CPPFLAGS for LIBOBJS

[Russ Allbery]

Today I ran into a need to set CPPFLAGS when building files for LIBOBJS
and discovered that there doesn't appear to be any way to do it without
setting CPPFLAGS globally.

I have:

portable_libportable_a_LIBADD = $(LIBOBJS)

If I add:

portable_libportable_a_CPPFLAGS = $(KRB5_LDFLAGS) $(KAFS_LDFLAGS)

it has no effect, which after thinking about it for a moment makes some
sense.  However, setting LIBOBJS_CPPFLAGS doesn't do anything either.

Could some facility to handle this be added?

-- 
Russ Allbery (address@hidden)             <http://www.eyrie.org/~eagle/>