问题描述
现在，MATLAB 2012a中的mex仅正式支持gcc 4.4.6，但我要自担风险使用gcc 4.7.现在，如果我直接用mex编译东西，它会抱怨
Now mex in MATLAB 2012a only officially supports gcc 4.4.6 but I want to use gcc 4.7 at my own risk. Now If I compile something with mex directly, it will complain that
/usr/lib/gcc/i686-linux-gnu/4.7/cc1plus:
/usr/local/MATLAB/R2012a/sys/os/glnx86/libstdc++.so.6:
version `GLIBCXX_3.4.15' not found
(required by /usr/lib/i386-linux-gnu/libppl_c.so.4)
/usr/lib/gcc/i686-linux-gnu/4.7/cc1plus:
/usr/local/MATLAB/R2012a/sys/os/glnx86/libstdc++.so.6:
version `GLIBCXX_3.4.15' not found
(required by /usr/lib/i386-linux-gnu/libppl.so.9)
通过strings /usr/lib/i386-linux-gnu/libstdc++.so.6 | grep 'GLIBCXX'我确认此libstdc++.so.6具有该版本字符串.我查看了mexopts.sh并在该脚本中修改了变量$RPATH和$MLIBS，但是它不起作用.因此，如果我不使用符号链接，那么在哪里可以配置mex使用的libstdc++.so.6的路径?谢谢.
By strings /usr/lib/i386-linux-gnu/libstdc++.so.6 | grep 'GLIBCXX' I confirm that this libstdc++.so.6 has that version string. I reviewed mexopts.sh and modified the variable $RPATH and $MLIBS in that script, but it doesn't work. So if I don't use symbolic link, where can I config the path of the libstdc++.so.6 that mex uses? Thank you.
推荐答案
您需要创建指向gcc 4.7库的符号链接，以便matlab知道要使用它.像这样:
You need to create a symbolic link to the gcc 4.7 library so matlab knows to use it. Something like:
ln -s {/path/to/file-name} {link-name}
如果您不想使用符号链接，只需在启动matlab的终端中定义此路径:
If you don't want to use symbolic links, then just define this path in a terminal from which you launch matlab:
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/path/to/libstdc++.so.6
./matlab
这篇关于如何告诉mex链接到/usr/lib中的libstdc ++.so.6而不是MATLAB目录中的libstdc ++.so.6?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！