errors when "cmake .." for the python extension about fmm

[cyang-kth]

@august-zhu

That is only warning but not error according to the log. You can continue with make to see if the Python can be build successfully.

I actually encountered every similar warning on my machine. So I will try to remove some of them or suppress them.

[cyang-kth]

@august-zhu

You can run

rm CMakeCache.txt
cmake -Wno-dev ..

[august-zhu]

@cyang-kth

Thanks. It worked.

[august-zhu]

Hi,

I had another problem - adding the build folder to PYTHONPATH is not working.

I can only import fmm when the current directory is under the build folder (the importing fmm can obviously run under the build folder).

august_zhu@DESKTOP-P5KQ2S3 /cygdrive/d/fmm-master/python/build
$ python
Python 2.7.16 (default, Mar 20 2019, 12:15:19)
[GCC 7.4.0] on cygwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import fmm
>>>

I checked the sys.path, and it seems that the build folder is in the PYTHONPATH:

$ echo $PYTHONPATH
:/cygdrive/d/fmm-master/python/build

But when I tried to import fmm under a different folder, it gives me error:

$ python
Python 2.7.16 (default, Mar 20 2019, 12:15:19)
[GCC 7.4.0] on cygwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import sys
>>> sys.path
['', '/home/august_zhu', '/cygdrive/d/fmm-master/python/build', '/usr/lib/python27.zip', '/usr/lib/python2.7', '/usr/lib/python2.7/plat-cygwin', '/usr/lib/python2.7/lib-tk', '/usr/lib/python2.7/lib-old', '/usr/lib/python2.7/lib-dynload', '/usr/lib/python2.7/site-packages']
>>> import fmm
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/cygdrive/d/fmm-master/python/build/fmm.py", line 17, in <module>
    _fmm = swig_import_helper()
  File "/cygdrive/d/fmm-master/python/build/fmm.py", line 16, in swig_import_helper
    return importlib.import_module('_fmm')
  File "/usr/lib/python2.7/importlib/__init__.py", line 37, in import_module
    __import__(name)
ImportError: No such file or directory
>>> exit()

Thanks.

[cyang-kth]

@august-zhu

I am not sure about that problem.
I do not have a windows computer at hand to test it. It builds successfully on Mac and Ubuntu.

It seems that you have a cygwin setup, but you install the fmm at some other drive.

/cygdrive/d/fmm-master/python/build

Can you try to place it under some folder in the your home directory like this one

/home/august_zhu/workspace/fmm-master

Also remember to remove the old PYTHONPATH from your .bashrc file

nano ~/.bashrc

Comment out or remove this line

# export PYTHONPATH=${PYTHONPATH}:/cygdrive/d/fmm-master/python/build

Remember to run

source ~/.bashrc

to update the environment variables each time you modify that file.

[cyang-kth]

This issue is not active for 7 days, so it is closed.