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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [RFC XEN PATCH 21/23] Import root Makefile from Linux v5.3
Edit a lot of it out, mostly CFLAGS, build of modules.
Edit in xenversion.
---
xen/Makefile | 1249 ++++++++++++++++++++++++++++++++++++++++----------
1 file changed, 1001 insertions(+), 248 deletions(-)
diff --git a/xen/Makefile b/xen/Makefile
index b1b60e679082..90645668957c 100644
--- a/xen/Makefile
+++ b/xen/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
# This is the correct place to edit the build version.
# All other places this is stored (eg. compile.h) should be autogenerated.
export XEN_VERSION = 4
@@ -11,284 +12,1036 @@ export XEN_DOMAIN ?= $(shell ([ -x
/bin/dnsdomainname ] && /bin/dnsdomainname) |
export XEN_BUILD_DATE ?= $(shell LC_ALL=C date)
export XEN_BUILD_TIME ?= $(shell LC_ALL=C date +%T)
export XEN_BUILD_HOST ?= $(shell hostname)
-export XEN_CONFIG_EXPERT ?= n
-export BASEDIR := $(CURDIR)
-export XEN_ROOT := $(BASEDIR)/..
+export XEN_ROOT := $(CURDIR)/..
+
+# *DOCUMENTATION*
+# To see a list of typical targets execute "make help"
+# More info can be located in ./README
+# Comments in this file are targeted only to the developer, do not
+# expect to learn how to build the kernel reading this file.
+
+# That's our default target when none is given on the command line
+PHONY := _all
+_all:
+
+# We are using a recursive build, so we need to do a little thinking
+# to get the ordering right.
+#
+# Most importantly: sub-Makefiles should only ever modify files in
+# their own directory. If in some directory we have a dependency on
+# a file in another dir (which doesn't happen often, but it's often
+# unavoidable when linking the built-in.a targets which finally
+# turn into xen), we will call a sub make in that other dir, and
+# after that we are sure that everything which is in that other dir
+# is now up to date.
+#
+# The only cases where we need to modify files which have global
+# effects are thus separated out and done before the recursive
+# descending is started. They are now explicitly listed as the
+# prepare rule.
+
+ifneq ($(sub_make_done),1)
# Do not use make's built-in rules and variables
+# (this increases performance and avoids hard-to-debug behaviour)
MAKEFLAGS += -rR
-EFI_MOUNTPOINT ?= $(BOOT_DIR)/efi
+# Avoid funny character set dependencies
+unexport LC_ALL
+LC_COLLATE=C
+LC_NUMERIC=C
+export LC_COLLATE LC_NUMERIC
-ARCH=$(XEN_TARGET_ARCH)
-SRCARCH=$(shell echo $(ARCH) | sed -e 's/x86.*/x86/' -e
s'/arm\(32\|64\)/arm/g')
+# Avoid interference with shell env settings
+unexport GREP_OPTIONS
-# Don't break if the build process wasn't called from the top level
-# we need XEN_TARGET_ARCH to generate the proper config
-include $(XEN_ROOT)/Config.mk
+# 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 will 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 $@ :<
+#
+# If KBUILD_VERBOSE equals 0 then the above command will be hidden.
+# If KBUILD_VERBOSE equals 1 then the above command is displayed.
+#
+# To put more focus on warnings, be less verbose as default
+# Use 'make V=1' to see the full commands
-# Allow someone to change their config file
-export KCONFIG_CONFIG ?= .config
+ifeq ("$(origin V)", "command line")
+ KBUILD_VERBOSE = $(V)
+endif
+ifndef KBUILD_VERBOSE
+ KBUILD_VERBOSE = 0
+endif
-.PHONY: default
-default: build
+ifeq ($(KBUILD_VERBOSE),1)
+ quiet =
+ Q =
+else
+ quiet=quiet_
+ Q = @
+endif
+
+# If the user is running make -s (silent mode), suppress echoing of
+# commands
+
+ifneq ($(findstring s,$(filter-out --%,$(MAKEFLAGS))),)
+ quiet=silent_
+endif
+
+export quiet Q KBUILD_VERBOSE
-.PHONY: dist
-dist: install
+# Kbuild will save output files in the current working directory.
+# This does not need to match to the root of the kernel source tree.
+#
+# For example, you can do this:
+#
+# cd /dir/to/store/output/files; make -f /dir/to/kernel/source/Makefile
+#
+# If you want to save output files in a different location, there are
+# two syntaxes to specify it.
+#
+# 1) O=
+# Use "make O=dir/to/store/output/files/"
+#
+# 2) Set KBUILD_OUTPUT
+# Set the environment variable KBUILD_OUTPUT to point to the output directory.
+# export KBUILD_OUTPUT=dir/to/store/output/files/; make
+#
+# The O= assignment takes precedence over the KBUILD_OUTPUT environment
+# variable.
-build install:: include/config/auto.conf
+# Do we want to change the working directory?
+ifeq ("$(origin O)", "command line")
+ KBUILD_OUTPUT := $(O)
+endif
-.PHONY: build install uninstall clean distclean cscope TAGS tags MAP gtags
tests
-build install uninstall debug clean distclean cscope TAGS tags MAP gtags
tests::
-ifneq ($(XEN_TARGET_ARCH),x86_32)
- $(MAKE) -f Rules.mk _$@
+ifneq ($(KBUILD_OUTPUT),)
+# Make's built-in functions such as $(abspath ...), $(realpath ...) cannot
+# expand a shell special character '~'. We use a somewhat tedious way here.
+abs_objtree := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) && pwd)
+$(if $(abs_objtree),, \
+ $(error failed to create output directory "$(KBUILD_OUTPUT)"))
+
+# $(realpath ...) resolves symlinks
+abs_objtree := $(realpath $(abs_objtree))
+else
+abs_objtree := $(CURDIR)
+endif # ifneq ($(KBUILD_OUTPUT),)
+
+ifeq ($(abs_objtree),$(CURDIR))
+# Suppress "Entering directory ..." unless we are changing the work directory.
+MAKEFLAGS += --no-print-directory
else
- echo "*** Xen x86/32 target no longer supported!"
+need-sub-make := 1
+endif
+
+abs_srctree := $(realpath $(dir $(lastword $(MAKEFILE_LIST))))
+
+ifneq ($(words $(subst :, ,$(abs_srctree))), 1)
+$(error source directory cannot contain spaces or colons)
+endif
+
+ifneq ($(abs_srctree),$(abs_objtree))
+# Look for make include files relative to root of kernel src
+#
+# This does not become effective immediately because MAKEFLAGS is re-parsed
+# once after the Makefile is read. We need to invoke sub-make.
+MAKEFLAGS += --include-dir=$(abs_srctree)
+need-sub-make := 1
+endif
+
+ifneq ($(filter 3.%,$(MAKE_VERSION)),)
+# 'MAKEFLAGS += -rR' does not immediately become effective for GNU Make 3.x
+# We need to invoke sub-make to avoid implicit rules in the top Makefile.
+need-sub-make := 1
+# Cancel implicit rules for this Makefile.
