-# Rewrite if ! ... construts produced by gnulib conditional dependencies
-# as these fail in heirloom-sh.
-sed 's/if ! *\(.*gnulib_enabled[^;]*\); then/if \1; then :; else/' \
- m4/gnulib-comp.m4 >m4/gnulib-comp.m4.new || exit
-mv -f m4/gnulib-comp.m4.new m4/gnulib-comp.m4 || exit
-