linux库问题 [英] linux library problem

问题描述

每个人都在那里，
我正在编写一个c代码，当我编译它时有一个奇怪的问题。
源代码正常。
我使用以下选项进行编译：

  $ gcc above_sample.c -I / home / hadoop / project / hadoop -0.20.2 / src / c ++ / libhdfs -L / home / hadoop / project / hadoop-0.20.2 / c ++ / Linux-amd64-64 / lib -lhdfs -o above_sample。 
  

但是它显示出这样的结果：

  / usr / bin / ld：warning：libjvm.so，需要/home/hadoop/project/hadoop-0.20.2/c++/Linux-amd64-64/lib/ libhdfs.so，未找到（尝试使用-rpath或-rpath-link）/home/hadoop/project/hadoop-0.20.2/c++/Linux-amd64-64/lib/libhdfs.so：对JNI_CreateJavaVM @ SUNWprivate_1.1'
 /home/hadoop/project/hadoop-0.20.2/c++/Linux-amd64-64/lib/libhdfs.so：对JNI_GetCreatedJavaVMs@SUNWprivate_1.1的未定义引用
 collect2 ：ld返回1退出状态
  

我搜索了libjvm.so我发现它在我的系统中位于/ usr / java / lib。

我做了一个符号链接，但没有成功。

我复制了库到像usr / lib这样的几个地方检查LD_library_Path
，但无法管理编译程序，它一次又一次地显示相同的错误

任何一个告诉我我做错了什么？
如何将.so文件链接到gcc？
或如何将.so文件链接到程序中？

解决方案

尝试添加：

  -L / usr / java / lib 
  

到链接器命令，因为这是链接器无法找到的库： I_GetCreatedJavaVMs@SUNWprivate_1.1 。

有一点建议：把 LD_LIBRARY_PATH 混淆不是个好主意。只需修复您的链接器命令。

Everybody out there, I'm writing a c code which have a strange problem when I compile it . The source code is OK. I compile it with following option:

$ gcc above_sample.c -I/home/hadoop/project/hadoop-0.20.2/src/c++/libhdfs -L/home/hadoop/project/hadoop-0.20.2/c++/Linux-amd64-64/lib -lhdfs  -o above_sample.

But it show the out put like that:

/usr/bin/ld: warning: libjvm.so, needed by /home/hadoop/project/hadoop-0.20.2/c++/Linux-amd64-64/lib/libhdfs.so, not found (try using -rpath or -rpath-link) /home/hadoop/project/hadoop-0.20.2/c++/Linux-amd64-64/lib/libhdfs.so: undefined reference to `JNI_CreateJavaVM@SUNWprivate_1.1' 
/home/hadoop/project/hadoop-0.20.2/c++/Linux-amd64-64/lib/libhdfs.so: undefined reference to `JNI_GetCreatedJavaVMs@SUNWprivate_1.1'
collect2: ld returned 1 exit status

I searched for libjvm.so i found It in my system in /usr/java/lib.

I made a symbolic link of it but did not work.

i copied the library in to several places like usr/lib check the LD_library_Path but could not manage to compile the program it showing the same error again and again

Can any one tell me what I'm doing wrong ? how to link .so file to gcc ? or how .so files are linked in program?

解决方案

Try adding:

-L/usr/java/lib

To your linker command, since that's the library your linker is not being able to find: I_GetCreatedJavaVMs@SUNWprivate_1.1.

A little piece of advice: it's not a good idea to mess with LD_LIBRARY_PATH. Just fix your linker command.

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