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Mex compilation error in Windows

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Wajahat
Wajahat 2012 年 9 月 7 日
Hi
I have a piece of code which compiles without any error or warning in Linux with GCC but in windows with Visual C++2010 as the compiler, give a list of following errors. Any idea what is the reason:
bttc_m.c(32) : error C2143: syntax error : missing ';' before 'const'
bttc_m.c(33) : error C2065: 'dim' : undeclared identifier
bttc_m.c(33) : error C2109: subscript requires array or pointer type
bttc_m.c(33) : error C2065: 'dim' : undeclared identifier
bttc_m.c(33) : error C2109: subscript requires array or pointer type
bttc_m.c(35) : error C2065: 'dim' : undeclared identifier
bttc_m.c(35) : error C2109: subscript requires array or pointer type
bttc_m.c(43) : error C2143: syntax error : missing ';' before 'type'
bttc_m.c(73) : error C2143: syntax error : missing ';' before 'type'
bttc_m.c(74) : error C2143: syntax error : missing ';' before 'type'
bttc_m.c(75) : error C2065: 'i' : undeclared identifier
bttc_m.c(75) : error C2065: 'i' : undeclared identifier
bttc_m.c(75) : error C2065: 'i' : undeclared identifier
bttc_m.c(76) : error C2065: 'j' : undeclared identifier
bttc_m.c(76) : error C2065: 'j' : undeclared identifier
bttc_m.c(76) : error C2065: 'j' : undeclared identifier
bttc_m.c(77) : error C2065: 'dat' : undeclared identifier
bttc_m.c(77) : error C2065: 'j' : undeclared identifier
bttc_m.c(77) : error C2065: 'i' : undeclared identifier
bttc_m.c(77) : error C2109: subscript requires array or pointer type
bttc_m.c(77) : error C2065: 'i' : undeclared identifier
bttc_m.c(77) : error C2065: 'j' : undeclared identifier
bttc_m.c(116) : error C2143: syntax error : missing ';' before 'type'
bttc_m.c(117) : error C2143: syntax error : missing ';' before 'type'
bttc_m.c(119) : error C2065: 'dims' : undeclared identifier
bttc_m.c(119) : error C2109: subscript requires array or pointer type
bttc_m.c(120) : error C2065: 'dims' : undeclared identifier
bttc_m.c(120) : error C2109: subscript requires array or pointer type
bttc_m.c(121) : error C2065: 'dims' : undeclared identifier
bttc_m.c(121) : warning C4047: 'function' : 'const int *' differs in levels of indirection from 'int'
bttc_m.c(121) : warning C4024: 'mxCreateNumericArray_700' : different types for formal and actual parameter 2
bttc_m.c(122) : error C2065: 'dat' : undeclared identifier
bttc_m.c(122) : warning C4047: '=' : 'int' differs in levels of indirection from 'double *'
bttc_m.c(124) : error C2065: 'dat' : undeclared identifier
bttc_m.c(124) : error C2065: 'dims' : undeclared identifier
bttc_m.c(124) : error C2109: subscript requires array or pointer type
bttc_m.c(125) : error C2065: 'dat' : undeclared identifier
bttc_m.c(125) : error C2065: 'dims' : undeclared identifier
bttc_m.c(125) : error C2109: subscript requires array or pointer type
bttc_m.c(126) : error C2065: 'dat' : undeclared identifier
bttc_m.c(126) : error C2065: 'dims' : undeclared identifier
bttc_m.c(126) : error C2109: subscript requires array or pointer type
bttc_m.c(129) : error C2065: 'dims' : undeclared identifier
bttc_m.c(129) : error C2109: subscript requires array or pointer type
bttc_m.c(130) : error C2065: 'dims' : undeclared identifier
bttc_m.c(130) : warning C4047: 'function' : 'const int *' differs in levels of indirection from 'int'
bttc_m.c(130) : warning C4024: 'mxCreateNumericArray_700' : different types for formal and actual parameter 2
bttc_m.c(131) : error C2065: 'dat' : undeclared identifier
bttc_m.c(131) : warning C4047: '=' : 'int' differs in levels of indirection from 'double *'
bttc_m.c(134) : error C2065: 'dat' : undeclared identifier
bttc_m.c(134) : error C2065: 'dims' : undeclared identifier
bttc_m.c(134) : error C2109: subscript requires array or pointer type
bttc_m.c(176) : error C2143: syntax error : missing ';' before 'type'
bttc_m.c(177) : error C2143: syntax error : missing ';' before 'type'
bttc_m.c(179) : error C2065: 'dims' : undeclared identifier
bttc_m.c(179) : error C2109: subscript requires array or pointer type
bttc_m.c(180) : error C2065: 'dims' : undeclared identifier
bttc_m.c(180) : error C2109: subscript requires array or pointer type
bttc_m.c(181) : error C2065: 'dims' : undeclared identifier
bttc_m.c(181) : warning C4047: 'function' : 'const int *' differs in levels of indirection from 'int'
bttc_m.c(181) : warning C4024: 'mxCreateNumericArray_700' : different types for formal and actual parameter 2
bttc_m.c(182) : error C2065: 'dat' : undeclared identifier
bttc_m.c(182) : warning C4047: '=' : 'int' differs in levels of indirection from 'double *'
bttc_m.c(184) : error C2065: 'dat' : undeclared identifier
bttc_m.c(184) : error C2065: 'dims' : undeclared identifier
bttc_m.c(184) : error C2109: subscript requires array or pointer type
bttc_m.c(185) : error C2065: 'dat' : undeclared identifier
bttc_m.c(185) : error C2065: 'dims' : undeclared identifier
bttc_m.c(185) : error C2109: subscript requires array or pointer type
bttc_m.c(186) : error C2065: 'dat' : undeclared identifier
bttc_m.c(186) : error C2065: 'dims' : undeclared identifier
bttc_m.c(186) : error C2109: subscript requires array or pointer type
bttc_m.c(189) : error C2065: 'dims' : undeclared identifier
bttc_m.c(189) : error C2109: subscript requires array or pointer type
bttc_m.c(190) : error C2065: 'dims' : undeclared identifier
bttc_m.c(190) : warning C4047: 'function' : 'const int *' differs in levels of indirection from 'int'
bttc_m.c(190) : warning C4024: 'mxCreateNumericArray_700' : different types for formal and actual parameter 2
bttc_m.c(191) : error C2065: 'dat' : undeclared identifier
bttc_m.c(191) : warning C4047: '=' : 'int' differs in levels of indirection from 'double *'
bttc_m.c(194) : error C2065: 'dat' : undeclared identifier
bttc_m.c(194) : error C2065: 'dims' : undeclared identifier
bttc_m.c(194) : error C2109: subscript requires array or pointer type
bttc_m.c(197) : error C2065: 'dims' : undeclared identifier
bttc_m.c(197) : error C2109: subscript requires array or pointer type
bttc_m.c(198) : error C2065: 'dims' : undeclared identifier
bttc_m.c(198) : error C2109: subscript requires array or pointer type
bttc_m.c(199) : error C2065: 'dims' : undeclared identifier
bttc_m.c(199) : warning C4047: 'function' : 'const int *' differs in levels of indirection from 'int'
bttc_m.c(199) : warning C4024: 'mxCreateNumericArray_700' : different types for formal and actual parameter 2
bttc_m.c(200) : error C2143: syntax error : missing ';' before 'type'
bttc_m.c(201) : error C2065: 'tr' : undeclared identifier
bttc_m.c(201) : warning C4047: '=' : 'int' differs in levels of indirection from 'double *'
bttc_m.c(205) : error C2065: 'tr' : undeclared identifier
bttc_m.c(205) : error C2109: subscript requires array or pointer type
bttc_m.c(221) : error C2065: 't1' : undeclared identifier
bttc_m.c(221) : error C2065: 't0' : undeclared identifier
bttc_m.c(221) : warning C4244: '=' : conversion from 'float' to 'int', possible loss of data
bttc_m.c(222) : error C2065: 't1' : undeclared identifier
C:\PROGRA~2\MATLAB\R2012A\BIN\MEX.PL: Error: Compile of 'bttc_m.c' failed.
Error using mex (line 206)
Unable to complete successfully.
  4 件のコメント
Jan
Jan 2012 年 9 月 9 日
With "relevant part" I meant the relevant part only. Most of all it would be friendly to mention, which is the "line 32".

