Why do I get an "Options file is invalid" error when I try to build an S-Function in MATLAB R2016b?

Question

MathWorks Support Team 2020-9-24

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/599302-why-do-i-get-an-options-file-is-invalid-error-when-i-try-to-build-an-s-function-in-matlab-r2016b

编辑： MathWorks Support Team 2024-3-29

I am trying to use the S-function target to generate an S-function from my subsystem. However, I encounter the following build error:

### Compiling foo_sf.c
C:\PROGRA~1\MATLAB\R2016b\bin\mex -c -v -win64   OPTIMFLAGS="/Od /Oy-"  -f
"C:\Users\johndoe\AppData\Roaming\MathWorks\MATLAB\R2016b\mex_C_win64.xml"  foo_sf.c
Error: An options file for MEX was found, but the value for 'COMPILER'
was not set. This could mean that the value is not specified
within the options file, or it could mean that there is a
syntax error within the file.
C:\PROGRA~1\MATLAB\R2016b\BIN\MEX.PL: Error: Options file is invalid.

请先登录，再回答此问题。

Answer 1

MathWorks Support Team 2024-3-29

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/599302-why-do-i-get-an-options-file-is-invalid-error-when-i-try-to-build-an-s-function-in-matlab-r2016b#answer_499906

编辑：MathWorks Support Team 2024-3-29

The above error message indicates that the build process invoked "mex.pl" (Perl script from an obsolete workflow), instead of "mex.bat". This can happen of the PATHEXT environment variable has the .PL extension listed before the .BAT extension. In this case, the output from the "getenv('PATHEXT')" command may look as given below:

>> getenv('PATHEXT')
ans =
PL;.COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH;.MSC

In order for the build process to succeed, please overwrite the PATHEXT environment variable for your MATLAB session so that the .PL extension is not included (or placed somewhere behind .BAT), by using the following command:

>> setenv('PATHEXT','COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH;.MSC');

In order to automate the execution of the above command at the start of every MATLAB session, add it to a "startup.m" file as shown in the following documentation page:

https://www.mathworks.com/help/matlab/ref/startup.html