+$(lastword $(MAKEFILE_LIST)): ;
+endif
+
+export abs_srctree abs_objtree
+export sub_make_done := 1
+
+ifeq ($(need-sub-make),1)
+
+PHONY += $(MAKECMDGOALS) sub-make
+
+$(filter-out _all sub-make $(lastword $(MAKEFILE_LIST)), $(MAKECMDGOALS))
_all: sub-make
+ @:
+
+# Invoke a second make in the output directory, passing relevant variables
+sub-make:
+ $(Q)$(MAKE) -C $(abs_objtree) -f $(abs_srctree)/Makefile $(MAKECMDGOALS)
+
+endif # need-sub-make
+endif # sub_make_done
+
+# We process the rest of the Makefile if this is the final invocation of make
+ifeq ($(need-sub-make),)
+
+# Do not print "Entering directory ...",
+# but we want to display it when entering to the output directory
+# so that IDEs/editors are able to understand relative filenames.
+MAKEFLAGS += --no-print-directory
+
+# Call a source code checker (by default, "sparse") as part of the
+# C compilation.
+#
+# Use 'make C=1' to enable checking of only re-compiled files.
+# Use 'make C=2' to enable checking of *all* source files, regardless
+# of whether they are re-compiled or not.
+#
+# See the file "Documentation/dev-tools/sparse.rst" for more details,
+# including where to get the "sparse" utility.
+
+ifeq ("$(origin C)", "command line")
+ KBUILD_CHECKSRC = $(C)
+endif
+ifndef KBUILD_CHECKSRC
+ KBUILD_CHECKSRC = 0
+endif
+
+export KBUILD_CHECKSRC
+
+ifeq ($(abs_srctree),$(abs_objtree))
+ # building in the source tree
+ srctree := .
+ building_out_of_srctree :=
+else
+ ifeq ($(abs_srctree)/,$(dir $(abs_objtree)))
+ # building in a subdirectory of the source tree
+ srctree := ..
+ else
+ srctree := $(abs_srctree)
+ endif
+ building_out_of_srctree := 1
+endif
+
+ifneq ($(KBUILD_ABS_SRCTREE),)
+srctree := $(abs_srctree)
+endif
+
+objtree := .
+VPATH := $(srctree)
+
+export building_out_of_srctree srctree objtree VPATH
+
+# 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).
+
+version_h := include/xen/compile.h
+
+clean-targets := %clean mrproper cleandocs
+no-dot-config-targets := $(clean-targets) \
+ cscope gtags TAGS tags help% %docs check% \
+ $(version_h) headers headers_% archheaders \
+ xenversion
+no-sync-config-targets := $(no-dot-config-targets) install %install
+
+config-targets := 0
+mixed-targets := 0
+dot-config := 1
+may-sync-config := 1
+
+ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
+ ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
+ dot-config := 0
+ endif
endif
-.PHONY: _build
-_build: $(TARGET)$(CONFIG_XEN_INSTALL_SUFFIX)
-
-.PHONY: _install
-_install: D=$(DESTDIR)
-_install: T=$(notdir $(TARGET))
-_install: Z=$(CONFIG_XEN_INSTALL_SUFFIX)
-_install: $(TARGET)$(CONFIG_XEN_INSTALL_SUFFIX)
- [ -d $(D)$(BOOT_DIR) ] || $(INSTALL_DIR) $(D)$(BOOT_DIR)
- $(INSTALL_DATA) $(TARGET)$(Z)
$(D)$(BOOT_DIR)/$(T)-$(XEN_FULLVERSION)$(Z)
- ln -f -s $(T)-$(XEN_FULLVERSION)$(Z)
$(D)$(BOOT_DIR)/$(T)-$(XEN_VERSION).$(XEN_SUBVERSION)$(Z)
- ln -f -s $(T)-$(XEN_FULLVERSION)$(Z)
$(D)$(BOOT_DIR)/$(T)-$(XEN_VERSION)$(Z)
- ln -f -s $(T)-$(XEN_FULLVERSION)$(Z) $(D)$(BOOT_DIR)/$(T)$(Z)
- [ -d "$(D)$(DEBUG_DIR)" ] || $(INSTALL_DIR) $(D)$(DEBUG_DIR)
- $(INSTALL_DATA) $(TARGET)-syms
$(D)$(DEBUG_DIR)/$(T)-syms-$(XEN_FULLVERSION)
- $(INSTALL_DATA) $(TARGET)-syms.map
$(D)$(DEBUG_DIR)/$(T)-syms-$(XEN_FULLVERSION).map
- $(INSTALL_DATA) $(KCONFIG_CONFIG)
$(D)$(BOOT_DIR)/$(T)-$(XEN_FULLVERSION).config
- if [ -r $(TARGET).efi -a -n '$(EFI_DIR)' ]; then \
- [ -d $(D)$(EFI_DIR) ] || $(INSTALL_DIR) $(D)$(EFI_DIR); \
- $(INSTALL_DATA) $(TARGET).efi
$(D)$(EFI_DIR)/$(T)-$(XEN_FULLVERSION).efi; \
- if [ -e $(TARGET).efi.map ]; then \
- $(INSTALL_DATA) $(TARGET).efi.map
$(D)$(DEBUG_DIR)/$(T)-$(XEN_FULLVERSION).efi.map; \
- fi; \
- ln -sf $(T)-$(XEN_FULLVERSION).efi
$(D)$(EFI_DIR)/$(T)-$(XEN_VERSION).$(XEN_SUBVERSION).efi; \
- ln -sf $(T)-$(XEN_FULLVERSION).efi
$(D)$(EFI_DIR)/$(T)-$(XEN_VERSION).efi; \
- ln -sf $(T)-$(XEN_FULLVERSION).efi $(D)$(EFI_DIR)/$(T).efi; \
- if [ -n '$(EFI_MOUNTPOINT)' -a -n '$(EFI_VENDOR)' ]; then \
- $(INSTALL_DATA) $(TARGET).efi
$(D)$(EFI_MOUNTPOINT)/efi/$(EFI_VENDOR)/$(T)-$(XEN_FULLVERSION).efi; \
- elif [ "$(D)" = "$(patsubst $(shell cd $(XEN_ROOT) &&
pwd)/%,%,$(D))" ]; then \
- echo 'EFI installation only partially done (EFI_VENDOR
not set)' >&2; \
- fi; \
- fi
-
-.PHONY: _tests
-_tests:
- $(MAKE) -f $(BASEDIR)/Rules.mk -C test tests
-
-.PHONY: _uninstall
-_uninstall: D=$(DESTDIR)
-_uninstall: T=$(notdir $(TARGET))
-_uninstall: Z=$(CONFIG_XEN_INSTALL_SUFFIX)
-_uninstall:
- rm -f $(D)$(BOOT_DIR)/$(T)-$(XEN_FULLVERSION).config
- rm -f $(D)$(BOOT_DIR)/$(T)-$(XEN_FULLVERSION)$(Z)
- rm -f $(D)$(BOOT_DIR)/$(T)-$(XEN_VERSION).$(XEN_SUBVERSION)$(Z)
