Matlab编译器使用mbuild命令可以直接将C/C++源代码编译为独立运行程序,在这些源代码中可以使用Matlab提供的接口来调用Matlab数学库函数。
虽然生成的可执行程序可以脱离Matlab环境运行,但是它需要Matlab C/C++数学库文件或者图形库文件的支持才能运行。但如果C/C++源代码完全是按传统C/C++源代码语法规则编写,没有包含Matlab数学库和图形库的调用,则不仅可以独立与Matlab环境,也不需要那两个库函数的支持。
1. MATLAB 环境配置:
>> mbuild -setup
a default compiler. For a list of supported compilers, see
http://www.mathworks.com/support/compilers/R2011b/win32.html
Please choose your compiler for building standalone MATLAB applications:
Would you like mbuild to locate installed compilers [y]/n? y
(注:若是第一次mbuild -setup,选n,再在给出的的选项中选择2010 compiler,要注意安装路径是否相符)
[1] Microsoft Software Development Kit (SDK) 7.1
[2] Microsoft Visual C++ 6.0
[3] Microsoft Visual C++ 2008 SP1
[4] Microsoft Visual C++ 2010
[5] Microsoft Visual C++ 2012
[0] None
Compiler: 4
E:\Program Files\VS2010. Do you want to use this compiler [y]/n? y
Please verify your choices:
Compiler: Microsoft Visual C++ 2010
Location: E:\Program Files\VS2010
Are these correct [y]/n? y
Warning: Applications/components generated using Microsoft Visual C++
2010 require that the Microsoft Visual Studio 2010 run-time
libraries be available on the computer used for deployment.
To redistribute your applications/components, be sure that the
deployment machine has these run-time libraries.
****************************************************************************
Trying to update options file: C:\Users\Yanlu\AppData\Roaming\MathWorks\MATLAB\R2013a\compopts.bat
From template: E:\PROGRA~1\MATLAB~1\bin\win32\mbuildopts\msvc100compp.bat
Done . . .
>> mex – setup
以类似的方法配置编译器。Matlab 的配置完成.
a default compiler. For a list of supported compilers, see
http://www.mathworks.com/support/compilers/R2011b/win32.html
Please choose your compiler for building MEX-files:
Would you like mex to locate installed compilers [y]/n? y
Select a compiler:
[1] Lcc-win32 C 2.4.1 in D:\PROGRA~1\MATLAB\R2011b\sys\lcc
[2] Microsoft Visual C++ 2010 in D:\Program Files\Microsoft Visual Studio 10.0
[3] Microsoft Visual C++ 2008 SP1 in E:\Program Files\Microsoft Visual Studio 9.0
[0] None
Compiler: 2
Compiler: Microsoft Visual C++ 2010
Location: E:\Program Files\VS2010
Are these correct [y]/n? y
Warning: MEX-files generated using Microsoft Visual C++ 2010 require
that Microsoft Visual Studio 2010 run-time libraries be
available on the computer they are run on.
If you plan to redistribute your MEX-files to other MATLAB
users, be sure that they have the run-time libraries.
***************************************************************************
Trying to update options file: C:\Users\Yanlu\AppData\Roaming\MathWorks\MATLAB\R2013a\mexopts.bat
From template: E:\PROGRA~1\MATLAB~1\bin\win32\mexopts\msvc100opts.bat
Done . . .
**************************************************************************
Warning: The MATLAB C and Fortran API has changed to support MATLAB
variables with more than 2^32-1 elements. In the near future
you will be required to update your code to utilize the new
API. You can find more information about this at:
http://www.mathworks.com/help/matlab/matlab_external/upgrading-mex-files-to-use-64-bit-api.html
Building with the -largeArrayDims option enables the new API.
**************************************************************************
2.转化BoostImage.m文件
mcc -W cpplib:BoostImage -T link:lib BoostImage -d F:\zhangying\xieyulin\MatlabToC\
注:在此的m文件function最好对应end,否则容易出现 Error using mcc的错误。(但我碰到有个m文件仍不能转化成功,不知什么原因)
其中,mcc是Matlab提供的编译命令,对于这一点,Matlab的帮助说明如下:
-W lib:string link:lib其中-W是控制编译之后的封装格式,cpplib,是指编译成C++的lib,cpplib冒号后面是指编译的库的名字,
-T表示目标,link:lib表示要连接到一个库文件的目标,目标的名字是后面的BoostImage,即你写的m函数的名字。
运行完之后,你的目录下面,将会出现以下一些文件:
BoostImage.cpp
BoostImage.exp
BoostImage.dll
BoostImage.exports
BoostImage.h
BoostImage.lib
mccExcludedFiles.log
readme.txt
具体每一个文件的意思,请查帮助,这里只说其中很有用的几个:
BoostImage.dll是编译好的动态库,BoostImage这个函数封装在里面,BoostImage.h是对应的头文件,在C里面调用这个函数的时候,需要include这个头文件在这个头文件的最后,你可以看到下面的内容:
extern LIB_BoostImage_CPP_API void MW_CALL_CONV BoostImage(int nargout, mwArray& output_im, const mwArray& input_im, const mwArray& Mboost);
这就是BoostImage的C函数的声明。nargout表示输出变量的个数,a,b,c就是对应了m函数的几个变量。
注意,a,b,c三个变量的类型是mwArray,这是Matlab提供的一个特殊的变量类型(在7.0的版本,编译之后,变量类型是mxArray)。mwArray是一个类,具体可以查帮助。
2.系统环境设置
我的电脑->属性->高级->环境变量->用户变量->PATH中添加路径:D:\Program Files\MATLAB\R2011b\bin\win32,重启生效。
3.VS2010环境配置
新建一个win32 控制台应用程序,命名为MatlabTest.
