',possible loss of data
            with
            [
                T=float
            ]
    OpenEXR.cpp(1024): warning C4244: 'argument': conversion from 'double' to 'T',possible loss of data
            with
            [
                T=float
            ]
    OpenEXR.cpp(1027): warning C4244: 'argument': conversion from 'double' to 'T',possible loss of data
            with
            [
                T=float
            ]
    OpenEXR.cpp(1026): warning C4244: 'argument': conversion from 'double' to 'T',possible loss of data
            with
            [
                T=float
            ]
    OpenEXR.cpp(1035): warning C4244: 'argument': conversion from 'double' to 'T',possible loss of data
            with
            [
                T=float
            ]
    OpenEXR.cpp(1082): warning C4244: 'argument': conversion from 'double' to 'T',possible loss of data
            with
            [
                T=float
            ]
    OpenEXR.cpp(1081): warning C4244: 'argument': conversion from 'double' to 'T',possible loss of data
            with
            [
                T=float
            ]
    OpenEXR.cpp(1084): warning C4244: 'argument': conversion from 'double' to 'T',possible loss of data
            with
            [
                T=float
            ]
    OpenEXR.cpp(1083): warning C4244: 'argument': conversion from 'double' to 'T',possible loss of data
            with
            [
                T=float
            ]
    OpenEXR.cpp(1086): warning C4244: 'argument': conversion from 'double' to 'T',possible loss of data
            with
            [
                T=float
            ]
    OpenEXR.cpp(1085): warning C4244: 'argument': conversion from 'double' to 'T',possible loss of data
            with
            [
                T=float
            ]
    OpenEXR.cpp(1088): warning C4244: 'argument': conversion from 'double' to 'T',possible loss of data
            with
            [
                T=float
            ]
    OpenEXR.cpp(1087): warning C4244: 'argument': conversion from 'double' to 'T',possible loss of data
            with
            [
                T=float
            ]
    OpenEXR.cpp(1241): error C2143: syntax error: missing ')' before 'constant'
    OpenEXR.cpp(1241): error C2664: 'PyObject *PyBytes_FromString(const char *)': cannot convert argument 1 from 'double' to 'const char *'
    OpenEXR.cpp(1241): error C2660: 'PyDict_SetItemString': function does not take 2 arguments
    C:\Users\alexa\AppData\Local\Programs\Python\Python38-32\include\dictobject.h(58): note: see declaration of 'PyDict_SetItemString'
    OpenEXR.cpp(1241): error C2143: syntax error: missing ';' before 'constant'
    OpenEXR.cpp(1241): error C2059: syntax error: ')'
    error: command 'C:\\Program Files (x86)\\microsoft Visual Studio\\2019\\Community\\VC\\Tools\\MSVC\\14.21.27702\\bin\\HostX86\\x86\\cl.exe' failed with exit status 2

    ----------------------------------------

编辑

您可以在https://www.lfd.uci.edu/~gohlke/pythonlibs/上找到针对python 3和2的OpenEXR绑定的二进制文件。无论如何，为了点子，如果有人知道如何调整点子完成的编译过程以使其起作用，请分享..

根本不使用 pip 。不确定您要做什么实际上是可行的（该项目显然与Python 3.8不兼容），但是如果您要自定义C扩展的编译，请首先跳过 pip 并直接使用python setup.py build_ext的选项。在此取得进展后，最终可以通过--global-options返回使用点子。

例如，以下是我的情况下可用的选项：

$ ./setup.py build_ext --help
Common commands: (see '--help-commands' for more)

  setup.py build      will build the package underneath 'build/'
  setup.py install    will install the package

Global options:
  --verbose (-v)  run verbosely (default)
  --quiet (-q)    run quietly (turns verbosity off)
  --dry-run (-n)  don't actually do anything
  --help (-h)     show detailed help message
  --no-user-cfg   ignore pydistutils.cfg in your home directory

Options for 'build_ext' command:
  --build-lib (-b)     directory for compiled extension modules
  --build-temp (-t)    directory for temporary files (build by-products)
  --plat-name (-p)     platform name to cross-compile for,if supported
                       (default: linux-x86_64)
  --inplace (-i)       ignore build-lib and put compiled extensions into the
                       source directory alongside your pure Python modules
  --include-dirs (-I)  list of directories to search for header files
                       (separated by ':')
  --define (-D)        C preprocessor macros to define
  --undef (-U)         C preprocessor macros to undefine
  --libraries (-l)     external C libraries to link with
  --library-dirs (-L)  directories to search for external C libraries
                       (separated by ':')
  --rpath (-R)         directories to search for shared C libraries at runtime
  --link-objects (-O)  extra explicit link objects to include in the link
  --debug (-g)         compile/link with debugging information
  --force (-f)         forcibly build everything (ignore file timestamps)
  --compiler (-c)      specify the compiler type
  --parallel (-j)      number of parallel build jobs
  --swig-cpp           make SWIG create C++ files (default is C)
  --swig-opts          list of SWIG command line options
  --swig               path to the SWIG executable
  --user               add user include,library and rpath
  --help-compiler      list available compilers

usage: setup.py [global_opts] cmd1 [cmd1_opts] [cmd2 [cmd2_opts] ...]
   or: setup.py --help [cmd1 cmd2 ...]
   or: setup.py --help-commands
   or: setup.py cmd --help

一些相关文档在这里：

https://docs.python.org/3/distutils/apiref.html

python pip install openexr语法错误->如何指定C ++编译器供pip使用？

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