小编Khu*_*min的帖子

#include <leveldb/status.h>
#include <leveldb/db.h>
#include <leveldb/write_batch.h>
...
int arg_offset = 0;
leveldb::DB* db1;
leveldb::Options options;
options.error_if_exists = true;
options.create_if_missing = true;
options.write_buffer_size = 268435456;
leveldb::WriteBatch* batch;
...
if (db_backend == "leveldb") 
{  
    // leveldb
    LOG(INFO) << "Opening leveldb " << argv[arg_offset+2];
    leveldb::Status status1 = leveldb::DB::Open(options, argv[arg_offset+2], &db1);
    CHECK(status1.ok()) << "Failed to open leveldb " << argv[arg_offset+2];
    batch = new leveldb::WriteBatch();
}

上面的代码段会生成以下错误

$ g++ tools/convert_imageset_and_disparity.cpp -MMD -MP -pthread -fPIC -DCAFFE_VERSION=1.0.0-rc5 -DNDEBUG -O2 -DUSE_OPENCV -DUSE_LEVELDB -DUSE_LMDB -DWITH_PYTHON_LAYER -I/usr/include/python3.5m -I/usr/lib/python3.5/dist-packages/numpy/core/include -I/usr/local/include -I/usr/include/hdf5/serial …

我用luarocks安装了'image'包

$ luarocks  install image

一切都安装没有任何错误.每当我尝试使用它时,都会返回以下错误:

> th> require('image')
>
> /home/khurram/torch/install/share/lua/5.1/trepl/init.lua:384:
> /home/khurram/torch/install/share/lua/5.1/trepl/init.lua:384: module
> 'sys.fpath' not found:No LuaRocks module found for sys.fpath  no field
> package.preload['sys.fpath']  no file
> '/home/khurram/.luarocks/share/lua/5.1/sys/fpath.lua'     no file
> '/home/khurram/.luarocks/share/lua/5.1/sys/fpath/init.lua'    no file
> '/home/khurram/torch/install/share/lua/5.1/sys/fpath.lua'     no file
> '/home/khurram/torch/install/share/lua/5.1/sys/fpath/init.lua'    no
> file './sys/fpath.lua'    no file
> '/home/khurram/torch/install/share/luajit-2.1.0-beta1/sys/fpath.lua'
>   no file '/usr/local/share/lua/5.1/sys/fpath.lua'    no file
> '/usr/local/share/lua/5.1/sys/fpath/init.lua'     no file
> '/home/khurram/.luarocks/lib/lua/5.1/sys/fpath.so'    no file
> '/home/khurram/torch/install/lib/lua/5.1/sys/fpath.so'    no file
> '/home/khurram/torch/install/lib/sys/fpath.so'    no file
> './sys/fpath.so'  no file '/usr/local/lib/lua/5.1/sys/fpath.so'   no …