From 03a44d2ee839735dd44102c5c93b68ebc93b5d50 Mon Sep 17 00:00:00 2001
From: Tavian Barnes <tavianator@tavianator.com>
Date: Sat, 19 Dec 2020 09:56:15 -0500
Subject: Makefile: Fix behaviour if .flags doesn't exist yet

---
 Makefile | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index cdbf664..832586a 100644
--- a/Makefile
+++ b/Makefile
@@ -169,6 +169,10 @@ $(BIN_GOALS):
 %.o: %.c .flags
 	$(CC) $(ALL_CFLAGS) -c $< -o $@
 
+# Need a rule for .flags to convince make to apply the above pattern rule if
+# .flags didn't exist when make was run
+.flags:
+
 # Make sure that "make release" builds everything, but "make release main.o" doesn't
 $(FLAG_GOALS): $(FLAG_PREREQS)
 	@:
@@ -193,7 +197,7 @@ endif
 	+$(MAKE) -B check $(DISTCHECK_FLAGS)
 
 clean:
-	$(RM) $(BIN_GOALS) *.[od] *.gcda *.gcno tests/*.[od] tests/*.gcda tests/*.gcno
+	$(RM) $(BIN_GOALS) .flags *.[od] *.gcda *.gcno tests/*.[od] tests/*.gcda tests/*.gcno
 
 install:
 	$(MKDIR) $(DESTDIR)$(PREFIX)/bin
@@ -207,4 +211,6 @@ uninstall:
 
 .PHONY: default all $(FLAG_GOALS) check $(CHECKS) distcheck clean install uninstall
 
+.SUFFIXES:
+
 -include $(wildcard *.d)
-- 
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