Makefile

#---------------------------------------------------------------------------------
.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
# 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
#
# CONFIG_JSON is the filename of the NPDM config file (.json), relative to the project folder.
#   If not set, it attempts to use one of the following (in this order):
#     - <Project name>.json
#     - config.json
#   If a JSON file is provided or autodetected, an ExeFS PFS0 (.nsp) is built instead
#   of a homebrew executable (.nro). This is intended to be used for sysmodules.
#   NACP building is skipped as well.
#---------------------------------------------------------------------------------
APP_TITLE	:= untitled
APP_AUTHOR	:= TotalJustice
APP_VERSION	:= 1.3.0
ICON		:= assets/icon.jpg

TARGET		:=	untitled
BUILD		:=	nxbuild
# untitled
SOURCES     :=	src
# nanovg
SOURCES		+=	src/nanovg src/nanovg/deko3d src/nanovg/deko3d/framework src/nanovg/deko3d/shaders
DATA		:=	data
ROMFS		:=	assets/romfs

# Output folders for autogenerated files in romfs
OUT_SHADERS	:=	shaders

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

# basic
C_OPTIMISE	:=	-O3 -DNDEBUG
# lto
C_OPTIMISE	+=	-flto=3 -ffat-lto-objects -fuse-linker-plugin -flto-compression-level=9 -ffunction-sections -fdata-sections -fmerge-all-constants -Wl,--gc-sections

# warns
MY_DEFINES	:=	-Wall #-Wextra #-Werror # todo: fix warns soon
# stb (we only need jpeg for ns icons)
MY_DEFINES	+=	-DSTBI_ONLY_JPEG
# version
MY_DEFINES	+= -DUNTITLED_VERSION_STRING=$(APP_VERSION)

CFLAGS	:=	$(C_OPTIMISE) $(ARCH) $(DEFINES) $(MY_DEFINES)

CFLAGS	+=	$(INCLUDE) -D__SWITCH__

CXXFLAGS	:= $(CFLAGS) -std=c++23 -fno-exceptions -fno-rtti

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

LIBS	:= -ldeko3d -lnx

#---------------------------------------------------------------------------------
# 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)))
GLSLFILES	:=	$(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.glsl)))
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)

ifneq ($(strip $(ROMFS)),)
	ROMFS_TARGETS :=
	ROMFS_FOLDERS :=
	ifneq ($(strip $(OUT_SHADERS)),)
		ROMFS_SHADERS := $(ROMFS)/$(OUT_SHADERS)
		ROMFS_TARGETS += $(patsubst %.glsl, $(ROMFS_SHADERS)/%.dksh, $(GLSLFILES))
		ROMFS_FOLDERS += $(ROMFS_SHADERS)
	endif

	export ROMFS_DEPS := $(foreach file,$(ROMFS_TARGETS),$(CURDIR)/$(file))
endif

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: $(ROMFS_TARGETS) | $(BUILD)
	@$(MAKE) --no-print-directory -C $(BUILD) -f $(CURDIR)/Makefile

$(BUILD):
	@mkdir -p $@

ifneq ($(strip $(ROMFS_TARGETS)),)

$(ROMFS_TARGETS): | $(ROMFS_FOLDERS)

$(ROMFS_FOLDERS):
	@mkdir -p $@

$(ROMFS_SHADERS)/%_vsh.dksh: %_vsh.glsl
	@echo {vert} $(notdir $<)
	@uam -s vert -o $@ $<

$(ROMFS_SHADERS)/%_tcsh.dksh: %_tcsh.glsl
	@echo {tess_ctrl} $(notdir $<)
	@uam -s tess_ctrl -o $@ $<

$(ROMFS_SHADERS)/%_tesh.dksh: %_tesh.glsl
	@echo {tess_eval} $(notdir $<)
	@uam -s tess_eval -o $@ $<

$(ROMFS_SHADERS)/%_gsh.dksh: %_gsh.glsl
	@echo {geom} $(notdir $<)
	@uam -s geom -o $@ $<

$(ROMFS_SHADERS)/%_fsh.dksh: %_fsh.glsl
	@echo {frag} $(notdir $<)
	@uam -s frag -o $@ $<

$(ROMFS_SHADERS)/%.dksh: %.glsl
	@echo {comp} $(notdir $<)
	@uam -s comp -o $@ $<

endif

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

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

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

#---------------------------------------------------------------------------------
# main targets
#---------------------------------------------------------------------------------

all	:	$(OUTPUT).nro

ifeq ($(strip $(NO_NACP)),)
$(OUTPUT).nro	:	$(OUTPUT).elf $(OUTPUT).nacp $(ROMFS_DEPS)
else
$(OUTPUT).nro	:	$(OUTPUT).elf $(ROMFS_DEPS)
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
#---------------------------------------------------------------------------------------