GCC C / C ++ MEX Matlab的R2015的Mac OS X（使用OpenMP）不工作 [英] GCC C/C++ MEX Matlab R2015 Mac OS X (with OpenMP) doesn't work

问题描述

我试图编译使用GCC / G ++在Matlab一个非常简单的MEX文件...
首先我检查，这是已经被安装在MATLAB：
！这GCC

输出：
在/ usr /斌/ gcc的...
之后，我试着做到以下几点：

  

    

MEX -v GCC ='的/ usr / bin中/海湾合作委员会的hello.c

  

但它剧照以X code编译锵...
这是使用G ++使用OpenMP库的并行计算。

众所周知，并非正式Mathworks公司的支持，但可能的。

解决方案

最后，我找到了解决之有道...
首先，mexopts.sh不会在文件夹中默认显示文件，要打开一个终端，寻找它​​与创建（MATLAB将自动MEX编译时重定向到它）：

 找到〜/ -name'mexopts.sh
 

和将会出现：

  /用户/ FOO //。垃圾桶/ MATLAB_R2014a.app /斌/ mexopts.sh
 

然后，复制如下：

  CP /Users/FOO//.Trash/MATLAB_R2014a.app/bin/mexopts.sh〜/ .matlab / R2014a
 

然后转到文件夹 CD〜/ .matlab / R2014a
并为您的用户的更改权限：

  CHMOD U + RWX mexopts.sh
 

然后，用默认的文本编辑器（推荐崇高文本）为打开：

 开放mexopts.sh
 

和编辑如下：
变化出现在哪里，以macosx10.7当前版本，在我的情况macos10.10
然后，修改以下各行如（ http://www.mathworks.com/matlabcentral describen /新闻阅读器/ view_thread / 334250 ）：

 ＃CC ='xcrun -sdk macosx10.7铛'#OLD
CC ='xcrun在/ usr / local / bin目录/ gcc的'#NEW＃CXX ='xcrun -sdk macosx10.7铛++ #OLD
 CXX ='xcrun在/ usr / local / bin目录/ G ++ #NEW＃CLIBS =$ CLIBS -lstdc ++#OLD
CLIBS =$ CLIBS -lstdc ++ -I在/ usr / local / lib目录-lgomp#directory＆LT; -I在/ usr / local / lib目录＆GT; ＃新
#CXXLIBS =$ MLIBS -lstdc ++#OLD
CXXLIBS =$ MLIBS -lstdc ++ -I在/ usr / local / lib目录-lgomp#NEW
 

注意事项：
请确保您当前的G ++ / G ++ 4.9能够使用OpenMP编译，试图包括＆LT; omp.h＆GT; 在一个Hello World文件中的命令行做

  G ++  -  4.9 -o测试HELLO.CPP -fopenmp
 

或

  G ++ -o测试HELLO.CPP -fopenmp
 

也有可能是一个文件被损坏，有必要做<一href=\"http://stackoverflow.com/questions/26950421/can-not-compile-fortran-because-dyld-library-not-loaded\">Can库未加载：因为dyld的不FORTRAN编译

  BREW RM cloog酿造安装cloog
 

（但是首先检查）...

也有可能是，如果你不能够与OMP编译是必要的，这里描述先做两件事情（<一个href=\"http://stackoverflow.com/questions/29057437/compile-openmp-programs-with-gcc-compiler-on-os-x-yosemite\">Compile与OS X的优胜美地 gcc编译OpenMP程序）：
1.有一个新的gcc编译器从 http://hpc.sourceforge.net/
2.将通过$一个新的可执行文件夹sudo的焦油-xvf GCC-4.9-bin.tar -C /
3.切换到它通过出口PATH =的/ usr / local / bin目录：$ PATH

最后，尝试编译MEX文件有：

  MEX HELLO.CPP COMPFLAGS =/ OpenMP的$ COMPFLAGS
 

这就是它
......

I'm trying to compile a very simple MEX file in Matlab using GCC/G++... First I checked that this is already installed in matlab by: !which gcc

output: /usr/bin/gcc ... After, I tried to do the following:

mex -v GCC='/usr/bin/gcc' hello.c

but it stills compiling with XCode Clang... This is to use G++ with OPENMP library for parallel computing.

Is known that is NOT OFFICIALLY Supported by Mathworks, but POSSIBLE.

解决方案

Finally, I found a proper way to solve it... First, the file mexopts.sh doesn't appear in the folder by default, is necessary to open a terminal and look for it and create it (then Matlab will redirect to it automatically when compiling with MEX):

find ~/ -name 'mexopts.sh' 

and will appear:

/Users/FOO//.Trash/MATLAB_R2014a.app/bin/mexopts.sh

Then, copy it as:

cp /Users/FOO//.Trash/MATLAB_R2014a.app/bin/mexopts.sh ~/.matlab/R2014a

then go to the folder cd ~/.matlab/R2014a and change permissions for your user as:

chmod u+rwx mexopts.sh

then, open it with your default text editor (Sublime text recommended) as:

open mexopts.sh

and edit the following: Change where appears macosx10.7 to your current version, in my case macos10.10 then, modify the following lines as describen in (http://www.mathworks.com/matlabcentral/newsreader/view_thread/334250):

# CC='xcrun -sdk macosx10.7 clang' #OLD
CC='xcrun /usr/local/bin/gcc' #NEW



# CXX='xcrun -sdk macosx10.7 clang++' #OLD
 CXX='xcrun /usr/local/bin/g++' #NEW



# CLIBS="$CLIBS -lstdc++" #OLD
CLIBS="$CLIBS -lstdc++ -I/usr/local/lib -lgomp" #directory <-I/usr/local/lib> #NEW
#CXXLIBS="$MLIBS -lstdc++" #OLD
CXXLIBS="$MLIBS -lstdc++ -I/usr/local/lib -lgomp" #NEW

IMPORTANT NOTE: Make sure that your current G++/G++4.9 is able to compile with OpenMP, trying to include <omp.h> in a hello world file doing in the command line:

g++-4.9 -o test hello.cpp -fopenmp

or

g++ -o test hello.cpp -fopenmp

is also possible that a file is corrupted and is necessary to do Can not compile fortran because dyld: Library not loaded :

brew rm cloog

brew install cloog

(But check first)...

Is also possible that if you're not able to compile with OMP is necessary to do first a couple of things as described here (Compile OpenMP programs with gcc compiler on OS X Yosemite): 1. Got a new gcc complier from http://hpc.sourceforge.net/ 2. Place a new executable folder by $ sudo tar -xvf gcc-4.9-bin.tar -C / 3. Switched to it by export PATH=/usr/local/bin:$PATH

Finally, try to compile your MEX file with:

mex hello.cpp COMPFLAGS="/openmp $COMPFLAGS"

That's it ... .

这篇关于GCC C / C ++ MEX Matlab的R2015的Mac OS X（使用OpenMP）不工作的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！