MATLAB mexFunction() with Cygwin GCC Windows
I have successfully built/linked MATLAB mex files on Windows using GCC in
Cygwin. Unfortunately, it has a runtime error. It appears the error is due to
mismatched calling coventions for parameter passing. The MATLAB interpreter
successfully invokes the mexFunction() in my shared library (.mexw32), but the
passed parameters are corrupted.
I've tried GCC's attribute to set the mexFunction() to cdecl, stdcall,
and fastcall, but still no luck.
Anyone know the solution?
Details follow:
MATLAB mexopts.bat
=
@echo off
rem Cygwin GCC on Windows
set MATLAB=%MATLAB%
set COMPILER=gcc
set COMPFLAGS=-mno-cygwin -D_WIN32 -shared -DMATLAB_MEX_FILE -Wall -c -msse3
-I%ProgramFiles%\Pthreads\include -I%ProgramFiles%\Verasonics\Hal\Hal
C\Includes -o%MEX_NAME%.obj
set OPTIMFLAGS=-O3
set DEBUGFLAGS=-g3
set LINKER=gcc
set LINKFLAGS=-mno-cygwin -D_WIN32 -shared -DMATLAB_MEX_FILE -nostartfiles
-L%ProgramFiles%\Verasonics\Hal\Hal C\Shared Libraries -lverasonicshalwindows
-L%ProgramFiles%\MATLAB\R2007a\bin\win32 -lmat -lmex -lmx
set LINKOPTIMFLAGS=-s
set LINKDEBUGFLAGS=
set NAME_OUTPUT=-o%MEX_NAME%.mexw32
myMex.c
#include mex.h
#include stdio.h
void mexFunction(int nlhs, mxArray *plhs[], int nrhs, const mxArray *prhs[])
{
//x
printf(We are not successfully passing parameters. We will be successful
when 'nlhs' is '1' and 'nrhs' is '0'. They are: %d and %d\n, nlhs, nrhs);
//x
// Return the result as a string.
plhs[0] = mxCreateString(Some text goes here);
return;
}
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Re: MATLAB mexFunction() with Cygwin GCC Windows
On Wed, 26 Sep 2007, Boyd Edmondson wrote: I have successfully built/linked MATLAB mex files on Windows using GCC in Cygwin. Unfortunately, it has a runtime error. It appears the error is due to mismatched calling coventions for parameter passing. The MATLAB interpreter successfully invokes the mexFunction() in my shared library (.mexw32), but the passed parameters are corrupted. I've tried GCC's attribute to set the mexFunction() to cdecl, stdcall, and fastcall, but still no luck. Anyone know the solution? Details follow: MATLAB mexopts.bat = [snip] set COMPILER=gcc set COMPFLAGS=-mno-cygwin -D_WIN32 -shared -DMATLAB_MEX_FILE -Wall -c -msse3 -I%ProgramFiles%\Pthreads\include -I%ProgramFiles%\Verasonics\Hal\Hal C\Includes -o%MEX_NAME%.obj ^^^ set LINKER=gcc set LINKFLAGS=-mno-cygwin -D_WIN32 -shared -DMATLAB_MEX_FILE -nostartfiles -L%ProgramFiles%\Verasonics\Hal\Hal C\Shared Libraries -lverasonicshalwindows -L%ProgramFiles%\MATLAB\R2007a\bin\win32 -lmat -lmex -lmx ^^^ See the underlined portions above. You're not using the Cygwin gcc, you're really using the MinGW gcc that understands Cygwin paths. So you're better off asking on the MinGW list. Igor -- http://cs.nyu.edu/~pechtcha/ |\ _,,,---,,_[EMAIL PROTECTED] | [EMAIL PROTECTED] ZZZzz /,`.-'`'-. ;-;;,_Igor Peshansky, Ph.D. (name changed!) |,4- ) )-,_. ,\ ( `'-' old name: Igor Pechtchanski '---''(_/--' `-'\_) fL a.k.a JaguaR-R-R-r-r-r-.-.-. Meow! Belief can be manipulated. Only knowledge is dangerous. -- Frank Herbert -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/
RE: MATLAB mexFunction() with Cygwin GCC Windows
Done. Thanks. Boyd -Original Message- From: Igor Peshansky [mailto:[EMAIL PROTECTED] Sent: Wednesday, September 26, 2007 7:24 AM To: Boyd Edmondson Cc: cygwin@cygwin.com Subject: Re: MATLAB mexFunction() with Cygwin GCC Windows On Wed, 26 Sep 2007, Boyd Edmondson wrote: I have successfully built/linked MATLAB mex files on Windows using GCC in Cygwin. Unfortunately, it has a runtime error. It appears the error is due to mismatched calling coventions for parameter passing. The MATLAB interpreter successfully invokes the mexFunction() in my shared library (.mexw32), but the passed parameters are corrupted. I've tried GCC's attribute to set the mexFunction() to cdecl, stdcall, and fastcall, but still no luck. Anyone know the solution? Details follow: MATLAB mexopts.bat = [snip] set COMPILER=gcc set COMPFLAGS=-mno-cygwin -D_WIN32 -shared -DMATLAB_MEX_FILE -Wall -c -msse3 -I%ProgramFiles%\Pthreads\include -I%ProgramFiles%\Verasonics\Hal\Hal C\Includes -o%MEX_NAME%.obj ^^^ set LINKER=gcc set LINKFLAGS=-mno-cygwin -D_WIN32 -shared -DMATLAB_MEX_FILE -nostartfiles -L%ProgramFiles%\Verasonics\Hal\Hal C\Shared Libraries -lverasonicshalwindows -L%ProgramFiles%\MATLAB\R2007a\bin\win32 -lmat -lmex -lmx ^^^ See the underlined portions above. You're not using the Cygwin gcc, you're really using the MinGW gcc that understands Cygwin paths. So you're better off asking on the MinGW list. Igor -- http://cs.nyu.edu/~pechtcha/ |\ _,,,---,,_[EMAIL PROTECTED] | [EMAIL PROTECTED] ZZZzz /,`.-'`'-. ;-;;,_Igor Peshansky, Ph.D. (name changed!) |,4- ) )-,_. ,\ ( `'-' old name: Igor Pechtchanski '---''(_/--' `-'\_) fL a.k.a JaguaR-R-R-r-r-r-.-.-. Meow! Belief can be manipulated. Only knowledge is dangerous. -- Frank Herbert -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/
