Remove duplication in Makefile

Makefile

@@ -68,7 +68,21 @@ INCS:= -I$(INCLUDE) -I$(SRC) -I$(RES) -I$(INCLUDE_LIB) -I$(RES_LIB)
 DEFAULT_FLAGS= $(EXTRA_FLAGS) -DSGDK_GCC -m68000 -Wall -Wextra -Wno-shift-negative-value -Wno-main -Wno-unused-parameter -fno-builtin -fms-extensions $(INCS) -B$(BIN)
 FLAGSZ80:= -i$(SRC) -i$(INCLUDE) -i$(RES) -i$(SRC_LIB) -i$(INCLUDE_LIB) -i$(INCLUDE_LIB)/snd
 
-release: FLAGS= $(DEFAULT_FLAGS) -O3 -fuse-linker-plugin -fno-web -fno-gcse -fno-unit-at-a-time -fomit-frame-pointer -flto
+EXTRA_FLAGS:=-DBUILD='"$(BUILD)"' \
+	-Wl,--wrap=SYS_enableInts \
+	-Wl,--wrap=SYS_disableInts \
+	-Werror \
+	-Wextra
+
+ifeq ($(ROM_TYPE), MEGAWIFI)
+	EXTRA_FLAGS += -DMEGAWIFI
+	LTO_FLAGS:=
+else
+	LTO_FLAGS:=-flto
+endif
+
+release: FLAGS= $(DEFAULT_FLAGS) -O3 -fuse-linker-plugin -fno-web -fno-gcse \
+	-fno-unit-at-a-time -fomit-frame-pointer $(LTO_FLAGS)
 release: CFLAGS= $(FLAGS)
 release: AFLAGS= $(FLAGS)
 release: LIBMD= $(LIB)/libmd.a
@@ -116,7 +130,8 @@ cleanobj:
 	$(RM) -f $(OBJS) out/sega.o out/rom_head.bin out/rom_head.o out/rom.out
 
 clean: cleanobj cleanres cleanlst cleandep
-	$(RM) -f out.lst out/cmd_ out/symbol.txt out/rom.nm out/rom.wch out/rom.bin
+	$(RM) -f out.lst out/symbol.txt out/rom.nm out/rom.wch out/rom.bin out/rom.s
+	$(MAKE) -C tests clean-target
 
 cleanrelease: clean
 
@@ -132,22 +147,18 @@ cleanDebug: cleandebug
 cleanAsm: cleanasm
 
 pre-build:
-	$(MKDIR) -p $(SRC)/boot
-	$(MKDIR) -p out
+	@$(MKDIR) -p $(SRC)/boot
+	@$(MKDIR) -p out
 
 out/rom.bin: out/rom.out
 	$(OBJCPY) -O binary out/rom.out out/rom.bin
-	$(SIZEBND) out/rom.bin -sizealign 131072 -checksum
+	$(SIZEBND) out/rom.bin -sizealign 524288 -checksum
 
 out/symbol.txt: out/rom.out
 	$(NM) $(LTO_PLUGIN) -n out/rom.out > out/symbol.txt
 
-out/rom.out: out/sega.o out/cmd_ $(LIBMD)
-	$(CC) -m68000 -B$(BIN) -n -T $(GDK)/md.ld -nostdlib out/sega.o @out/cmd_ $(LIBMD) $(LIBGCC) -o out/rom.out -Wl,--gc-sections -flto
-	$(RM) out/cmd_
-
-out/cmd_: $(OBJS)
-	$(ECHO) "$(OBJS)" > out/cmd_
+out/rom.out: out/sega.o $(OBJS) $(LIBMD)
+	$(CC) -m68000 -B$(BIN) -n -T $(GDK)/md.ld -nostdlib out/sega.o $(OBJS) $(LIBMD) $(LIBGCC) -o out/rom.out -Wl,--gc-sections -flto
 
 out/sega.o: $(SRC)/boot/sega.s out/rom_head.bin
 	$(CC) -x assembler-with-cpp -Wa,--register-prefix-optional,--bitwise-or $(AFLAGS) -c $(SRC)/boot/sega.s -o $@
@@ -194,44 +205,12 @@ out/%.o: %.rs
 %.s: %.o80
 	$(BINTOS) $<
 
-EXTRA_FLAGS:=-DBUILD='"$(BUILD)"' \
-	-Wl,--wrap=SYS_enableInts \
-	-Wl,--wrap=SYS_disableInts \
-	-Werror \
-	-Wextra
-
-ifeq ($(ROM_TYPE), MEGAWIFI)
-	EXTRA_FLAGS += -DMEGAWIFI
-	LTO_FLAGS:=
-else
-	LTO_FLAGS:=-flto
-endif
-
 res/samples:
 	wget "https://github.com/rhargreaves/mega-drive-pcm-samples/releases/download/v1/samples.zip" \
 		-O temp.zip
 	unzip temp.zip -d res/samples
 	rm temp.zip
 
-debug: FLAGS= $(DEFAULT_FLAGS) -O1 -DDEBUG=1
-debug: CFLAGS= $(FLAGS) -ggdb
-debug: AFLAGS= $(FLAGS)
-debug: LIBMD= $(LIB)/libmd_debug.a
-debug: pre-build out/rom.bin out/rom.out out/symbol.txt
-
-release: FLAGS= $(DEFAULT_FLAGS) -O3 -fuse-linker-plugin -fno-web -fno-gcse \
-	-fno-unit-at-a-time -fomit-frame-pointer $(LTO_FLAGS)
-release: LIBMD= $(LIB)/libmd.a
-release: pre-build out/rom.bin out/symbol.txt
-
-clean: cleanobj cleanres cleanlst cleandep
-	$(RM) -f out.lst out/cmd_ out/symbol.txt out/rom.nm out/rom.wch out/rom.bin out/rom.s
-	$(MAKE) -C tests clean-target
-
-out/rom.bin: out/rom.out
-	$(OBJCPY) -O binary out/rom.out out/rom.bin
-	$(SIZEBND) out/rom.bin -sizealign 524288 -checksum
-
 out/rom.s: out/rom.out
 	m68k-elf-objdump -D -S $^ > $@