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Makefile
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VERSION = 0
PATCHLEVEL = 0
SUBLEVEL = 1
EXTRAVERSION = Nautilus
NAME=Nautilus
ISO_NAME:=nautilus.iso
BIN_NAME:=nautilus.bin
SYM_NAME:=nautilus.syms
SEC_NAME:=nautilus.secs
BC_NAME:=nautilus.bc
LL_NAME:=nautilus.ll
# *DOCUMENTATION*
# To see a list of typical targets execute "make help"
# More info can be located in ./README
# Comments in this file are targeted only to the developer, do not
# expect to learn how to build the kernel reading this file.
# Do not print "Entering directory ..."
MAKEFLAGS += --no-print-directory
# We are using a recursive build, so we need to do a little thinking
# to get the ordering right.
#
# Most importantly: sub-Makefiles should only ever modify files in
# their own directory. If in some directory we have a dependency on
# a file in another dir (which doesn't happen often, but it's often
# unavoidable when linking the built-in.o targets which finally
# turn into nautilus), we will call a sub make in that other dir, and
# after that we are sure that everything which is in that other dir
# is now up to date.
#
# The only cases where we need to modify files which have global
# effects are thus separated out and done before the recursive
# descending is started. They are now explicitly listed as the
# prepare rule.
# To put more focus on warnings, be less verbose as default
# Use 'make V=1' to see the full commands
ifdef V
ifeq ("$(origin V)", "command line")
KBUILD_VERBOSE = $(V)
endif
endif
ifndef KBUILD_VERBOSE
KBUILD_VERBOSE = 0
endif
# Call sparse as part of compilation of C files
# Use 'make C=1' to enable sparse checking
ifdef C
ifeq ("$(origin C)", "command line")
KBUILD_CHECKSRC = $(C)
endif
endif
ifndef KBUILD_CHECKSRC
KBUILD_CHECKSRC = 0
endif
# Use make M=dir to specify directory of external module to build
# Old syntax make ... SUBDIRS=$PWD is still supported
# Setting the environment variable KBUILD_EXTMOD take precedence
ifdef SUBDIRS
KBUILD_EXTMOD ?= $(SUBDIRS)
endif
ifdef M
ifeq ("$(origin M)", "command line")
KBUILD_EXTMOD := $(M)
endif
endif
# kbuild supports saving output files in a separate directory.
# To locate output files in a separate directory two syntaxes are supported.
# In both cases the working directory must be the root of the kernel src.
# 1) O=
# Use "make O=dir/to/store/output/files/"
#
# 2) Set KBUILD_OUTPUT
# Set the environment variable KBUILD_OUTPUT to point to the directory
# where the output files shall be placed.
# export KBUILD_OUTPUT=dir/to/store/output/files/
# make
#
# The O= assignment takes precedence over the KBUILD_OUTPUT environment
# variable.
# KBUILD_SRC is set on invocation of make in OBJ directory
# KBUILD_SRC is not intended to be used by the regular user (for now)
ifeq ($(KBUILD_SRC),)
# OK, Make called in directory where kernel src resides
# Do we want to locate output files in a separate directory?
ifdef O
ifeq ("$(origin O)", "command line")
KBUILD_OUTPUT := $(O)
endif
endif
# That's our default target when none is given on the command line
PHONY := _all
_all:
ifneq ($(KBUILD_OUTPUT),)
# Invoke a second make in the output directory, passing relevant variables
# check that the output directory actually exists
saved-output := $(KBUILD_OUTPUT)
KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd)
$(if $(KBUILD_OUTPUT),, \
$(error output directory "$(saved-output)" does not exist))
PHONY += $(MAKECMDGOALS)
$(filter-out _all,$(MAKECMDGOALS)) _all:
$(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \
KBUILD_SRC=$(CURDIR) \
KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile $@
# Leave processing to above invocation of make
skip-makefile := 1
endif # ifneq ($(KBUILD_OUTPUT),)
endif # ifeq ($(KBUILD_SRC),)
# We process the rest of the Makefile if this is the final invocation of make
ifeq ($(skip-makefile),)
# If building an external module we do not care about the all: rule
# but instead _all depend on modules
PHONY += all
_all: all
srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR))
TOPDIR := $(srctree)
# FIXME - TOPDIR is obsolete, use srctree/objtree
objtree := $(CURDIR)
src := $(srctree)
obj := $(objtree)
VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD))