- rm -f $(D)$(BOOT_DIR)/$(T)-$(XEN_VERSION)$(Z)
- rm -f $(D)$(BOOT_DIR)/$(T)$(Z)
- rm -f $(D)$(DEBUG_DIR)/$(T)-syms-$(XEN_FULLVERSION)
- rm -f $(D)$(DEBUG_DIR)/$(T)-syms-$(XEN_FULLVERSION).map
- rm -f $(D)$(EFI_DIR)/$(T)-$(XEN_FULLVERSION).efi
- rm -f $(D)$(EFI_DIR)/$(T)-$(XEN_VERSION).$(XEN_SUBVERSION).efi
- rm -f $(D)$(DEBUG_DIR)/$(T)-$(XEN_FULLVERSION).efi.map
- rm -f $(D)$(EFI_DIR)/$(T)-$(XEN_VERSION).efi
- rm -f $(D)$(EFI_DIR)/$(T).efi
- rm -f
$(D)$(EFI_MOUNTPOINT)/efi/$(EFI_VENDOR)/$(T)-$(XEN_FULLVERSION).efi
-
-.PHONY: _debug
-_debug:
- $(OBJDUMP) -D -S $(TARGET)-syms > $(TARGET).s
-
-.PHONY: _clean
-_clean: delete-unfresh-files
- $(MAKE) -C tools clean
- $(MAKE) -f $(BASEDIR)/Rules.mk -C include clean
- $(MAKE) -f $(BASEDIR)/Rules.mk -C common clean
- $(MAKE) -f $(BASEDIR)/Rules.mk -C drivers clean
- $(MAKE) -f $(BASEDIR)/Rules.mk -C xsm clean
- $(MAKE) -f $(BASEDIR)/Rules.mk -C crypto clean
- $(MAKE) -f $(BASEDIR)/Rules.mk -C arch/arm clean
- $(MAKE) -f $(BASEDIR)/Rules.mk -C arch/x86 clean
- $(MAKE) -f $(BASEDIR)/Rules.mk -C test clean
- $(MAKE) -f $(BASEDIR)/tools/kconfig/Makefile.kconfig ARCH=$(ARCH)
SRCARCH=$(SRCARCH) clean
- find . \( -name "*.o" -o -name ".*.d" -o -name ".*.d2" -o -name
"*.gcno" \) -exec rm -f {} \;
- rm -f include/asm $(TARGET) $(TARGET).gz $(TARGET).efi
$(TARGET).efi.map $(TARGET)-syms $(TARGET)-syms.map *~ core
- rm -f include/asm-*/asm-offsets.h
- rm -f .banner
-
-.PHONY: _distclean
-_distclean: clean
- rm -f tags TAGS cscope.files cscope.in.out cscope.out cscope.po.out
GTAGS GPATH GRTAGS GSYMS .config
-
-$(TARGET).gz: $(TARGET)
- gzip -n -f -9 < $< > $@.new
- mv $@.new $@
-
-$(TARGET): delete-unfresh-files
- $(MAKE) -C tools
- $(MAKE) -f $(BASEDIR)/Rules.mk include/xen/compile.h
- [ -e include/asm ] || ln -sf asm-$(TARGET_ARCH) include/asm
- [ -e arch/$(TARGET_ARCH)/efi ] && for f in boot.c runtime.c compat.c
efi.h;\
- do test -r arch/$(TARGET_ARCH)/efi/$$f || \
- ln -nsf ../../../common/efi/$$f arch/$(TARGET_ARCH)/efi/; \
- done; \
- true
- $(MAKE) -f $(BASEDIR)/Rules.mk -C include
- $(MAKE) -f $(BASEDIR)/Rules.mk -C arch/$(TARGET_ARCH) asm-offsets.s
- $(MAKE) -f $(BASEDIR)/Rules.mk include/asm-$(TARGET_ARCH)/asm-offsets.h
- $(MAKE) -f $(BASEDIR)/Rules.mk -C arch/$(TARGET_ARCH) $@
-
-# drivers/char/console.o contains static banner/compile info. Blow it away.
-# Don't refresh these files during e.g., 'sudo make install'
-.PHONY: delete-unfresh-files
-delete-unfresh-files:
- @if [ ! -r include/xen/compile.h -o -O include/xen/compile.h ]; then \
- rm -f include/xen/compile.h; \
- fi
-
-.banner: Makefile
- @if which figlet >/dev/null 2>&1 ; then \
- echo " Xen $(XEN_FULLVERSION)" | figlet -f tools/xen.flf >
$@.tmp; \
- else \
- echo " Xen $(XEN_FULLVERSION)" > $@.tmp; \
- fi
- @mv -f $@.tmp $@
-
-# compile.h contains dynamic build info. Rebuilt on every 'make' invocation.
-include/xen/compile.h: include/xen/compile.h.in .banner
- @sed -e 's/@@date@@/$(XEN_BUILD_DATE)/g' \
- -e 's/@@time@@/$(XEN_BUILD_TIME)/g' \
- -e 's/@@whoami@@/$(XEN_WHOAMI)/g' \
- -e 's/@@domain@@/$(XEN_DOMAIN)/g' \
- -e 's/@@hostname@@/$(XEN_BUILD_HOST)/g' \
- -e 's!@@compiler@@!$(shell $(CC) $(CFLAGS) --version 2>&1 | head
-1)!g' \
- -e 's/@@version@@/$(XEN_VERSION)/g' \
- -e 's/@@subversion@@/$(XEN_SUBVERSION)/g' \
- -e 's/@@extraversion@@/$(XEN_EXTRAVERSION)/g' \
- -e 's!@@changeset@@!$(shell tools/scmversion $(XEN_ROOT) || echo
"unavailable")!g' \
- < include/xen/compile.h.in > $@.new
- @cat .banner
- @$(PYTHON) tools/fig-to-oct.py < .banner >> $@.new
- @mv -f $@.new $@
-
-include/asm-$(TARGET_ARCH)/asm-offsets.h: arch/$(TARGET_ARCH)/asm-offsets.s
- @(set -e; \
- echo "/*"; \
- echo " * DO NOT MODIFY."; \
- echo " *"; \
- echo " * This file was auto-generated from $<"; \
- echo " *"; \
- echo " */"; \
- echo ""; \
- echo "#ifndef __ASM_OFFSETS_H__"; \
- echo "#define __ASM_OFFSETS_H__"; \
- echo ""; \
- sed -rne "/^[^#].*==>/{s:.*==>(.*)<==.*:\1:; s: [\$$#]: :; p;}"; \
- echo ""; \
- echo "#endif") <$< >$@
-
-SUBDIRS = xsm arch/$(TARGET_ARCH) common drivers test
-define all_sources
- ( find include/asm-$(TARGET_ARCH) -name '*.h' -print; \
- find include -name 'asm-*' -prune -o -name '*.h' -print; \
- find $(SUBDIRS) -name '*.[chS]' -print )
+ifneq ($(filter $(no-sync-config-targets), $(MAKECMDGOALS)),)
+ ifeq ($(filter-out $(no-sync-config-targets), $(MAKECMDGOALS)),)
+ may-sync-config := 0
+ endif
+endif
+
+ifneq ($(filter config %config,$(MAKECMDGOALS)),)
+ config-targets := 1
+ ifneq ($(words $(MAKECMDGOALS)),1)
+ mixed-targets := 1
+ endif
+endif
+
+# For "make -j clean all", "make -j mrproper defconfig all", etc.
