# Global definitions
platform   ?= unix

CC        = $(CROSS_COMPILE)gcc
SYSROOT   = $(shell $(CC) --print-sysroot)

PROCS     = -j4

OBJS      = libpicofe/input.o libpicofe/in_sdl.o libpicofe/linux/in_evdev.o libpicofe/linux/plat.o libpicofe/fonts.o libpicofe/readpng.o libpicofe/config_file.o config.o core.o menu.o main.o options.o overrides.o scale.o unzip.o util.o

BIN       = picoarch

CFLAGS     += -Wall
CFLAGS     += -fdata-sections -ffunction-sections -DPICO_HOME_DIR='"/.picoarch/"' -flto
CFLAGS     += -I./ -I./libretro-common/include/ $(shell $(SYSROOT)/usr/bin/sdl-config --cflags)

LDFLAGS    = -lc -ldl -lgcc -lm -lSDL -lasound -lpng -lz -Wl,--gc-sections -flto

# Unpolished or slow cores that build
# EXTRA_CORES += fbalpha2012
# EXTRA_CORES += mame2003_plus

CORES     = gambatte gpsp mame2000 pcsx_rearmed snes9x2002 snes9x2005 $(EXTRA_CORES)

gambatte_REPO = https://github.com/libretro/gambatte-libretro

fbalpha2012_BUILD_PATH = fbalpha2012/svn-current/trunk
fbalpha2012_MAKEFILE = makefile.libretro

mame2000_REPO = https://github.com/libretro/mame2000-libretro
mame2003_plus_REPO = https://github.com/libretro/mame2003-plus-libretro

pcsx_rearmed_MAKEFILE = Makefile.libretro

ifeq ($(platform), trimui)
	OBJS += plat_trimui.o
	CFLAGS += -mcpu=arm926ej-s -mtune=arm926ej-s -fno-PIC
	LDFLAGS += -fno-PIC

else ifeq ($(platform), unix)
	OBJS += plat_linux.o
	LDFLAGS += -fPIE
endif

ifeq ($(DEBUG), 1)
	CFLAGS += -Og -g
else
	CFLAGS += -Ofast -DNDEBUG

ifneq ($(PROFILE), 1)
	LDFLAGS += -s
endif

endif

ifeq ($(PROFILE), 1)
	CFLAGS += -fno-omit-frame-pointer -pg -g
	LDFLAGS += -pg -g
else ifeq ($(PROFILE), GENERATE)
	CFLAGS	+= -fprofile-generate=./profile/picoarch
	LDFLAGS	+= -lgcov
else ifeq ($(PROFILE), APPLY)
	CFLAGS	+= -fprofile-use -fprofile-dir=./profile/picoarch -fbranch-probabilities
endif

ifeq ($(MINUI), 1)
	MMENU = 1
	CFLAGS += -DMINUI
endif

ifeq ($(MMENU), 1)
	CFLAGS += -DMMENU
	LDFLAGS += -lSDL_image -lSDL_ttf -ldl
endif

SOFILES = $(foreach core,$(CORES),$(core)_libretro.so)

print-%:
	@echo '$*=$($*)'

all: $(BIN) cores

libpicofe/.patched:
	cd libpicofe && git apply -p1 < ../patches/libpicofe/0001-key-combos.patch && touch .patched

clean-libpicofe:
	test ! -f libpicofe/.patched || (cd libpicofe && git apply -p1 -R < ../patches/libpicofe/0001-key-combos.patch && rm .patched)

plat_trimui.o: plat_sdl.c
plat_linux.o: plat_sdl.c

$(BIN): libpicofe/.patched $(OBJS)
	$(CC) $(OBJS) $(LDFLAGS) -o $(BIN)

define CORE_template =

$1_REPO ?= https://github.com/libretro/$(1)/

$1_BUILD_PATH ?= $(1)

$1_MAKE = make $(and $($1_MAKEFILE),-f $($1_MAKEFILE)) platform=$(platform) $(and $(DEBUG),DEBUG=$(DEBUG)) $(and $(PROFILE),PROFILE=$(PROFILE)) $($(1)_FLAGS)

$(1):
	git clone $(if $($1_REVISION),,--depth 1) $$($(1)_REPO) $(1)
	$(if $1_REVISION,cd $(1) && git checkout $($1_REVISION),)
	(test ! -d patches/$(1)) || (cd $(1) && $(foreach patch, $(sort $(wildcard patches/$(1)/*.patch)), git apply -p1 < ../$(patch) &&) true)

$(1)_libretro.so: $(1)
	cd $$($1_BUILD_PATH) && $$($1_MAKE) $(PROCS)
	cp $$($1_BUILD_PATH)/$(1)_libretro.so .

clean-$(1):
	test ! -d $(1) || cd $$($1_BUILD_PATH) && $$($1_MAKE) clean
	rm -f $(1)_libretro.so
endef