export srctree objtree VPATH TOPDIR
# SUBARCH tells the usermode build what the underlying arch is. That is set
# first, and if a usermode build is happening, the "ARCH=um" on the command
# line overrides the setting of ARCH below. If a native build is happening,
# then ARCH is assigned, getting whatever value it gets normally, and
# SUBARCH is subsequently ignored.
SUBARCH := $(shell uname -m | sed -e s/i.86/i386/ )
# Cross compiling and selecting different set of gcc/bin-utils
# ---------------------------------------------------------------------------
#
# When performing cross compilation for other architectures ARCH shall be set
# to the target architecture. (See arch/* for the possibilities).
# ARCH can be set during invocation of make:
# make ARCH=ia64
# Another way is to have ARCH set in the environment.
# The default ARCH is the host where make is executed.
# CROSS_COMPILE specify the prefix used for all executables used
# during compilation. Only gcc and related bin-utils executables
# are prefixed with $(CROSS_COMPILE).
# CROSS_COMPILE can be set on the command line
# make CROSS_COMPILE=ia64-linux-
# Alternatively CROSS_COMPILE can be set in the environment.
# Default value for CROSS_COMPILE is not to prefix executables
# Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile
ARCH ?= $(SUBARCH)
CROSS_COMPILE ?=
#CROSS_COMPILE ?= /home/kyle/opt/cross/bin/x86_64-elf-
# Architecture as present in compile.h
UTS_MACHINE := $(ARCH)
# SHELL used by kbuild
CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
else if [ -x /bin/bash ]; then echo /bin/bash; \
else echo sh; fi ; fi)
HOSTCC := gcc
HOSTCXX := g++
HOSTCFLAGS = -Wall -Wstrict-prototypes -fomit-frame-pointer \
-Wno-unused -Wno-format-security -U_FORTIFY_SOURCE
HOSTCXXFLAGS = -O
# Decide whether to build built-in, modular, or both.
# Normally, just do built-in.
KBUILD_MODULES :=
KBUILD_BUILTIN := 1
# If we have only "make modules", don't compile built-in objects.
# When we're building modules with modversions, we need to consider
# the built-in objects during the descend as well, in order to
# make sure the checksums are uptodate before we record them.
ifeq ($(MAKECMDGOALS),modules)
KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1)
endif
# If we have "make <whatever> modules", compile modules
# in addition to whatever we do anyway.
# Just "make" or "make all" shall build modules as well
ifneq ($(filter all _all modules,$(MAKECMDGOALS)),)
KBUILD_MODULES := 1
endif
ifeq ($(MAKECMDGOALS),)
KBUILD_MODULES := 1
endif
export KBUILD_MODULES KBUILD_BUILTIN
export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD
# Beautify output
# ---------------------------------------------------------------------------
#
# Normally, we echo the whole command before executing it. By making
# that echo $($(quiet)$(cmd)), we now have the possibility to set
# $(quiet) to choose other forms of output instead, e.g.
#
# quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@
# cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $<
#
# If $(quiet) is empty, the whole command will be printed.
# If it is set to "quiet_", only the short version will be printed.
# If it is set to "silent_", nothing wil be printed at all, since
# the variable $(silent_cmd_cc_o_c) doesn't exist.
#
# A simple variant is to prefix commands with $(Q) - that's useful
# for commands that shall be hidden in non-verbose mode.
#
# $(Q)ln $@ :<
#
# If KBUILD_VERBOSE equals 0 then the above command will be hidden.
# If KBUILD_VERBOSE equals 1 then the above command is displayed.
ifeq ($(KBUILD_VERBOSE),1)
quiet =
Q =
else
quiet=quiet_
Q = @
endif
# If the user is running make -s (silent mode), suppress echoing of
# commands
ifneq ($(findstring s,$(MAKEFLAGS)),)
quiet=silent_
endif
export quiet Q KBUILD_VERBOSE
# Look for make include files relative to root of kernel src
MAKEFLAGS += --include-dir=$(srctree)
