banan-os/kernel/Makefile

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DEFAULT_HOST!=../default-host.sh
HOST?=DEFAULT_HOST
HOSTARCH!=../target-triplet-to-arch.sh $(HOST)
CFLAGS?=-O2 -g
CPPFLAGS?=
LDFLAGS?=
LIBS?=
DESTDIR?=
PREFIX?=/usr/local
EXEC_PREFIX?=$(PREFIX)
BOOTDIR?=$(EXEC_PREFIX)/boot
INCLUDEDIR?=$(PREFIX)/include
CFLAGS:=$(CFLAGS) -D__is_kernel -Iinclude -fstack-protector -ffreestanding -Wall -Wextra -Wno-unused-function
CPPFLAGS:=$(CPPFLAGS)
LDFLAGS:=$(LDFLAGS)
LIBS:=$(LIBS) -nostdlib -lk -lgcc
ARCHDIR=arch/$(HOSTARCH)
include $(ARCHDIR)/make.config
CFLAGS:=$(CFLAGS) $(KERNEL_ARCH_CFLAGS)
CPPFLAGS:=$(CPPFLAGS) $(KERNEL_ARCH_CPPFLAGS)
LDFLAGS:=$(LDFLAGS) $(KERNEL_ARCH_LDFLAGS)
LIBS:=$(LIBS) $(KERNEL_ARCH_LIBS)
BUILDDIR=$(abspath build)
KERNEL_OBJS=\
$(KERNEL_ARCH_OBJS) \
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kernel/GDT.o \
kernel/IDT.o \
kernel/kernel.o \
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kernel/kmalloc.o \
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kernel/SSP.o \
OBJS=\
$(ARCHDIR)/crti.o \
$(ARCHDIR)/crtbegin.o \
$(KERNEL_OBJS) \
$(ARCHDIR)/crtend.o \
$(ARCHDIR)/crtn.o \
LINK_LIST=\
$(LDFLAGS) \
$(ARCHDIR)/crti.o \
$(ARCHDIR)/crtbegin.o \
$(KERNEL_OBJS) \
$(LIBS) \
$(ARCHDIR)/crtend.o \
$(ARCHDIR)/crtn.o \
.PHONY: all always clean install install-headers install-kernel
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.SUFFIXES: .o .cpp .S
all: banan-os.kernel
banan-os.kernel: always $(OBJS) $(ARCHDIR)/linker.ld
cd $(BUILDDIR) && $(CC) -T ../$(ARCHDIR)/linker.ld -o banan-os.kernel $(CFLAGS) $(LINK_LIST)
cd $(BUILDDIR) && grub-file --is-x86-multiboot banan-os.kernel
$(ARCHDIR)/crtbegin.o $(ARCHDIR)/crtend.o:
OBJ=`$(CC) $(CFLAGS) $(LDFLAGS) -print-file-name=$(@F)` && cp "$$OBJ" $(BUILDDIR)/$@
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.cpp.o:
$(CXX) -MD -c $< -o $(BUILDDIR)/$@ $(CFLAGS) $(CPPFLAGS)
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.S.o:
$(CC) -MD -c $< -o $(BUILDDIR)/$@ $(CFLAGS)
always:
mkdir -p $(BUILDDIR)/arch/i386
mkdir -p $(BUILDDIR)/kernel
clean:
rm -rf $(BUILDDIR)
install: install-headers install-kernel
install-headers:
mkdir -p $(DESTDIR)$(INCLUDEDIR)
cp -R --preserve=timestamps include/. $(DESTDIR)$(INCLUDEDIR)/.
install-kernel: banan-os.kernel
mkdir -p $(DESTDIR)$(BOOTDIR)
cp $(BUILDDIR)/banan-os.kernel $(DESTDIR)$(BOOTDIR)
-include $(OBJS:.o=.d)