if not yacc or bison is found, check if we *really* need it, and if we do

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