# We need some generic definitions
include $(srctree)/scripts/Kbuild.include
# For maximum performance (+ possibly random breakage, uncomment
# the following)
#MAKEFLAGS += -rR
# Make variables (CC, etc...)
AR = $(CROSS_COMPILE)ar
NM = $(CROSS_COMPILE)nm
STRIP = $(CROSS_COMPILE)strip
OBJCOPY = $(CROSS_COMPILE)objcopy
OBJDUMP = $(CROSS_COMPILE)objdump
CPP = $(CC) -E
GRUBMKRESCUE = $(CROSS_COMPILE)grub-mkrescue
AWK = awk
GENKSYMS = scripts/genksyms/genksyms
DEPMOD = /sbin/depmod
KALLSYMS = scripts/kallsyms
PERL = perl
CHECK = sparse
CFLAGS_KERNEL =
AFLAGS_KERNEL =
# Use NAUT_INCLUDE when you must reference the include/ directory.
# Needed to be compatible with the O= option
NAUT_INCLUDE := -D__NAUTILUS__ -Iinclude \
$(if $(KBUILD_SRC),-I$(srctree)/include) \
-include include/autoconf.h
CPPFLAGS := $(NAUT_INCLUDE) -D__NAUTILUS__
#
# Include .config early so that we have access to the toolchain-related options
#
ifeq (,$(wildcard .config))
NAUT_CONFIG_USE_GCC=1
NAUT_CONFIG_USE_CLANG=0
NAUT_CONFIG_USE_WLLVM=0
NAUT_CONFIG_COMPILER_PREFIX=
NAUT_CONFIG_COMPILER_SUFFIX=
else
include .config
endif
COMPILER_PREFIX := $(patsubst "%",%,$(NAUT_CONFIG_COMPILER_PREFIX))
COMPILER_SUFFIX := $(patsubst "%",%,$(NAUT_CONFIG_COMPILER_SUFFIX))
#
# Note we use the system linker in all cases
#
ifdef NAUT_CONFIG_USE_CLANG
AS = $(CROSS_COMPILE)$(COMPILER_PREFIX)llvm-as$(COMPILER_SUFFIX)
LD = $(CROSS_COMPILE)ld
CC = $(CROSS_COMPILE)$(COMPILER_PREFIX)clang$(COMPILER_SUFFIX)
CXX = $(CROSS_COMPILE)$(COMPILER_PREFIX)clang++$(COMPILER_SUFFIX)
endif
ifdef NAUT_CONFIG_USE_WLLVM
AS = $(CROSS_COMPILE)$(COMPILER_PREFIX)llvm-as$(COMPILER_SUFFIX)
LD = $(CROSS_COMPILE)ld
CC = $(CROSS_COMPILE)$(COMPILER_PREFIX)wllvm$(COMPILER_SUFFIX)
CXX = $(CROSS_COMPILE)$(COMPILER_PREFIX)wllvm++$(COMPILER_SUFFIX)
endif
ifdef NAUT_CONFIG_USE_GCC
AS = $(CROSS_COMPILE)$(COMPILER_PREFIX)as$(COMPILER_SUFFIX)
LD = $(CROSS_COMPILE)ld
CC = $(CROSS_COMPILE)$(COMPILER_PREFIX)gcc$(COMPILER_SUFFIX)
CXX = $(CROSS_COMPILE)$(COMPILER_PREFIX)g++$(COMPILER_SUFFIX)
endif
COMMON_FLAGS :=-fno-omit-frame-pointer \
-ffreestanding \
-fno-stack-protector \
-fno-strict-aliasing \
-fno-strict-overflow \
-mno-red-zone \
-mcmodel=large
ifdef NAUT_CONFIG_USE_GCC
COMMON_FLAGS += -O2 -fno-delete-null-pointer-checks
GCCVERSIONGTE6 := $(shell expr `$(CC) -dumpversion | cut -f1 -d.` \>= 6)
ifeq "$(GCCVERSIONGTE6)" "1"
COMMON_FLAGS += -no-pie -fno-pic -fno-PIC -fno-PIE
endif
# recent versions of gcc (6+) have position independence
# as a default, and this breaks us
endif
ifdef NAUT_CONFIG_USE_CLANG
COMMON_FLAGS += -O2 # -fno-delete-null-pointer-checks
# -O3 will also work - PAD
endif
ifdef NAUT_CONFIG_USE_WLLVM
COMMON_FLAGS += -O2 # -fno-delete-null-pointer-checks
# -O3 will also work - PAD
endif
#
# Add these for more recent compilers to avoid having
# the compiler insert surprise ud2 instructions for you should
# you derefence address zero
#
# -fno-isolate-erroneous-paths-attribute \
# -fno-isolate-erroneous-paths-dereference \
#
#
#
# For testing, optionally add -fsanitize=undefined
#
#
#
CXXFLAGS := $(COMMON_FLAGS) \
-fno-exceptions \
-fno-rtti
CFLAGS:= $(COMMON_FLAGS) \
