#---------------------------------------------------------------------------------
.SUFFIXES:
#---------------------------------------------------------------------------------

ifeq ($(strip $(DEVKITPRO)),)
$(error "Please set DEVKITPRO in your environment. export DEVKITPRO=<path to>/devkitpro")
endif

TOPDIR ?= $(CURDIR)
include $(DEVKITPRO)/libnx/switch_rules

#---------------------------------------------------------------------------------
# TARGET is the name of the output
# BUILD is the directory where object files & intermediate files will be placed
# SOURCES is a list of directories containing source code
# DATA is a list of directories containing data files
# INCLUDES is a list of directories containing header files
# EXEFS_SRC is the optional input directory containing data copied into exefs, if anything this normally should only contain "main.npdm".
# ROMFS is the directory containing data to be added to RomFS, relative to the Makefile (Optional)
#
# NO_ICON: if set to anything, do not use icon.
# NO_NACP: if set to anything, no .nacp file is generated.
# APP_TITLE is the name of the app stored in the .nacp file (Optional)
# APP_AUTHOR is the author of the app stored in the .nacp file (Optional)
# APP_VERSION is the version of the app stored in the .nacp file (Optional)
# APP_TITLEID is the titleID of the app stored in the .nacp file (Optional)
# ICON is the filename of the icon (.jpg), relative to the project folder.
#   If not set, it attempts to use one of the following (in this order):
#     - <Project name>.jpg
#     - icon.jpg
#     - <libnx folder>/default_icon.jpg
#---------------------------------------------------------------------------------
TARGET      :=  $(notdir $(CURDIR))
BUILD       :=  build
SOURCES     :=  engine/common engine/common/imagelib engine/common/soundlib engine/common/soundlib/libmpg engine/client engine/client/vgui engine/server engine/platform/switch engine/platform/sdl
DATA        :=  data
INCLUDES    :=  include engine engine/platform/sdl engine/common engine/common/imagelib engine/common/soundlib engine/common/stb common engine/server engine/client engine/client/vgui pm_shared
EXEFS_SRC   :=  exefs_src
#ROMFS  :=  romfs

#---------------------------------------------------------------------------------
# options for code generation
#---------------------------------------------------------------------------------
ARCH    :=  -march=armv8-a -mtune=cortex-a57 -mtp=soft -fPIE

CFLAGS  :=  -g -Wall -O2 -ffunction-sections  \
            $(ARCH) $(DEFINES)

CFLAGS  +=  $(INCLUDE) -D__SWITCH__ -DXASH_SDL -DXASH_DLL_LOADER -DSINGLE_BINARY -DXASHSDL_MAIN -DXASH_NO_ASYNC_NS_RESOLVE

CXXFLAGS    := $(CFLAGS) -fno-rtti -fno-exceptions -std=gnu++11 -static-libstdc++ -static-libgcc

ASFLAGS :=  -g $(ARCH)
LDFLAGS =   -specs=$(DEVKITPRO)/libnx/switch.specs -g $(ARCH) -Wl,-Map,$(notdir $*.map)

LIBS    := -lnx -lm -lSDL2 -lmpg123 -lglad -lEGL -lglapi -ldrm_nouveau

#---------------------------------------------------------------------------------
# list of directories containing libraries, this must be the top level containing
# include and lib
#---------------------------------------------------------------------------------
LIBDIRS := $(PORTLIBS) $(LIBNX)


#---------------------------------------------------------------------------------
# no real need to edit anything past this point unless you need to add additional
# rules for different file extensions
#---------------------------------------------------------------------------------
ifneq ($(BUILD),$(notdir $(CURDIR)))
#---------------------------------------------------------------------------------

export OUTPUT   :=  $(CURDIR)/$(TARGET)
export TOPDIR   :=  $(CURDIR)

export VPATH    :=  $(foreach dir,$(SOURCES),$(CURDIR)/$(dir)) \
            $(foreach dir,$(DATA),$(CURDIR)/$(dir))

export DEPSDIR  :=  $(CURDIR)/$(BUILD)

