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CC=i686-elf-gcc
INCLUDE?=-Iinclude
CFLAGS?=-O2 -ffreestanding -std=gnu11
LDFLAGS?=-nostdlib
LIBS?=-lgcc
# -- Do not edit below this line --
VERSION:="$(shell git describe --abbrev=4 --dirty --always --tags)"
INCLUDE:=$(INCLUDE)
CFLAGS:=$(CFLAGS) -Wall -Wextra -DVERSION=\"$(VERSION)\" -ggdb
LDFLAGS:=$(LDFLAGS)
LIBS:=$(LIBS)
ARCHDIR=arch/i386
include $(ARCHDIR)/make.config
CFLAGS:=$(CFLAGS) $(KERNEL_ARCH_CFLAGS)
LDFLAGS:=$(LDFLAGS) $(KERNEL_ARCH_LDFLAGS)
LIBS:=$(LIBS) $(KERNEL_ARCH_LIBS)
KERNEL=vmbox
KERNEL_OBJS=$(KERNEL_ARCH_OBJS) \
kernel/init.o \
kernel/string.o \
kernel/io.o \
OBJS=$(ARCHDIR)/boot/crti.o \
$(ARCHDIR)/crtbegin.o \
$(KERNEL_OBJS) \
$(ARCHDIR)/crtend.o \
$(ARCHDIR)/boot/crtn.o \
LINK_LIST=$(LDFLAGS) \
$(ARCHDIR)/boot/crti.o \
$(ARCHDIR)/crtbegin.o \
$(KERNEL_OBJS) \
$(LIBS) \
$(ARCHDIR)/crtend.o \
$(ARCHDIR)/boot/crtn.o \
.PHONY: all clean install install-headers install-kernel
.SUFFIXES: .o .c .s
all: $(KERNEL)
$(KERNEL): $(OBJS) $(ARCHDIR)/linker.ld
@$(CC) -T $(ARCHDIR)/linker.ld -o $@ $(LINK_LIST)
@echo [LD] $@
$(ARCHDIR)/crtbegin.o $(ARCHDIR)/crtend.o:
@OBJ=`$(CC) $(CFLAGS) $(LDFLAGS) -print-file-name=$(@F)` && cp "$$OBJ" $@
.c.o:
@$(CC) -MD -c $< -o $@ $(CFLAGS) $(INCLUDE)
@echo [CC] $@
.s.o:
@$(CC) -MD -c $< -o $@ $(CFLAGS) $(INCLUDE)
@echo [AS] $@
clean:
$(RM) $(KERNEL)
$(RM) $(OBJS) *.o */*.o */*/*.o
$(RM) $(OBJS:.o=.d) *.d */*.d */*/*.d
install: install-headers install-kernel
install-headers:
mkdir -p $(DESTDIR)$(INCLUDEDIR)
cp -R --preserve-timestamps include/. $(DESTDIR)$(INCLUDEDIR)/.
install-kernel: $(KERNEL)
mkdir -p $(DESTDIR)$(BOOTDIR)
cp $(KERNEL) $(DESTDIR)$(BOOTDIR)
-include $(OBJS:.o=.d)
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