assures that ensures that always the latest version of these files are used.
(Also all other projects I know do it that way, too.)
libtoolize --copy --force && \
aclocal -I macros $ACLOCAL_FLAGS && \
autoheader && \
- automake --copy --include-deps --add-missing --foreign && \
+ automake --include-deps --add-missing --foreign && \
autoconf
# just in case automake generated errors...