-Wall \
-Wno-unused-function \
-Wno-unused-variable \
-fno-common \
-Wstrict-overflow=5
# -Wextra \
# -Wpedantic \
#
# if we're using Clang, we can't use these
ifdef NAUT_CONFIG_USE_GCC
CFLAGS += -std=gnu99 \
-Wno-frame-address \
$(call cc-option, -Wno-unused-but-set-variable,)
endif
ifeq ($(call cc-option-yn, -fgnu89-inline),y)
CFLAGS += -fgnu89-inline
endif
# NOTE: We MUST have max-page-size set to this here. Otherwise things
# go off the rails for the Grub multiboot setup because the linker
# does strange things...
LDFLAGS := -z max-page-size=0x1000
AFLAGS :=
# Read KERNELRELEASE from .kernelrelease (if it exists)
#KERNELRELEASE = $(shell cat .kernelrelease 2> /dev/null)
#KERNELVERSION = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)
export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION \
ARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC CXX\
CPP AR NM STRIP OBJCOPY OBJDUMP MAKE AWK GENKSYMS PERL UTS_MACHINE \
HOSTCXX HOSTCXXFLAGS CHECK \
export CPPFLAGS NOSTDINC_FLAGS NAUT_INCLUDE OBJCOPYFLAGS LDFLAGS \
export CFLAGS CXXFLAGS CFLAGS_KERNEL \
export AFLAGS AFLAGS_KERNEL \
# When compiling out-of-tree modules, put MODVERDIR in the module
# tree rather than in the kernel tree. The kernel tree might
# even be read-only.
export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions
# Files to ignore in find ... statements
RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o -name CVS -o -name .pc -o -name .hg -o -name .git \) -prune -o
export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn --exclude CVS --exclude .pc --exclude .hg --exclude .git
# ===========================================================================
# Rules shared between *config targets and build targets
# Basic helpers built in scripts/
PHONY += scripts_basic
scripts_basic:
$(Q)$(MAKE) $(build)=scripts/basic
# To avoid any implicit rule to kick in, define an empty command.
scripts/basic/%: scripts_basic ;
PHONY += outputmakefile
# outputmakefile generates a Makefile in the output directory, if using a
# separate output directory. This allows convenient use of make in the
# output directory.
outputmakefile:
ifneq ($(KBUILD_SRC),)
$(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
$(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)
endif
# To make sure we do not include .config for any of the *config targets
# catch them early, and hand them over to scripts/kconfig/Makefile
# It is allowed to specify more targets when calling make, including
# mixing *config targets and build targets.
# For example 'make oldconfig all'.
# Detect when mixed targets is specified, and make a second invocation
# of make so .config is not included in this case either (for *config).
no-dot-config-targets := clean mrproper distclean \
cscope TAGS tags help %docs check%
config-targets := 0
mixed-targets := 0
dot-config := 1
ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
dot-config := 0
endif
endif
ifeq ($(KBUILD_EXTMOD),)
ifneq ($(filter %config,$(MAKECMDGOALS)),)
config-targets := 1
ifneq ($(filter-out %config,$(MAKECMDGOALS)),)
mixed-targets := 1
endif
endif
endif
ifeq ($(mixed-targets),1)
