[hoc-devel] configure options patch

[Daniel R. <da...@ph...>]

Greetings,

Here is a patch to add the three configure options:

--with-ffi-sources
--with-ffi
--with-dynamic-haskell

--with-ffi-sources lets you specify the location of your libffi source  
directory.

--with-ffi lets you specify the prefix into which libffi is installed.

--with-dynamic-haskell lets you specify the HocBuildDylibs flag I saw  
in a few places in the make file.

Right now building with the system libffi is broken for reasons I  
don't quite understand.  Partially, it's because the static objects do  
not play nice with a dynamically linked libffi.  The defaults will  
find libffi-src and failing that, look for a system libffi.   
Unfortunately, building with HocBuildDylibs /also/ doesn't work.  I'm  
not sure why either.  I just saw that someone putting the flag there  
in the makefile, so I exposed it to ./configure

Having --with-ffi-sources is quite useful, and hopefully, having the  
two build options available in the configure script will encourage me  
(or someone else) to fix them.

-- 
Daniel