From 017ff08d6107e3b8a3c0f777d6610bc11d8b1278 Mon Sep 17 00:00:00 2001
From: Alexey Neyman <stilor@att.net>
Date: Tue, 19 Apr 2016 23:16:23 -0700
Subject: build-all: Remove successful build trees.

I am running out of space when running build-all for all samples.

Signed-off-by: Alexey Neyman <stilor@att.net>

diff --git a/samples/samples.mk b/samples/samples.mk
index 643e595..bf51135 100644
--- a/samples/samples.mk
+++ b/samples/samples.mk
@@ -186,6 +186,7 @@ $(CT_SAMPLES): config_files
 __comma = ,
 prefix_dir = $(CT_PREFIX)/$(subst $(__comma),=,$(1))
 host_triplet = $(if $(findstring $(__comma),$(1)),$(firstword $(subst $(__comma), ,$(1))))
+target_triplet = $(if $(findstring $(__comma),$(1)),$(word 2,$(subst $(__comma), ,$(1))),$(1))
 
 # Create the rule to build a sample
 # $1: sample name (target tuple, or host/target tuples separated by a comma)
@@ -212,7 +213,8 @@ define build_sample
 	fi; \
 	printf '\r  %-5s %s\n' $$status '$(1)'; \
 	mkdir -p .build-all/$$status/$(1); \
-	bzip2 < build.log > .build-all/$$status/$(1)/build.log.bz2
+	bzip2 < build.log > .build-all/$$status/$(1)/build.log.bz2; \
+	[ "$$status" = PASS -a -z "$(CT_PRESERVE_PASSED_BUILDS)" ] && rm -rf .build/$(call target_triplet,$(1)) || :
 endef
 
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