No better way to finish 2017 than trying to compile some old fortran code. This time it's the fast multipole method library from nyu, fmmlib.
Here's how I did it on a MacBook Pro running OS X 10.12 with MATLAB r2018a pre-release.
First install gfortran using homebrew via:
brew install gcc
Now we need to convince to use find and use gfortran.
Download gfortran.xml
and
Download gfortran.xml
In MATLAB issue:
copyfile('~/Downloads/xcode7_mexopts/gfortran.xml',fullfile( matlabroot, 'bin', 'maci64', 'mexopts' ))
On the command line, install gfortrani8 in the same directory as gfortran. I did this via:
cp ~/Downloads/gfortrani8 /usr/local/Cellar/gcc/7.2.0/bin/gfortrani8
Now, the following should succeed in MATLAB to setup the gfortran compiler:
mex -setup -v FORTRAN
For posterity: If you get "sdk" related issues, you may need to copy all the 10.13 lines in gfortran.xml and create analogous lines for 10.14 etc.
It seems like the '-compatibleArrayDims' flag should be used with fmmlib, but honestly I'm not sure. Something to revisit if it crashes on giant input I guess.
Finally, I had trouble locating the libgfortran.a library and convincing MATLAB's Mex to use it. Therefore, I added:
[~,libgfortran] = system('gfortran -print-file-name=libgfortran.dylib');
libgfortran = libgfortran(1:end-1);
to my Mex script so that I can issue lines like this:
mex('fmm3d_r2012a.c',fortran_object_files{:},libgfortran);
This is enough to compile all of the fortran source files one by one and then link them during compilation and linking of the fmm3d_r2012a.c file.
I've added a matlab/compile.m script to my GitHub mirror/fork of the fmmlib library. So if you do the steps above you should be to just issue:
cd ~/Downloads
git clone
cd ~/Downloads/fmmlib3d-1.2/matlab/
compile