MATLAB COMPILER RELEASE NOTES User's Guide download pdf (Page 56)

2 Installation and Configuration

2-26

Troubleshooting

This section identifies some of the more common problems that can occurwhen

installing and configuring the MATLAB Compiler.

mex Troubleshooting

Out of Environment Space Running mex or mbuild. On Windows 95 and Windows 98

systems, the

mex and mbuild scripts require more than the default amount of

environment space. If you get the error,

out of environment space,addthis

linetoyour

config.sys file.

shell=c:\command.com /e:32768 /p

Non-ANSI C Compiler on UNIX. A common configuration problem in creating C

MEX-files on UNIX involves using a non-ANSI C compiler. You must use an

ANSI C compiler.

DLLs Not on Path on Windows. MATLAB will fail to load MEX-f ilesifitcannotfind

all DL Ls refere nce d by the MEX-file; the DLLs must be on the DOS path or i n

the same directo ry as the MEX-file . This is als o true for third-party DLLs.

Segmentation Violation or Bus Error. If your MEX-file causes a segmentation

viola tio n or bus error , there is mo st likel y a problem w ith the MA TLAB

Compiler. Contact Technical Support at The MathWorks

(

Generates Wrong Answers. If your program generates the wrong answer(s),there

are several possible causes. There could be an error in the computational logic

or there may be a defect in the MATLAB Compiler. Run your original M-file

with a set of sample data and record the results. Then run the associated

MEX-file with the sample data and compare the results with those from the

original M-file. If the results are the same,there may be a logic problem in your

original M-file. If the results differ, there may be a defect in the MATLAB

Compiler. In this case, send the pertinent information via e-mail to

mex Works from Shell But Not from MATLAB (UNIX). If the command

mex -x yprime.c

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MATLAB COMPILER RELEASE NOTES User's Guide Page 56