On Wed, Jan 30, 2019 at 6:32 PM Ralf Gommers <ralf.gomm...@gmail.com> wrote:
> > > On Wed, Jan 30, 2019 at 5:19 PM Charles R Harris < > charlesr.har...@gmail.com> wrote: > >> >> >> On Wed, Jan 30, 2019 at 5:28 PM Marc F Paterno <pate...@fnal.gov> wrote: >> >>> Hello, >>> >>> I have encountered a problem with a binary incompatibility between the >>> Fortran runtime library installed with numpy when using 'pip install --user >>> numpy', and that used by the rest of my program, which is built using >>> gfortran from GCC 8.2. The numpy installation uses libgfortran.5.dylib, >>> and GCC 8.2 provides libgfortran.5.dylib. >>> >>> While investigating the source of this problem, I downloaded the numpy >>> source >>> ( >>> https://files.pythonhosted.org/packages/04/b6/d7faa70a3e3eac39f943cc6a6a64ce378259677de516bd899dd9eb8f9b32/numpy-1.16.0.zip >>> ), >>> and tried building it. The resulting libraries have no coupling to any >>> Fortran library that I can find. I can find no Fortran source code files >>> in the numpy source, >>> except in tests or documentation. >>> >>> I am working on a MacBook laptop, running macOS Mojave, and so am using >>> the Accelerate framework to supply BLAS. >>> >>> I do not understand why the pip installation of numpy includes a Fortran >>> runtime library. Can someone explain to me what I am missing? >>> >>> >> That's interesting, it looks like the wheel includes four libraries: >> >> -rw-r--r--. 1 charris charris 273072 Jan 1 1980 libgcc_s.1.dylib >> -rwxr-xr-x. 1 charris charris 1550456 Jan 1 1980 libgfortran.3.dylib >> -rwxr-xr-x. 1 charris charris 63433364 Jan 1 1980 >> libopenblasp-r0.3.5.dev.dylib >> -rwxr-xr-x. 1 charris charris 279932 Jan 1 1980 libquadmath.0.dylib >> >> I thought we only needed the openblas, but that in turn probably depends >> on libgcc. But why we have the fortran library and quadmath escapes me. >> Perhaps someone else knows. >> > > I suspect it's a leftover from when we were using ATLAS, we did need a > Fortran runtime library at some point. The cause will be somewhere in the > numpy-wheel build scripts, there is a gfortran-install git submodule: > https://github.com/MacPython/numpy-wheels > And fortran is probably why the quadmath is there. Hmm, if we fix it we will need to test it... Chuck > > >> >> Note that compiling from source is different and will generally use >> different libraries. We don't use Accelerate because it is buggy, not >> thread safe, and it appears Apple is not interested in doing anything about >> that. >> >> Chuck >> _______________________________________________ >> NumPy-Discussion mailing list >> NumPy-Discussion@python.org >> https://mail.python.org/mailman/listinfo/numpy-discussion >> > _______________________________________________ > NumPy-Discussion mailing list > NumPy-Discussion@python.org > https://mail.python.org/mailman/listinfo/numpy-discussion >
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