本來SSD做測試的Python介面用起來也是比較方便的，但是如果部署整合的話，肯定要用c++環境，於是動手鼓搗了一下。

編譯用的cmake，寫的CMakeList.txt，期間碰到一些小問題，簡單記錄一下問題以及解決方法。

當然前提是你本地的caffe環境沒啥問題。各種依賴都安好了。。

1.error: ‘AnnotatedDatum’ has not been declared    AnnotatedDatum* anno_datum);

/home/jiawenhao/ssd/caffe/include/caffe/util/io.hpp:192:40: error: ‘AnnotatedDatum_AnnotationType
 
’ does not name a type
     const std::string& encoding, const AnnotatedDatum_AnnotationType type,
                                        ^
/home/jiawenhao/ssd/caffe/include/caffe/util/io.hpp:194:5: error: ‘AnnotatedDatum’ has not been declared
     AnnotatedDatum* anno_datum);
     ^
/home/jiawenhao/ssd/caffe/include/caffe/util/io.hpp:199
 
:11: error: ‘AnnotatedDatum_AnnotationType’ does not name a type
     const AnnotatedDatum_AnnotationType type, const string& labeltype,
           ^
/home/jiawenhao/ssd/caffe/include/caffe/util/io.hpp:200:49: error: ‘AnnotatedDatum’ has not been declared
     const std::map<string, int>& name_to_label, AnnotatedDatum* anno_datum) {
                                                 
 
^
/home/jiawenhao/ssd/caffe/include/caffe/util/io.hpp:208:5: error: ‘AnnotatedDatum’ has not been declared
     AnnotatedDatum* anno_datum);
     ^
/home/jiawenhao/ssd/caffe/include/caffe/util/io.hpp:212:5: error: ‘AnnotatedDatum’ has not been declared
     AnnotatedDatum* anno_datum);
     ^
/home/jiawenhao/ssd/caffe/include/caffe/util/io.hpp:215:22: error: ‘AnnotatedDatum’ has not been declared
     const int width, AnnotatedDatum* anno_datum);
                      ^
/home/jiawenhao/ssd/caffe/include/caffe/util/io.hpp:218:30: error: ‘LabelMap’ has not been declared
     const string& delimiter, LabelMap* map);
                              ^
/home/jiawenhao/ssd/caffe/include/caffe/util/io.hpp:221:32: error: ‘LabelMap’ has not been declared
       bool include_background, LabelMap* map) {
                                ^

caffe.pb.h這個檔案有問題。

在本地find了一下，

發現是有這個檔案的，

於是在/ssd/caffe/include/caffe下 mkdir一下 proto，然後把 caffe.bp.h 複製過來就好了。

如果沒有 caffe.pb.h可以用命令生成這個檔案，生成方法google一下就好了。。。。

2.連結庫的問題。錯誤提示說明用到了這個庫，但是程式沒找到。在CMakeList.txt裡填上 libflags.so即可 ，其他so庫同理。

/usr/bin/ld: CMakeFiles/ssd_detect.dir/ssd_detect.cpp.o: undefined reference to symbol '_ZN6google14FlagRegistererC1EPKcS2_S2_S2_PvS3_'
/usr/lib/x86_64-linux-gnu/libgflags.so.2: error adding symbols: DSO missing from command line
collect2: error: ld returned 1 exit status
CMakeFiles/ssd_detect.dir/build.make:102: recipe for target 'ssd_detect' failed
make[2]: *** [ssd_detect] Error 1

這個是CMakeList.txt內容。 就是指定好include路徑，還有需要用到的各種庫的路徑。

cmake_minimum_required (VERSION 2.8)  
add_definitions(-std=c++11)
project (ssd_detect)  
  
add_executable(ssd_detect ssd_detect.cpp)  
  
include_directories (/home/yourpath/ssd/caffe/include      
    /usr/include    
    /usr/local/include  
    /usr/local/cuda/include    
         
     )  
  
target_link_libraries(ssd_detect  
     /home/yourpath/ssd/caffe/build/lib/libcaffe.so
     /usr/local/lib/libopencv_core.so 
     /usr/local/lib/libopencv_imgproc.so
     /usr/local/lib/libopencv_imgcodecs.so 
    /usr/local/lib/libopencv_highgui.so
    /usr/local/lib/libopencv_videoio.so
    /usr/lib/x86_64-linux-gnu/libgflags.so     
    /usr/lib/x86_64-linux-gnu/libglog.so    
    /usr/lib/x86_64-linux-gnu/libprotobuf.so    
    /usr/lib/x86_64-linux-gnu/libboost_system.so    
    )