c++ - 运行 OpenNI 2 类时出错(gcc 4.7.2/ubuntu 12.10)

Question

我正在尝试编译运行下面给出的一个非常基本的程序 (test.cpp)，它调用 OpenNI 类。您可以在此处查看它们所在的文件和目录。抱歉，某些字符在浏览器的编码中出现了一些问题。我正在使用 linux 命令:tree，如果您知道更好的命令请告诉我，我会更新它。

File Structure

我正在按照指南 here ，参见“GCC/GNU Make”。

#include < stdio.h > 
#include < OpenNI.h > 

using namespace openni; 

int 
main ( void ) 
{ 
    Status rc = OpenNI::initialize(); 

    if (rc != STATUS_OK) 
    { 
        printf("\nInitialize failed\n%s\n", OpenNI::getExtendedError()); 
        return 1; 
    } 

    printf("Hello, world!\n"); 
    return 0; 
} 

这是我在命令行中运行的编译程序(gcc 4.7.2):

gcc test.cpp -I../OpenNI-2.0.0/Include -L/home/evan/Code/OpenNi/Init -l OpenNI2 -o test 

这工作正常，但是当我运行 ./test 时，出现以下错误:

Initialize failed 
DeviceDriver: library handle is invalid for file libOniFile.so 
Couldn't understand file 'libOniFile.so' as a device driver 
DeviceDriver: library handle is invalid for file libPS1080.so 
Couldn't understand file 'libPS1080.so' as a device driver 
Found no valid drivers in './OpenNI2/Drivers' 

谢谢，我们将不胜感激。

Answer 1

导游的指示说，

It is highly suggested to also add the "-Wl,-rpath ./" to your linkage command. Otherwise, the runtime linker will not find the libOpenNI.so file when you run your application. (default Linux behavior is to look for shared objects only in /lib and /usr/lib).

看来您确实遇到了这个问题——找不到某些库。尝试将正确的 rpath(在你的情况下似乎是/home/evan/Code/OpenNi/Init/OpenNI2/Drivers)添加到你的编译字符串。