From 2d0bc7ef0d9ede851b409d7c958a4edfc60c671d Mon Sep 17 00:00:00 2001
From: David Given <dg@cowlark.com>
Date: Sun, 20 Nov 2016 18:57:44 +0100
Subject: [PATCH] Finally fix the build system issue where ackprogram would try
 to explicitly link all the language libraries.

---
 plat/build.lua | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/plat/build.lua b/plat/build.lua
index a6774b920..85ba61bc9 100644
--- a/plat/build.lua
+++ b/plat/build.lua
@@ -62,11 +62,23 @@ definerule("ackprogram",
 		deps = { type="targets", default={} },
 	},
 	function (e)
+		-- This bit is a hack. We *don't* want to link the language libraries here,
+		-- because the ack driver is going to pick the appropriate library itself and
+		-- we don't want more than one. But we still need to depend on them, so we use
+		-- a nasty hack.
+
+		local platstamp = normalrule {
+			name = e.name.."/platstamp",
+			ins = { "plat/"..e.vars.plat.."+pkg" },
+			outleaves = { "stamp" },
+			commands = { "touch %{outs}" }
+		}
+
 		return cprogram {
 			name = e.name,
 			srcs = e.srcs,
 			deps = {
-				"plat/"..e.vars.plat.."+pkg",
+				platstamp,
 				"util/ack+pkg",
 				"util/led+pkg",
 				e.deps
-- 
2.34.1