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GNUmakefile.in
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# Set some defaults first
override COOL_PROMPT := printf '[\e[1;94m%s\e[m] \e[1;32m%s\e[m\n'
override SOURCE_DIR := @srcdir@
override BUILD_DIR := @BUILDDIR@
override ARCH_DIR := @srcdir@/arch/@ARCH@
override LAI_DIR := @srcdir@/third_party/lai
override VERSION := @PACKAGE_VERSION@
override ECHFS := @srcdir@/third_party/echfs/echfs-utils
override EXTENSIONS_DIR := @srcdir@/extensions
# Do a verbose build only when requested
ifeq ($(V),)
.SILENT:
endif
# Import in variables from automake
override CC := @CC@
override LD := @LD@
override AR := @AR@
override KERNEL_CFLAGS := @KERNEL_CFLAGS@
override KERNEL_LDFLAGS := @KERNEL_LDFLAGS@
override ARCH := @ARCH@
HARDENED_BUILD := @HARDENED_BUILD@
LIMINE_EARLYCONSOLE := @LIMINE_EARLYCONSOLE@
PREFIX := @prefix@
# Set compiler flags
override CREALFLAGS := $(KERNEL_CFLAGS) \
-std=gnu11 \
-ffreestanding \
-fpic \
-Wno-attributes \
-MMD \
-mno-red-zone \
-fno-omit-frame-pointer \
-fms-extensions
override LDREALFLAGS := $(KERNEL_LDFLAGS) -zmax-page-size=0x1000 -nostdlib
override CREALFLAGS += -I . \
-I $(SOURCE_DIR)/include \
-I $(LAI_DIR)/include \
-I $(ARCH_DIR)/include
# Enable a hardened build/earlyconsole if requested
ifeq ($(HARDENED_BUILD), yes)
override CREALFLAGS += -DSECURE_BUILD -fsanitize=undefined -fstack-protector
else
override CREALFLAGS += -fno-stack-protector
endif
ifeq ($(LIMINE_EARLYCONSOLE), yes)
override CREALFLAGS += -DLIMINE_EARLYCONSOLE
endif
# Find all the source code
override KERNEL_SOURCE := $(shell find $(SOURCE_DIR)/src -name '*.c')
override LAI_SOURCE := $(shell find $(LAI_DIR) -name '*.c')
override ARCH_SOURCE := $(shell find $(ARCH_DIR) -name '*.c')
ifeq ($(ARCH), x86_64)
override ARCH_ASSEMBLY_SOURCE := $(shell find $(ARCH_DIR) -name *.asm)
override ARCH_REALMODE_SOURCE := $(shell find $(ARCH_DIR) -name *.real)
override CREALFLAGS += -mno-80387 \
-mno-mmx \
-mno-3dnow \
-mno-sse \
-mno-sse2
else ifeq ($(ARCH), aarch64)
override ARCH_ASSEMBLY_SOURCE := $(shell find $(ARCH_DIR)/src -name '*.S')
override CREALFLAGS += -mgeneral-regs-only
endif
# Create all the objects
override KERNEL := $(BUILD_DIR)/vr9x.elf
override INITRD := $(BUILD_DIR)/initrd.img
override IMAGE := $(BUILD_DIR)/ninex.hdd
override LAI_LIB := $(BUILD_DIR)/third_party/lai/liblai.a
override OBJECTS := $(addprefix $(BUILD_DIR), $(patsubst %.c, %.o, $(KERNEL_SOURCE:$(SOURCE_DIR)%=%)))
override LAI_OBJECTS := $(addprefix $(BUILD_DIR), $(patsubst %.c, %.o, $(LAI_SOURCE:$(SOURCE_DIR)%=%)))