# ===========================================================================
# We're called with mixed targets (*config and build targets).
# Handle them one by one.
%:: FORCE
$(Q)$(MAKE) -C $(srctree) KBUILD_SRC= $@
else
ifeq ($(config-targets),1)
# ===========================================================================
# *config targets only - make sure prerequisites are updated, and descend
# in scripts/kconfig to make the *config target
# Read arch specific Makefile to set KBUILD_DEFCONFIG as needed.
# KBUILD_DEFCONFIG may point out an alternative default configuration
# used for 'make defconfig'
include $(srctree)/Makefile.$(ARCH)
export KBUILD_DEFCONFIG
%config: scripts_basic outputmakefile FORCE
$(Q)mkdir -p include/config
$(Q)$(MAKE) $(build)=scripts/kconfig $@
# $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= .kernelrelease
else
# ===========================================================================
# Build targets only - this includes Nautilus arch specific targets, clean
# targets and others. In general all targets except *config targets.
# Additional helpers built in scripts/
# Carefully list dependencies so we do not try to build scripts twice
# in parrallel
PHONY += scripts
scripts: scripts_basic include/config/MARKER
$(Q)$(MAKE) $(build)=$(@)
scripts_basic: include/autoconf.h
# Objects we will link into Nautilus / subdirs we need to visit
core-y := src/
libs-y := lib/
ifeq ($(dot-config),1)
# In this section, we need .config
# Read in dependencies to all Kconfig* files, make sure to run
# oldconfig if changes are detected.
-include .kconfig.d
include .config
# If .config needs to be updated, it will be done via the dependency
# that autoconf has on .config.
# To avoid any implicit rule to kick in, define an empty command
.config .kconfig.d: ;
# If .config is newer than include/autoconf.h, someone tinkered
# with it and forgot to run make oldconfig.
# If kconfig.d is missing then we are probably in a cleaned tree so
# we execute the config step to be sure to catch updated Kconfig files
include/autoconf.h: .kconfig.d .config
$(Q)mkdir -p include/config
$(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig
else
# Dummy target needed, because used as prerequisite
include/autoconf.h: ;
endif
ifdef NAUT_CONFIG_XEON_PHI
AS = $(CROSS_COMPILE)k1om-mpss-linux-as
LD = $(CROSS_COMPILE)k1om-mpss-linux-ld
CC = $(CROSS_COMPILE)k1om-mpss-linux-gcc
CXX = $(CROSS_COMPILE)k1om-mpss-linux-g++
AR = $(CROSS_COMPILE)k1om-mpss-linux-ar
NM = $(CROSS_COMPILE)k1om-mpss-linux-nm
STRIP = $(CROSS_COMPILE)k1om-mpss-linux-strip
OBJCOPY = $(CROSS_COMPILE)k1om-mpss-linux-objcopy
OBJDUMP = $(CROSS_COMPILE)k1om-mpss-linux-objdump
CFLAGS += -fno-optimize-sibling-calls
endif
#
# Update libs, etc based on NAUT_CONFIG_TOOLCHAIN_ROOT
#
#
ifneq ($(NAUT_CONFIG_CXX_SUPPORT)a,a)
ifeq ($(NAUT_CONFIG_TOOLCHAIN_ROOT)a,""a)
ifeq ($(CROSS_COMPILE)a, a)
# guess where the std libs are
libs-y += `locate libstdc++.a | head -1`
else
libs-y += $(CROSS_COMPILE)/../lib64/libstdc++.a
endif
else
libs-y += $(NAUT_CONFIG_TOOLCHAIN_ROOT)/lib64/libstdc++.a
endif
endif # NAUT_CONFIG_CXX_SUPPORT
#$(NAUT_CONF_TOOLCHAIN_ROOT)/lib64/libstdc++.a
#-lstdc++
#/usr/lib64/libstdc++.a \
#/home/kyle/opt/cross/lib/gcc/x86_64-elf/4.8.0/libgcc.a \
#/usr/lib64/libsupc++.a \
#/usr/lib64/libc.a \
ifdef NAUT_CONFIG_PALACIOS
PALACIOS_DIR=$(subst "",,$(NAUT_CONFIG_PALACIOS_DIR))
