MATLAB MEX 无法使用 XCode 4.3 (Mac) 找到标准库
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MATLAB MEX can't find standard library with XCode 4.3 (Mac)
提问by Bryan P
I am getting started with using MEX files for MATLAB (R2012a) compiled from C code (using XCode 4.3) on my Mac (running OSX 10.7.3, Lion). I have already installed the MATLAB provided XCode patchwhich configures MATLAB to use the new llvm-gcc compiler under XCode 4.2+, but I am still getting the following error attempting to compile the example file using mex timestwo.c:
我开始在我的 Mac（运行 OSX 10.7.3，Lion）上使用从 C 代码（使用 XCode 4.3）编译的 MATLAB（R2012a）的 MEX 文件。我已经安装了 MATLAB 提供的XCode 补丁，该补丁将 MATLAB 配置为在 XCode 4.2+ 下使用新的 llvm-gcc 编译器，但尝试使用以下命令编译示例文件时仍然出现以下错误mex timestwo.c：
/Applications/MATLAB_R2012a.app/extern/include/matrix.h:852:20: error: stdlib.h: No such file or directory
In file included from timestwo.c:1:
/Applications/MATLAB_R2012a.app/extern/include/mex.h:161:19: error: stdio.h: No such file or directory
The compilation then breaks
编译然后中断
mex: compile of ' "timestwo.c"' failed.
Error using mex (line 206)
Unable to complete successfully.
Clearly, the compiler can't find the standard library header directory, but what do I need to change to successfully compile?
显然，编译器找不到标准库头目录，但是我需要更改什么才能成功编译？
回答by Bryan P
Ah, found it!
啊，找到了！
The MATLAB provided template uses /Developer/... for the SDK location, but this changed under XCode4.3 to live under the XCode.app. To fix things, I had to edit my ~/.matlab/R2012a/mexopts.shfile to set the SDKROOT directory to the new location.
MATLAB 提供的模板使用 /Developer/... 作为 SDK 位置，但这在 XCode4.3 下已更改为位于 XCode.app 下。为了解决问题，我必须编辑我的~/.matlab/R2012a/mexopts.sh文件以将 SDKROOT 目录设置为新位置。
To do this, search for SDKROOT in the mexopts.sh file and change it to read:
为此，请在 mexopts.sh 文件中搜索 SDKROOT 并将其更改为：
SDKROOT='/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.7.sdk/'
Note, I chose the 10.7 sdk b/c I am on Lion. Use 10.6 if you are on Snow Leopard
请注意，我在 Lion 上选择了 10.7 sdk b/c。如果您使用的是 Snow Leopard，请使用 10.6
回答by fgar
I am running Mac Mountain Lion and Matlab R2012b, and the following solution worked for me: Matlab 2012a Mex to work with Xcode 4.5 on Mountain Lion
我正在运行 Mac Mountain Lion 和 Matlab R2012b，以下解决方案对我有用：Matlab 2012a Mex to work with Xcode 4.5 on Mountain Lion
To be precise, I was getting the following errors:
准确地说，我收到以下错误：
error: stdio.h: No such file or directory
error: stdio.h: No such file or directory
error: stdlib.h: No such file or directory
error: stdlib.h: No such file or directory
error: math.h: No such file or directory
error: math.h: No such file or directory
So what I did to solve this issue:
所以我做了什么来解决这个问题：
I installed Xcode with Command Line Tools, and then edited the file "/Applications/MATLAB_R2012b.app/bin/mexopts.sh" by:
我使用命令行工具安装了 Xcode，然后通过以下方式编辑了文件“/Applications/MATLAB_R2012b.app/bin/mexopts.sh”：
changing CC from gcc-4.2 to llvm-gcc-4.2
将 CC 从 gcc-4.2 更改为 llvm-gcc-4.2
changing CXX from gcc-4.2 to llvm-g++-4.2
将 CXX 从 gcc-4.2 更改为 llvm-g++-4.2
setting SDKROOT to '/'
将 SDKROOT 设置为“/”
Then I ran "mex -setup" in MATLAB, chose number 1, and chose y to overwrite the old /Users/insertyournamehere/.matlab/R2012b/mexopts.sh
然后我在 MATLAB 中运行“mex -setup”，选择数字 1，并选择 y 覆盖旧的 /Users/insertyournamehere/.matlab/R2012b/mexopts.sh
That solved it :)
那解决了它:)
回答by lizzie
You will find valuable information here: http://www.mathworks.fr/support/solutions/en/data/1-FR6LXJ/
您会在这里找到有价值的信息：http: //www.mathworks.fr/support/solutions/en/data/1-FR6LXJ/
