2019-04-01 01:40:42 +00:00
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DEFAULT_HOST!=i686-elf
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HOST?=DEFAULT_HOST
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HOSTARCH!=i386
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CFLAGS?= -O2 -g
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CPPFLAGS?=
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LDFLAGS?=
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LIBS?=
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DESTDIR?=
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PREFIX?=/usr/local
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EXEC_PREFIX?=$(PREFIX)
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BOOTDIR?=$(EXEC_PREFIX)/boot
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INCLUDEDIR?=$(PREFIX)/include
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CFLAGS:=$(CFLAGS) -ffreestanding -Wall -Wextra
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CPPFLAGS:=$(CPPFLAGS) -D__is_kernel -Iinclude
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LDFLAGS:=$(LDFLAGS)
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LIBS:=$(LIBS) -nostdlib -lk -lgcc
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ARCHDIR=arch/$(HOSTARCH)
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include $(ARCHDIR)/make.config
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CFLAGS:=$(CFLAGS) $(KERNEL_ARCH_CFLAGS)
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CPPFLAGS:=$(CPPFLAGS) $(KERNEL_ARCH_CPPFLAGS)
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LDFLAGS:=$(LDFLAGS) $(KERNEL_ARCH_LDFLAGS)
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LIBS:=$(LIBS) $(KERNEL_ARCH_LIBS)
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KERNEL_OBJS=\
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$(KERNEL_ARCH_OBJS)\
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kernel/kernel.o
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OBJS=\
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$(ARCHDIR)/crti.o \
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$(ARCHDIR)/crtbegin.o \
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$(KERNEL_OBJS) \
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$(ARCHDIR)/crtend.o \
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$(ARCHDIR)/crtn.o
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LINK_LIST=\
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$(LDFLAGS) \
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$(ARCHDIR)/crti.o \
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$(ARCHDIR)/crtbegin.o \
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$(KERNEL_OBJS) \
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$(LIBS) \
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$(ARCHDIR)/crtend.o \
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$(ARCHDIR)/crtn.o
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.PHONY: all clean install install-headers install-kernel
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.SUFFIXES: .o .c .s
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all: red.kernel
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red.kernel: $(OBJS) $(ARCHDIR)/linker.ld
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$(CC) -T $(ARCHDIR)/linker.ld -o $@ $(CFLAGS) $(LINK_LIST)
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$(ARCHDIR)/crtbegin.o $(ARCHDIR)/crtend.o:
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OBJ=`$(CC) $(CFLAGS) $(LDFLAGS) -print-file-name=$(@F)` && cp "$$OBJ" $@
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.c.o:
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$(CC) -MD -c $< -o $@ -std=gnull $(CFLAGS) $(CPPFLAGS)
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.s.o:
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$(CC) -MD -c $< -o $@ $(CFLAGS) $(CPPFLAGS)
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clean:
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rm -f red.kernel
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rm -f $(OBJS) *.0 */*.o */*/*.o
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rm -f $(OBJS:.o=.d) *.d */*.d */*/*.d
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install: install-headers install-kernel gen-iso
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install-headers:
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mkdir -p $(DESTDIR)$(INCLUDEDIR)
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cp -R --preserve=timestamps include/. $(DESTDIR)$(INCLUDEDIR)/.
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install-kernel: red.kernel
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mkdir -p $(DESTDIR)$(BOOTDIR)
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cp red.kernel $(DESTDIR)$(BOOTDIR)
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gen-iso:
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rm -f red.iso \
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cp red.kernel iso/boot/kernel.elf \
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genisoimage -R\
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-b boot/grub/stage2_eltorito\
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-no-emul-boot\
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-A ProjectRED\
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-input-charset utf8\
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-quiet
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-boot-info-table\
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-o red.iso\
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iso
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-include $(OBJS:.o=.d)
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