From f83994ec376625591ce33861354030f3d7eb71f3 Mon Sep 17 00:00:00 2001
From: Ian Lynagh <ian@well-typed.com>
Date: Sat, 1 Jun 2013 19:16:56 +0100
Subject: Add a comment

---
 rules/build-dependencies.mk | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'rules')

diff --git a/rules/build-dependencies.mk b/rules/build-dependencies.mk
index 02640bf1ab..12334260b1 100644
--- a/rules/build-dependencies.mk
+++ b/rules/build-dependencies.mk
@@ -49,6 +49,10 @@ endif
 #    within the build tree. On Windows this causes a problem as they look
 #    like bad rules, due to the two colons, so we filter them out.
 	grep -v ' : [a-zA-Z]:/' $$@.tmp > $$@.tmp2
+# Insert the calls to hi-rule. Basically, we look for the
+#     Foo.dyn_o Foo.o : Foo.hs
+# lines, and create corresponding hi-rule lines
+#     $(eval $(call hi-rule,Foo.dyn_hi Foo.hi : %hi: %o Foo.hs))
 	sed '/hs$$$$/ p                                      ; \
 	     /hs$$$$/ s/o /hi /g                             ; \
 	     /hs$$$$/ s/:/ : %hi: %o /                       ; \
-- 
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