Compile Error on PIP

[Gab0]

Hello,

Running $pip install freesasa fails with this error:

    freesasa.c: In function ‘__Pyx_PyCFunction_FastCall’:
    freesasa.c:13555:13: error: too many arguments to function ‘(PyObject * (*)(PyObject *, PyObject * const*, Py_ssize_t))meth’
         return (*((__Pyx_PyCFunctionFast)meth)) (self, args, nargs, NULL);
                ~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    freesasa.c: In function ‘__Pyx_PyObject_AsStringAndSize’:
    freesasa.c:15576:20: warning: return discards ‘const’ qualifier from pointer target type [-Wdiscarded-qualifiers]
                 return PyUnicode_AsUTF8(o);
                        ^~~~~~~~~~~~~~~~~~~
    error: command 'gcc' failed with exit status 1
    ----------------------------------------

I can clone the repo and compile with bare ./configure just fine though, but I guess in my manual compilation the python bindings are ignored?

I'm running python 3.7 and pip 19.3 here, thanks!

[mittinatten]

Hi, That’s right, the python bindings are not part of the regular build. I just recently added a source package for 3.7, so haven’t seen this before. I will try to reproduce your problem during the weekend. I assume you are on Linux, since you are building from source?

Simon

fre 18 okt. 2019 kl. 04:43 skrev Gabriel Araujo notifications@github.com:

Hello,

Running $pip install freesasa fails with this error:

freesasa.c: In function ‘__Pyx_PyCFunction_FastCall’:

freesasa.c:13555:13: error: too many arguments to function ‘(PyObject * (*)(PyObject *, PyObject * const*, Py_ssize_t))meth’

     return (*((__Pyx_PyCFunctionFast)meth)) (self, args, nargs, NULL);

            ~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

freesasa.c: In function ‘__Pyx_PyObject_AsStringAndSize’:

freesasa.c:15576:20: warning: return discards ‘const’ qualifier from pointer target type [-Wdiscarded-qualifiers]

             return PyUnicode_AsUTF8(o);

                    ^~~~~~~~~~~~~~~~~~~

error: command 'gcc' failed with exit status 1

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

I can clone the repo and compile with bare ./configure just fine though, but I guess in my manual compilation the python bindings are ignored?

I'm running python 3.7 and pip 19.3 here, thanks!

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[Gab0]

Hi Simon,

Yes, I'm using a recent Linux with gcc 8.3.0...

If there's a way to build manually with python bindings, that would work for me. But when running ./configure --enable-python-bindings it says "that flag doesn't exist".

Thanks.

[mittinatten]

Hi again, Didn't get a chance to look at it yet, but if you want to experiment with building directly from the source package in the mean time, the Python bindings have moved to https://github.com/freesasa/freesasa-python. It's been a while since the --enable-python-bindings option was removed.

[Gab0]

Thanks, that one compiled perfectly. I'll try to find out what is happening on the pipy package and come up with a fix, packages with unusual setups and C code tend to be... complicated there.

[mittinatten]

Good to hear! Let me know what you find out. These bindings is the only Python I ever wrote, so any input is appreciated!

[mittinatten]

See https://github.com/freesasa/freesasa-python/issues/4#issuecomment-548067586