Easyspin compile required for esfit version 6.0.0

[thanasis]

One issue I came across and how it can be solved:

The esfit function in the 6.0.0 version apparently makes a call to a new function called esfit_algdefaults, which caused an error:

Unrecognized function or variable 'esfit_algdefaults'.

This is located in the easyspin/private folder, which Easyspin cannot add to the path. Making a copy of the esfit_algdefaults.p to the parent directory (/easyspin) solves the problem and the fitting window launches.

However, upon pressing the "Start Fitting" button, a new error appears:

Undefined function 'compisoloop' for input arguments of type 'function_handle'.

Doing the same with file compisoloop.p, also solves the problem and the fit launches.

Also a number of warnings for missing png files appears in orange.

Issuing the easyspin compile command apparently is needed to solve those issues.

[Stefan Stoll]

Thanks for reporting this. Unclear what it going on. Can you please type easyspin in the Command Window and post the output here?

[thanasis]

Sure, here goes:

[quote]Information about the installed EasySpin version

Version: 6.0.0 (2024-04-01)
Expiration date: 2026-04-01
Root folder: /home/...

mex files: mexa64, all present

MATLAB version: 9.12.0.2170939 (R2022a) Update 6
Platform: Linux 6.3.13-060313-generic
System date: 240412
Temp dir: /tmp/
[/quote]

[thanasis]

Another iteration from another computer (also running Linux Mint Mate):
Once the fitting starts from the gui window:

Simulation function error:
EasySpin: Generation of mex files failed.

Trying easyspin compile again produced a series of errors:

EasySpin compilation
directory: /home/...
version: 9.12.0.2170939 (R2022a) Update 6
mex extension: mexa64, 64-bit
mex C compiler: gcc
compiling 9 c-files...
(1/9) chili_lm.c failed
Error using mex
/usr/bin/ld: cannot find -lstdc++: No such file or directory
collect2: error: ld returned 1 exit status

(2/9) cubicsolve.c failed
Error using mex
/usr/bin/ld: cannot find -lstdc++: No such file or directory
collect2: error: ld returned 1 exit status

(3/9) lisum1i.c failed
Error using mex
/usr/bin/ld: cannot find -lstdc++: No such file or directory
collect2: error: ld returned 1 exit status

(4/9) mdhmm_lbfgsb_wrapper.c failed
Error using mex
/usr/bin/ld: cannot find -lstdc++: No such file or directory
collect2: error: ld returned 1 exit status

(5/9) multimatmult_.c failed
Error using mex
/usr/bin/ld: cannot find -lstdc++: No such file or directory
collect2: error: ld returned 1 exit status

(6/9) multinucstick.c failed
Error using mex
/usr/bin/ld: cannot find -lstdc++: No such file or directory
collect2: error: ld returned 1 exit status

(7/9) projecttriangles.c failed
Error using mex
/usr/bin/ld: cannot find -lstdc++: No such file or directory
collect2: error: ld returned 1 exit status

(8/9) projectzones.c failed
Error using mex
/usr/bin/ld: cannot find -lstdc++: No such file or directory
collect2: error: ld returned 1 exit status

(9/9) sf_peaks.c failed
Error using mex
/usr/bin/ld: cannot find -lstdc++: No such file or directory
collect2: error: ld returned 1 exit status

[thanasis]

And the solution this time was:

Code: Select all

sudo apt install g++-multilib

[Stefan Stoll]

There seem to be two unrelated issues here:

1. MATLAB can't find (some) p-files in the private folder. Unclear what is going on here.

2. The C/C++ compilation environment was not set up on your machine. Have you run mex -setup? See here.

[thanasis]

In both machines, mex -setup identified gcc as compiler, though I don't know why I had to manually install the extra library on the second machine.

But in both cases the errors disappeared once the compilation was successfully done.