ln: /System/Library/Perl/Extras/5.18/SVN: Operation not permitted

git svn lone 中遇到的

错误问题：

Can't locate SVN/Core.pm in @INC (you may need to install the SVN::Core module) (@INC contains: 

/usr/local/git/lib/perl5/site_perl /Applications/SourceTree.app/Contents/Resources/git_local/lib/perl5/site_perl /Library/Perl/5.18/darwin-thread-multi-2level /Library/Perl/5.18 /Network/Library/Perl/5.18/darwin-thread-multi-2level /Network/Library/Perl/5.18
/Library/Perl/Updates/5.18.2 /System/Library/Perl/5.18/darwin-thread-multi-2level /System/Library/Perl/5.18 /System/Library/Perl/Extras/5.18/darwin-thread-multi-2level /System/Library/Perl/Extras/5.18 .) at /Applications/SourceTree.app/Contents/Resources/git_local/lib/perl5/site_perl/Git/SVN/Editor.pm
line 5.

BEGIN failed--compilation aborted at /Applications/SourceTree.app/Contents/Resources/git_local/lib/perl5/site_perl/Git/SVN/Editor.pm line 5.

Compilation failed in require at /Applications/SourceTree.app/Contents/Resources/git_local/libexec/git-core/git-svn line 81.

BEGIN failed--compilation aborted at /Applications/SourceTree.app/Contents/Resources/git_local/libexec/git-core/git-svn line 81.

Completed with errors, see above

原来网上找到的解决办法

sudo ln -s /Applications/Xcode.app/Contents/Developer/Library/Perl/5.18/darwin-thread-multi-2level/SVN /System/Library/Perl/Extras/5.18/SVN
sudo ln -s /Applications/Xcode.app/Contents/Developer/Library/Perl/5.18/darwin-thread-multi-2level/auto/SVN/ /System/Library/Perl/Extras/5.18/auto/SVN

但是运行发现提示错误 

ln: /System/Library/Perl/Extras/5.18/SVN: Operation not permitted

解决办法如下操作：

sudo ln -s /Applications/Xcode.app/Contents/Developer/Library/Perl/5.18/darwin-thread-multi-2level/SVN/ /Library/Perl/5.18/SVN
sudo mkdir /Library/Perl/5.18/auto
sudo ln -s /Applications/Xcode.app/Contents/Developer/Library/Perl/5.18/darwin-thread-multi-2level/auto/SVN/ /Library/Perl/5.18/auto/SVN