New submission from Ivan Pozdeev <ivan_pozd...@mail.ru>: (the output is for 2.7 head; for master, it's the same save for paths, library versions and DeprecationWarning's)
>python.bat -m ensurepip Running Debug|x64 interpreter... Looking in links: c:\users\sasha\appdata\local\temp\tmpiysoby Collecting setuptools Collecting pip Installing collected packages: setuptools, pip Successfully installed pip-10.0.1 setuptools-39.0.1 >python.bat -m pip install scandir Running Debug|x64 interpreter... Collecting scandir Using cached https://files.pythonhosted.org/packages/13/bb/e541b74230bbf7a20a3949a2ee6631be299378a784f5445aa5d0047c192b/scandir-1.7.tar.gz Installing collected packages: scandir Running setup.py install for scandir ... error Complete output from command C:\Users\Sasha\Documents\cpython\PCBuild\amd64\python_d.exe -u -c "import setuptools, tokenize;__file__='c:\\users\\sasha\\appdata\\local\\temp\\pip-install-xafnbn\\scandir\\setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record c:\users\sasha\appdata\local\temp\pip-record-gbe0kk\install-record.txt --single-version-externally-managed --compile: running install running build running build_py creating build creating build\lib.win-amd64-2.7-pydebug copying scandir.py -> build\lib.win-amd64-2.7-pydebug running build_ext building '_scandir' extension creating build\temp.win-amd64-2.7-pydebug creating build\temp.win-amd64-2.7-pydebug\Release c:\Program Files (x86)\Microsoft Visual Studio 9.0\VC\BIN\amd64\cl.exe /c /nologo /Ox /MD /W3 /GS- /DNDEBUG -IC:\Users\Sasha\Documents\cpython\include -IC:\Users\Sasha\Documents\cpython\PC /Tc_scandir.c /Fobuild\temp.win-amd64-2.7-pydebug\Release\_scandir.obj _scandir.c c:\Program Files (x86)\Microsoft Visual Studio 9.0\VC\BIN\amd64\link.exe /DLL /nologo /INCREMENTAL:NO /LIBPATH:C:\Users\Sasha\Documents\cpython\libs /LIBPATH:C:\Users\Sasha\Documents\cpython\PCbuild\amd64 /LIBPATH:C:\Users\Sasha\Documents\cpython\PC\VS9.0\amd64 /EXPORT:init_scandir build\temp.win-amd64-2.7-pydebug\Release\_scandir.obj /OUT:build\lib.win-amd64-2.7-pydebug\_scandir.pyd /IMPLIB:build\temp.win-amd64-2.7-pydebug\Release\_scandir.lib /MANIFESTFILE:build\temp.win-amd64-2.7-pydebug\Release\_scandir.pyd.manifest LINK : fatal error LNK1104: cannot open file 'python27.lib' error: command 'c:\\Program Files (x86)\\Microsoft Visual Studio 9.0\\VC\\BIN\\amd64\\link.exe' failed with exit status 1104 ---------------------------------------- Command "C:\Users\Sasha\Documents\cpython\PCBuild\amd64\python_d.exe -u -c "import setuptools, tokenize;__file__='c:\\users\\sasha\\appdata\\local\\temp\\pip-install-xafnbn\\scandir\\setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record c:\users\sasha\appdata\local\temp\pip-record-gbe0kk\install-record.txt --single-version-externally-managed --compile" failed with error code 1 in c:\users\sasha\appdata\local\temp\pip-install-xafnbn\scandir\ The cause is that distutils' `build_ext` looks at the --debug switch instead of the running Python to decide which Python runtime to link against. A workaround is thus to run setup.py by hand with the --debug switch. Suggested fix is to split compiler options into optimization options and linking options and: * for debug Python, build without optimizations and against debug C runtime + Python runtime regardless of --debug * for release Python, * build without optimizations but against release C runtime + Python runtime with --debug Rationale: * It doesn't make sense to try to build against a different runtime than the running Python -- this will always fail because include/lib paths, preprocessor directives and such that build_ext generates is for the running Python. * Must build against the same C runtime that Python uses in any case since using two different runtimes will break things, especially in 2.7 that relies on stdio. * Building an extension without optimizations will allow to diagnose problems in it. Debug facilities of the runtime like malloc tracking and probably tracing will not work, but at least one will see all the variables and call hierarchy. ---------- components: Distutils messages: 317589 nosy: Ivan.Pozdeev, dstufft, eric.araujo priority: normal severity: normal status: open title: pip cannot build extensions for debug Python type: behavior versions: Python 2.7, Python 3.6, Python 3.7, Python 3.8 _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue33637> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
