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-rw-r--r--rules/clean-target.mk12
1 files changed, 12 insertions, 0 deletions
diff --git a/rules/clean-target.mk b/rules/clean-target.mk
index 12c7528573..bc9e2da5f6 100644
--- a/rules/clean-target.mk
+++ b/rules/clean-target.mk
@@ -1,3 +1,15 @@
+# -----------------------------------------------------------------------------
+#
+# (c) 2009 The University of Glasgow
+#
+# This file is part of the GHC build system.
+#
+# To understand how the build system works and how to modify it, see
+# http://hackage.haskell.org/trac/ghc/wiki/Building/Architecture
+# http://hackage.haskell.org/trac/ghc/wiki/Building/Modifying
+#
+# -----------------------------------------------------------------------------
+
define clean-target # args: $1 = dir, $2 = key, $3 = files/dirs to clean
clean : clean_$1