Makefile

# GBA rom header
TITLE       := POKEMON EMER
GAME_CODE   := BPEE
MAKER_CODE  := 01
REVISION    := 0
MODERN      ?= 0
KEEP_TEMPS  ?= 0

# `File name`.gba ('_modern' will be appended to the modern builds)
FILE_NAME := pokeemerald
BUILD_DIR := build

# Web UI opponent build flag — lets an mGBA Lua driver + browser UI control
# the AI opponent's decisions via an EWRAM mailbox. Usage: `make WEBUI_OPPONENT=1`.
WEBUI_OPPONENT ?= 0

# Builds the ROM using a modern compiler
MODERN      ?= 0
# Compares the ROM to a checksum of the original - only makes sense using when non-modern
COMPARE     ?= 0

ifeq (modern,$(MAKECMDGOALS))
  MODERN := 1
endif
ifeq (compare,$(MAKECMDGOALS))
  COMPARE := 1
endif

# Default make rule
all: rom

# Toolchain selection
TOOLCHAIN := $(DEVKITARM)
# don't use dkP's base_tools anymore
# because the redefinition of $(CC) conflicts
# with when we want to use $(CC) to preprocess files
# thus, manually create the variables for the bin
# files, or use arm-none-eabi binaries on the system
# if dkP is not installed on this system
ifneq (,$(TOOLCHAIN))
  ifneq ($(wildcard $(TOOLCHAIN)/bin),)
    export PATH := $(TOOLCHAIN)/bin:$(PATH)
  endif
endif

PREFIX := arm-none-eabi-
OBJCOPY := $(PREFIX)objcopy
OBJDUMP := $(PREFIX)objdump
AS := $(PREFIX)as
LD := $(PREFIX)ld

EXE :=
ifeq ($(OS),Windows_NT)
  EXE := .exe
endif

# use arm-none-eabi-cpp for macOS
# as macOS's default compiler is clang
# and clang's preprocessor will warn on \u
# when preprocessing asm files, expecting a unicode literal
# we can't unconditionally use arm-none-eabi-cpp
# as installations which install binutils-arm-none-eabi
# don't come with it
ifneq ($(MODERN),1)
  ifeq ($(shell uname -s),Darwin)
    CPP := $(PREFIX)cpp
  else
    CPP := $(CC) -E
  endif
else
  CPP := $(PREFIX)cpp
endif

# Output ROM name:
# - Default: uses FILE_NAME (override with e.g. `make FILE_NAME=myhack`)
# - Or override directly: `make ROM_NAME_OVERRIDE=myrom.gba`
ROM_NAME_OVERRIDE ?=
MODERN_ROM_NAME_OVERRIDE ?=

ifneq ($(ROM_NAME_OVERRIDE),)
	ROM_NAME := $(ROM_NAME_OVERRIDE)
else
	ROM_NAME := $(FILE_NAME).gba
endif

ifneq ($(MODERN_ROM_NAME_OVERRIDE),)
	MODERN_ROM_NAME := $(MODERN_ROM_NAME_OVERRIDE)
else
	MODERN_ROM_NAME := $(FILE_NAME)_modern.gba
endif

# Object directories.
ifeq ($(WEBUI_OPPONENT),1)
OBJ_DIR_NAME := $(BUILD_DIR)/emerald_webui
MODERN_OBJ_DIR_NAME := $(BUILD_DIR)/modern_webui
else
OBJ_DIR_NAME := $(BUILD_DIR)/emerald
MODERN_OBJ_DIR_NAME := $(BUILD_DIR)/modern
endif

ELF_NAME := $(ROM_NAME:.gba=.elf)
MAP_NAME := $(ROM_NAME:.gba=.map)
MODERN_ELF_NAME := $(MODERN_ROM_NAME:.gba=.elf)
MODERN_MAP_NAME := $(MODERN_ROM_NAME:.gba=.map)

# Pick our active variables
ifeq ($(MODERN),0)
  ROM := $(ROM_NAME)
  OBJ_DIR := $(OBJ_DIR_NAME)
else
  ROM := $(MODERN_ROM_NAME)
  OBJ_DIR := $(MODERN_OBJ_DIR_NAME)
endif
ELF := $(ROM:.gba=.elf)
MAP := $(ROM:.gba=.map)
SYM := $(ROM:.gba=.sym)

# Commonly used directories
C_SUBDIR = src
ASM_SUBDIR = asm
DATA_SRC_SUBDIR = src/data
DATA_ASM_SUBDIR = data
SONG_SUBDIR = sound/songs
MID_SUBDIR = sound/songs/midi

