-# Track down automake's copy of install-sh
-cp `aclocal --print-ac-dir | sed 's/aclocal$/automake/'`/install-sh unix/.
-(cd unix && autoreconf && rm -rf aclocal.m4 autom4te.cache)
+# It's nice to be able to run this from inside the unix subdir as
+# well as from outside.
+test -f unix.h && cd ..
+
+# Run autoconf on our real configure.in.
+(cd unix && autoreconf -i && rm -rf autom4te.cache)