[Fontconfig] pre-creating font caches in a different tree

[Mike Frysinger]

On Tuesday 04 October 2011 22:36:08 Behdad Esfahbod wrote:
> On 10/04/11 14:45, Mike Frysinger wrote:
> > i'd like to run fc-cache against a different tree than "/".  a lot of
> > utils have a "--root" flag for this sort of thing.  this is useful for
> > distros which are preparing packages for installation.  it avoids having
> > to run fc-cache on every system that deploys the fonts.
> > 
> > so if i ran `fc-cache -s --root /a/b/c`, it would look at
> > /a/b/c/etc/fonts/ instead of /etc/fonts/.  then every dir that those
> > config files said to use would transparently be prefixed with /a/b/c. 
> > so if my config said <dir>/usr/share/fonts</dir> and
> > <cachedir>/var/cache/fontconfig</cachedir>, it would instead scan
> > /a/b/c/usr/share/fonts and store the cache in
> > /a/b/c/var/cache/fontconfig.
> > 
> > how hard do people envision this being ?
> 
> Why can't you just do "chroot /a/b/c fc-cache -s"?

not everyone has that access.  building as root is a bad idea.

long term, i want to do this for cross-compiling, and obviously chroot won't 
work either (ignoring workarounds involving qemu).
-mike
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