[mcclim-devel] Re: Announcing McCLIM 0.9.2 "Laetare Sunday"

[Brian Mastenbrook]

On Mar 28, 2006, at 5:34 AM, Michael Livshin wrote:

> Nikodemus Siivola <nikodemus at random-state.net> writes:
>
>> Michael Livshin <gmane at cmm.kakpryg.net> writes:
>>
>>> also, make sure your system has libfreetype.so (some Debian
>>> installations lack it, so you'll have to make a symlink
>>> libfreetype.so -> libfreetype.so.6).
>>
>> Lack of a symlink like that is usually an indication of a missing - 
>> dev
>> package.
>
> oh.  right you are!
>
> still wondering what exactly the logic behind this is,
> --m

The symlink is only necessary if you're going to be linking against  
the library as ld won't resolve -lfreetype to  
libfreetype.so.someversion (and if you're missing the -dev package,  
you don't have headers either). SBCL acts more like a linker than a  
user binary in this case - the SBCL runtime itself is not linked  
against this library, so it must find and load it at runtime.

It would be an interesting project to munge up the runtime when doing  
save-lisp-and-die :executable t to link to any necessary alien  
libraries. One could also put the core in a segment of the binary  
instead of dumping a technically invalid ELF image, too.
--
Brian Mastenbrook
http://brian.mastenbrook.net/
brian at mastenbrook.net