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)
+
AC_DEFINE_UNQUOTED(FLOWER_VERSION, "${FULL_FLOWER_VERSION}")