C_BUILDDIR = $(OBJ_DIR)/$(C_SUBDIR)
ASM_BUILDDIR = $(OBJ_DIR)/$(ASM_SUBDIR)
DATA_ASM_BUILDDIR = $(OBJ_DIR)/$(DATA_ASM_SUBDIR)
SONG_BUILDDIR = $(OBJ_DIR)/$(SONG_SUBDIR)
MID_BUILDDIR = $(OBJ_DIR)/$(MID_SUBDIR)

SHELL := bash -o pipefail

# Set flags for tools
ASFLAGS := -mcpu=arm7tdmi --defsym MODERN=$(MODERN)

INCLUDE_DIRS := include
INCLUDE_CPP_ARGS := $(INCLUDE_DIRS:%=-iquote %)
INCLUDE_SCANINC_ARGS := $(INCLUDE_DIRS:%=-I %)

O_LEVEL ?= 2
CPPFLAGS := $(INCLUDE_CPP_ARGS) -Wno-trigraphs -DMODERN=$(MODERN)

ifeq ($(WEBUI_OPPONENT),1)
  CPPFLAGS += -DWEBUI_OPPONENT
  ifeq ($(COMPARE),1)
    $(error compare is not supported with WEBUI_OPPONENT=1)
  endif
endif

# Optional feature flags (enable with e.g. `make RANDOM_EVOLUTIONS=1`)
RANDOM_EVOLUTIONS ?= 0
ifeq ($(RANDOM_EVOLUTIONS),1)
  CPPFLAGS += -DRANDOM_EVOLUTIONS
endif
HARDCODED_RANDOM_EVOLUTIONS ?= 0
ifeq ($(HARDCODED_RANDOM_EVOLUTIONS),1)
  CPPFLAGS += -DHARDCODED_RANDOM_EVOLUTIONS
endif
# Compile-time toggle: run the evolution scene update loop N times per frame,
# making the evolution animation/cutscene much faster. Usage: make FAST_EVOLUTION_ANIM=1
FAST_EVOLUTION_ANIM ?= 0
ifeq ($(FAST_EVOLUTION_ANIM),1)
  CPPFLAGS += -DFAST_EVOLUTION_ANIM=4
endif
# Compile-time toggle: prevent B from cancelling evolution scenes.
# Usage: make PREVENT_EVOLUTION_CANCEL=1
PREVENT_EVOLUTION_CANCEL ?= 0
ifeq ($(PREVENT_EVOLUTION_CANCEL),1)
  CPPFLAGS += -DPREVENT_EVOLUTION_CANCEL
endif
WALK_FAST ?= 0
ifeq ($(WALK_FAST),1)
  CPPFLAGS += -DWALK_FAST
endif
FAST_SWIM ?= 0
ifeq ($(FAST_SWIM),1)
  CPPFLAGS += -DFAST_SWIM
endif
REPEL_ANY_LEVEL ?= 0
ifeq ($(REPEL_ANY_LEVEL),1)
  CPPFLAGS += -DREPEL_ANY_LEVEL
endif
NO_WILD_ENCOUNTERS ?= 0
ifeq ($(NO_WILD_ENCOUNTERS),1)
  CPPFLAGS += -DNO_WILD_ENCOUNTERS
endif
RELOAD_SAVE_ON_WHITEOUT ?= 0
ifeq ($(RELOAD_SAVE_ON_WHITEOUT),1)
  CPPFLAGS += -DRELOAD_SAVE_ON_WHITEOUT
endif
SKIP_WALLY_CAPTURE_TUTORIAL ?= 0
ifeq ($(SKIP_WALLY_CAPTURE_TUTORIAL),1)
  CPPFLAGS += -DSKIP_WALLY_CAPTURE_TUTORIAL
endif
OPEN_WORLD_MODE ?= 0
ifeq ($(OPEN_WORLD_MODE),1)
  CPPFLAGS += -DOPEN_WORLD_MODE
endif
FREE_HM_MODE ?= 0
ifeq ($(FREE_HM_MODE),1)
  CPPFLAGS += -DFREE_HM_MODE
endif
LEVEL_CAP ?= 0
ifeq ($(LEVEL_CAP),1)
  CPPFLAGS += -DLEVEL_CAP
endif
WALK_THROUGH_WALLS ?= 0
ifeq ($(WALK_THROUGH_WALLS),1)
	CPPFLAGS += -DWALK_THROUGH_WALLS
endif
NUZLOCKE_DELETE_FAINTED ?= 0
ifeq ($(NUZLOCKE_DELETE_FAINTED),1)
	CPPFLAGS += -DNUZLOCKE_DELETE_FAINTED
endif
WAIT_TIME_DIVISOR ?= 1
CPPFLAGS += -DWAIT_TIME_DIVISOR=$(WAIT_TIME_DIVISOR)

