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poster · 2019-12-14, 20:13

我已经从官方站点下载了libsvm for MATLAB （我正在使用MATLAB 2010b），但是每当运行make文件时，我都会得到：

>> make Error svm.cpp: 13 syntax error; found `' Error svm.cpp: 13 syntax error; found `T' expecting `;' Error svm.cpp: 13 syntax error; found `min' expecting `;' Error svm.cpp: 13 syntax error; found `x' expecting `)' Error svm.cpp: 13 skipping `x' `,' `T' `y' Error svm.cpp: 13 undeclared identifier `x' Error svm.cpp: 13 undeclared identifier `y' Warning svm.cpp: 13 possible usage of x before definition Warning svm.cpp: 13 possible usage of y before definition Error svm.cpp: 16 syntax error; found `' Error svm.cpp: 16 syntax error; found `T' expecting `;' Error svm.cpp: 16 syntax error; found `max' expecting `;' Error svm.cpp: 16 syntax error; found `x' expecting `)' Error svm.cpp: 16 skipping `x' `,' `T' `y' Error svm.cpp: 16 too many errors C:\MATLAB\R2010B\BIN\MEX.PL: Error: Compile of 'svm.cpp' failed. ??? Error using ==> mex at 208 Unable to complete successfully. Error in ==> make at 5 mex -O -c svm.cpp 甚至执行单个指令，例如：mex -O -c svm.cpp

我收到相同的错误，我在做什么错

局部放电

我已经验证了编译器问题：

>> mex -setup Please choose your compiler for building external interface (MEX) files: Would you like mex to locate installed compilers [y]/n? y Select a compiler: [1] Lcc-win32 C 2.4.1 in C:\MATLAB\R2010b\sys\lcc [0] None Compiler: 1 Please verify your choices: Compiler: Lcc-win32 C 2.4.1 Location: C:\MATLAB\R2010b\sys\lcc Are these correct [y]/n? y Trying to update options file: C:\AppData\Roaming\MathWorks\MATLAB\R2010b\mexopts.bat From template: C:\MATLAB\R2010b\bin\win32\mexopts\lccopts.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/support/sol...ution=1-5C27B9 Building with the -largeArrayDims option enables the new API. **************************************************************************

回答：

Matlab附带的内置编译器是lcc： http : //www.cs.virginia.edu/~lcc-win32/ ，它是C编译器，因此无法编译cpp代码。参见此处： http : //www.mathworks.com/support/tech-notes/1600/1605.html#C_compiling

您必须通过mex -setup或自己编辑mexopts.bat来安装另一个编译器并配置Matlab以使用它。

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2019-12-14, 20:13	#1
poster 高级会员注册日期: 2019-11-21 帖子: 3,006 声望力: 66	libsvm.cpp编译错误MATLAB 我已经从官方站点下载了libsvm for MATLAB （我正在使用MATLAB 2010b），但是每当运行make文件时，我都会得到： >> make Error svm.cpp: 13 syntax error; found `' Error svm.cpp: 13 syntax error; found `T' expecting `;' Error svm.cpp: 13 syntax error; found `min' expecting `;' Error svm.cpp: 13 syntax error; found `x' expecting `)' Error svm.cpp: 13 skipping `x' `,' `T' `y' Error svm.cpp: 13 undeclared identifier `x' Error svm.cpp: 13 undeclared identifier `y' Warning svm.cpp: 13 possible usage of x before definition Warning svm.cpp: 13 possible usage of y before definition Error svm.cpp: 16 syntax error; found `' Error svm.cpp: 16 syntax error; found `T' expecting `;' Error svm.cpp: 16 syntax error; found `max' expecting `;' Error svm.cpp: 16 syntax error; found `x' expecting `)' Error svm.cpp: 16 skipping `x' `,' `T' `y' Error svm.cpp: 16 too many errors C:\MATLAB\R2010B\BIN\MEX.PL: Error: Compile of 'svm.cpp' failed. ??? Error using ==> mex at 208 Unable to complete successfully. Error in ==> make at 5 mex -O -c svm.cpp 甚至执行单个指令，例如：mex -O -c svm.cpp 我收到相同的错误，我在做什么错局部放电我已经验证了编译器问题： >> mex -setup Please choose your compiler for building external interface (MEX) files: Would you like mex to locate installed compilers [y]/n? y Select a compiler: [1] Lcc-win32 C 2.4.1 in C:\MATLAB\R2010b\sys\lcc [0] None Compiler: 1 Please verify your choices: Compiler: Lcc-win32 C 2.4.1 Location: C:\MATLAB\R2010b\sys\lcc Are these correct [y]/n? y Trying to update options file: C:\AppData\Roaming\MathWorks\MATLAB\R2010b\mexopts.bat From template: C:\MATLAB\R2010b\bin\win32\mexopts\lccopts.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/support/sol...ution=1-5C27B9 Building with the -largeArrayDims option enables the new API. ********************************************************************** 回答：** Matlab附带的内置编译器是lcc： http : //www.cs.virginia.edu/~lcc-win32/ ，它是C编译器，因此无法编译cpp代码。参见此处： http : //www.mathworks.com/support/tech-notes/1600/1605.html#C_compiling 您必须通过mex -setup或自己编辑mexopts.bat来安装另一个编译器并配置Matlab以使用它。更多&回答...