+ifneq ($(filter $(clean-targets),$(MAKECMDGOALS)),)
+ ifneq ($(filter-out $(clean-targets),$(MAKECMDGOALS)),)
+ mixed-targets := 1
+ endif
+endif
+
+# install and modules_install need also be processed one by one
+ifneq ($(filter install,$(MAKECMDGOALS)),)
+ ifneq ($(filter modules_install,$(MAKECMDGOALS)),)
+ mixed-targets := 1
+ endif
+endif
+
+ifeq ($(mixed-targets),1)
+# ===========================================================================
+# We're called with mixed targets (*config and build targets).
+# Handle them one by one.
+
+PHONY += $(MAKECMDGOALS) __build_one_by_one
+
+$(filter-out __build_one_by_one, $(MAKECMDGOALS)): __build_one_by_one
+ @:
+
+__build_one_by_one:
+ $(Q)set -e; \
+ for i in $(MAKECMDGOALS); do \
+ $(MAKE) -f $(srctree)/Makefile $$i; \
+ done
+
+else
+
+include scripts/Kbuild.include
+
+# 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)
+SRCARCH := $(shell echo $(XEN_TARGET_ARCH) | \
+ sed -e 's/x86.*/x86/' -e s'/arm\(32\|64\)/arm/g')
+
+KCONFIG_CONFIG ?= .config
+export KCONFIG_CONFIG
+
+# 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)
+
+HOST_LFS_CFLAGS := $(shell getconf LFS_CFLAGS 2>/dev/null)
+HOST_LFS_LDFLAGS := $(shell getconf LFS_LDFLAGS 2>/dev/null)
+HOST_LFS_LIBS := $(shell getconf LFS_LIBS 2>/dev/null)
+
+HOSTCC = gcc
+HOSTCXX = g++
+KBUILD_HOSTCFLAGS := -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 \
+ -fomit-frame-pointer -std=gnu89 $(HOST_LFS_CFLAGS) \
+ $(HOSTCFLAGS)
+KBUILD_HOSTCXXFLAGS := -O2 $(HOST_LFS_CFLAGS) $(HOSTCXXFLAGS)
+KBUILD_HOSTLDFLAGS := $(HOST_LFS_LDFLAGS) $(HOSTLDFLAGS)
+KBUILD_HOSTLDLIBS := $(HOST_LFS_LIBS) $(HOSTLDLIBS)
+
+# Make variables (CC, etc...)
+AS = $(CROSS_COMPILE)as
+LD = $(CROSS_COMPILE)ld
+CC = $(CROSS_COMPILE)gcc
+CPP = $(CC) -E
+AR = $(CROSS_COMPILE)ar
+NM = $(CROSS_COMPILE)nm
+STRIP = $(CROSS_COMPILE)strip
+OBJCOPY = $(CROSS_COMPILE)objcopy
+OBJDUMP = $(CROSS_COMPILE)objdump
+OBJSIZE = $(CROSS_COMPILE)size
+PAHOLE = pahole
+LEX = flex
+YACC = bison
+AWK = awk
+PERL = perl
+PYTHON = python
+PYTHON2 = python2
+PYTHON3 = python3
+CHECK = sparse
+
+CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \
+ -Wbitwise -Wno-return-void -Wno-unknown-attribute $(CF)
+NOSTDINC_FLAGS :=
+CFLAGS_KERNEL =
+AFLAGS_KERNEL =
+LDFLAGS_vmlinux =
+
+# Use LINUXINCLUDE when you must reference the include/ directory.
+# Needed to be compatible with the O= option
+LINUXINCLUDE := \
+ $(if $(building_out_of_srctree),-I$(srctree)/include) \
+ -I$(objtree)/include
+
+KBUILD_AFLAGS := -D__ASSEMBLY__ -fno-PIE
+KBUILD_CFLAGS :=
+KBUILD_CPPFLAGS :=
+KBUILD_LDFLAGS :=
+GCC_PLUGINS_CFLAGS :=
+CLANG_FLAGS :=
+
+export ARCH SRCARCH CONFIG_SHELL HOSTCC KBUILD_HOSTCFLAGS CROSS_COMPILE AS LD
CC
+export CPP AR NM STRIP OBJCOPY OBJDUMP OBJSIZE PAHOLE LEX YACC AWK
+export PERL PYTHON PYTHON2 PYTHON3 CHECK CHECKFLAGS MAKE HOSTCXX
+export KBUILD_HOSTCXXFLAGS KBUILD_HOSTLDFLAGS KBUILD_HOSTLDLIBS
+
+export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS KBUILD_LDFLAGS
+export KBUILD_CFLAGS CFLAGS_KERNEL
+export CFLAGS_KASAN CFLAGS_KASAN_NOSANITIZE CFLAGS_UBSAN
+export KBUILD_AFLAGS AFLAGS_KERNEL
+export KBUILD_ARFLAGS
+
+# Files to ignore in find ... statements
+
+export 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/basic/
+PHONY += scripts_basic
+scripts_basic:
+ $(Q)$(MAKE) $(build)=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.
+# At the same time when output Makefile generated, generate .gitignore to
+# ignore whole output directory
+outputmakefile:
+ifdef building_out_of_srctree
+ $(Q)ln -fsn $(srctree) source
+ $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile $(srctree)
+ $(Q)test -e .gitignore || \
+ { echo "# this is build directory, ignore it"; echo "*"; } > .gitignore
+endif
+
+ifneq ($(shell $(CC) --version 2>&1 | head -n 1 | grep clang),)
+ifneq ($(CROSS_COMPILE),)
+CLANG_FLAGS += --target=$(notdir $(CROSS_COMPILE:%-=%))
+GCC_TOOLCHAIN_DIR := $(dir $(shell which $(CROSS_COMPILE)elfedit))
+CLANG_FLAGS += --prefix=$(GCC_TOOLCHAIN_DIR)
+GCC_TOOLCHAIN := $(realpath $(GCC_TOOLCHAIN_DIR)/..)
+endif
+ifneq ($(GCC_TOOLCHAIN),)
+CLANG_FLAGS += --gcc-toolchain=$(GCC_TOOLCHAIN)
+endif
+ifeq ($(shell $(AS) --version 2>&1 | head -n 1 | grep clang),)
+CLANG_FLAGS += -no-integrated-as
+endif
+CLANG_FLAGS += -Werror=unknown-warning-option
+KBUILD_CFLAGS += $(CLANG_FLAGS)
+KBUILD_AFLAGS += $(CLANG_FLAGS)
+export CLANG_FLAGS
+endif
+
+# The expansion should be delayed until arch/$(SRCARCH)/Makefile is included.
+# Some architectures define CROSS_COMPILE in arch/$(SRCARCH)/Makefile.
+# CC_VERSION_TEXT is referenced from Kconfig (so it needs export),
+# and from include/config/auto.conf.cmd to detect the compiler upgrade.