# Numeric modifier applied to opponent initial stat stages at battle start.
# Positive values boost; negative values nerf. Clamped to MIN_STAT_STAGE..MAX_STAT_STAGE.
# Usage: make OPPONENT_STAT_STAGE_MOD=1
OPPONENT_STAT_STAGE_MOD ?= 0
CPPFLAGS += -DOPPONENT_STAT_STAGE_MOD=$(OPPONENT_STAT_STAGE_MOD)

# Numeric modifier applied to player's initial stat stages at battle start.
# Positive values boost; negative values nerf. Clamped to MIN_STAT_STAGE..MAX_STAT_STAGE.
# Usage: make PLAYER_STAT_STAGE_MOD=1
PLAYER_STAT_STAGE_MOD ?= 0
CPPFLAGS += -DPLAYER_STAT_STAGE_MOD=$(PLAYER_STAT_STAGE_MOD)

# Which gym leader roster is used for the first badge battle.
# 0 = base team, 1..4 = first through fourth rematch team.
# Usage: make GYM_LEADER_FIRST_ROSTER=4
GYM_LEADER_FIRST_ROSTER ?= 0
CPPFLAGS += -DGYM_LEADER_FIRST_ROSTER=$(GYM_LEADER_FIRST_ROSTER)

# Level of the starter received from Professor Birch. Usage: make STARTER_LEVEL=10
STARTER_LEVEL ?= 5
CPPFLAGS += -DSTARTER_LEVEL=$(STARTER_LEVEL)

INSTANT_TEXT ?= 0
ifeq ($(INSTANT_TEXT),1)
	CPPFLAGS += -DINSTANT_TEXT
endif
FORCE_DOUBLE_BATTLES ?= 0
ifeq ($(FORCE_DOUBLE_BATTLES),1)
	CPPFLAGS += -DFORCE_DOUBLE_BATTLES
endif
STEAL_TRAINER_TEAM ?= 0
ifeq ($(STEAL_TRAINER_TEAM),1)
	CPPFLAGS += -DSTEAL_TRAINER_TEAM
endif
# Compile-time toggle: add the selected trainer Pokemon when the player's
# party has space, while retaining replacement selection for full parties.
# Requires SWAP_TRAINER_POKEMON=1.
ADD_TRAINER_POKEMON_IF_SPACE ?= 0
SWAP_TRAINER_POKEMON ?= 0
ifeq ($(SWAP_TRAINER_POKEMON),1)
	CPPFLAGS += -DSWAP_TRAINER_POKEMON
  ifeq ($(ADD_TRAINER_POKEMON_IF_SPACE),1)
	CPPFLAGS += -DADD_TRAINER_POKEMON_IF_SPACE
  endif
endif

# Compile-time toggle: prevent Pokémon from gaining experience.
# Usage: make NO_EXP=1
NO_EXP ?= 0
ifeq ($(NO_EXP),1)
	CPPFLAGS += -DNO_EXP
endif

# Compile-time toggle: wild Pokémon give no experience (trainer battles still do).
# Usage: make NO_EXP_WILD=1
NO_EXP_WILD ?= 0
ifeq ($(NO_EXP_WILD),1)
	CPPFLAGS += -DNO_EXP_WILD
endif

# Compile-time toggle: trainer Pokémon give no experience (wild battles still do).
# Usage: make NO_EXP_TRAINER=1
NO_EXP_TRAINER ?= 0
ifeq ($(NO_EXP_TRAINER),1)
	CPPFLAGS += -DNO_EXP_TRAINER
endif

# Compile-time toggle: start the game with the Super Rare Candy key item.
# Usage: make START_WITH_SUPER_RARE_CANDY=1
START_WITH_SUPER_RARE_CANDY ?= 0
ifeq ($(START_WITH_SUPER_RARE_CANDY),1)
	CPPFLAGS += -DSTART_WITH_SUPER_RARE_CANDY
endif

# Compile-time toggle: start the game with the Cap Candy key item, which raises
# a Pokemon's level to the current level cap (see LEVEL_CAP). Usage: make START_WITH_CAP_CANDY=1
START_WITH_CAP_CANDY ?= 0
ifeq ($(START_WITH_CAP_CANDY),1)
	CPPFLAGS += -DSTART_WITH_CAP_CANDY
endif

# Compile-time toggle: EXP is subtracted instead of added.
# Usage: make NEGATIVE_EXP=1
NEGATIVE_EXP ?= 0
ifeq ($(NEGATIVE_EXP),1)
	CPPFLAGS += -DNEGATIVE_EXP
endif

