#
# SPDX-License-Identifier: BSD-3-Clause
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# Copyright © 2019 Keith Packard
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CFLAGS=--oslib=semihost -O -g -Wl,-gc-sections

CPP_RISCV=riscv64-unknown-elf-g++ -specs=picolibcpp.specs 
CC_RISCV=riscv64-unknown-elf-gcc -specs=picolibc.specs 
CFLAGS_RISCV=$(CFLAGS) -march=rv32imac -mabi=ilp32 -Wl,-Thello-world-riscv.ld

CPP_ARM=arm-picolibc-eabi-c++ -specs=picolibcpp.specs 
CC_ARM=arm-picolibc-eabi-gcc -specs=picolibc.specs 
CFLAGS_ARM=$(CFLAGS) -mcpu=cortex-m3 -Wl,-Thello-world-arm.ld

CPP_AARCH64=aarch64-unknown-elf-g++ -specs=picolibcpp.specs 
CC_AARCH64=aarch64-unknown-elf-gcc -specs=picolibc.specs 
CFLAGS_AARCH64=$(CFLAGS) -Wl,-Thello-world-aarch64.ld

all: hello-world-riscv.elf hello-world-arm.elf hello-world-aarch64.elf \
	hello-world++-riscv.elf hello-world++-arm.elf hello-world++-aarch64.elf


hello-world-riscv.elf: hello-world.c
	$(CC_RISCV) $(CFLAGS_RISCV) -o $@ $^ -Wl,-Map=hello-world-riscv.map

hello-world-arm.elf: hello-world.c
	$(CC_ARM) $(CFLAGS_ARM) -o $@ $^ -Wl,-Map=hello-world-arm.map

hello-world-aarch64.elf: hello-world.c
	$(CC_AARCH64) $(CFLAGS_AARCH64) -o $@ $^ -Wl,-Map=hello-world-aarch64.map

clean:
	rm -f *.elf *.map

hello-world++-native.elf: hello-world++.c++
	c++ -o $@ $^

hello-world++-arm.elf:  hello-world++.c++
	$(CPP_ARM) $(CFLAGS_ARM) -Wl,-Map=hello-world++-arm.map -o $@ $^

hello-world++-riscv.elf:  hello-world++.c++
	$(CPP_RISCV) $(CFLAGS_RISCV) -Wl,-Map=hello-world++-riscv.map -o $@ $^

hello-world++-aarch64.elf:  hello-world++.c++
	$(CPP_AARCH64) $(CFLAGS_AARCH64) -Wl,-Map=hello-world++-aarch64.map -o $@ $^