CFLAGS += -I$(PALACIOS_DIR)/nautilus -I$(PALACIOS_DIR)/palacios/include
libs-y += $(PALACIOS_DIR)/libv3vee.a $(PALACIOS_DIR)/libnautilus.a
LDFLAGS += --whole-archive -dp
# image attachement here somewhere for testing, probably via a linker script
endif
# The all: target is the default when no target is given on the
# command line.
# This allow a user to issue only 'make' to build a kernel including modules
# Defaults nautilus but it is usually overriden in the arch makefile
all: nautilus $(DEFAULT_EXTRA_TARGETS)
ifdef NAUT_CONFIG_DEBUG_INFO
CFLAGS += -g
endif
include $(srctree)/Makefile.$(ARCH)
# arch Makefile may override CC so keep this after arch Makefile is included
NOSTDINC_FLAGS +=
# disable pointer signedness warnings in gcc 4.0
CFLAGS += $(call cc-option,-Wno-pointer-sign,)
# Default kernel image to build when no specific target is given.
# KBUILD_IMAGE may be overruled on the commandline or
# set in the environment
# Also any assignments in /Makefile.$(ARCH) take precedence over
# this default value
export KBUILD_IMAGE ?= nautilus
#
# INSTALL_PATH specifies where to place the updated kernel and system map
# images. Default is /boot, but you can set it to other values
export INSTALL_PATH ?= /build
nautilus-dirs := $(patsubst %/,%,$(filter %/, \
$(core-y) $(libs-y)))
nautilus-cleandirs := $(sort $(nautilus-dirs) $(patsubst %/,%,$(filter %/, \
$(core-n) $(core-) $(libs-n) $(libs-))))
core-y := $(patsubst %/, %/built-in.o, $(core-y))
libs-y := $(patsubst %/, %/built-in.o, $(libs-y))
# Build Nautilus
# ---------------------------------------------------------------------------
# Nautilus is build from the objects selected by $(nautilus-init) and
# $(nautilus). Most are built-in.o files from top-level directories
# in the kernel tree, others are specified in Makefile.
# Ordering when linking is important, and $(nautilus-init) must be first.
#
# Nautilus
# ^
# |
# +--< $(nautilus)
# | +--< src/built-in.o + more
#
nautilus := $(core-y) $(libs-y)
ifdef NAUT_CONFIG_XEON_PHI
LD_SCRIPT:=link/nautilus.ld.xeon_phi
else
ifdef NAUT_CONFIG_HVM_HRT
LD_SCRIPT:=link/nautilus.ld.hrt
else
ifdef NAUT_CONFIG_PALACIOS
LD_SCRIPT:=link/nautilus.ld.palacios
else
ifdef NAUT_CONFIG_GEM5
LD_SCRIPT:=link/nautilus.ld.gem5
else
LD_SCRIPT:=link/nautilus.ld
endif
endif
endif
endif
quiet_cmd_transform_linkscript__ ?= CC $@
cmd_transform_linkscript__ ?= $(CC) -E -P \
-DHIHALF_OFFSET=$(NAUT_CONFIG_HRT_HIHALF_OFFSET) \
-x c-header -o link/nautilus.ld.hrt link/hrt.lds
# Rule to link nautilus - also used during CONFIG_CONFIGKALLSYMS
# May be overridden by /Makefile.$(ARCH)
quiet_cmd_nautilus__ ?= LD $@
cmd_nautilus__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) -o $@ \
-T $(LD_SCRIPT) $(core-y) \
--start-group $(libs-y) --end-group
# Generate new nautilus version
quiet_cmd_nautilus_version = GEN .version
cmd_nautilus_version = set -e; \
if [ ! -r .version ]; then \
rm -f .version; \
echo 1 >.version; \
else \
mv .version .old_version; \
expr 0$$(cat .old_version) + 1 >.version; \
fi;
# Link of nautilus
# If CONFIG_KALLSYMS is set .version is already updated
# Generate System.map and verify that the content is consistent
# Use + in front of the nautilus rule to silent warning with make -j2
# First command is ':' to allow us to use + in front of the rule
ifdef NAUT_CONFIG_HVM_HRT
define rule_nautilus__
:
$(call cmd,transform_linkscript__)
$(call cmd,nautilus__)
