AC_PROG_YACC
+if test -z "$YACC"
+then
+ AC_MSG_CHECKING([if OK to build without bison/yacc])
+ dnl no yacc is a big deal if we have no pre-fixed getdate.y
+ if test -r "$srcdir/lib/getdate.c"
+ then
+ dnl all is well, we don't have to generate it!
+ AC_MSG_RESULT(yes)
+ else
+ AC_MSG_RESULT(no)
+ AC_MSG_ERROR([no yacc or bison found, can't build libcurl!])
+ fi
+fi
+
dnl *************************************************************************
dnl If the manual variable still is set, then we go with providing a built-in
dnl manual