Re: [Caml-list] Problems with Godi and Expat under Lucid Lynx

[Gerd Stolpmann <info@gerd-stolpmann.de>]

Am Donnerstag, den 01.07.2010, 11:34 +0200 schrieb Till Crueger:
> Hi,
> 
> I am trying to rebuild ocaml-expat in Godi after upgrading to Lucid Lynx  
> and have encountered some problems. The build process in the Godi console  
> fails with the message:
> 
> > ===> expat not found
> >      Consider adding GODI_BASEPKG_EXPAT=yes to godi.conf
> > Error: Exec error: File  
> > /opt/godi/build/conf/conf-expat/./../../mk/bsd.pkg.mk, line 1022:  
> > Command returned with non-zero exit code
> 
> I hade some look at the problem and found the following. The configure  
> script from godi is trying to compile a small c-program to test for the  
> existing of libexpat. The program compiles fine and even runs, when I  
> execute it directly. However the directories do not match the patterns  
> desired by the configure script.
> 
> All development files are laid out in the following way under Lucid Lynx:
> 
> Headers of expat in:
> /usr/lib/expat.h
> 
> Libraries:
> /lib/libexpat.so.1.5.2
> /lib/libexpat.so.1 -> /lib/libexpat.so.1.5.2
> /usr/lib/libexpat.a
> /usr/lib/libexpat.so -> /lib/libexpat.so.1.5.2
> 
> running ldd on the binary tells me, that the libexpat.so.1 from the  
> directory /lib is used in this program. The script however expects the  
> libdir to be /usr/lib (which would work with one of the links). Because of  
> this mismatche it keeps on trying other directories and eventually fails.

Well, maybe it should also look into /lib when it finds the .h
in /usr/include.

> Any ideas on how to work around this in a simple way? Right now my  
> solution will probably be to install an aditional copy of libexpat under  
> /opt and use that one for ocaml. However I don't really want to keep  
> duplicate packages around all the time, just to make it work.

Just configure it manually:

For the package conf-expat set the variables:

GODI_EXPAT_INCDIR = /usr/include
GODI_EXPAT_LIBDIR = /lib

(type 'c' to set this after going to the conf-expat package).

Gerd

> 
> 
> On the other hand I am not really happy with the way the expat binding  
> works in Ocaml, so I might just switch to another XML parser for my code  
> soon. Any good suggestions for a simple to use XML parser library for  
> OCaml?
> 
> Thanks,
>    Till
> 
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