$(Q)echo 'cmd_$@ := $(cmd_nautilus__)' > $(@D)/.$(@F).cmd
endef
else
define rule_nautilus__
:
$(call cmd,nautilus__)
$(Q)echo 'cmd_$@ := $(cmd_nautilus__)' > $(@D)/.$(@F).cmd
endef
endif
# nautilus image - including updated kernel symbols
$(BIN_NAME): $(nautilus)
$(call if_changed_rule,nautilus__)
$(SYM_NAME): $(BIN_NAME)
@scripts/gen_sym_file.sh $(BIN_NAME) tmp.sym
$(SEC_NAME): $(BIN_NAME)
@scripts/gen_sec_file.sh $(BIN_NAME) tmp.sec
nautilus: $(BIN_NAME) $(SYM_NAME) $(SEC_NAME)
# New function to run a Python script which generates Lua test code,
# addition of a separate flag (LUA_BUILD_FLAG) which is set to indicate
# that the debug symbols we need for wrapping Nautilus functions will
# be available during the second build (which we need to generate appropriate
# function wrappers)
define lua__
@python scripts/parse_gdb.py
LUA_BUILD_FLAG=1 make
endef
# if NAUT_CONFIG_LUA_TEST is defined then call the function lua__ to
# generate additional wrapper code
#
quiet_cmd_isoimage = MKISO $(ISO_NAME)
define cmd_isoimage
mkdir -p .iso/boot/grub && \
cp configs/grub.cfg .iso/boot/grub && \
cp $(BIN_NAME) $(SYM_NAME) $(SEC_NAME) .iso/boot && \
$(GRUBMKRESCUE) -o $(ISO_NAME) .iso >/dev/null 2>&1 && \
rm -rf .iso
endef
isoimage: nautilus
ifdef NAUT_CONFIG_LUA_TEST
$(call lua__)
endif
$(call cmd,isoimage)
nautilus.asm: $(BIN_NAME)
$(OBJDUMP) --disassemble $< > $@
ifdef NAUT_CONFIG_USE_WLLVM
bitcode: $(BIN_NAME)
extract-bc $(BIN_NAME) -o $(BC_NAME)
llvm-dis $(BC_NAME) -o $(LL_NAME)
ifdef NAUT_CONFIG_USE_WLLVM_WHOLE_OPT
whole_opt: $(BIN_NAME)
extract-bc $(BIN_NAME) -o $(BC_NAME)
opt -strip-debug $(BC_NAME)
clang $(CFLAGS) -c $(BC_NAME) -o .nautilus.o
$(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) -o $(BIN_NAME) -T $(LD_SCRIPT) .nautilus.o `scripts/findasm.pl`
rm .nautilus.o
endif
endif
# The actual objects are generated when descending,
# make sure no implicit rule kicks in
$(sort $(nautilus)) : $(nautilus-dirs) ;
# Handle descending into subdirectories listed in $(nautilus-dirs)
# Preset locale variables to speed up the build process. Limit locale
# tweaks to this spot to avoid wrong language settings when running
# make menuconfig etc.
# Error messages still appears in the original language
PHONY += $(nautilus-dirs)
$(nautilus-dirs): prepare scripts
$(Q)$(MAKE) $(build)=$@
# Things we need to do before we recursively start building the kernel
# or the modules are listed in "prepare".
# A multi level approach is used. prepareN is processed before prepareN-1.
# archprepare is used in arch Makefiles and when processed arch symlink,
# version.h and scripts_basic is processed / created.
# Listed in dependency order
PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3
# prepare-all is deprecated, use prepare as valid replacement
PHONY += prepare-all
# prepare3 is used to check if we are building in a separate output directory,
# and if so do:
# 1) Check that make has not been executed in the kernel src $(srctree)
prepare3:
ifneq ($(KBUILD_SRC),)
@echo ' Using $(srctree) as source for kernel'
$(Q)if [ -f $(srctree)/.config ]; then \
echo " $(srctree) is not clean, please run 'make mrproper'";\
echo " in the '$(srctree)' directory.";\
/bin/false; \
fi;
endif
# prepare2 creates a makefile if using a separate output directory
prepare2: prepare3 outputmakefile
prepare1: prepare2 include/config/MARKER
archprepare: prepare1 scripts_basic
prepare0: archprepare FORCE
$(Q)$(MAKE) $(build)=.
