alexmr09
78 lines
1.8 KiB
Makefile
78 lines
1.8 KiB
Makefile
# Copyright lowRISC contributors.
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# Licensed under the Apache License, Version 2.0, see LICENSE for details.
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# SPDX-License-Identifier: Apache-2.0
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COMMON_DIR := $(shell dirname $(realpath $(lastword $(MAKEFILE_LIST))))
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COMMON_SRCS = $(wildcard $(COMMON_DIR)/*.c)
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INCS := -I$(COMMON_DIR)
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#ARCH = rv32im # to disable compressed instructions
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ARCH ?= rv32imc
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ifdef PROGRAM
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PROGRAM_C := $(PROGRAM).c
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endif
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SRCS = $(COMMON_SRCS) $(PROGRAM_C) $(EXTRA_SRCS)
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C_SRCS = $(filter %.c, $(SRCS))
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ASM_SRCS = $(filter %.S, $(SRCS))
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CPLUSPLUS = $(filter %.cpp $(SRCS))
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CC = riscv32-unknown-elf-gcc
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CROSS_COMPILE = $(patsubst %-gcc,%-,$(CC))
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OBJCOPY ?= $(CROSS_COMPILE)objcopy
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OBJDUMP ?= $(CROSS_COMPILE)objdump
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LINKER_SCRIPT ?= $(COMMON_DIR)/link.ld
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CRT ?= $(COMMON_DIR)/crt0.S
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CFLAGS ?= -march=$(ARCH) -mabi=ilp32 -static -mcmodel=medany -Wall -g -O3\
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-fvisibility=hidden -nostartfiles -ffreestanding $(PROGRAM_CFLAGS)
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OBJS := ${C_SRCS:.c=.o} ${ASM_SRCS:.S=.o} ${CRT:.S=.o}
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DEPS = $(OBJS:%.o=%.d)
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ifdef PROGRAM
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OUTFILES := $(PROGRAM).elf $(PROGRAM).vmem $(PROGRAM).bin
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else
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OUTFILES := $(OBJS)
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endif
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all: $(OUTFILES)
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ifdef PROGRAM
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$(PROGRAM).elf: $(OBJS) $(LINKER_SCRIPT)
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$(CC) $(CFLAGS) -T $(LINKER_SCRIPT) $(OBJS) -o $@ $(LIBS)
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.PHONY: disassemble
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disassemble: $(PROGRAM).dis
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endif
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%.dis: %.elf
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$(OBJDUMP) -fhSD $^ > $@
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# Note: this target requires the srecord package to be installed.
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# XXX: This could be replaced by objcopy once
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# https://sourceware.org/bugzilla/show_bug.cgi?id=19921
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# is widely available.
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%.vmem: %.bin
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srec_cat $^ -binary -offset 0x0000 -byte-swap 4 -o $@ -vmem
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%.bin: %.elf
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$(OBJCOPY) -O binary $^ $@
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%.o: %.c
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$(CC) $(CFLAGS) -MMD -c $(INCS) -o $@ $<
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%.o: %.S
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$(CC) $(CFLAGS) -MMD -c $(INCS) -o $@ $<
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clean:
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$(RM) -f $(OBJS) $(DEPS)
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distclean: clean
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$(RM) -f $(OUTFILES)
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