| 1 | VERSION = 1
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| 2 | PATCHLEVEL = 25
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| 3 | SUBLEVEL = 1
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| 4 | EXTRAVERSION =
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| 5 | NAME = Unnamed
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| 6 |
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| 7 | # *DOCUMENTATION*
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| 8 | # To see a list of typical targets execute "make help"
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| 9 | # More info can be located in ./README
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| 10 | # Comments in this file are targeted only to the developer, do not
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| 11 | # expect to learn how to build the kernel reading this file.
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| 12 |
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| 13 | # Do not print "Entering directory ..."
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| 14 | MAKEFLAGS += --no-print-directory
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| 15 |
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| 16 | # We are using a recursive build, so we need to do a little thinking
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| 17 | # to get the ordering right.
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| 18 | #
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| 19 | # Most importantly: sub-Makefiles should only ever modify files in
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| 20 | # their own directory. If in some directory we have a dependency on
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| 21 | # a file in another dir (which doesn't happen often, but it's often
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| 22 | # unavoidable when linking the built-in.o targets which finally
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| 23 | # turn into busybox), we will call a sub make in that other dir, and
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| 24 | # after that we are sure that everything which is in that other dir
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| 25 | # is now up to date.
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| 26 | #
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| 27 | # The only cases where we need to modify files which have global
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| 28 | # effects are thus separated out and done before the recursive
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| 29 | # descending is started. They are now explicitly listed as the
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| 30 | # prepare rule.
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| 31 |
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| 32 | # To put more focus on warnings, be less verbose as default
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| 33 | # Use 'make V=1' to see the full commands
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| 34 |
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| 35 | ifdef V
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| 36 | ifeq ("$(origin V)", "command line")
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| 37 | KBUILD_VERBOSE = $(V)
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| 38 | endif
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| 39 | endif
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| 40 | ifndef KBUILD_VERBOSE
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| 41 | KBUILD_VERBOSE = 0
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| 42 | endif
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| 43 |
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| 44 | # Call sparse as part of compilation of C files
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| 45 | # Use 'make C=1' to enable sparse checking
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| 46 |
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| 47 | ifdef C
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| 48 | ifeq ("$(origin C)", "command line")
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| 49 | KBUILD_CHECKSRC = $(C)
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| 50 | endif
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| 51 | endif
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| 52 | ifndef KBUILD_CHECKSRC
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| 53 | KBUILD_CHECKSRC = 0
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| 54 | endif
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| 55 |
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| 56 | # Use make M=dir to specify directory of external module to build
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| 57 | # Old syntax make ... SUBDIRS=$PWD is still supported
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| 58 | # Setting the environment variable KBUILD_EXTMOD take precedence
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| 59 | ifdef SUBDIRS
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| 60 | KBUILD_EXTMOD ?= $(SUBDIRS)
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| 61 | endif
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| 62 | ifdef M
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| 63 | ifeq ("$(origin M)", "command line")
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| 64 | KBUILD_EXTMOD := $(M)
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| 65 | endif
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| 66 | endif
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| 67 |
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| 68 |
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| 69 | # kbuild supports saving output files in a separate directory.
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| 70 | # To locate output files in a separate directory two syntaxes are supported.
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| 71 | # In both cases the working directory must be the root of the kernel src.
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| 72 | # 1) O=
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| 73 | # Use "make O=dir/to/store/output/files/"
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| 74 | #
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| 75 | # 2) Set KBUILD_OUTPUT
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| 76 | # Set the environment variable KBUILD_OUTPUT to point to the directory
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| 77 | # where the output files shall be placed.
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| 78 | # export KBUILD_OUTPUT=dir/to/store/output/files/
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| 79 | # make
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| 80 | #
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| 81 | # The O= assignment takes precedence over the KBUILD_OUTPUT environment
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| 82 | # variable.
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| 83 |
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| 84 |
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| 85 | # KBUILD_SRC is set on invocation of make in OBJ directory
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| 86 | # KBUILD_SRC is not intended to be used by the regular user (for now)
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| 87 | ifeq ($(KBUILD_SRC),)
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| 88 |
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| 89 | # OK, Make called in directory where kernel src resides
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| 90 | # Do we want to locate output files in a separate directory?
