[Gllug] pimping my elf

[Daniel P. Berrange]

On Wed, Jun 14, 2006 at 02:37:31PM +0100, Alex Sayle wrote:
> Firstly I must explain how our environment works, we use a lot of FOSS
> libraries and for the sake of backwards compatibility we keep them in
> their own little sub namespace and link or install them into a central
> location for the ease of our use.
> 
> it looks a bit like <somepath>/bar/<version>/{lib,include,share} so
> we can have multiple libbar's co-existing.
> 
> For simplicity we then take bar/<version>/lib/libbar.so.<version> and
> install into a central LIB directory. For some historic reason when
> we do this the libraries are renamed to libbar-<version>.so.
> 
> this name change can be an issue and rather than going against the grain
> I'd like to get it working as is. So, here's the question, does anyone
> know a non hexedit or binary sed hackery way to change link targets  
> in a an elf binary.
> 
> In essence I want to change
> 
> $readelf -d foo.so  | head -n 3
> Dynamic segment at offset 0x36c0 contains 37 entries:
>   Tag        Type                         Name/Value
> 0x00000001 (NEEDED)                     Shared library: [libbar.so.4.2]
> 
> to
> 
> 0x00000001 (NEEDED)                     Shared library: [libbar-4.2.so]
> 
> with out re-linking the whole thing.

I assumed you've already tried the simple symlink  "libbar-4.2.so" => 
"libbar.so.4.2", or vica-versa ?   Since everything is versioned you
shouldn't get any file name clashes by having both filename schemes 
present in your central LIB dir ?

Dan.
-- 
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|=-   berrange at redhat.com  -  Daniel Berrange  -  dan at berrange.com    -=|
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