Zack Buhman
e449090df0
This includes several improvements to the link flags, link script, common makefile, etc.. Previously bss initialization in m68k start was incorrect. m68k can now call static initializers if necessary.
59 lines
1.3 KiB
Makefile
59 lines
1.3 KiB
Makefile
LIB ?= .
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OPT ?= -Og
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ARCH = -march=68000 -mcpu=68000
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AARCH = $(ARCH)
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AFLAGS = -g -gdwarf-4 --fatal-warnings
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CARCH = $(ARCH) -mtune=68000
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CFLAGS += -falign-functions=4 -ffunction-sections -fdata-sections -fshort-enums -ffreestanding -nostdlib
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CFLAGS += -Wall -Werror -Wfatal-errors -Wno-error=unused-variable -g -gdwarf-4 $(OPT)
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LDFLAGS = --gc-sections --print-gc-sections --no-warn-rwx-segment --print-memory-usage --entry=start --orphan-handling=error
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CXXFLAGS = -std=c++20 -fno-exceptions -fno-non-call-exceptions -fno-rtti -fno-threadsafe-statics
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TARGET = m68k-none-elf-
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CC = $(TARGET)gcc
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CXX = $(TARGET)g++
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AS = $(TARGET)as
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LD = $(TARGET)ld
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OBJCOPY = $(TARGET)objcopy
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OBJDUMP = $(TARGET)objdump
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define BUILD_BINARY_O
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$(OBJCOPY) \
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-I binary -O elf32-m68k -B m68k \
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--rename-section .data=.data.$(basename $@) \
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$< $@
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endef
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all: main.bin
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%.o: %.s
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$(AS) $(AARCH) $(AFLAGS) $< -o $@
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%.o: %.S
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$(CC) $(CFLAGS) $(CARCH) -c $< -o $@
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%.o: %.c
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$(CC) $(CFLAGS) $(CARCH) -c $< -o $@
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%.o: %.cpp
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$(CXX) $(CFLAGS) $(CXXFLAGS) $(CARCH) -c $< -o $@
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%.elf: $(LIB)/m68k/vectors.o $(LIB)/m68k/start.o $(LIB)/m68k/handlers.o
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$(LD) $(LDFLAGS) -T $(LIB)/m68k/m68k.lds $^ -o $@
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%.bin: %.elf
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$(OBJCOPY) -O binary $< $@
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#OBJ = vectors.o main.o
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clean:
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rm -f *.iso *.o *.bin *.elf *.cue
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.SUFFIXES:
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.INTERMEDIATE:
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.SECONDARY:
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.PHONY: all clean
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