# Compile-time setting: multiply EXP gained on faint, expressed in tenths
# (10 = 1.0x, 30 = 3.0x). Default 10 keeps vanilla EXP. Usage: make EXP_MULTIPLIER=25
EXP_MULTIPLIER ?= 10
CPPFLAGS += -DEXP_MULTIPLIER=$(EXP_MULTIPLIER)

# Compile-time toggle: prevent using Poké Balls.
# Usage: make NO_POKEBALLS=1
NO_POKEBALLS ?= 0
ifeq ($(NO_POKEBALLS),1)
	CPPFLAGS += -DNO_POKEBALLS
endif

# Compile-time toggle: prevent using bag items and berries in battle.
# Poké Balls (and escape items) are still allowed.
# Usage: make NO_BATTLE_ITEMS=1
NO_BATTLE_ITEMS ?= 0
ifeq ($(NO_BATTLE_ITEMS),1)
	CPPFLAGS += -DNO_BATTLE_ITEMS
endif

# Compile-time toggle: stock Poké Balls in Oldale Mart before the first rival fight.
# Usage: make FIRST_SHOP_POKEBALLS=1
FIRST_SHOP_POKEBALLS ?= 0
ifeq ($(FIRST_SHOP_POKEBALLS),1)
	CPPFLAGS += -DFIRST_SHOP_POKEBALLS
endif

# Compile-time toggle: use money instead of PP for moves.
# Usage: make MONEY_FOR_MOVES=1
MONEY_FOR_MOVES ?= 0
ifeq ($(MONEY_FOR_MOVES),1)
	CPPFLAGS += -DMONEY_FOR_MOVES
endif

# Compile-time toggle: remove Nurse Joy NPCs from Pokemon Center 1F maps.
# Usage: make REMOVE_POKEMON_CENTER_JOY=1
REMOVE_POKEMON_CENTER_JOY ?= 0
ifeq ($(REMOVE_POKEMON_CENTER_JOY),1)
	CPPFLAGS += -DREMOVE_POKEMON_CENTER_JOY
endif

# Compile-time toggle: disable field interactions with PCs.
# Usage: make DISABLE_PCS=1
DISABLE_PCS ?= 0
ifeq ($(DISABLE_PCS),1)
	CPPFLAGS += -DDISABLE_PCS
endif

# Compile-time toggle: skip/instant-complete visual fade in/out animations.
# Usage: make SKIP_FADE_ANIMS=1
SKIP_FADE_ANIMS ?= 0
ifeq ($(SKIP_FADE_ANIMS),1)
	CPPFLAGS += -DSKIP_FADE_ANIMS
endif

# Compile-time toggle: shorten the normal start-menu save flow without
# changing or skipping any flash writes or verification.
# Usage: make FAST_SAVE=1
FAST_SAVE ?= 0
ifeq ($(FAST_SAVE),1)
	CPPFLAGS += -DFAST_SAVE
endif

# Compile-time toggle: require A-press to advance every battle message.
# Usage: make MANUAL_BATTLE_TEXT=1
MANUAL_BATTLE_TEXT ?= 0
ifeq ($(MANUAL_BATTLE_TEXT),1)
	CPPFLAGS += -DMANUAL_BATTLE_TEXT
endif
# Compile-time toggle: skip the intro cutscene and go straight to title screen.
# Usage: make SKIP_INTRO_CUTSCENE=1
SKIP_INTRO_CUTSCENE ?= 0
ifeq ($(SKIP_INTRO_CUTSCENE),1)
	CPPFLAGS += -DSKIP_INTRO_CUTSCENE
endif
# Compile-time toggle: skip the new-game moving/truck intro after gender/name.
# Usage: make FAST_INTRO=1
FAST_INTRO ?= 0
ifeq ($(FAST_INTRO),1)
	CPPFLAGS += -DFAST_INTRO
endif
SKIP_BATTLE_TRANSITION ?= 0
ifeq ($(SKIP_BATTLE_TRANSITION),1)
	CPPFLAGS += -DSKIP_BATTLE_TRANSITION
endif
# Compile-time toggle: speed up battle intro/sendout/healthbox animations without
# skipping the battle transition itself. SKIP_BATTLE_TRANSITION also enables these
# speedups for compatibility with older presets.
# Usage: make FAST_BATTLE_ANIMS=1
FAST_BATTLE_ANIMS ?= 0
ifeq ($(FAST_BATTLE_ANIMS),1)
	CPPFLAGS += -DFAST_BATTLE_ANIMS
endif
BATTLE_ANIM_SPEED_MULTIPLIER ?= 1
CPPFLAGS += -DBATTLE_ANIM_SPEED_MULTIPLIER=$(BATTLE_ANIM_SPEED_MULTIPLIER)