$(foreach core,$(CORES),$(eval $(call CORE_template,$(core))))

cores: $(SOFILES)

clean: clean-libpicofe
	rm -f $(OBJS) $(BIN) $(SOFILES)
	rm -rf pkg

clean-all: $(foreach core,$(CORES),clean-$(core)) clean

force-clean: clean
	rm -rf $(CORES)

ifeq ($(platform), trimui)

fbalpha2012_NAME = fba2012
fbalpha2012_ROM_DIR = ARCADE
fbalpha2012_TYPES = zip
fbalpha2012_PAK_NAME = Arcade (FBA)

gambatte_ROM_DIR = GB
gambatte_TYPES = gb,gbc,dmg,zip
gambatte_PAK_NAME = Game Boy

gpsp_ROM_DIR = GBA
gpsp_TYPES = gba,bin,zip
gpsp_PAK_NAME = Game Boy Advance
define gpsp_PAK_EXTRA

needs-swap

endef

mame2000_ROM_DIR = ARCADE
mame2000_TYPES = zip
mame2000_PAK_NAME = Arcade

mame2003_plus_NAME = mame2003+
mame2003_plus_ROM_DIR = ARCADE
mame2003_plus_TYPES = zip
mame2003_plus_PAK_NAME = Arcade (MAME 2003-plus)

pcsx_rearmed_ROM_DIR = PS
pcsx_rearmed_TYPES = bin,cue,img,mdf,pbp,toc,cbn,m3u,chd
pcsx_rearmed_PAK_NAME = PlayStation
define pcsx_rearmed_PAK_EXTRA

needs-swap

endef

snes9x2002_ROM_DIR = SFC
snes9x2002_TYPES = smc,fig,sfc,gd3,gd7,dx2,bsx,swc,zip
snes9x2002_PAK_NAME = Super Nintendo

snes9x2005_ROM_DIR = SFC
snes9x2005_TYPES = smc,fig,sfc,gd3,gd7,dx2,bsx,swc,zip
snes9x2005_PAK_NAME = Super Nintendo (2005)

# -- gmenunx

dist-gmenu-section:
	mkdir -p pkg/gmenunx/Apps/picoarch
	mkdir -p pkg/gmenunx/Apps/gmenunx/sections/libretro
	touch pkg/gmenunx/Apps/gmenunx/sections/libretro/.section

define CORE_gmenushortcut =

$1_NAME ?= $1

define $1_SHORTCUT
title=$$($1_NAME)
exec=/mnt/SDCARD/Apps/picoarch/picoarch
params=/mnt/SDCARD/Apps/picoarch/$1_libretro.so
selectordir=/mnt/SDCARD/Roms/$($1_ROM_DIR)
selectorfilter=$($1_TYPES)
endef

dist-gmenu-$(1): $(BIN) $(1)_libretro.so dist-gmenu-section
	cp $(BIN) $1_libretro.so pkg/gmenunx/Apps/picoarch
	$$(file >pkg/gmenunx/Apps/gmenunx/sections/libretro/$(1),$$($(1)_SHORTCUT))

endef

$(foreach core, $(CORES),$(eval $(call CORE_gmenushortcut,$(core))))

dist-gmenu: $(foreach core, $(CORES), dist-gmenu-$(core))

# -- MinUI

ifeq ($(MINUI), 1)
define CORE_pak_template =

define $1_LAUNCH_SH
#!/bin/sh
# $($1_PAK_NAME).pak/launch.sh

EMU_EXE=picoarch
EMU_DIR=$$$$(dirname "$$$$0")
ROM_DIR=$$$${EMU_DIR/.pak/}
ROM_DIR=$$$${ROM_DIR/Emus/Roms}
EMU_NAME=$$$${ROM_DIR/\/mnt\/SDCARD\/Roms\//}
ROM=$$$${1}
$($1_PAK_EXTRA)
HOME="$$$$ROM_DIR"
cd "$$$$EMU_DIR"
"$$$$EMU_DIR/$$$$EMU_EXE" ./$1_libretro.so "$$$$ROM" &> "/mnt/SDCARD/.minui/logs/$$$$EMU_NAME.txt"
endef

dist-minui-$(1): $(BIN) $(1)_libretro.so
	mkdir -p "pkg/MinUI/Emus/$($1_PAK_NAME).pak"
	$$(file >$1_launch.sh,$$($1_LAUNCH_SH))
	mv $1_launch.sh "pkg/MinUI/Emus/$($1_PAK_NAME).pak/launch.sh"
	cp $(BIN) $1_libretro.so "pkg/MinUI/Emus/$($1_PAK_NAME).pak"

endef

$(foreach core, $(CORES),$(eval $(call CORE_pak_template,$(core))))

dist-minui: $(foreach core, $(CORES), dist-minui-$(core))

endif # MINUI=1

endif # platform=trimui