Makefile.nspire

# Note to future self:
#
# This file is pretty much a minimal copy of make_base modified to build for the
# TI-Nspire. Since the original project is archived, it would make more sense
# to simply fork the original and merge them together. For now, I'll just keep
# using this separate Makefile.

# ------------
# Configurable
# ------------

# Project Name
EXE = haxagon

# Directories
SOURCE_DIRS := source/Core source/Factories source/Objects source/States source/Driver/Nspire
INCLUDE_DIRS := include
MEMORYFS_DIR := romfs
BUILD_DIR := build
OUTPUT_DIR := output

# MemoryFS Packable Extensions
MEMORYFS_EXT = haxagon txt

# Compilers
CC = nspire-gcc
CXX = nspire-g++
LD = nspire-ld
GENZEHN = genzehn
OPTIMIZE ?= fast

# Flags
COMMONFLAGS := -O$(OPTIMIZE) $(patsubst %,-I%,$(INCLUDE_DIRS)) -D_nspire -DOLD_SCREEN_API
COMMONFLAGS += -Wall -W -marm -ffast-math -mcpu=arm926ej-s -fno-math-errno -fomit-frame-pointer -flto -fgcse-sm -fgcse-las -funsafe-loop-optimizations -fno-fat-lto-objects -frename-registers -fprefetch-loop-arrays -Wno-narrowing
CCFLAGS := $(COMMONFLAGS)
CXXFLAGS := $(COMMONFLAGS) -fno-rtti -std=gnu++17
LDFLAGS = -lm -lnspireio
ZEHNFLAGS = --name "Super-Haxagon" --version 00 --240x320-support true

# --------
# Internal
# --------
TARGET_BUILD_DIR := $(BUILD_DIR)/nspire-arm
TARGET_OUTPUT_DIR := $(OUTPUT_DIR)/nspire-arm

rwildcard=$(wildcard $1/$2) $(foreach d,$(wildcard $1/*),$(call rwildcard,$d,$2))

OUTPUT_FILES := $(TARGET_OUTPUT_DIR)/$(EXE).tns $(TARGET_OUTPUT_DIR)/$(EXE).elf
MEMORYFS_OBJECT_FILES := $(foreach ext,$(MEMORYFS_EXT),$(patsubst %.$(ext),$(TARGET_BUILD_DIR)/%.o,$(call rwildcard,$(MEMORYFS_DIR),*.$(ext))))
OBJECT_FILES := $(MEMORYFS_OBJECT_FILES) $(foreach dir,$(SOURCE_DIRS), \
			$(patsubst %.c,$(TARGET_BUILD_DIR)/%.o,$(call rwildcard,$(dir),*.c)) \
			$(patsubst %.cpp,$(TARGET_BUILD_DIR)/%.o,$(call rwildcard,$(dir),*.cpp)) \
		)

all: $(OUTPUT_FILES)

$(TARGET_BUILD_DIR)/%.o: %.c
	@echo $@
	@$(CC) $(CCFLAGS) -c $< -o $@
	
$(TARGET_BUILD_DIR)/%.o: $(TARGET_BUILD_DIR)/%.cc
	@echo $@
	@$(CC) $(CCFLAGS) -x c -c $< -o $@

$(TARGET_BUILD_DIR)/%.o: %.cpp
	@echo $@
	@$(CXX) $(CXXFLAGS) -c $< -o $@

%.elf: $(OBJECT_FILES)
	@echo $@
	@$(LD) $^ -o $@ $(COMMONFLAGS) $(LDFLAGS)

%.tns: $(TARGET_OUTPUT_DIR)/$(EXE).elf
	@echo $@
	@$(GENZEHN) $(ZEHNFLAGS) --input $^ --output $@.zehn
	@make-prg $@.zehn $@
	@rm $@.zehn

.PHONY: clean
clean:
	@rm -rf $(TARGET_BUILD_DIR) $(TARGET_OUTPUT_DIR)
	@echo "Cleaned."

define createdirrule
$(1): | $(dir $(1))

ifndef $(dir $(1))_DIRECTORY_RULE_IS_DEFINED
$(dir $(1)):
	@mkdir -p $$@

$(dir $(1))_DIRECTORY_RULE_IS_DEFINED := 1
endif
endef

define memoryfs
.PRECIOUS: $$(TARGET_BUILD_DIR)/%.cc
$$(TARGET_BUILD_DIR)/%.cc: %.$1
	@echo $$@
	@xxd -i $$< > $$@
endef    

$(foreach file,$(OBJECT_FILES),$(eval $(call createdirrule,$(file))))
$(foreach file,$(OUTPUT_FILES),$(eval $(call createdirrule,$(file))))
$(foreach extension,$(MEMORYFS_EXT),$(eval $(call memoryfs,$(extension))))