+CC_VERSION_TEXT = $(shell $(CC) --version 2>/dev/null | head -n 1)
+
+ifeq ($(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 arch/$(SRCARCH)/Makefile
+export KBUILD_DEFCONFIG KBUILD_KCONFIG CC_VERSION_TEXT
+
+config: scripts_basic outputmakefile FORCE
+ $(Q)$(MAKE) $(build)=scripts/kconfig $@
+
+%config: scripts_basic outputmakefile FORCE
+ $(Q)$(MAKE) $(build)=scripts/kconfig $@
+
+else
+# ===========================================================================
+# Build targets only - this includes vmlinux, arch specific targets, clean
+# targets and others. In general all targets except *config targets.
+
+PHONY += all
+_all: all
+
+# Just do built-in.
+
+KBUILD_BUILTIN := 1
+
+export KBUILD_BUILTIN
+
+ifeq ($(dot-config),1)
+include include/config/auto.conf
+endif
+
+ifeq ($(KBUILD_EXTMOD),)
+# Objects we will link into vmlinux / subdirs we need to visit
+init-y := init/
+drivers-y := drivers/ sound/
+drivers-$(CONFIG_SAMPLES) += samples/
+drivers-$(CONFIG_KERNEL_HEADER_TEST) += include/
+net-y := net/
+libs-y := lib/
+core-y := usr/
+virt-y := virt/
+endif # KBUILD_EXTMOD
+
+# 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 to vmlinux, but the arch makefile usually adds further targets
+all: vmlinux
+
+CFLAGS_GCOV := -fprofile-arcs -ftest-coverage \
+ $(call cc-option,-fno-tree-loop-im) \
+ $(call cc-disable-warning,maybe-uninitialized,)
+export CFLAGS_GCOV
+
+# The arch Makefiles can override CC_FLAGS_FTRACE. We may also append it later.
+ifdef CONFIG_FUNCTION_TRACER
+ CC_FLAGS_FTRACE := -pg
+endif
+
+RETPOLINE_CFLAGS_GCC := -mindirect-branch=thunk-extern
-mindirect-branch-register
+RETPOLINE_VDSO_CFLAGS_GCC := -mindirect-branch=thunk-inline
-mindirect-branch-register
+RETPOLINE_CFLAGS_CLANG := -mretpoline-external-thunk
+RETPOLINE_VDSO_CFLAGS_CLANG := -mretpoline
+RETPOLINE_CFLAGS := $(call cc-option,$(RETPOLINE_CFLAGS_GCC),$(call
cc-option,$(RETPOLINE_CFLAGS_CLANG)))
+RETPOLINE_VDSO_CFLAGS := $(call cc-option,$(RETPOLINE_VDSO_CFLAGS_GCC),$(call
cc-option,$(RETPOLINE_VDSO_CFLAGS_CLANG)))
+export RETPOLINE_CFLAGS
+export RETPOLINE_VDSO_CFLAGS
+
+# The arch Makefile can set ARCH_{CPP,A,C}FLAGS to override the default
+# values of the respective KBUILD_* variables
+ARCH_CPPFLAGS :=
+ARCH_AFLAGS :=
+ARCH_CFLAGS :=
+include arch/$(SRCARCH)/Makefile
+
+ifeq ($(dot-config),1)
+ifeq ($(may-sync-config),1)
+# Read in dependencies to all Kconfig* files, make sure to run syncconfig if
+# changes are detected. This should be included after arch/$(SRCARCH)/Makefile
+# because some architectures define CROSS_COMPILE there.
+include include/config/auto.conf.cmd
+
+$(KCONFIG_CONFIG):
+ @echo >&2 '***'
+ @echo >&2 '*** Configuration file "$@" not found!'
+ @echo >&2 '***'
+ @echo >&2 '*** Please run some configurator (e.g. "make oldconfig" or'
+ @echo >&2 '*** "make menuconfig" or "make xconfig").'
+ @echo >&2 '***'
+ @/bin/false
+
+# The actual configuration files used during the build are stored in
+# include/generated/ and include/config/. Update them if .config is newer than
+# include/config/auto.conf (which mirrors .config).
+#
+# This exploits the 'multi-target pattern rule' trick.
+# The syncconfig should be executed only once to make all the targets.
+%/auto.conf %/auto.conf.cmd %/tristate.conf: $(KCONFIG_CONFIG)
+ $(Q)$(MAKE) -f $(srctree)/Makefile syncconfig
+else
+# External modules and some install targets need include/generated/autoconf.h
+# and include/config/auto.conf but do not care if they are up-to-date.
+# Use auto.conf to trigger the test
+PHONY += include/config/auto.conf
+
+include/config/auto.conf:
+ $(Q)test -e include/generated/autoconf.h -a -e $@ || ( \
+ echo >&2; \
+ echo >&2 " ERROR: Kernel configuration is invalid."; \
+ echo >&2 " include/generated/autoconf.h or $@ are missing.";\
+ echo >&2 " Run 'make oldconfig && make prepare' on kernel src
to fix it."; \
+ echo >&2 ; \
+ /bin/false)
+
+endif # may-sync-config
+endif # $(dot-config)
+
+
+# arch Makefile may override CC so keep this after arch Makefile is included
+NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
+
+
+
+# use the deterministic mode of AR if available
+KBUILD_ARFLAGS := $(call ar-option,D)
+
+include scripts/Makefile.kasan
+include scripts/Makefile.ubsan
+
+# Add any arch overrides and user supplied CPPFLAGS, AFLAGS and CFLAGS as the
+# last assignments
+KBUILD_CPPFLAGS += $(ARCH_CPPFLAGS) $(KCPPFLAGS)
+KBUILD_AFLAGS += $(ARCH_AFLAGS) $(KAFLAGS)
+KBUILD_CFLAGS += $(ARCH_CFLAGS) $(KCFLAGS)
+
+# insure the checker run with the right endianness
+CHECKFLAGS += $(if $(CONFIG_CPU_BIG_ENDIAN),-mbig-endian,-mlittle-endian)
+
+# the checker needs the correct machine size
+CHECKFLAGS += $(if $(CONFIG_64BIT),-m64,-m32)
+
+# Default kernel image to build when no specific target is given.
