-# 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)
+## Optional tools for building documentation, website, extra fonts.
+if test "$DOCUMENTATION" = "yes"; then
+ DOCUMENTATION_REQUIRED=REQUIRED
+else
+ DOCUMENTATION_REQUIRED=OPTIONAL
+fi
+
+STEPMAKE_PATH_PROG(GHOSTSCRIPT, gs, $DOCUMENTATION_REQUIRED, 8.60)
+
+STEPMAKE_PROGS(MAKEINFO, makeinfo, REQUIRED, 4.11)
+STEPMAKE_PROGS(TEXI2HTML, texi2html, $DOCUMENTATION_REQUIRED, 1.82)
+STEPMAKE_PROGS(DBLATEX, dblatex, $DOCUMENTATION_REQUIRED, 0.1.4)
+STEPMAKE_PROGS(BIBTEX, bibtex, $DOCUMENTATION_REQUIRED)
+STEPMAKE_PROGS(PDFLATEX, pdflatex, $DOCUMENTATION_REQUIRED)
+STEPMAKE_PROGS(PDFTEX, pdfetex pdftex etex, $DOCUMENTATION_REQUIRED)
+STEPMAKE_PROGS(TEXI2PDF, texi2pdf, $DOCUMENTATION_REQUIRED)
+STEPMAKE_PROGS(TEXINDEX, texindex, $DOCUMENTATION_REQUIRED)
+AC_MSG_CHECKING(for epsf.tex)
+TEX_EPSF=`kpsewhich tex epsf`
+if test "$TEX_EPSF" = ""; then
+ AC_MSG_RESULT(not found)
+ STEPMAKE_ADD_ENTRY($DOCUMENTATION_REQUIRED,epsf.tex)
+else
+ AC_MSG_RESULT($TEX_EPSF)
+fi
+STEPMAKE_PROGS(NETPBM, pngtopnm, $DOCUMENTATION_REQUIRED)
+STEPMAKE_PROGS(IMAGEMAGICK, convert, $DOCUMENTATION_REQUIRED)
+# this name avoids a conflict with ZIP in stepmake/aclocal.m4
+STEPMAKE_PROGS(ZIPDOC, zip, $DOCUMENTATION_REQUIRED)
+STEPMAKE_PROGS(RSYNC, rsync, $DOCUMENTATION_REQUIRED)