caffe之blob_demo.cpp正常运行大法-优快云博客

本文提供了一个使用 Caffe 的 Blob 类进行形状调整的示例代码，并记录了在编译过程中遇到的错误及解决方法。通过修改编译命令加入缺失的库文件，成功解决了链接器错误。

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声明啊:我电脑名砸叫erkp,caffe放在caffe-master里.各位自己改咯
写个blob_demo.cpp如下:

#include <vector>
#include <iostream>
#include <caffe/blob.hpp>
using namespace std;
using namespace caffe;

int main(void)
{
  Blob<float> a;
  cout<<"size : "<<a.shape_string()<<endl;
  a.Reshape(1,2,3,4);
  cout<<"size : "<<a.shape_string()<<endl;
  return 0;
}

然后编译它:

g++ -o app blob_demo.cpp -I/home/erkp/caffe-master/include/ -D CPU_ONLY -I/home/erkp/caffe-master/.build_release/src/ -L/home/erkp/caffe-master/build/lib/ -lcaffe

小尾巴:本来一开始上面的命令就ok的,但是啊,但是,第二次再用就报错了,需要变成这样才ok.

g++ -o app blob_demo.cpp -I/home/erkp/caffe-master/include/ -D CPU_ONLY -I/home/erkp/caffe-master/.build_release/src/ -L/home/erkp/caffe-master/build/lib/ -lcaffe -lboost_system -lglog

报错是这样的:

/usr/bin/ld: /tmp/cc6WYCki.o: undefined reference to symbol '_ZN5boost6system15system_categoryEv'
//usr/lib/x86_64-linux-gnu/libboost_system.so.1.54.0: error adding symbols: DSO missing from command line
collect2: error: ld returned 1 exit status

 /usr/bin/ld: /tmp/ccSKSAYE.o: undefined reference to symbol '_ZN6google4base21CheckOpMessageBuilderD1Ev'
//usr/lib/x86_64-linux-gnu/libglog.so.0: error adding symbols: DSO missing from command line
collect2: error: ld returned 1 exit status

然后设置一下下:

export LD_LIBRARY_PATH=/home/erkp/caffe-master/build/lib/:$LD_LIBRARY_PATH

搞起:

./app

looklook result:

erkp@erkp:~/caffe-master$ g++ -o app blob_demo.cpp -I/home/erkp/caffe-master/include/ -D CPU_ONLY -I/home/erkp/caffe-master/.build_release/src/ -L/home/erkp/caffe-master/build/lib/ -lcaffe  
erkp@erkp:~/caffe-master$ export LD_LIBRARY_PATH=/home/erkp/caffe-master/build/lib/:$LD_LIBRARY_PATH
erkp@erkp:~/caffe-master$ ./app
size : (0)
size : 1 2 3 4 (24)
erkp@erkp:~/caffe-master$