matlab接口的編譯真是淚千行。。。本來我是不用matlab的 ，但是帶我的師兄只用matlab，為了學習他的程序我不得不編譯接口。。。
make matcaffe之后一開始就出現了gcc版本不合的問題，這個我猜大部分人都遇到過
目前caffe只支持4.7版本
因此我們要降級gcc和g++
我用的就是這位博主的方法，查了很多其他的方法都沒用。。。各位看官可以去圍觀一波。。這個方法我用完就可以編譯了
http://www.cnblogs.com/loveyakamoz/archive/2012/12/26/2833967.html
最棒棒的是這個方法並不會刪除gcc版本，以后你想升回來很方便！是不是很棒棒！
把gcc編譯好之后又遇到了另一個問題
1 $make matcaffe -j8 2 MEX matlab/+caffe/private/caffe_.cpp 3 使用 'g++' 編譯。 4 /home/zkk/caffe/matlab/+caffe/private/caffe_.cpp: In function ‘void delete_solver(int, mxArray**, int, const mxArray**)’: 5 /home/zkk/caffe/matlab/+caffe/private/caffe_.cpp:208:3: warning: lambda expressions only available with -std=c++11 or -std=gnu++11 [enabled by default] 6 /home/zkk/caffe/matlab/+caffe/private/caffe_.cpp:208:4: error: no matching function for call to ‘remove_if(std::vector<boost::shared_ptr<caffe::Solver<float> > >::iterator, std::vector<boost::shared_ptr<caffe::Solver<float> > >::iterator, delete_solver(int, mxArray**, int, const mxArray**)::<lambda(const boost::shared_ptr<caffe::Solver<float> >&)>)’ 7 /home/zkk/caffe/matlab/+caffe/private/caffe_.cpp:208:4: note: candidate is: 8 In file included from /usr/include/c++/4.7/algorithm:63:0, 9 from ./include/caffe/blob.hpp:4, 10 from ./include/caffe/caffe.hpp:7, 11 from /home/zkk/caffe/matlab/+caffe/private/caffe_.cpp:18: 12 /usr/include/c++/4.7/bits/stl_algo.h:1166:5: note: template<class _FIter, class _Predicate> _FIter std::remove_if(_FIter, _FIter, _Predicate) 13 /home/zkk/caffe/matlab/+caffe/private/caffe_.cpp:208:4: error: template argument for ‘template<class _FIter, class _Predicate> _FIter std::remove_if(_FIter, _FIter, _Predicate)’ uses local type ‘delete_solver(int, mxArray**, int, const mxArray**)::<lambda(const boost::shared_ptr<caffe::Solver<float> >&)>’ 14 /home/zkk/caffe/matlab/+caffe/private/caffe_.cpp:208:4: error: trying to instantiate ‘template<class _FIter, class _Predicate> _FIter std::remove_if(_FIter, _FIter, _Predicate)’ 15 /home/zkk/caffe/matlab/+caffe/private/caffe_.cpp: In function ‘void delete_net(int, mxArray**, int, const mxArray**)’: 16 /home/zkk/caffe/matlab/+caffe/private/caffe_.cpp:293:3: warning: lambda expressions only available with -std=c++11 or -std=gnu++11 [enabled by default] 17 /home/zkk/caffe/matlab/+caffe/private/caffe_.cpp:293:4: error: no matching function for call to ‘remove_if(std::vector<boost::shared_ptr<caffe::Net<float> > >::iterator, std::vector<boost::shared_ptr<caffe::Net<float> > >::iterator, delete_net(int, mxArray**, int, const mxArray**)::<lambda(const boost::shared_ptr<caffe::Net<float> >&)>)’ 18 /home/zkk/caffe/matlab/+caffe/private/caffe_.cpp:293:4: note: candidate is: 19 In file included from /usr/include/c++/4.7/algorithm:63:0, 20 from ./include/caffe/blob.hpp:4, 21 from ./include/caffe/caffe.hpp:7, 22 from /home/zkk/caffe/matlab/+caffe/private/caffe_.cpp:18: 23 /usr/include/c++/4.7/bits/stl_algo.h:1166:5: note: template<class _FIter, class _Predicate> _FIter std::remove_if(_FIter, _FIter, _Predicate) 24 /home/zkk/caffe/matlab/+caffe/private/caffe_.cpp:293:4: error: template argument for ‘template<class _FIter, class _Predicate> _FIter std::remove_if(_FIter, _FIter, _Predicate)’ uses local type ‘delete_net(int, mxArray**, int, const mxArray**)::<lambda(const boost::shared_ptr<caffe::Net<float> >&)>’ 25 /home/zkk/caffe/matlab/+caffe/private/caffe_.cpp:293:4: error: trying to instantiate ‘template<class _FIter, class _Predicate> _FIter std::remove_if(_FIter, _FIter, _Predicate)’ 26 27 Makefile:518: recipe for target 'matlab/+caffe/private/caffe_.mexa64' failed 28 make: *** [matlab/+caffe/private/caffe_.mexa64] Error 255
各種百度無果。。。最后在caffe中文社區上找到的方法，，跟我一模一樣的問題
解決辦法是：
在Makefile里面，大約第410行那一句話
CXXFLAGS += -MMD -MP
下面添加CXXFLAGS += -std=c++11，
最后是這樣 CXXFLAGS += -MMD -MP CXXFLAGS += -std=c++11
然后在caffe根目錄下make clean,make all
賓果！matlab就這樣順利編譯好啦！！！
看着挺簡單。。。但是我能說我搜了兩三天嗎。。。。。給你們節省不少時間哈。。。。。