ifeq ($(MODERN),0)
  CPPFLAGS += -I tools/agbcc/include -I tools/agbcc -nostdinc -undef -std=gnu89
  CC1 := tools/agbcc/bin/agbcc$(EXE)
  override CFLAGS += -mthumb-interwork -Wimplicit -Wparentheses -Werror -O$(O_LEVEL) -fhex-asm -g
  LIBPATH := -L ../../tools/agbcc/lib
  LIB := $(LIBPATH) -lgcc -lc -L../../libagbsyscall -lagbsyscall
else
  # Note: The makefile must be set up to not call these if modern == 0
  MODERNCC := $(PREFIX)gcc
  PATH_MODERNCC := PATH="$(PATH)" $(MODERNCC)
  CC1 := $(shell $(PATH_MODERNCC) --print-prog-name=cc1) -quiet
  override CFLAGS += -mthumb -mthumb-interwork -O$(O_LEVEL) -mabi=apcs-gnu -mtune=arm7tdmi -march=armv4t -fno-toplevel-reorder -Wno-pointer-to-int-cast
  LIBPATH := -L "$(dir $(shell $(PATH_MODERNCC) -mthumb -print-file-name=libgcc.a))" -L "$(dir $(shell $(PATH_MODERNCC) -mthumb -print-file-name=libnosys.a))" -L "$(dir $(shell $(PATH_MODERNCC) -mthumb -print-file-name=libc.a))"
  LIB := $(LIBPATH) -lc -lnosys -lgcc -L../../libagbsyscall -lagbsyscall
endif

# Rebuild objects when build flags change.
# (Make does not automatically consider changes to command-line variables like SKIP_BATTLE_TRANSITION.)
CONFIG_FLAGS_FILE := $(OBJ_DIR)/.config_flags

.PHONY: FORCE
FORCE:

$(CONFIG_FLAGS_FILE): FORCE
	@mkdir -p $(dir $@)
	@tmp=$@.tmp; \
	{ \
		echo "CPPFLAGS=$(CPPFLAGS)"; \
		echo "CFLAGS=$(CFLAGS)"; \
		echo "ASFLAGS=$(ASFLAGS)"; \
	} > $$tmp; \
	if [ -f $@ ] && cmp -s $$tmp $@; then rm -f $$tmp; else mv -f $$tmp $@; fi
# Enable debug info if set
ifeq ($(DINFO),1)
  override CFLAGS += -g
endif

# Variable filled out in other make files
AUTO_GEN_TARGETS :=
include make_tools.mk
# Tool executables
GFX       := $(TOOLS_DIR)/gbagfx/gbagfx$(EXE)
WAV2AGB   := $(TOOLS_DIR)/wav2agb/wav2agb$(EXE)
MID       := $(TOOLS_DIR)/mid2agb/mid2agb$(EXE)
SCANINC   := $(TOOLS_DIR)/scaninc/scaninc$(EXE)
PREPROC   := $(TOOLS_DIR)/preproc/preproc$(EXE)
RAMSCRGEN := $(TOOLS_DIR)/ramscrgen/ramscrgen$(EXE)
FIX       := $(TOOLS_DIR)/gbafix/gbafix$(EXE)
MAPJSON   := $(TOOLS_DIR)/mapjson/mapjson$(EXE)
JSONPROC  := $(TOOLS_DIR)/jsonproc/jsonproc$(EXE)

PERL := perl
SHA1 := $(shell { command -v sha1sum || command -v shasum; } 2>/dev/null) -c

MAKEFLAGS += --no-print-directory

# Clear the default suffixes
.SUFFIXES:
# Don't delete intermediate files
.SECONDARY:
# Delete files that weren't built properly
.DELETE_ON_ERROR:

RULES_NO_SCAN += libagbsyscall clean clean-assets tidy tidymodern tidynonmodern generated clean-generated
.PHONY: all rom modern compare
.PHONY: $(RULES_NO_SCAN)

infoshell = $(foreach line, $(shell $1 | sed "s/ /__SPACE__/g"), $(info $(subst __SPACE__, ,$(line))))

# Check if we need to scan dependencies based on the chosen rule OR user preference
NODEP ?= 0
# Check if we need to pre-build tools and generate assets based on the chosen rule.
SETUP_PREREQS ?= 1
# Disable dependency scanning for rules that don't need it.
ifneq (,$(MAKECMDGOALS))
  ifeq (,$(filter-out $(RULES_NO_SCAN),$(MAKECMDGOALS)))
    NODEP := 1
    SETUP_PREREQS := 0
  endif
endif