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| 91 | ifdef O
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| 92 | ifeq ("$(origin O)", "command line")
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| 93 | KBUILD_OUTPUT := $(O)
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| 94 | endif
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| 95 | endif
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| 96 |
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| 97 | # That's our default target when none is given on the command line
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| 98 | PHONY := _all
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| 99 | _all:
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| 100 |
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| 101 | ifneq ($(KBUILD_OUTPUT),)
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| 102 | # Invoke a second make in the output directory, passing relevant variables
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| 103 | # check that the output directory actually exists
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| 104 | saved-output := $(KBUILD_OUTPUT)
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| 105 | KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd)
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| 106 | $(if $(KBUILD_OUTPUT),, \
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| 107 | $(error output directory "$(saved-output)" does not exist))
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| 108 |
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| 109 | PHONY += $(MAKECMDGOALS)
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| 110 |
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| 111 | $(filter-out _all,$(MAKECMDGOALS)) _all:
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| 112 | $(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \
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| 113 | KBUILD_SRC=$(CURDIR) \
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| 114 | KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile $@
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| 115 |
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| 116 | # Leave processing to above invocation of make
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| 117 | skip-makefile := 1
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| 118 | endif # ifneq ($(KBUILD_OUTPUT),)
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| 119 | endif # ifeq ($(KBUILD_SRC),)
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| 120 |
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| 121 | # We process the rest of the Makefile if this is the final invocation of make
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| 122 | ifeq ($(skip-makefile),)
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| 123 |
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| 124 | # If building an external module we do not care about the all: rule
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| 125 | # but instead _all depend on modules
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| 126 | PHONY += all
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| 127 | ifeq ($(KBUILD_EXTMOD),)
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| 128 | _all: all
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| 129 | else
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| 130 | _all: modules
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| 131 | endif
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| 132 |
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| 133 | srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR))
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| 134 | TOPDIR := $(srctree)
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| 135 | # FIXME - TOPDIR is obsolete, use srctree/objtree
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| 136 | objtree := $(CURDIR)
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| 137 | src := $(srctree)
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| 138 | obj := $(objtree)
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| 139 |
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| 140 | VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD))
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| 141 |
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| 142 | export srctree objtree VPATH TOPDIR
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| 143 |
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| 144 |
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| 145 | # Cross compiling and selecting different set of gcc/bin-utils
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| 146 | # ---------------------------------------------------------------------------
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| 147 | #
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| 148 | # When performing cross compilation for other architectures ARCH shall be set
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| 149 | # to the target architecture. (See arch/* for the possibilities).
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| 150 | # ARCH can be set during invocation of make:
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| 151 | # make ARCH=ia64
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| 152 | # Another way is to have ARCH set in the environment.
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| 153 | # The default ARCH is the host where make is executed.
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| 154 |
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| 155 | # CROSS_COMPILE specify the prefix used for all executables used
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| 156 | # during compilation. Only gcc and related bin-utils executables
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| 157 | # are prefixed with $(CROSS_COMPILE).
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| 158 | # CROSS_COMPILE can be set on the command line
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| 159 | # make CROSS_COMPILE=ia64-linux-
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| 160 | # Alternatively CROSS_COMPILE can be set in the environment.
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| 161 | # Default value for CROSS_COMPILE is not to prefix executables
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| 162 | # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile
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| 163 |
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| 164 | CROSS_COMPILE ?=
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| 165 | # bbox: we may have CONFIG_CROSS_COMPILER_PREFIX in .config,
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| 166 | # and it has not been included yet... thus using an awkward syntax.
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| 167 | ifeq ($(CROSS_COMPILE),)
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| 168 | CROSS_COMPILE := $(shell grep ^CONFIG_CROSS_COMPILER_PREFIX .config 2>/dev/null)
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| 169 | CROSS_COMPILE := $(subst CONFIG_CROSS_COMPILER_PREFIX=,,$(CROSS_COMPILE))
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| 170 | CROSS_COMPILE := $(subst ",,$(CROSS_COMPILE))
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| 171 | #")
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| 172 | endif
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| 173 |
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| 174 | # SUBARCH tells the usermode build what the underlying arch is. That is set
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| 175 | # first, and if a usermode build is happening, the "ARCH=um" on the command
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| 176 | # line overrides the setting of ARCH below. If a native build is happening,
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| 177 | # then ARCH is assigned, getting whatever value it gets normally, and
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| 178 | # SUBARCH is subsequently ignored.
