102 lines
3.2 KiB
Makefile
102 lines
3.2 KiB
Makefile
# Aedrix root Makefile
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# Copyright (C) 2012, Aaron Lindsay <aaron@aclindsay.com>
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# Config options for the code itself (should be separated from the Makefile sometime)
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ARCH = arm
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# Config options concerning the build process itself
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VERBOSE ?= 0 # 1 shows all compiler flags, 0 shows cleaner output
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V = $(if $(VERBOSE:1=),@) # Use this to prefix commands that should only be shown when VERBOSE==1
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# Define the tools to be used
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TOOL_PREFIX = arm-elf-
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AS = $(TOOL_PREFIX)as
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CC = $(TOOL_PREFIX)gcc
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LD = $(TOOL_PREFIX)ld
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OBJCOPY = $(TOOL_PREFIX)objcopy
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OBJDUMP = $(TOOL_PREFIX)objdump
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# Define the flags we'll need for our tools
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INCLUDES = -I include -I arch/$(ARCH)/include
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KCFLAGS = -g -Wall -Wextra -Werror -nostdlib -nostartfiles -fno-builtin -std=gnu99 -include config.h $(INCLUDES)
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KLDFLAGS = -T arch/$(ARCH)/kernel.ld -L /usr/lib/gcc/arm-elf/4.7.0/
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EXTRA_LIBS = -lgcc
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# Include the config file so we don't compile/link unnecessary objects
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include config
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# Define KOBJS as a 'simply expanded' variable
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KOBJS :=
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# Initialize sub-directory Makefile inclusion
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BASEDIR = $(shell pwd)
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SUBDIRS := arch/$(ARCH) kernel drivers
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ifneq (,$(SUBDIRS))
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include $(patsubst %,%/kernel.mk,$(SUBDIRS))
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endif
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.PHONY: all clean boot boot-gdb
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all: aedrix-kernel.img aedrix-kernel.elf
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aedrix-kernel.elf: $(KOBJS)
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@echo ' LD $@'
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$(V)$(LD) $(KLDFLAGS) -o $@ $(KOBJS) $(EXTRA_LIBS)
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aedrix-kernel.objdump: aedrix-kernel.elf
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@echo 'OBJDUMP $@'
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$(V)$(OBJDUMP) -D $< > $@
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aedrix-kernel.img: aedrix-kernel.elf
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@echo 'OBJCOPY $@'
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$(V)$(OBJCOPY) $< -O binary $@
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%.o: %.c config.h
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@echo ' CC $@'
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$(V)$(CC) $(KCFLAGS) -MD -c -o $@ $<
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@# Automatic dependency generation fixups (http://mad-scientist.net/make/autodep.html)
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@cp $*.d $(*D)/.$(*F).d; \
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sed -e 's/#.*//' -e 's/^[^:]*: *//' -e 's/ *\\$$//' \
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-e '/^$$/ d' -e 's/$$/ :/' < $*.d >> $(*D)/.$(*F).d; \
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rm -f $*.d
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%.o: %.S config.h
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@echo ' AS $@'
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$(V)$(CC) $(KCFLAGS) -MD -c -o $@ $<
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@# Automatic dependency generation fixups (http://mad-scientist.net/make/autodep.html)
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@cp $*.d $(*D)/.$(*F).d; \
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sed -e 's/#.*//' -e 's/^[^:]*: *//' -e 's/ *\\$$//' \
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-e '/^$$/ d' -e 's/$$/ :/' < $*.d >> $(*D)/.$(*F).d; \
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rm -f $*.d
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config.h: config
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@# Generate config header file from make-style include
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@echo ' CONFIG config.h'
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@cp config config.h
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@sed -i '/^\s*#/d' config.h
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@sed -i 's/#.*$$//g' config.h
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@sed -i '/^\s*\(CONFIG_[A-Z0-9_]\+\)\s*=\s*[nN]/d' config.h
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@sed -i 's/^\s*\(CONFIG_[A-Z0-9_]\+\)\s*=\s*[yY]/#define \1/g' config.h
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clean:
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@echo ' CLEAN config.h'
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$(V)rm -f config.h
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@echo ' CLEAN *.o'
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$(V)rm -f $(KOBJS)
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@echo ' CLEAN .*.d'
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$(V)rm -f $(DEPENDENCY_FILES)
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@echo ' CLEAN aedrix-kernel.elf'
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$(V)rm -f aedrix-kernel.elf
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@echo ' CLEAN aedrix-kernel.objdump'
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$(V)rm -f aedrix-kernel.objdump
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@echo ' CLEAN aedrix-kernel.img'
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$(V)rm -f aedrix-kernel.img
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boot: aedrix-kernel.img
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$(V)qemu-system-arm -m 1024 -M vexpress-a9 -kernel aedrix-kernel.img -serial stdio
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boot-gdb: aedrix-kernel.img
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$(V)qemu-system-arm -m 1024 -M vexpress-a9 -kernel aedrix-kernel.img -serial stdio -S -s
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DEPENDENCY_FILES = $(foreach file,$(KOBJS), $(dir $(file)).$(notdir $(basename $(file))).d)
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-include $(DEPENDENCY_FILES)
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