.SHELLSTATUS ?= 0

ifeq ($(SETUP_PREREQS),1)
  # If set on: Default target or a rule requiring a scan
  # Forcibly execute `make tools` since we need them for what we are doing.
  $(foreach line, $(shell $(MAKE) -f make_tools.mk | sed "s/ /__SPACE__/g"), $(info $(subst __SPACE__, ,$(line))))
  ifneq ($(.SHELLSTATUS),0)
    $(error Errors occurred while building tools. See error messages above for more details)
  endif
  # Oh and also generate mapjson sources before we use `SCANINC`.
  $(foreach line, $(shell $(MAKE) generated | sed "s/ /__SPACE__/g"), $(info $(subst __SPACE__, ,$(line))))
  ifneq ($(.SHELLSTATUS),0)
    $(error Errors occurred while generating map-related sources. See error messages above for more details)
  endif
endif

# Collect sources
C_SRCS_IN := $(wildcard $(C_SUBDIR)/*.c $(C_SUBDIR)/*/*.c $(C_SUBDIR)/*/*/*.c)
C_SRCS := $(foreach src,$(C_SRCS_IN),$(if $(findstring .inc.c,$(src)),,$(src)))
C_OBJS := $(patsubst $(C_SUBDIR)/%.c,$(C_BUILDDIR)/%.o,$(C_SRCS))

C_ASM_SRCS := $(wildcard $(C_SUBDIR)/*.s $(C_SUBDIR)/*/*.s $(C_SUBDIR)/*/*/*.s)
C_ASM_OBJS := $(patsubst $(C_SUBDIR)/%.s,$(C_BUILDDIR)/%.o,$(C_ASM_SRCS))

ASM_SRCS := $(wildcard $(ASM_SUBDIR)/*.s)
ASM_OBJS := $(patsubst $(ASM_SUBDIR)/%.s,$(ASM_BUILDDIR)/%.o,$(ASM_SRCS))

# get all the data/*.s files EXCEPT the ones with specific rules
REGULAR_DATA_ASM_SRCS := $(filter-out $(DATA_ASM_SUBDIR)/maps.s $(DATA_ASM_SUBDIR)/map_events.s, $(wildcard $(DATA_ASM_SUBDIR)/*.s))

DATA_ASM_SRCS := $(wildcard $(DATA_ASM_SUBDIR)/*.s)
DATA_ASM_OBJS := $(patsubst $(DATA_ASM_SUBDIR)/%.s,$(DATA_ASM_BUILDDIR)/%.o,$(DATA_ASM_SRCS))

SONG_SRCS := $(wildcard $(SONG_SUBDIR)/*.s)
SONG_OBJS := $(patsubst $(SONG_SUBDIR)/%.s,$(SONG_BUILDDIR)/%.o,$(SONG_SRCS))

MID_SRCS := $(wildcard $(MID_SUBDIR)/*.mid)
MID_OBJS := $(patsubst $(MID_SUBDIR)/%.mid,$(MID_BUILDDIR)/%.o,$(MID_SRCS))

OBJS     := $(C_OBJS) $(C_ASM_OBJS) $(ASM_OBJS) $(DATA_ASM_OBJS) $(SONG_OBJS) $(MID_OBJS)
OBJS_REL := $(patsubst $(OBJ_DIR)/%,%,$(OBJS))

SUBDIRS  := $(sort $(dir $(OBJS)))
$(shell mkdir -p $(SUBDIRS))

# Pretend rules that are actually flags defer to `make all`
modern: all
compare: all

# Other rules
rom: $(ROM)
ifeq ($(COMPARE),1)
	@$(SHA1) rom.sha1
endif

syms: $(SYM)

clean: tidy clean-tools clean-generated clean-assets
	@$(MAKE) clean -C libagbsyscall

clean-assets:
	rm -f $(MID_SUBDIR)/*.s
	rm -f $(DATA_ASM_SUBDIR)/layouts/layouts.inc $(DATA_ASM_SUBDIR)/layouts/layouts_table.inc
	rm -f $(DATA_ASM_SUBDIR)/maps/connections.inc $(DATA_ASM_SUBDIR)/maps/events.inc $(DATA_ASM_SUBDIR)/maps/groups.inc $(DATA_ASM_SUBDIR)/maps/headers.inc
	find sound -iname '*.bin' -exec rm {} +
	find . \( -iname '*.1bpp' -o -iname '*.4bpp' -o -iname '*.8bpp' -o -iname '*.gbapal' -o -iname '*.lz' -o -iname '*.rl' -o -iname '*.latfont' -o -iname '*.hwjpnfont' -o -iname '*.fwjpnfont' \) -exec rm {} +
	find $(DATA_ASM_SUBDIR)/maps \( -iname 'connections.inc' -o -iname 'events.inc' -o -iname 'header.inc' \) -exec rm {} +

