From 94078f750a629bb82b0ce649eb8058054cec58fe Mon Sep 17 00:00:00 2001
From: Brian Anderson <banderson@mozilla.com>
Date: Fri, 14 Mar 2014 18:06:37 -0700
Subject: [PATCH] mk: Clean libbacktrace w/ gusto
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After `make clean' I'm seeing the build break with

```
cp: cannot stat ‘x86_64-unknown-linux-gnu/rt/libbacktrace/.libs/libbacktrace.a’: No such file or directory
```

Deleteing the libbacktrace dir entirely on clean fixes.
---
 mk/clean.mk | 1 +
 1 file changed, 1 insertion(+)

diff --git a/mk/clean.mk b/mk/clean.mk
index 73813a4b751..34fd4d06fe5 100644
--- a/mk/clean.mk
+++ b/mk/clean.mk
@@ -78,6 +78,7 @@ define CLEAN_HOST_STAGE_N
 clean$(1)_H_$(2):							    \
 	    $$(foreach crate,$$(CRATES),clean$(1)_H_$(2)-lib-$$(crate))	    \
 	    $$(foreach tool,$$(TOOLS),clean$(1)_H_$(2)-tool-$$(tool))
+	$$(Q)rm -fr $(2)/rt/libbacktrace
 
 clean$(1)_H_$(2)-tool-%:
 	$$(Q)rm -f $$(HBIN$(1)_H_$(2))/$$*$$(X_$(2))