+# KBUILD_IMAGE may be overruled on the command line or
+# set in the environment
+# Also any assignments in arch/$(ARCH)/Makefile take precedence over
+# this default value
+export KBUILD_IMAGE ?= vmlinux
+
+#
+# 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 ?= /boot
+
+HOST_LIBELF_LIBS = $(shell pkg-config libelf --libs 2>/dev/null || echo -lelf)
+
+PHONY += prepare0
+
+core-y += kernel/ certs/ mm/ fs/ ipc/ security/ crypto/ block/
+
+vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \
+ $(core-y) $(core-m) $(drivers-y) $(drivers-m) \
+ $(net-y) $(net-m) $(libs-y) $(libs-m) $(virt-y)))
+
+vmlinux-alldirs := $(sort $(vmlinux-dirs) Documentation \
+ $(patsubst %/,%,$(filter %/, $(init-) $(core-) \
+ $(drivers-) $(net-) $(libs-) $(virt-))))
+
+init-y := $(patsubst %/, %/built-in.a, $(init-y))
+core-y := $(patsubst %/, %/built-in.a, $(core-y))
+drivers-y := $(patsubst %/, %/built-in.a, $(drivers-y))
+net-y := $(patsubst %/, %/built-in.a, $(net-y))
+libs-y1 := $(patsubst %/, %/lib.a, $(libs-y))
+libs-y2 := $(patsubst %/, %/built-in.a, $(filter-out %.a,
$(libs-y)))
+virt-y := $(patsubst %/, %/built-in.a, $(virt-y))
+
+# Externally visible symbols (used by link-vmlinux.sh)
+export KBUILD_VMLINUX_OBJS := $(head-y) $(init-y) $(core-y) $(libs-y2) \
+ $(drivers-y) $(net-y) $(virt-y)
+export KBUILD_VMLINUX_LIBS := $(libs-y1)
+export KBUILD_LDS := arch/$(SRCARCH)/kernel/vmlinux.lds
+export LDFLAGS_vmlinux
+# used by scripts/package/Makefile
+export KBUILD_ALLDIRS := $(sort $(filter-out arch/%,$(vmlinux-alldirs))
LICENSES arch include scripts tools)
+
+vmlinux-deps := $(KBUILD_LDS) $(KBUILD_VMLINUX_OBJS) $(KBUILD_VMLINUX_LIBS)
+
+ARCH_POSTLINK := $(wildcard $(srctree)/arch/$(SRCARCH)/Makefile.postlink)
+
+# Final link of vmlinux with optional arch pass after final link
+cmd_link-vmlinux = \
+ $(CONFIG_SHELL) $< $(LD) $(KBUILD_LDFLAGS) $(LDFLAGS_vmlinux) ; \
+ $(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true)
+
+vmlinux: scripts/link-vmlinux.sh autoksyms_recursive $(vmlinux-deps) FORCE
+ +$(call if_changed,link-vmlinux)
+
+targets := vmlinux
+
+# The actual objects are generated when descending,
+# make sure no implicit rule kicks in
+$(sort $(vmlinux-deps)): $(vmlinux-dirs) ;
+
+# Handle descending into subdirectories listed in $(vmlinux-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 += $(vmlinux-dirs)
+$(vmlinux-dirs): prepare
+ $(Q)$(MAKE) $(build)=$@ need-builtin=1 need-modorder=1
+
+filechk_kernel.release = \
+ echo "$(KERNELVERSION)$$($(CONFIG_SHELL)
$(srctree)/scripts/setlocalversion $(srctree))"
+
+# Store (new) KERNELRELEASE string in include/config/kernel.release
+include/config/kernel.release: FORCE
+ $(call filechk,kernel.release)
+
+# Additional helpers built in scripts/
+# Carefully list dependencies so we do not try to build scripts twice
+# in parallel
+PHONY += scripts
+scripts: scripts_basic scripts_dtc
+ $(Q)$(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 asm symlink,
+# version.h and scripts_basic is processed / created.
+
+PHONY += prepare archprepare prepare3
+
+# 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 $(srctree)
+prepare3: include/config/kernel.release
+ifdef building_out_of_srctree
+ @$(kecho) ' Using $(srctree) as source for kernel'
+ $(Q)if [ -f $(srctree)/.config -o \
+ -d $(srctree)/include/config -o \
+ -d $(srctree)/arch/$(SRCARCH)/include/generated ]; then \
+ echo >&2 " $(srctree) is not clean, please run 'make
ARCH=$(ARCH) mrproper'"; \
+ echo >&2 " in the '$(srctree)' directory.";\
+ /bin/false; \
+ fi;
+endif
+
+archprepare: archheaders archscripts scripts prepare3 outputmakefile \
+ asm-generic $(version_h) $(autoksyms_h) include/generated/utsrelease.h
+
+prepare0: archprepare
+ $(Q)$(MAKE) $(build)=scripts/mod
+ $(Q)$(MAKE) $(build)=.
+
+# All the preparing..
+prepare: prepare0
+
+# Generate some files
+# ---------------------------------------------------------------------------
+
+# KERNELRELEASE can change from a few different places, meaning version.h
+# needs to be updated, so this check is forced on all builds
+
+uts_len := 64
+define filechk_utsrelease.h
+ if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \
+ echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \
+ exit 1; \
+ fi; \
+ echo \#define UTS_RELEASE \"$(KERNELRELEASE)\"
endef
-define set_exuberant_flags
- exuberant_flags=`$1 --version 2>/dev/null | (grep -iq exuberant && \
- echo "-I __initdata,__exitdata,__acquires,__releases \
- -I EXPORT_SYMBOL \
- --extra=+f --c-kinds=+px") || true`
+define filechk_version.h
+ echo \#define LINUX_VERSION_CODE $(shell \
+ expr $(VERSION) \* 65536 + 0$(PATCHLEVEL) \* 256 + 0$(SUBLEVEL)); \
+ echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))'
endef
-.PHONY: xenversion
+$(version_h): FORCE
+ $(call filechk,version.h)
+ $(Q)rm -f $(old_version_h)
+
+###
+# Cleaning is done on three levels.
