[Ocfs2-tools-devel] Why not link libdlm_lt directly ?

[Coly Li]

Hi,

These days when I work on BNC#543119 (https://bugzilla.novell.com/show_bug.cgi?id=543119), which is an issue when
loading libdlm_lt from libo2dlm.

In current libo2dlm code, if HAVE_FSDLM is defined, dlopen() is called to open "libdlm_lt.so". libdlm_lt.so is included
in libdlm-devel package, in libdlm2 package just libdlm_lt.so.3 included. Therefore when the system only installed
libdlm2 without libdlm-devel, dlopen() to "libdlm_lt.so" gets failed. The result is, all tools accessing cluster lock
will display an error "Unable to access cluster service ..."

The fast and easy fix is just add libdlm-devel installation dependence to ocfs2-tools package, but IMHO it's kind of
work around.

Once thing I don't understand is, why libdlm_lt is not linked directly to libo2dlm when HAVE_FSDLM is defined ? Current
code loads the library in run time and rename the symbols to fsdlm_xxxxx, it's a little bit complex than just including
libdlm.h and linking libdlm_lt in build time.

Thanks in advance.
-- 
Coly Li
SuSE Labs