-# New makeinfo for multi-page website docs Simply always require new
-# makeinfo should avoid bug reports; if people want to build lily
-# without the docs, they can find this comment and use an older
-# makeinfo--but hopefully won't report makeinfo problems.
-STEPMAKE_PROGS(MAKEINFO, makeinfo, REQUIRED, 4.8)
+STEPMAKE_PROGS(MAKEINFO, makeinfo, REQUIRED, 4.11)
+STEPMAKE_PROGS(TEXI2HTML, texi2html, OPTIONAL, 1.82)
+STEPMAKE_PROGS(DBLATEX, dblatex, OPTIONAL)
+STEPMAKE_PROGS(PDFLATEX, pdflatex, OPTIONAL)
+STEPMAKE_PROGS(NETPBM, pngtopnm, OPTIONAL)
+STEPMAKE_PROGS(IMAGEMAGICK, convert, OPTIONAL)
+# this name avoids a conflict with ZIP in stepmake/aclocal.m4
+STEPMAKE_PROGS(ZIPDOC, zip, OPTIONAL)
+STEPMAKE_PROGS(RSYNC, rsync, OPTIONAL)