Verify that rgbds is at least verson 0.4.0

Adapt the INSTALL guide from pokecrystal.

1 files changed, 10 insertions, 7 deletions

diff --git a/Makefile b/Makefile
index 684d665e..3e2a6e89 100644
--- a/Makefile
+++ b/Makefile
@@ -38,19 +38,19 @@ all: $(roms)
 red:  pokered.gbc
 blue: pokeblue.gbc
 
-# For contributors to make sure a change didn't affect the contents of the rom.
-compare: $(roms)
-	@$(MD5) roms.md5
-
 clean:
-	rm -f $(roms) $(pokered_obj) $(pokeblue_obj) $(roms:.gbc=.map) $(roms:.gbc=.sym)
+	rm -f $(roms) $(pokered_obj) $(pokeblue_obj) $(roms:.gbc=.map) $(roms:.gbc=.sym) rgbdscheck.o
 	find gfx \( -iname '*.1bpp' -o -iname '*.2bpp' -o -iname '*.pic' \) -delete
 	$(MAKE) clean -C tools/
 
 tidy:
-	rm -f $(roms) $(pokered_obj) $(pokeblue_obj) $(roms:.gbc=.map) $(roms:.gbc=.sym)
+	rm -f $(roms) $(pokered_obj) $(pokeblue_obj) $(roms:.gbc=.map) $(roms:.gbc=.sym) rgbdscheck.o
 	$(MAKE) clean -C tools/
 
+# For contributors to make sure a change didn't affect the original contents of the ROMs.
+compare: $(roms)
+	@$(MD5) roms.md5
+
 tools:
 	$(MAKE) -C tools/
 
@@ -64,11 +64,14 @@ endif
 $(pokered_obj):  RGBASMFLAGS += -D _RED
 $(pokeblue_obj): RGBASMFLAGS += -D _BLUE
 
+rgbdscheck.o: rgbdscheck.asm
+	$(RGBASM) -o $@ $<
+
 # The dep rules have to be explicit or else missing files won't be reported.
 # As a side effect, they're evaluated immediately instead of when the rule is invoked.
 # It doesn't look like $(shell) can be deferred so there might not be a better way.
 define DEP
-$1: $2 $$(shell tools/scan_includes $2)
+$1: $2 $$(shell tools/scan_includes $2) | rgbdscheck.o
 	$$(RGBASM) $$(RGBASMFLAGS) -o $$@ $$<
 endef