From 502f1bffc4a2b4cc6358770a563b03af7dc7f8b1 Mon Sep 17 00:00:00 2001
From: Patrick McDermott <patrick.mcdermott@libiquity.com>
Date: Tue, 16 Mar 2021 05:36:14 -0400
Subject: build: Copy game data to build dir if out-of-tree

---
diff --git a/Makefile.am b/Makefile.am
index afe61ab..70c1db1 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -61,7 +61,7 @@ dodge_balls_LDADD = \
 	$(ZLIB_LIBS) \
 	$(EXPAT_LIBS)
 dodge_balls_LINK = $(LINK) version.c
-EXTRA_dodge_balls_DEPENDENCIES = version.c
+EXTRA_dodge_balls_DEPENDENCIES = version.c $(DATA)
 CLEANFILES = version.c
 EXTRA_DIST = autogen.sh
 
diff --git a/games/classic/local.mk b/games/classic/local.mk
index 6ed0233..ee679fb 100644
--- a/games/classic/local.mk
+++ b/games/classic/local.mk
@@ -20,3 +20,11 @@ dist_noinst_DATA = \
 
 nodist_games_classic_DATA = \
 	%reldir%/tileset.png
+
+# To run in place, the engine needs game data in the build directory, which may
+# be different from the source directory.
+$(dist_games_classic_DATA) $(dist_noinst_DATA): %reldir%/$(am__dirstamp)
+	$(AM_V_GEN)[ x"$(srcdir)" = x"$(builddir)" ] || cp "$(srcdir)/$@" "$@"
+%reldir%/$(am__dirstamp):
+	@$(MKDIR_P) %reldir%
+	@: > %reldir%/$(am__dirstamp)
--
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