右键MatlabTest解决方案->properties->VC++ Derections
(1)在“Executable Directions”项目栏,添加:D:\Program Files\MATLAB\R2011b\bin\win32(注意:当前的Mathlab安装在D:\Program Files下面)
(2)在“include Directions”项目栏,添加:D:\Program Files\MATLAB\R2011b\extern\include
(3)在“Library Directions”项目栏,添加:D:\Program Files\MATLAB\R2011b\extern\lib\win32\microsoft
上述环境只需要配置一次。
另参考:
在此暂时先测试了VS2010调用matlab现有函数的功能:
// MatlabTest.cpp : Defines the entry point for the console application.
// #include "stdafx.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "engine.h"
#include "matrix.h"
#pragma comment(lib,"libeng.lib")
#pragma comment(lib,"libmx.lib")
int main()
{
Engine *ep;
int i , j ;
//show how to open MATLAB engine
//for remote ones:
//engOpen( ADDRESS OF REMOTE SYSTEM ) ;
if (!(ep = engOpen("\0"))){
fprintf(stderr, "\nCan't start MATLAB engine\n");
return EXIT_FAILURE;
}
//show how to create matrix
mxArray *Y = mxCreateDoubleMatrix( , , mxREAL) ;
//show how to put data in matrix
double tmp[] = {1.0 , 2.0 , 3.0} ;
memcpy(mxGetPr(Y) , tmp , sizeof(tmp)) ;
//show how to put variables in the Engine
engPutVariable(ep , "Y" , Y) ;
//show how to execute commands in MATLAB
engEvalString(ep, "X = ones(5,1) * Y");
//show how to get variables from the Engine
mxArray *X = engGetVariable(ep , "X") ;
//show how to manipulate dimensions
int dims[] ;
int ndims ;
ndims = mxGetNumberOfDimensions(X) ;
printf("total number of dimensions is %d\n" , ndims) ;
memcpy(dims , mxGetDimensions(X) , ndims * sizeof(int)) ;
for ( i = ; i < ndims ; i ++ ){
printf("dimension %d : %d\n" , i , dims[i]) ;
}
printf("\n") ;
//show how the data is stored in the memory
double *p = (double*)mxGetData(X) ;
for ( i = ; i < dims[] ; i ++ ){
for ( j = ; j < dims[] ; j ++ ){
printf("%8.2f" , p[j * dims[] + i]) ;
}
printf("\n") ;
}
//---important, to release resources
mxDestroyArray(X) ;
mxDestroyArray(Y) ;
//show how to hide and unhide MATLAB command window
printf("type RETURN to hide the MATLAB command window...\n") ;
getchar() ;
engSetVisible(ep , false) ;
printf("type RETURN to unhide the MATLAB command window...\n") ;
getchar() ;
engSetVisible(ep , true) ;
printf("type RETURN to END this program...\n") ;
getchar() ;
//remembering to close it is important .
//but if you are debugging your programs ,
//annotate the following line will save you a lot of time ,
//for you needn't to restart the Engine .
engClose(ep) ;
//when your work is accomplished , type "exit" in MATLAB command window
return EXIT_SUCCESS;
}
若出现如下问题:
error C2371: 'char16_t' : redefinition; different basic types
在混合编程中,也许会出现如下错误:
—————————————————————————————————————————————————
C:Microsoft Visual Studio 10.0VCINCLUDEyvals.h(576) : error C2371: 'char16_t' : redefinition; different basic types
C:Matlabr2010aexternincludematrix.h(330) : see declaration of 'char16_t'
—————————————————————————————————————————————————
原因是VS2010中的yvals.h添加了char16_t的定义,而Matlab的matrix.h也包含对char16_t的定义,所以同时包含这两个头文件的话,会导致重复定义char16_t的错误。
解决方案:
参考:http://maciejgryka.com/bits/2011/09/char16_t-conflict-while-mexing-with-vs2010/
完全没有必要修改这两个头文件(以防修改之后,会在将来导致一些问题),只需要在包含matrix.h之前包含yvals.h即可。例如:
#include <yvals.h>
#if (_MSC_VER >= 1600)
#define __STDC_UTF_16__
#endif
#include "mex.h"
注:mex.h 包含matrix.h。这就要求我们必须知道所包含的头文件是否包含matrix.h。