> [ ... ] Ping. Are you considering my opinions OK?
Quickly again (let's say that AC_CONFIG_MACRO_DIR([m4]) is specified): a) Warn because 'aclocal -I m4' wants to search 'm4' dir which does not exist. Ignoring this completely is imo idea; b) Don't fail in that because it breaks autoreconf chain; c) Create the 'm4' directory in by autoreconf which is not necessary - but it silences the warning. (And it "fixes" this problem also, as the automake does not have a reason to fail). Pavel