[Libreoffice] Quoting issue in autogen.sh

Hi!

I'm trying to pass down flags so the configure script finds stuff.
I'm running
        autogen.sh ...someflags... CPPFLAGS="-I/usr/pkg/include  -I/usr/local/include" 
and configure dies with:
        configure: error: unrecognized option: `-I/usr/local/include'

autogen.sh runs its arguments through
requote_args ()
{
    sed -e 's/.*configure //' -e 's/=\(\([^"'"'"'-]\|-[^-]\| \)*\)\( \|$\)/="\1" /g'
}

and then runs
        eval `echo ./configure $new_args $old_args`
(old_args are fetched from config.log in case no command line
arguments are given)
This doesn't seem to work.

I understand that requote_args wants to quote the arguments somehow,
but I don't understand how the sed expression is supposed to do that.

Jan, you seem to have added that regex. Perhaps you still know how
this is supposed to work and can fix it?

Cheers,
 Thomas