* Description of the issue *
If you use the Simulink accelerator modes or coder functionality, you may see errors like:
1.
When using Simulink Accelerator modes, errors such as:
In file included from /usr/llvm-gcc-4.2/bin/../lib/gcc/i686-apple-darwin11/4.2.1/include/limits.h:15,
from ../slprj/ert/_sharedutils/rtwtypes.h:24,
from Controller.h:21,
from Controller.c:17:
/Applications/Xcode.app/Contents/Developer/usr/llvm-gcc-4.2/lib/gcc/i686-apple-darwin11/4.2.1/include/limits.h:15:25: error: no include path in which to search for limits.h
gmake: *** [Controller.o] Error 1
### Build procedure for model: 'Controller' aborted due to an error.
Error using rtwbuild (line 228)
Error(s) encountered while building model "Controller"
2.
When generating code using MATLAB or Simulink Coder, errors such as:
??? Build error: Compilation returned error status code 2. See the target build log in the report for further
details.
Error in ==> hello_world Line: 1 Column: 1 Code generation failed: Open error report.
* Steps to apply the patch *
This bug has been fixed in Release 2012b (R2012b). For previous product releases, read below for any possible workarounds:
In order to utilize the Simulink Accelerator/Coder functionality using Xcode 4.2 or higher, follow the steps below:
1. The general MATLAB Xcode 4.2+ patch must be applied. See the related solution 1-FR6LXJ for detailed steps (link below). The MATLAB version, Mac OS version, and Xcode version requirements in this solution are the same as those specified in 1-FR6LXJ.
Please confirm that the patch was applied correctly before proceeding. In order to do so, you can test by compiling and running a simple MEX file:
Run the code below in the MATLAB command window to copy an example MEX file into the current folder, compile the MEX file and then run it.
system(['cp "' matlabroot '/extern/examples/mex/yprime.c" .'])
pause(5)
mex yprime.c
pause(5)
yprime(1, [1 : 4])
If the above code returns
ans =
2.0000 8.9685 4.0000 -1.0947
then MEX is working properly and the patch was applied correctly. If the above confirmation step fails, please check the troubleshooting guidelines in solution 1-FR6LXJ.
2. After applying the MATLAB Xcode patch in Step 1, download the appropriate Simulink patch for your Simulink version, attached to this solution:
makePatch_R2011a.patch
makePatch_R2011b.patch
makePatch_R2012a.patch
These instructions assume you download it to the default location Safari uses, namely the “Downloads” folder of your home folder.
* NOTE *
A Simulink patch is not required for R2012b.
3. Start MATLAB, if it is not already running.
4. In the MATLAB command window, type:
>> cd(matlabroot)
>> !unzip -o ~/Downloads/makePatch_R2011a.patch
or
>> cd(matlabroot)
>> !unzip -o ~/Downloads/makePatch_R2011b.patch
or
>> cd(matlabroot)
>> !unzip -o ~/Downloads/makePatch_R2012a.patch
depending on the patch downloaded.
5. Restart MATLAB and Simulink.
