Invalid MEX-file '/home/sky​/frost-dev​/third/mat​hlink/math​.mexa64': libWSTP64i4.so: cannot open shared object file: No such file or directory

I have installed matlab2019a,mathematica12.1 and frost in ubuntu18.04,and my gcc version is 7.5,then I got the following error:

Invalid MEX-file '/home/sky/frost-dev/third/mathlink/math.mexa64': libWSTP64i4.so: cannot open shared object file

I added the path of the metioned library to the LD_LIBRARY_PATH,but it didn't work.

>> frost_addpath();
Warning: Name is nonexistent or not a directory: /home/sky/matlab/nlp 
> In path (line 109)
In addpath (line 86)
In frost_addpath (line 11) 
Warning: Name is nonexistent or not a directory: /home/sky/matlab/solver 
> In path (line 109)
In addpath (line 86)
In frost_addpath (line 12) 
Warning: Name is nonexistent or not a directory: /home/sky/matlab/system 
> In path (line 109)
In addpath (line 86)
In frost_addpath (line 13) 
Warning: Name is nonexistent or not a directory: /home/sky/matlab/control 
> In path (line 109)
In addpath (line 86)
In frost_addpath (line 14) 
Warning: Name is nonexistent or not a directory: /home/sky/matlab/robotics 
> In path (line 109)
In addpath (line 86)
In frost_addpath (line 15) 
Warning: Name is nonexistent or not a directory: /home/sky/matlab/utils 
> In path (line 109)
In addpath (line 86)
In frost_addpath (line 17) 
Warning: Name is nonexistent or not a directory: /home/sky/third 
> In path (line 109)
In addpath (line 86)
In frost_addpath (line 23) 
Warning: Name is nonexistent or not a directory: /home/sky/mathematica 
> In path (line 109)
In addpath (line 86)
In frost_addpath (line 27) 
Invalid MEX-file '/home/sky/frost-dev/third/mathlink/math.mexa64': libWSTP64i4.so: cannot open shared object file:
No such file or directory

Error in initialize_mathlink (line 8)
math('$Version')

Error in frost_addpath (line 28)
initialize_mathlink();

Answer 1

[Stefanie Schwarz]

Sounds like a basic missing files/installation issue. Since FROST is a third-party product, I recommend reaching out to the authors of this toolbox.