CFILES      :=  $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.c)))
CPPFILES    :=  $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.cpp)))
SFILES      :=  $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.s)))
BINFILES    :=  $(foreach dir,$(DATA),$(notdir $(wildcard $(dir)/*.*)))

#---------------------------------------------------------------------------------
# use CXX for linking C++ projects, CC for standard C
#---------------------------------------------------------------------------------
ifeq ($(strip $(CPPFILES)),)
#---------------------------------------------------------------------------------
    export LD   :=  $(CC)
#---------------------------------------------------------------------------------
else
#---------------------------------------------------------------------------------
    export LD   :=  $(CXX)
#---------------------------------------------------------------------------------
endif
#---------------------------------------------------------------------------------

export OFILES_BIN   :=  $(addsuffix .o,$(BINFILES))
export OFILES_SRC   :=  $(CPPFILES:.cpp=.o) $(CFILES:.c=.o) $(SFILES:.s=.o)
export OFILES   :=  $(OFILES_BIN) $(OFILES_SRC)
export HFILES_BIN   :=  $(addsuffix .h,$(subst .,_,$(BINFILES)))

export INCLUDE  :=  $(foreach dir,$(INCLUDES),-I$(CURDIR)/$(dir)) \
            $(foreach dir,$(LIBDIRS),-I$(dir)/include) \
            -I$(CURDIR)/$(BUILD)

export LIBPATHS :=  $(foreach dir,$(LIBDIRS),-L$(dir)/lib)

export BUILD_EXEFS_SRC := $(TOPDIR)/$(EXEFS_SRC)

ifeq ($(strip $(ICON)),)
    icons := $(wildcard *.jpg)
    ifneq (,$(findstring $(TARGET).jpg,$(icons)))
        export APP_ICON := $(TOPDIR)/$(TARGET).jpg
    else
        ifneq (,$(findstring icon.jpg,$(icons)))
            export APP_ICON := $(TOPDIR)/icon.jpg
        endif
    endif
else
    export APP_ICON := $(TOPDIR)/$(ICON)
endif

ifeq ($(strip $(NO_ICON)),)
    export NROFLAGS += --icon=$(APP_ICON)
endif

ifeq ($(strip $(NO_NACP)),)
    export NROFLAGS += --nacp=$(CURDIR)/$(TARGET).nacp
endif

ifneq ($(APP_TITLEID),)
    export NACPFLAGS += --titleid=$(APP_TITLEID)
endif

ifneq ($(ROMFS),)
    export NROFLAGS += --romfsdir=$(CURDIR)/$(ROMFS)
endif

.PHONY: $(BUILD) clean all

#---------------------------------------------------------------------------------
all: $(BUILD)

$(BUILD):
    @[ -d $@ ] || mkdir -p $@
    @$(MAKE) --no-print-directory -C $(BUILD) -f $(CURDIR)/Makefile

#---------------------------------------------------------------------------------
clean:
    @echo clean ...
    @rm -fr $(BUILD) $(TARGET).pfs0 $(TARGET).nso $(TARGET).nro $(TARGET).nacp $(TARGET).elf


#---------------------------------------------------------------------------------
else
.PHONY: all

DEPENDS :=  $(OFILES:.o=.d)

#---------------------------------------------------------------------------------
# main targets
#---------------------------------------------------------------------------------
all :   $(OUTPUT).pfs0 $(OUTPUT).nro

$(OUTPUT).pfs0  :   $(OUTPUT).nso

$(OUTPUT).nso   :   $(OUTPUT).elf

ifeq ($(strip $(NO_NACP)),)
$(OUTPUT).nro   :   $(OUTPUT).elf $(OUTPUT).nacp
else
$(OUTPUT).nro   :   $(OUTPUT).elf
endif

$(OUTPUT).elf   :   $(OFILES)

$(OFILES_SRC)   : $(HFILES_BIN)

#---------------------------------------------------------------------------------
# you need a rule like this for each extension you use as binary data
#---------------------------------------------------------------------------------
%.bin.o %_bin.h :   %.bin
#---------------------------------------------------------------------------------
    @echo $(notdir $<)
    @$(bin2o)

-include $(DEPENDS)

#---------------------------------------------------------------------------------------
endif
#---------------------------------------------------------------------------------------