ifeq ($(ARCH), x86_64)
override ARCH_LIB := $(BUILD_DIR)/arch/libx86_64.a
override ARCH_OBJECTS := $(addprefix $(BUILD_DIR), $(patsubst %.c, %.o, $(ARCH_SOURCE:$(SOURCE_DIR)%=%)))
override ARCH_OBJECTS += $(addprefix $(BUILD_DIR), $(patsubst %.asm, %.o, $(ARCH_ASSEMBLY_SOURCE:$(SOURCE_DIR)%=%)))
override ARCH_BLOBS := $(addprefix $(BUILD_DIR), $(patsubst %.real, %.bin, $(ARCH_REALMODE_SOURCE:$(SOURCE_DIR)%=%)))
else ifeq ($(ARCH), aarch64)
override ARCH_LIB := $(BUILD_DIR)/arch/libaarch64.a
override ARCH_OBJECTS := $(addprefix $(BUILD_DIR)/arch/,$(patsubst %.c, %.o, $(ARCH_SOURCE))) \
$(addprefix $(BUILD_DIR)/arch/,$(patsubst %.S, %.o, $(ARCH_ASSEMBLY_SOURCE)))
endif
# Build the kernel by default
.PHONY: all phony_target clean distclean maintainer-clean
all: phony_target
# Targets for compiling the kernel
$(BUILD_DIR)/arch/@ARCH@/%.o: $(ARCH_DIR)/%.c
@$(COOL_PROMPT) " CC " $<
mkdir -p $(@D)
$(CC) $(CREALFLAGS) -DSMP_INCLUDE_DIR=\"$(BUILD_DIR)/arch/@ARCH@\" -c -o $@ $<
$(BUILD_DIR)/%.o: $(SOURCE_DIR)/%.c
@$(COOL_PROMPT) " CC " $<
mkdir -p $(@D)
$(CC) $(CREALFLAGS) -c -o $@ $<
ifeq ($(ARCH), x86_64)
$(BUILD_DIR)/arch/x86_64/%.bin: $(ARCH_DIR)/%.real
$(COOL_PROMPT) "REAL" $<
mkdir -p $(@D)
nasm -f bin -i @srcdir@ -o $@ $<
$(BUILD_DIR)/arch/x86_64/%.o: $(ARCH_DIR)/%.asm
$(COOL_PROMPT) "ASM " $<
mkdir -p $(@D)
nasm -f elf64 -g -F dwarf -i @srcdir@ -o $@ $<
$(ARCH_LIB): $(ARCH_BLOBS) $(ARCH_OBJECTS)
$(COOL_PROMPT) "LIB " $@
mkdir -p $(@D)
$(AR) rcs $@ $(ARCH_OBJECTS)
endif
$(LAI_LIB): $(LAI_OBJECTS)
$(COOL_PROMPT) "LIB " $@
mkdir -p $(@D)
$(AR) rcs $@ $(LAI_OBJECTS)
# Kernel Drivers (aka Extensions)
include $(EXTENSIONS_DIR)/build.mk
$(KERNEL): $(LAI_LIB) $(ARCH_LIB) $(OBJECTS)
$(LD) $(LDREALFLAGS) -pie -T $(ARCH_DIR)/kernel.ld -o $@ $(OBJECTS) $(LAI_LIB) $(ARCH_LIB)
@@srcdir@/tools/symbols.sh kern_symbols.c $@
$(CC) $(CREALFLAGS) -o kern_symbols.o -c kern_symbols.c
$(COOL_PROMPT) "LINK" $@
$(LD) $(LDREALFLAGS) -pie -T $(ARCH_DIR)/kernel.ld -o $@ $(OBJECTS) $(LAI_LIB) $(ARCH_LIB) kern_symbols.o
# A target for building the kernel and drivers in one go
phony_target: $(REQUIRED_EXTENSIONS) $(KERNEL)
# Initrd (contains drivers, and might one day contiain the init)
$(INITRD): $(REQUIRED_EXTENSIONS)
$(COOL_PROMPT) "GEN " $@
mkdir initrd && cp $(REQUIRED_EXTENSIONS) initrd
tar -cf initrd.tar initrd &> /dev/null
gzip initrd.tar && mv initrd.tar.gz $(INITRD)
rm -rf initrd
# Header dependencies
override HEADER_DEPS := $(addprefix $(BUILD_DIR), $(patsubst %.c, %.d, $(KERNEL_SOURCE:$(SOURCE_DIR)%=%)))