tidy: tidynonmodern tidymodern

tidynonmodern:
	rm -f $(ROM_NAME) $(ELF_NAME) $(MAP_NAME)
	rm -rf $(OBJ_DIR_NAME)

tidymodern:
	rm -f $(MODERN_ROM_NAME) $(MODERN_ELF_NAME) $(MODERN_MAP_NAME)
	rm -rf $(MODERN_OBJ_DIR_NAME)

# Other rules
include graphics_file_rules.mk
include map_data_rules.mk
include spritesheet_rules.mk
include json_data_rules.mk
include audio_rules.mk

# NOTE: Tools must have been built prior (FIXME)
# so you can't really call this rule directly
generated: $(AUTO_GEN_TARGETS)
	@: # Silence the "Nothing to be done for `generated'" message, which some people were confusing for an error.


%.s:   ;
%.png: ;
%.pal: ;
%.wav: ;

%.1bpp:   %.png  ; $(GFX) $< $@
%.4bpp:   %.png  ; $(GFX) $< $@
%.8bpp:   %.png  ; $(GFX) $< $@
%.gbapal: %.pal  ; $(GFX) $< $@
%.gbapal: %.png  ; $(GFX) $< $@
%.lz:     %      ; $(GFX) $< $@
%.rl:     %      ; $(GFX) $< $@

clean-generated:
	@rm -f $(AUTO_GEN_TARGETS)
	@echo "rm -f <AUTO_GEN_TARGETS>"

ifeq ($(MODERN),0)
$(C_BUILDDIR)/libc.o: CC1 := $(TOOLS_DIR)/agbcc/bin/old_agbcc$(EXE)
$(C_BUILDDIR)/libc.o: CFLAGS := -O2
$(C_BUILDDIR)/siirtc.o: CFLAGS := -mthumb-interwork
$(C_BUILDDIR)/agb_flash.o: CFLAGS := -O -mthumb-interwork
$(C_BUILDDIR)/agb_flash_1m.o: CFLAGS := -O -mthumb-interwork
$(C_BUILDDIR)/agb_flash_mx.o: CFLAGS := -O -mthumb-interwork
$(C_BUILDDIR)/m4a.o: CC1 := tools/agbcc/bin/old_agbcc$(EXE)
$(C_BUILDDIR)/record_mixing.o: CFLAGS += -ffreestanding
$(C_BUILDDIR)/librfu_intr.o: CC1 := $(TOOLS_DIR)/agbcc/bin/agbcc_arm$(EXE)
$(C_BUILDDIR)/librfu_intr.o: CFLAGS := -O2 -mthumb-interwork -quiet
else
$(C_BUILDDIR)/librfu_intr.o: CFLAGS := -mthumb-interwork -O2 -mabi=apcs-gnu -mtune=arm7tdmi -march=armv4t -fno-toplevel-reorder -Wno-pointer-to-int-cast
$(C_BUILDDIR)/berry_crush.o: override CFLAGS += -Wno-address-of-packed-member
endif

# Dependency rules (for the *.c & *.s sources to .o files)
# 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 (Icedude_907: there is soon).

$(C_BUILDDIR)/%.o: $(C_SUBDIR)/%.c $(CONFIG_FLAGS_FILE)
ifneq ($(KEEP_TEMPS),1)
	@echo "$(CC1) <flags> -o $@ $<"
	@$(CPP) $(CPPFLAGS) $< | $(PREPROC) -i $< charmap.txt | $(CC1) $(CFLAGS) -o - - | cat - <(echo -e ".text\n\t.align\t2, 0") | $(AS) $(ASFLAGS) -o $@ -
else
	@$(CPP) $(CPPFLAGS) $< -o $(C_BUILDDIR)/$*.i
	@$(PREPROC) $(C_BUILDDIR)/$*.i charmap.txt | $(CC1) $(CFLAGS) -o $(C_BUILDDIR)/$*.s
	@echo -e ".text\n\t.align\t2, 0\n" >> $(C_BUILDDIR)/$*.s
	$(AS) $(ASFLAGS) -o $@ $(C_BUILDDIR)/$*.s
endif

