About Linking of a simple C++ prog.

[brook_wc]

Hi,
  OK, This time, I tried 
     setenv LD_RUN_PATH /usr/local/lib,
  and recompiled the program(recomplie is must, so I think .so has been linked to the execuatable)
  and Yeah, now it works. When I remove LD_RUN_PATH, it works too.
  And I have a question, Why need I do this? Is there anything wrong with the installation of gcc?


----- Original Message -----
From:pkurpis@keck.hawaii.edu (Peter Kurpis)
To:brook_wc@sina.com
Subject:RE: About Linking of a simple C++ prog.
Date:Fri, 12 Oct 2001 03:13:45 +0800
 >>   I have tried g++ & gcc -lstdc++, it doesn't work either, although 
 >>   the error messages is different as follows:
 >> $PWD$g++ test.cpp
 >> $PWD$./a.out
 >> ld.so.1: ./a.out: fatal: libstdc++.so.2.10.0: open failed: No such file or direc
 >> tory
 >> Killed
 >
 >Your program linked correctly this time, as an executable was created, but
 >your executable can't find libstdc++.so at runtime.  There are a couple of
 >options:
 >
 >	- you can tell the executable where to look  e.g. on Solaris, you
 >	  would set the environment variable 
 >
 >		setenv LD_RUN_PATH <path_to_libstdc++>
 >
 >	- you can recompile, this time hardwiring the runtime search path
 >	  into the executable:
 >
 >		g++ -Wl,-rpath <path_to_libstdc++> test.cpp
 >
 >	  assuming your g++ was configured to use GNU ld
 >	  note that that's an ell, not numeric 'one'
 >
 >

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