+# make clean Delete most generated files
+# Leave enough to build external modules
+# make mrproper Delete the current configuration, and all generated files
+# make distclean Remove editor backup files, patch leftover files and the like
+
+# Directories & files removed with 'make clean'
+CLEAN_DIRS += include/ksym
+CLEAN_FILES += modules.builtin.modinfo
+
+# Directories & files removed with 'make mrproper'
+MRPROPER_DIRS += include/config include/generated \
+ arch/$(SRCARCH)/include/generated .tmp_objdiff
+MRPROPER_FILES += .config .config.old .version \
+ Module.symvers \
+ signing_key.pem signing_key.priv signing_key.x509 \
+ x509.genkey extra_certificates signing_key.x509.keyid \
+ signing_key.x509.signer vmlinux-gdb.py
+
+# Directories & files removed with 'make distclean'
+DISTCLEAN_DIRS +=
+DISTCLEAN_FILES += tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS
+
+# clean - Delete most, but leave enough to build external modules
+#
+clean: rm-dirs := $(CLEAN_DIRS)
+clean: rm-files := $(CLEAN_FILES)
+clean-dirs := $(addprefix _clean_, . $(vmlinux-alldirs))
+
+PHONY += $(clean-dirs) clean archclean vmlinuxclean
+$(clean-dirs):
+ $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
+
+vmlinuxclean:
+ $(Q)$(CONFIG_SHELL) $(srctree)/scripts/link-vmlinux.sh clean
+ $(Q)$(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) clean)
+
+clean: archclean vmlinuxclean
+
+# mrproper - Delete all generated files, including .config
+#
+mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS))
+mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
+mrproper-dirs := $(addprefix _mrproper_,scripts)
+
+PHONY += $(mrproper-dirs) mrproper
+$(mrproper-dirs):
+ $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
+
+mrproper: clean $(mrproper-dirs)
+ $(call cmd,rmdirs)
+ $(call cmd,rmfiles)
+
+# distclean
+#
+distclean: rm-dirs := $(wildcard $(DISTCLEAN_DIRS))
+distclean: rm-files := $(wildcard $(DISTCLEAN_FILES))
+
+PHONY += distclean
+
+distclean: mrproper
+ $(call cmd,rmdirs)
+ $(call cmd,rmfiles)
+ @find $(srctree) $(RCS_FIND_IGNORE) \
+ \( -name '*.orig' -o -name '*.rej' -o -name '*~' \
+ -o -name '*.bak' -o -name '#*#' -o -name '*%' \
+ -o -name 'core' \) \
+ -type f -print | xargs rm -f
+
+
+# Brief documentation of the typical targets used
+# ---------------------------------------------------------------------------
+
+boards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig)
+boards := $(sort $(notdir $(boards)))
+board-dirs := $(dir $(wildcard
$(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig))
+board-dirs := $(sort $(notdir $(board-dirs:/=)))
+
+PHONY += help
+help:
+ @echo 'Cleaning targets:'
+ @echo ' clean - Remove most generated files but keep the
config and'
+ @echo ' enough build support to build external
modules'
+ @echo ' mrproper - Remove all generated files + config +
various backup files'
+ @echo ' distclean - mrproper + remove editor backup and patch
files'
+ @echo ''
+ @echo 'Configuration targets:'
+ @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
+ @echo ''
+ @echo 'Other generic targets:'
+ @echo ' all - Build all targets marked with [*]'
+ @echo '* vmlinux - Build the bare kernel'
+ @echo '* modules - Build all modules'
+ @echo ' modules_install - Install all modules to INSTALL_MOD_PATH
(default: /)'
+ @echo ' dir/ - Build all files in dir and below'
+ @echo ' dir/file.[ois] - Build specified target only'
+ @echo ' dir/file.ll - Build the LLVM assembly file'
+ @echo ' (requires compiler support for LLVM
assembly generation)'
+ @echo ' dir/file.lst - Build specified mixed source/assembly
target only'
+ @echo ' (requires a recent binutils and recent
build (System.map))'
+ @echo ' dir/file.ko - Build module including final link'
+ @echo ' modules_prepare - Set up for building external modules'
+ @echo ' tags/TAGS - Generate tags file for editors'
+ @echo ' cscope - Generate cscope index'
+ @echo ' gtags - Generate GNU GLOBAL index'
+ @echo ' kernelrelease - Output the release version string (use with
make -s)'
+ @echo ' kernelversion - Output the version stored in Makefile (use
with make -s)'
+ @echo ' image_name - Output the image name (use with make -s)'
+ @echo ' headers_install - Install sanitised kernel headers to
INSTALL_HDR_PATH'; \
+ echo ' (default: $(INSTALL_HDR_PATH))'; \
+ echo ''
+ @echo 'Static analysers:'
+ @echo ' checkstack - Generate a list of stack hogs'
+ @echo ' namespacecheck - Name space analysis on compiled kernel'
+ @echo ' versioncheck - Sanity check on version.h usage'
+ @echo ' includecheck - Check for duplicate included header files'
+ @echo ' export_report - List the usages of all exported symbols'
+ @echo ' headers_check - Sanity check on exported headers'
+ @echo ' headerdep - Detect inclusion cycles in headers'
+ @echo ' coccicheck - Check with Coccinelle'
+ @echo ''
+ @echo 'Kernel selftest:'
+ @echo ' kselftest - Build and run kernel selftest (run as root)'
+ @echo ' Build, install, and boot kernel before'
+ @echo ' running kselftest on it'
+ @echo ' kselftest-clean - Remove all generated kselftest files'
+ @echo ' kselftest-merge - Merge all the config dependencies of
kselftest to existing'
+ @echo ' .config.'
+ @echo ''
+ @$(if $(dtstree), \
+ echo 'Devicetree:'; \
+ echo '* dtbs - Build device tree blobs for enabled
boards'; \
+ echo ' dtbs_install - Install dtbs to
$(INSTALL_DTBS_PATH)'; \
+ echo '')
+
+ @echo 'Userspace tools targets:'
+ @echo ' use "make tools/help"'
+ @echo ' or "cd tools; make help"'
+ @echo ''
+ @echo 'Kernel packaging:'
+ @$(MAKE) $(build)=$(package-dir) help
+ @echo ''
+ @echo 'Documentation targets:'
+ @$(MAKE) -f $(srctree)/Documentation/Makefile dochelp
+ @echo ''
+ @echo 'Architecture specific targets ($(SRCARCH)):'
+ @$(if $(archhelp),$(archhelp),\
+ echo ' No architecture specific help defined for $(SRCARCH)')
+ @echo ''
+ @$(if $(boards), \
+ $(foreach b, $(boards), \
+ printf " %-24s - Build for %s\\n" $(b) $(subst
_defconfig,,$(b));) \
+ echo '')
+ @$(if $(board-dirs), \
+ $(foreach b, $(board-dirs), \
+ printf " %-16s - Show %s-specific targets\\n" help-$(b) $(b);)
\
+ printf " %-16s - Show all of the above\\n" help-boards; \
+ echo '')
+
+ @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose
build'
+ @echo ' make V=2 [targets] 2 => give reason for rebuild of target'
+ @echo ' make O=dir [targets] Locate all output files in "dir",
including .config'
+ @echo ' make C=1 [targets] Check re-compiled c source with $$CHECK
(sparse by default)'
+ @echo ' make C=2 [targets] Force check of all c source with $$CHECK'
+ @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount
sections'
+ @echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where'
