From c8746a3651c905b56aaba5b5f94492588542a79e Mon Sep 17 00:00:00 2001
From: Mark Wooding <mdw@distorted.org.uk>
Date: Mon, 14 Mar 2022 17:57:02 +0000
Subject: [PATCH] Makefile: Add rules for saving output references.

---
 Makefile | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/Makefile b/Makefile
index 8cfecb5..257b254 100644
--- a/Makefile
+++ b/Makefile
@@ -159,3 +159,24 @@ $(LINKS): link/%:
 			ln -frs $*.m3u8 "$$t.new" && mv "$$t.new" "$$t" ;; \
 		esac
 .PHONY: link $(LINKS)
+
+SAVE			 = $(foreach p,$(PLAYLISTS), save/$p)
+FORCE_SAVE		 = $(foreach p,$(PLAYLISTS), force-save/$p)
+save: $(SAVE)
+force-save: $(FORCE_SAVE)
+$(SAVE): save/%: %.m3u8
+	$(V_AT) \
+		ok=nil; \
+		if ! [ -f "ref/$*.m3u8" ]; then \
+		  $(call v-print,SAVE,$*); \
+		  cp $< ref/$*.m3u8.new && mv ref/$*.m3u8.new ref/$*.m3u8; \
+		fi
+.PHONY: save $(SAVE)
+$(FORCE_SAVE): force-save/%: %.m3u8
+	$(V_AT) \
+		ok=nil; \
+		if ! [ -f "ref/$*.m3u8" ] || ! cmp -s $< ref/$*.m3u8; then \
+		  $(call v-print,SAVE,$*); \
+		  cp $< ref/$*.m3u8.new && mv ref/$*.m3u8.new ref/$*.m3u8; \
+		fi
+.PHONY: save $(SAVE)
-- 
2.11.0