# All the preparing..
prepare prepare-all: prepare0
include/config/MARKER: scripts/basic/split-include include/autoconf.h
@echo ' SPLIT include/autoconf.h -> include/config/*'
@scripts/basic/split-include include/autoconf.h include/config
@touch $@
# ---------------------------------------------------------------------------
PHONY += depend dep
depend dep:
@echo '*** Warning: make $@ is unnecessary now.'
###
# Cleaning is done on three levels.
# make clean Delete most generated files
# Leave enough to build external modules
# make mrproper Delete the current configuration, and all generated files
# make distclean Remove editor backup files, patch leftover files and the like
# Directories & files removed with 'make clean'
CLEAN_DIRS += $(MODVERDIR)
CLEAN_FILES += nautilus.asm $(SYM_NAME) $(SEC_NAME) $(ISO_NAME) $(BIN_NAME) \
.tmp_version .tmp_nautilus*
# Directories & files removed with 'make mrproper'
MRPROPER_DIRS += include/config
MRPROPER_FILES += .config .config.old .version .old_version \
include/autoconf.h \
tags TAGS cscope*
# \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
# clean - Delete most, but leave enough to build external modules
#
clean: rm-dirs := $(CLEAN_DIRS)
clean: rm-files := $(CLEAN_FILES)
clean-dirs := $(addprefix _clean_,$(srctree) $(nautilus-cleandirs))
PHONY += $(clean-dirs) clean archclean
$(clean-dirs):
$(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
clean: archclean $(clean-dirs)
$(call cmd,rmdirs)
$(call cmd,rmfiles)
@find . $(RCS_FIND_IGNORE) \
\( -name 'lib' \) -prune -o \
\( -name '*.[oas]' -o -name '.*.cmd' \
-o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' -o -name '*.ko' \) \
-type f -print | xargs rm -f
# mrproper - Delete all generated files, including .config
#
mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS))
mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
#mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts)
mrproper-dirs := $(addprefix _mrproper_, scripts)
PHONY += $(mrproper-dirs) mrproper archmrproper
$(mrproper-dirs):
$(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
mrproper: clean archmrproper $(mrproper-dirs)
$(call cmd,rmdirs)
$(call cmd,rmfiles)
# distclean
#
PHONY += distclean
distclean: mrproper
@find $(srctree) $(RCS_FIND_IGNORE) \
\( -name '*.orig' -o -name '*.rej' -o -name '*~' \
-o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
-o -name '.*.rej' -o -size 0 \
-o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \
-type f -print | xargs rm -f
# Packaging of the kernel to various formats
# ---------------------------------------------------------------------------
# rpm target kept for backward compatibility
package-dir := $(srctree)/scripts/package
%pkg: FORCE
$(Q)$(MAKE) $(build)=$(package-dir) $@
rpm: FORCE
$(Q)$(MAKE) $(build)=$(package-dir) $@
# Brief documentation of the typical targets used
# ---------------------------------------------------------------------------
help:
@echo 'Cleaning targets:'
@echo ' clean - remove most generated files but keep the config'
@echo ' mrproper - remove all generated files + config + various backup files'
@echo ''
@echo 'Configuration targets:'
@$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
@echo ''
@echo 'Other generic targets:'
@echo ' all - Build all targets marked with [*]'
@echo '* nautilus - Build the Nautilus Kernel'
@echo ' dir/ - Build all files in dir and below'
@echo ' dir/file.[ois] - Build specified target only'
@echo ' dir/file.ko - Build module including final link'
@echo ' rpm - Build a kernel as an RPM package'
@echo ' tags/TAGS - Generate tags file for editors'
@echo ' cscope - Generate cscope index'
@echo ''
@echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
@echo ' make O=dir [targets] Locate all output files in "dir", including .config'
@echo ' make C=1 [targets] Check all c source with $$CHECK (sparse)'
@echo ' make C=2 [targets] Force check of all c source with $$CHECK (sparse)'
@echo ''
@echo 'Execute "make" or "make all" to build all targets marked with [*] '
@echo 'For further info see the ./README file'
# Documentation targets
# ---------------------------------------------------------------------------
%docs: scripts_basic FORCE
$(Q)$(MAKE) $(build)=Documentation/DocBook $@
# Generate tags for editors