MATLAB mexFunction() with Cygwin GCC Windows

Igor Peshansky
Wed Sep 26 14:24:00 GMT 2007

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.
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