override HEADER_DEPS += $(addprefix $(BUILD_DIR), $(patsubst %.c, %.d, $(LAI_SOURCE:$(SOURCE_DIR)%=%)))
override HEADER_DEPS += $(addprefix $(BUILD_DIR), $(patsubst %.c, %.d, $(ARCH_SOURCE:$(SOURCE_DIR)%=%)))
override HEADER_DEPS += $(EXT_HDR_DEPS)
-include $(HEADER_DEPS)
# Cleaning targets
clean: extensions_clean
rm -rf $(BUILD_DIR)/kern_symbols.* $(OBJECTS) $(LAI_OBJECTS) $(HEADER_DEPS)
rm -rf $(ARCH_OBJECTS) $(ARCH_BLOBS) $(KERNEL) $(LAI_LIB) $(ARCH_LIB)
distclean: clean
rm -rf $(BUILD_DIR)/{GNUmakefile,config.log,config.status,config.h} $(IMAGE) $(INITRD)
maintainer-clean: distclean
rm -rf $(SOURCE_DIR)/configure $(SOURCE_DIR)/install-sh $(SOURCE_DIR)/autom4te*
rm -rf $(SOURCE_DIR)/*'~' $(SOURCE_DIR)/third_party
# Installation/Distribution targets
.PHONY: install install-strip dist
install: $(KERNEL) $(REQUIRED_EXTENSIONS)
@INSTALL@ -d "$(DESTDIR)$(PREFIX)/kernel"
@INSTALL@ -s $(KERNEL) "$(DESTDIR)$(PREFIX)/kernel"
@INSTALL@ -d "$(DESTDIR)/lib/"
@INSTALL@ -t "$(DESTDIR)/lib/" $(REQUIRED_EXTENSIONS)
install-strip: $(KERNEL) $(REQUIRED_EXTENSIONS)
@INSTALL@ -d "$(DESTDIR)$(PREFIX)/kernel"
@INSTALL@ -s $(KERNEL) "$(DESTDIR)$(PREFIX)/kernel"
@INSTALL@ -d "$(DESTDIR)/lib/"
@INSTALL@ -t "$(DESTDIR)/lib/" -s $(REQUIRED_EXTENSIONS)
dist:
rm -rf "ninex-$(VERSION)"
mkdir -p "ninex-$(VERSION)"
cp -r @srcdir@/.git "ninex-$(VERSION)"/
cd "ninex-$(VERSION)" && git checkout .
cd "ninex-$(VERSION)" && NOCONFIGURE=yes ./autogen.sh
rm -rf "ninex-$(VERSION)/.git"
rm -rf "ninex-$(VERSION)/autom4te.cache"
tar -zcf "ninex-$(VERSION).tar.gz" "ninex-$(VERSION)"
rm -rf "ninex-$(VERSION)"
# Kernel testing/running targets
$(IMAGE): $(KERNEL) $(INITRD) $(SOURCE_DIR)/misc/limine.cfg
$(COOL_PROMPT) "GEN " $@
dd if=/dev/zero of=$(IMAGE) bs=1M count=32
parted -s $(IMAGE) mklabel msdos
parted -s $(IMAGE) mkpart primary 2048s 100%
@$(ECHFS) -m -p0 $(IMAGE) quick-format 512
@$(ECHFS) -m -p0 $(IMAGE) import $(KERNEL) /boot/kernel/vr9x.elf
@$(ECHFS) -m -p0 $(IMAGE) import $(INITRD) /boot/initrd.img
@$(ECHFS) -m -p0 $(IMAGE) import @srcdir@/misc/limine.cfg /boot/limine.cfg
@$(ECHFS) -m -p0 $(IMAGE) import @srcdir@/third_party/limine/limine.sys \
/boot/limine.sys
$(SOURCE_DIR)/third_party/limine/limine-deploy $(IMAGE)
.PHONY: run run-kvm
override QEMU_BASE_FLAGS += -smp `nproc` -m 1G -M q35 -drive file=$(IMAGE),if=none,id=nvmdev -device nvme,serial=fa01fa02,drive=nvmdev -debugcon stdio
run: $(IMAGE)
qemu-system-x86_64 $(QEMU_BASE_FLAGS) -cpu max,+rdtscp
run-kvm: $(IMAGE)
qemu-system-x86_64 $(QEMU_BASE_FLAGS) --enable-kvm -cpu max,+invtsc