Re: Unicode support in poke

[Bruno Haible]

Hi Tim,

> you could look at libidn2 as an example how to use system libunistring
> if there (or if new enough) and fallback to gnulib unistring.
> (BTW, libunistring is made of the gnulib unistring modules)
> 
> It creates a separate dir / library for gnulib unistring functions,
> *BUT* only uses it when a system libunistring can't be found.
> 
> bootstrap.conf: Call gnulib-tool in bootstrap_post_import_hook() only
> for the needed unistring modules.
> 
> configure.ac: Check for system libunistring (set a conditional
> HAVE_LIBUNISTRING
> 
> Makefile.am: if !HAVE_LIBUNISTRING -> add unistring/ to SUBDIR
> 
> */Makefile.am: if !HAVE_LIBUNISTRING -> add unistring/ to includes in
> AM_CPPFLAGS

A simpler way to achieve the same thing is to include the gnulib module
'libunistring-optional'. It will use the system libunistring if it
exists and is new enough, and otherwise compile the respective modules
from source.

Bruno