+ @echo ' 1: warnings which may be relevant and do not
occur too often'
+ @echo ' 2: warnings which occur quite often but may
still be relevant'
+ @echo ' 3: more obscure warnings, can most likely be
ignored'
+ @echo ' Multiple levels can be combined with W=12 or
W=123'
+ @echo ''
+ @echo 'Execute "make" or "make all" to build all targets marked with
[*] '
+ @echo 'For further info see the ./README file'
+
+
+help-board-dirs := $(addprefix help-,$(board-dirs))
+
+help-boards: $(help-board-dirs)
+
+boards-per-dir = $(sort $(notdir $(wildcard
$(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig)))
+
+$(help-board-dirs): help-%:
+ @echo 'Architecture specific targets ($(SRCARCH) $*):'
+ @$(if $(boards-per-dir), \
+ $(foreach b, $(boards-per-dir), \
+ printf " %-24s - Build for %s\\n" $*/$(b) $(subst
_defconfig,,$(b));) \
+ echo '')
+
+
+# Misc
+# ---------------------------------------------------------------------------
+
+clean: $(clean-dirs)
+ $(call cmd,rmdirs)
+ $(call cmd,rmfiles)
+ @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \
+ \( -name '*.[aios]' -o -name '*.ko' -o -name '.*.cmd' \
+ -o -name '*.ko.*' \
+ -o -name '*.dtb' -o -name '*.dtb.S' -o -name '*.dt.yaml' \
+ -o -name '*.dwo' -o -name '*.lst' \
+ -o -name '*.su' -o -name '*.mod' \
+ -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
+ -o -name '*.lex.c' -o -name '*.tab.[ch]' \
+ -o -name '*.asn1.[ch]' \
+ -o -name '*.symtypes' -o -name 'modules.order' \
+ -o -name modules.builtin -o -name '.tmp_*.o.*' \
+ -o -name '*.c.[012]*.*' \
+ -o -name '*.ll' \
+ -o -name '*.gcno' \) -type f -print | xargs rm -f
+
+# Generate tags for editors
+# ---------------------------------------------------------------------------
+quiet_cmd_tags = GEN $@
+ cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@
+
+tags TAGS cscope gtags: FORCE
+ $(call cmd,tags)
+
+# Scripts to check various things for consistency
+# ---------------------------------------------------------------------------
+
+PHONY += includecheck versioncheck
+
+includecheck:
+ find $(srctree)/* $(RCS_FIND_IGNORE) \
+ -name '*.[hcS]' -type f -print | sort \
+ | xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl
+
+versioncheck:
+ find $(srctree)/* $(RCS_FIND_IGNORE) \
+ -name '*.[hcS]' -type f -print | sort \
+ | xargs $(PERL) -w $(srctree)/scripts/checkversion.pl
+
+PHONY += xenversion image_name
+
xenversion:
@echo $(XEN_FULLVERSION)
-.PHONY: _TAGS
-_TAGS:
- set -e; rm -f TAGS; \
- $(call set_exuberant_flags,etags); \
- $(all_sources) | xargs etags $$exuberant_flags -a
-
-.PHONY: _tags
-_tags:
- set -e; rm -f tags; \
- $(call set_exuberant_flags,ctags); \
- $(all_sources) | xargs ctags $$exuberant_flags -a
-
-.PHONY: _gtags
-_gtags:
- set -e; rm -f GTAGS GSYMS GPATH GRTAGS
- $(all_sources) | gtags -f -
-
-.PHONY: _cscope
-_cscope:
- $(all_sources) > cscope.files
- cscope -k -b -q
-
-.PHONY: _MAP
-_MAP:
- $(NM) -n $(TARGET)-syms | grep -v '\(compiled\)\|\(\.o$$\)\|\( [aUw]
\)\|\(\.\.ng$$\)\|\(LASH[RL]DI\)' > System.map
-
-.PHONY: FORCE
-FORCE:
-
-%.o %.i %.s: %.c FORCE
- $(MAKE) -f $(BASEDIR)/Rules.mk -C $(*D) $(@F)
+image_name:
+ @echo $(KBUILD_IMAGE)
-%.o %.s: %.S FORCE
- $(MAKE) -f $(BASEDIR)/Rules.mk -C $(*D) $(@F)
+# Single targets
+# ---------------------------------------------------------------------------
+# Single targets are compatible with:
+# - build with mixed source and output
+# - build with separate output dir 'make O=...'
+#
+# target-dir => where to store outputfile
+# build-dir => directory in kernel source tree to use
-%/: FORCE
- $(MAKE) -f $(BASEDIR)/Rules.mk -C $* built_in.o built_in_bin.o
+build-target = $@
+build-dir = $(patsubst %/,%,$(dir $(build-target)))
-build-intermediate = $(eval $(call build-intermediate-closure,$(1)))
-define build-intermediate-closure
-$(1): FORCE
- $(MAKE) -f $(BASEDIR)/Rules.mk -C $$(@D) $$(@F)
-endef
+%.i: prepare FORCE
+ $(Q)$(MAKE) $(build)=$(build-dir) $(build-target)
+%.ll: prepare FORCE
+ $(Q)$(MAKE) $(build)=$(build-dir) $(build-target)
+%.lst: prepare FORCE
+ $(Q)$(MAKE) $(build)=$(build-dir) $(build-target)
+%.o: prepare FORCE
+ $(Q)$(MAKE) $(build)=$(build-dir) $(build-target)
+%.s: prepare FORCE
+ $(Q)$(MAKE) $(build)=$(build-dir) $(build-target)
+%.symtypes: prepare FORCE
+ $(Q)$(MAKE) $(build)=$(build-dir) $(build-target)
-$(foreach base,arch/x86/mm/guest_walk_% \
- arch/x86/mm/hap/guest_walk_%level \
- arch/x86/mm/shadow/guest_%, \
- $(foreach ext,o i s,$(call build-intermediate,$(base).$(ext))))
+# FIXME Should go into a make.lib or something
+# ===========================================================================
-kconfig := oldconfig config menuconfig defconfig \
- nconfig xconfig gconfig savedefconfig listnewconfig olddefconfig \
- randconfig $(notdir $(wildcard arch/$(SRCARCH)/configs/*_defconfig))
-.PHONY: $(kconfig)
-$(kconfig):
- $(MAKE) -f $(BASEDIR)/tools/kconfig/Makefile.kconfig ARCH=$(ARCH)
SRCARCH=$(SRCARCH) HOSTCC="$(HOSTCC)" HOSTCXX="$(HOSTCXX)" $@
+quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs)))
+ cmd_rmdirs = rm -rf $(rm-dirs)
-include/config/%.conf: include/config/auto.conf.cmd $(KCONFIG_CONFIG)
- $(MAKE) -f $(BASEDIR)/tools/kconfig/Makefile.kconfig ARCH=$(ARCH)
SRCARCH=$(SRCARCH) HOSTCC="$(HOSTCC)" HOSTCXX="$(HOSTCXX)" syncconfig
+quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard
$(rm-files)))
+ cmd_rmfiles = rm -f $(rm-files)
-# Allow people to just run `make` as before and not force them to configure
-$(KCONFIG_CONFIG):
- $(MAKE) -f $(BASEDIR)/tools/kconfig/Makefile.kconfig ARCH=$(ARCH)
SRCARCH=$(SRCARCH) HOSTCC="$(HOSTCC)" HOSTCXX="$(HOSTCXX)" defconfig
+# read saved command lines for existing targets
+existing-targets := $(wildcard $(sort $(targets)))
-# Break the dependency chain for the first run
-include/config/auto.conf.cmd: ;
+-include $(foreach f,$(existing-targets),$(dir $(f)).$(notdir $(f)).cmd)
--include $(BASEDIR)/include/config/auto.conf.cmd
+endif # ifeq ($(config-targets),1)
+endif # ifeq ($(mixed-targets),1)
+endif # need-sub-make
-.PHONY: cloc
-cloc:
- $(eval tmpfile := $(shell mktemp))
- $(foreach f, $(shell find $(BASEDIR) -name *.o.d), \
- $(eval path := $(dir $(f))) \
- $(eval names := $(shell grep -o "[a-zA-Z0-9_/-]*\.[cS]" $(f))) \
- $(foreach sf, $(names), \
- $(shell if test -f $(path)/$(sf) ; then echo
$(path)/$(sf) >> $(tmpfile); fi;)))
- cloc --list-file=$(tmpfile)
- rm $(tmpfile)
+PHONY += FORCE
+FORCE:
+# Declare the contents of the PHONY variable as phony. We keep that
+# information in a variable so we can use it in if_changed and friends.
+.PHONY: $(PHONY)
--
Anthony PERARD
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