+AC_CHECK_FUNCS([gettext isinf memmem snprintf vsnprintf gettext])
+
+
+## Optional tools for building documentation, website, extra fonts.
+
+# guile executable for some scripts
+STEPMAKE_GUILE(OPTIONAL)
+# perl for help2man.
+STEPMAKE_PERL(OPTIONAL)
+# mftrace for generating pfa's, pfb's
+STEPMAKE_PROGS(MFTRACE, mftrace, OPTIONAL, 1.0.17)
+
+# new makeinfo for multi-page website docs
+STEPMAKE_PROGS(MAKEINFO, makeinfo, OPTIONAL, 4.6)
+
+
+if test "$optimise_b" = yes; then
+ DEFINES="$DEFINES -DSTRING_UTILS_INLINED"
+ AC_DEFINE(STRINGS_UTILS_INLINED)
+fi
+