$(C_BUILDDIR)/%.d: $(C_SUBDIR)/%.c
	$(SCANINC) -M $@ $(INCLUDE_SCANINC_ARGS) -I tools/agbcc/include $<

ifneq ($(NODEP),1)
-include $(addprefix $(OBJ_DIR)/,$(C_SRCS:.c=.d))
endif

$(ASM_BUILDDIR)/%.o: $(ASM_SUBDIR)/%.s $(CONFIG_FLAGS_FILE)
	$(AS) $(ASFLAGS) -o $@ $<

$(ASM_BUILDDIR)/%.d: $(ASM_SUBDIR)/%.s
	$(SCANINC) -M $@ $(INCLUDE_SCANINC_ARGS) -I "" $<

ifneq ($(NODEP),1)
-include $(addprefix $(OBJ_DIR)/,$(ASM_SRCS:.s=.d))
endif

$(C_BUILDDIR)/%.o: $(C_SUBDIR)/%.s $(CONFIG_FLAGS_FILE)
	$(PREPROC) $< charmap.txt | $(CPP) $(CPPFLAGS) $(INCLUDE_SCANINC_ARGS) - | $(PREPROC) -ie $< charmap.txt | $(AS) $(ASFLAGS) -o $@

$(C_BUILDDIR)/%.d: $(C_SUBDIR)/%.s
	$(SCANINC) -M $@ $(INCLUDE_SCANINC_ARGS) -I "" $<

ifneq ($(NODEP),1)
-include $(addprefix $(OBJ_DIR)/,$(C_ASM_SRCS:.s=.d))
endif

$(DATA_ASM_BUILDDIR)/%.o: $(DATA_ASM_SUBDIR)/%.s $(CONFIG_FLAGS_FILE)
	$(PREPROC) $< charmap.txt | $(CPP) $(CPPFLAGS) $(INCLUDE_SCANINC_ARGS) - | $(PREPROC) -ie $< charmap.txt | $(AS) $(ASFLAGS) -o $@

$(DATA_ASM_BUILDDIR)/%.d: $(DATA_ASM_SUBDIR)/%.s
	$(SCANINC) -M $@ $(INCLUDE_SCANINC_ARGS) -I "" $<

ifneq ($(NODEP),1)
-include $(addprefix $(OBJ_DIR)/,$(REGULAR_DATA_ASM_SRCS:.s=.d))
endif

$(OBJ_DIR)/sym_bss.ld: sym_bss.txt
	$(RAMSCRGEN) .bss $< ENGLISH > $@

$(OBJ_DIR)/sym_common.ld: sym_common.txt $(C_OBJS) $(wildcard common_syms/*.txt)
	$(RAMSCRGEN) COMMON $< ENGLISH -c $(C_BUILDDIR),common_syms > $@

$(OBJ_DIR)/sym_ewram.ld: sym_ewram.txt
	$(RAMSCRGEN) ewram_data $< ENGLISH > $@

# Linker script
ifeq ($(MODERN),0)
LD_SCRIPT := ld_script.ld
LD_SCRIPT_DEPS := $(OBJ_DIR)/sym_bss.ld $(OBJ_DIR)/sym_common.ld $(OBJ_DIR)/sym_ewram.ld
else
LD_SCRIPT := ld_script_modern.ld
LD_SCRIPT_DEPS :=
endif

# Final rules

libagbsyscall:
	@$(MAKE) -C libagbsyscall TOOLCHAIN=$(TOOLCHAIN) MODERN=$(MODERN)

# Elf from object files
LDFLAGS = -Map ../../$(MAP)
$(ELF): $(LD_SCRIPT) $(LD_SCRIPT_DEPS) $(OBJS) libagbsyscall
	@cd $(OBJ_DIR) && $(LD) $(LDFLAGS) -T ../../$< --print-memory-usage -o ../../$@ $(OBJS_REL) $(LIB) | cat
	@echo "cd $(OBJ_DIR) && $(LD) $(LDFLAGS) -T ../../$< --print-memory-usage -o ../../$@ <objs> <libs> | cat"
	$(FIX) $@ -t"$(TITLE)" -c$(GAME_CODE) -m$(MAKER_CODE) -r$(REVISION) --silent

# Builds the rom from the elf file
$(ROM): $(ELF)
	$(OBJCOPY) -O binary $< $@
	$(FIX) $@ -p --silent

# Symbol file (`make syms`)
$(SYM): $(ELF)
	$(OBJDUMP) -t $< | sort -u | grep -E "^0[2389]" | $(PERL) -p -e 's/^(\w{8}) (\w).{6} \S+\t(\w{8}) (\S+)$$/\1 \2 \3 \4/g' > $@