ldd找不到库

Question

我已阅读this,this和this。

我在一个costum路径/home/luca/ParallelOpenCV/install_icpc/lib，那里是libopencv_core.so安装OpenCV的：

luca@jarvis:~$ ldd /home/luca/ParallelOpenCV/install_icpc/lib/libopencv_core.so 
    linux-vdso.so.1 => (0x00007ffccb389000) 
    libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f46af719000) 
    libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f46af410000) 
    libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f46af1f2000) 
    librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007f46aefea000) 
    libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007f46aedd0000) 
    libimf.so => /opt/intel/compilers_and_libraries_2017.1.132/linux/compiler/lib/intel64/libimf.so (0x00007f46ae8e3000) 
    libsvml.so => /opt/intel/compilers_and_libraries_2017.1.132/linux/compiler/lib/intel64/libsvml.so (0x00007f46ad9d8000) 
    libirng.so => /opt/intel/compilers_and_libraries_2017.1.132/linux/compiler/lib/intel64/libirng.so (0x00007f46ad663000) 
    libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007f46ad2e0000) 
    libiomp5.so => /opt/intel/compilers_and_libraries_2017.1.132/linux/compiler/lib/intel64/libiomp5.so (0x00007f46acf3d000) 
    libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f46acd27000) 
    libintlc.so.5 => /opt/intel/compilers_and_libraries_2017.1.132/linux/compiler/lib/intel64/libintlc.so.5 (0x00007f46acabc000) 
    libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f46ac6f3000) 
    /lib64/ld-linux-x86-64.so.2 (0x000055f67574e000) 

我加入了路径LD_LIBRARY_PATH和我执行ldconfig，但：

luca@jarvis:~$ ldd libopencv_core.so 
ldd: ./libopencv_core.so: No such file or directory 

我是什么失踪？

Answer 1

从man ldd： -

NAME 

     ldd - print shared object dependencies 
SYNOPSIS   top 

     ldd [option]... file... 
DESCRIPTION 

     ldd prints the shared objects (shared libraries) required by each 
     program or shared object specified on the command line. An example 
     of its use and output is the following: 

     $ ldd /bin/ls 
       linux-vdso.so.1 (0x00007ffcc3563000) 
       libselinux.so.1 => /lib64/libselinux.so.1 (0x00007f87e5459000) 
       libcap.so.2 => /lib64/libcap.so.2 (0x00007f87e5254000) 
       libc.so.6 => /lib64/libc.so.6 (0x00007f87e4e92000) 
       libpcre.so.1 => /lib64/libpcre.so.1 (0x00007f87e4c22000) 
       libdl.so.2 => /lib64/libdl.so.2 (0x00007f87e4a1e000) 
       /lib64/ld-linux-x86-64.so.2 (0x00005574bf12e000) 
       libattr.so.1 => /lib64/libattr.so.1 (0x00007f87e4817000) 
       libpthread.so.0 => /lib64/libpthread.so.0 (0x00007f87e45fa000) 

你的命令的输出：

luca@jarvis:~$ ldd libopencv_core.so 
ldd: ./libopencv_core.so: No such file or directory 

说，程序或在 命令行指定的共享对象理应不在存在隐含目录= ./ = /home/luca。 我们知道它存在于/home/luca/ParallelOpenCV/install_icpc/lib。

如果运行ldd文件，其中文件，shell扩展后，是现有文件的路径名 ，然后ldd将显示动态依赖该文件的 ，通过动态链接器发现了它通常依赖于 目前的ldconfig配置及其通常的操作方式 LD_LIBRARY_PATH环境设置。它不会搜索您的系统 中的文件，该文件可能是文件的备用候选文件，该文件不存在 并显示这些候选文件的动态相关性。