[Bug 1002672] Re: apps can't be linked against libdl in 12.04

[Jason Conti]

You need to specify the libraries after the code that reference them. So
the correct method is:

gcc -o dltest dltest.o -ldl

The command line above would work anyways prior to oneiric, but from
oneiric onward the linker is more strict. See
http://wiki.debian.org/ToolChain/DSOLinking

Marking as invalid.

** Changed in: eglibc (Ubuntu)
       Status: New => Invalid

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https://bugs.launchpad.net/bugs/1002672

Title:
  apps can't be linked against libdl in 12.04

Status in “eglibc” package in Ubuntu:
  Invalid

Bug description:
  An example program:

  ===
  #include <stdio.h>
  #include <dlfcn.h>

  main()
  {
  	dlopen("/lib/example.so", RTLD_NOW);

  }
  ===

  and its compilation gives:

  ===
  lvd at ubuserv1204:~/tmp/dltest$ gcc -c dltest.c 
  lvd at ubuserv1204:~/tmp/dltest$ gcc -ldl -o dltest dltest.o
  dltest.o: In function `main':
  dltest.c:(.text+0xf): undefined reference to `dlopen'
  collect2: ld returned 1 exit status
  ===

  This bug exists in i386, pure amd64 and in multilib (both with -m32
  option to gcc and without).

  Please ask me for additional info.

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