C调用MATLAB_engine进行混编的两个环境：win7和Linux
完整代码见https://github.com/fyang21117/CMATLAB
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一、Windows环境（win7,VS2017+MATLAB_R2016b_x64）
1、必要环境设置
链接文件：libmx.lib，libmex.lib和libmat.lib （位于MATLAB库目录）；
engine.h，matrix.h，tmwtypes.h（位于MATLAB包含目录）
包含目录：D:\Program Files (x86)\SetupDir\MATLAB\R2016b\extern\include;
库目录：
D:\ProgramFiles (x86)\SetupDir\MATLAB\R2016b\extern\lib\win64\microsoft;
D:\ProgramFiles (x86)\SetupDir\MATLAB\R2016b\extern\lib\win64\mingw64;
附加器目录: D:\ProgramFiles (x86)\SetupDir\MATLAB\R2016b\bin\win64; (可不加)
二、Linux环境（Centos7.5，gcc-7.3.0+matlab_R2016b_x64）
1、必要环境设置（matlab默认安装情况下）
链接文件：libmx.so，libmex.so和libmat.so
头文件：engine.h，matrix.h，tmwtypes.h
包含目录：/usr/local/MATLAB/R2016b/extern/include
库目录：/usr/local/MATLAB/R2016b/bin/glnxa64
2、 matlab引擎依赖条件
①matlab引擎依赖/bin/csh启动，所以不管你使用何种shell，都必须安装csh
#yum install chs (centos/redhat平台)
②gcc版本过低，会出现链接库的问题（经测试，6.1.0版本gcc也是可以的）
三、示例代码
#include
#include
#include
#include "engine.h"
#include "matrix.h"
#define BUFSIZE 256
#define N 120
int main()
{
Engine *ep; // define a pointer of Engine
char level,buffer[BUFSIZE + 1];
int i=25,num;
mxArray *testdata = NULL, *result = NULL;
double cArray[N] = {
0 , 4 , 10 , 1 ,1 , 7 , 15 , 1 ,1 , 11 , 12 , 1 ,
1 , 23 , 14 , 1 ,1 , 25 , 18 , 1 ,1 , 26 , 14 , 1 ,
1 , 39 , 26 , 1 ,1 , 36 , 36 , 1 ,1 , 26 , 42 , 1 ,
1 , 39 , 36 , 1 ,1 , 38 , 31 , 2 ,1 , 36 , 35 , 2 ,
1 , 36 , 35 , 2 ,1 , 48 , 31 , 1 ,1 , 39 , 22 , 1 ,
1 , 17 , 11 , 1 ,1 , 33 , 13 , 1 ,2 , 65 , 9 , 1 ,
2 , 50 , 17 , 1 ,2 , 74 , 10 , 1 ,1 , 51 , 44 , 1 ,
1 , 28 , 62 , 1 ,1 , 17 , 37 , 1 ,1 , 7 , 21 , 2 ,
1 , 6 , 12 , 1 ,1 , 24 , 12 , 1 ,1 , 39 , 16 , 1 ,
2 , 49 , 13 , 1 ,1 , 29 , 30 , 1 ,1 , 24 , 33 , 2
};
//-----windows下将engOpen的参数改为---engOpen(NULL) ...-------------------------
if (!(ep = engOpen("/usr/local/MATLAB/R2016b/bin/matlab")))
{
printf("Can't start MATLAB engine!");
return EXIT_FAILURE;
}
engSetVisible(ep,false);
testdata = mxCreateDoubleMatrix(1, N, mxREAL);
memcpy((double *)mxGetPr(testdata), (double *)cArray, N * sizeof(double));
//Put testdata into Matlab workspace，and name it with input_data
int flag = engPutVariable(ep, "input_data", testdata);
if(flag==1)
printf("Failed to send testdata to MATLAB !");
engEvalString(ep, "save data.mat 'input_data';");
buffer[BUFSIZE] = '\0';
engOutputBuffer(ep, buffer, BUFSIZE); //result buffer
engEvalString(ep, "MTest"); //run MethodTest.m
engOutputBuffer(ep, NULL, 0);
if ((result = engGetVariable(ep, "num")) == NULL)
{
printf("The result of MATLAB is %s.\n", buffer);
for(;!(buffer[i]>='A' && buffer[i]<='Z');i++)
{
if(buffer[i]>='0' && buffer[i]<='9')
return_num=(int)(buffer[i]-48);
}
level=(char)buffer[i];
printf("The return_num is %d\n\n",num); //num and level are results of running m file
printf("The level is %c\n\n",level);
}
else
{
printf("There is something wrong with MTest.m!Check again!\n" );
}
mxDestroyArray(testdata); //free the memory
mxDestroyArray(result);
engClose(ep); //close MATLAB Engine
return EXIT_SUCCESS;
} 本示例代码实现的功能：在c语言里面往MATLAB传送一组数据，并传输指令调用MTest.m进行处理，得到返回结果num和level。
更多链接：
https://ww2.mathworks.cn/help/matlab/matlab-c-api-to-read-mat-file-data.html;jsessionid=b47c81b204f996c1734216829d51?nocookie=true&ue