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採用された回答

Jan
Jan 2012 年 9 月 9 日
編集済み: Jan 2012 年 9 月 9 日
If you configure your compiler to compile C code conform to the C89-standards, the variables must be declared before the code. The declaration inside the code is a C++ or C99 style [EDITED, added C99, thanks Walter]:
void mexFunction(int nlhs, mxArray *plhs[], int nrhs, const mxArray *prhs[]) {
int *faces, n;
double *img, threshold;
int size;
const mwSize *dim;
...
/* Checks. */
dim = mxGetDimensions(prhs[0]);
MSVC does accept the C++ and C99-style comments started by // in opposite to GCC, which is configured to the C89-style by Matlab. It seems like MSVC is stricter as GCC for the rule "declarations before statements". To test this, you can rename your file to "bttc_m.cpp".
  3 件のコメント
Jan
Jan 2012 年 9 月 9 日
@Walter: Thanks, I've added this detail. MSVC2010 replies TRUE for some comparisons with NaN's, what clearly breaks IEEE754. I'm afraid, that standards from 1989 and 1999 are meaningless, when the manufacturers of compilers do not care about them in 2012. Frustrating.

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その他の回答 (1 件)

Image Analyst
Image Analyst 2012 年 9 月 8 日
Unlike MATLAB, in c you need to declare variables. It looks like it's telling you that you didn't declare them as int, char, etc.
  2 件のコメント
Image Analyst
Image Analyst 2012 年 9 月 8 日
You paid a lot for the compiler (which includes support for it), so I'd call them and get your money's worth. They'll help you figure it out.

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