c - 在 Matlab 中编译 mex 文件时找不到标准 C 库

Question

更新:我安装了 XCode 并更改了 mexopts.sh 中的 SDKROOT 以反射(reflect)描述的实际路径 here ，但是当我包含 mex.h 时我仍然会收到此错误:

In file included from /Applications/MATLAB_R2012b.app/extern/include/matrix.h:294,
                 from /Applications/MATLAB_R2012b.app/extern/include/mex.h:58,
                 from test.c:2:
/Applications/MATLAB_R2012b.app/extern/include/tmwtypes.h:61:21: error: float.h: No such file or directory

    mex: compile of ' "test.c"' failed.

---

我正在尝试通过 mex 编译一个简单的 C 文件以在 Matlab 中使用，但它似乎永远找不到我知道已安装的默认库。例如，尝试编译以下内容:

#include <string.h>
int main() {
    return 0;
}

给我错误:

test.c:1:20: error: string.h: No such file or directory
mex: compile of ' "test.c"' failed.

即使它使用 gcc 编译得很好。更糟糕的是，当我尝试像这样包含 mex.h 时:

#include "mex.h"
int main() {
    return 0;
}

我收到以下错误:

In file included from /Applications/MATLAB_R2012b.app/extern/include/mex.h:58,
                 from test.c:2:
/Applications/MATLAB_R2012b.app/extern/include/matrix.h:293:20: error: stddef.h: No such file or directory
In file included from /Applications/MATLAB_R2012b.app/extern/include/matrix.h:294,
                 from /Applications/MATLAB_R2012b.app/extern/include/mex.h:58,
                 from test.c:2:
/Applications/MATLAB_R2012b.app/extern/include/tmwtypes.h:43:20: error: limits.h: No such file or directory
/Applications/MATLAB_R2012b.app/extern/include/tmwtypes.h:46:21: error: stdbool.h: No such file or directory
/Applications/MATLAB_R2012b.app/extern/include/tmwtypes.h:61:21: error: float.h: No such file or directory
/Applications/MATLAB_R2012b.app/extern/include/tmwtypes.h:777:2: error: #error "This code must be compiled using a 2's complement representation for signed integer values"
In file included from /Applications/MATLAB_R2012b.app/extern/include/matrix.h:294,
                 from /Applications/MATLAB_R2012b.app/extern/include/mex.h:58,
                 from test.c:2:
/Applications/MATLAB_R2012b.app/extern/include/tmwtypes.h:823: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'CHAR16_T'
In file included from /Applications/MATLAB_R2012b.app/extern/include/mex.h:58,
                 from test.c:2:
/Applications/MATLAB_R2012b.app/extern/include/matrix.h:319: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'mxChar'
/Applications/MATLAB_R2012b.app/extern/include/matrix.h:375: error: expected ')' before 'n'
/Applications/MATLAB_R2012b.app/extern/include/matrix.h:383: error: expected ')' before 'n'
/Applications/MATLAB_R2012b.app/extern/include/matrix.h:397: error: expected declaration specifiers or '...' before 'size_t'
/Applications/MATLAB_R2012b.app/extern/include/matrix.h:590: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'mxGetNumberOfElements'
/Applications/MATLAB_R2012b.app/extern/include/matrix.h:632: error: expected '=', ',', ';', 'asm' or '__attribute__' before '*' token
/Applications/MATLAB_R2012b.app/extern/include/matrix.h:688: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'mxGetM'
/Applications/MATLAB_R2012b.app/extern/include/matrix.h:700: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'mxGetN'
/Applications/MATLAB_R2012b.app/extern/include/matrix.h:750: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'mxGetElementSize'
In file included from /Applications/MATLAB_R2012b.app/extern/include/mex.h:58,
             from test.c:2:
/Applications/MATLAB_R2012b.app/extern/include/matrix.h:851:20: error: stdlib.h: No such file or directory
/Applications/MATLAB_R2012b.app/extern/include/matrix.h:1072: error: expected ')' before 'm'
In file included from test.c:2:
/Applications/MATLAB_R2012b.app/extern/include/mex.h:91: error: expected specifier-qualifier-list before 'size_t'
In file included from test.c:2:
/Applications/MATLAB_R2012b.app/extern/include/mex.h:161:19: error: stdio.h: No such file or directory

    mex: compile of ' "test.c"' failed.

我假设 mex 没有在正确的位置寻找这些库，或者安装以某种方式损坏，但我不知道如何修复它。

Mac OSX Mountain Lion + XCode 4.5.2、Matlab R2012b、gcc 4.2.1

Answer 1

包含文件需要在您的 PATH 中(键入 path 以显示这些文件夹)，除非您使用 mex -Ipathname< 专门包含它们/em>。您可以单击“文件->设置路径”并添加包含您的 string.h 的文件夹。