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| 179 |
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| 180 | ifneq ($(CROSS_COMPILE),)
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| 181 | SUBARCH := $(shell echo $(CROSS_COMPILE) | cut -d- -f1)
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| 182 | else
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| 183 | SUBARCH := $(shell uname -m)
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| 184 | endif
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| 185 | SUBARCH := $(shell echo $(SUBARCH) | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ \
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| 186 | -e s/arm.*/arm/ -e s/sa110/arm/ \
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| 187 | -e s/s390x/s390/ -e s/parisc64/parisc/ \
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| 188 | -e s/ppc.*/powerpc/ -e s/mips.*/mips/ )
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| 189 |
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| 190 | ARCH ?= $(SUBARCH)
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| 191 |
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| 192 | # Architecture as present in compile.h
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| 193 | UTS_MACHINE := $(ARCH)
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| 194 |
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| 195 | # SHELL used by kbuild
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| 196 | CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
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| 197 | else if [ -x /bin/bash ]; then echo /bin/bash; \
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| 198 | else echo sh; fi ; fi)
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| 199 |
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| 200 | # Decide whether to build built-in, modular, or both.
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| 201 | # Normally, just do built-in.
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| 202 |
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| 203 | KBUILD_MODULES :=
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| 204 | KBUILD_BUILTIN := 1
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| 205 |
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| 206 | # If we have only "make modules", don't compile built-in objects.
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| 207 | # When we're building modules with modversions, we need to consider
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| 208 | # the built-in objects during the descend as well, in order to
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| 209 | # make sure the checksums are uptodate before we record them.
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| 210 |
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| 211 | ifeq ($(MAKECMDGOALS),modules)
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| 212 | KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1)
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| 213 | endif
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| 214 |
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| 215 | # If we have "make <whatever> modules", compile modules
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| 216 | # in addition to whatever we do anyway.
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| 217 | # Just "make" or "make all" shall build modules as well
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| 218 |
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| 219 | ifneq ($(filter all _all modules,$(MAKECMDGOALS)),)
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| 220 | KBUILD_MODULES := 1
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| 221 | endif
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| 222 |
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| 223 | ifeq ($(MAKECMDGOALS),)
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| 224 | KBUILD_MODULES := 1
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| 225 | endif
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| 226 |
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| 227 | export KBUILD_MODULES KBUILD_BUILTIN
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| 228 | export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD
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| 229 |
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| 230 | # Beautify output
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| 231 | # ---------------------------------------------------------------------------
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| 232 | #
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| 233 | # Normally, we echo the whole command before executing it. By making
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| 234 | # that echo $($(quiet)$(cmd)), we now have the possibility to set
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| 235 | # $(quiet) to choose other forms of output instead, e.g.
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| 236 | #
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| 237 | # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@
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| 238 | # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $<
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| 239 | #
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| 240 | # If $(quiet) is empty, the whole command will be printed.
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| 241 | # If it is set to "quiet_", only the short version will be printed.
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| 242 | # If it is set to "silent_", nothing wil be printed at all, since
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| 243 | # the variable $(silent_cmd_cc_o_c) doesn't exist.
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| 244 | #
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| 245 | # A simple variant is to prefix commands with $(Q) - that's useful
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| 246 | # for commands that shall be hidden in non-verbose mode.
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| 247 | #
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| 248 | # $(Q)ln $@ :<
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| 249 | #
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| 250 | # If KBUILD_VERBOSE equals 0 then the above command will be hidden.
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| 251 | # If KBUILD_VERBOSE equals 1 then the above command is displayed.
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| 252 |
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| 253 | ifeq ($(KBUILD_VERBOSE),1)
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| 254 | quiet =
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| 255 | Q =
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| 256 | else
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| 257 | quiet=quiet_
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| 258 | Q = @
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| 259 | endif
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| 260 |
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| 261 | # If the user is running make -s (silent mode), suppress echoing of
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| 262 | # commands
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| 263 |
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| 264 | ifneq ($(findstring s,$(MAKEFLAGS)),)
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| 265 | quiet=silent_
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| 266 | endif
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| 267 |
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| 268 | export quiet Q KBUILD_VERBOSE
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| 269 |
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| 270 |
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| 271 | # Look for make include files relative to root of kernel src
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| 272 | MAKEFLAGS += --include-dir=$(srctree)
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| 273 |
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| 274 | HOSTCC = gcc
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| 275 | HOSTCXX = g++
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| 276 | HOSTCFLAGS :=
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| 277 | HOSTCXXFLAGS :=
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| 278 | # We need some generic definitions
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| 279 | include $(srctree)/scripts/Kbuild.include
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| 280 |
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| 281 | HOSTCFLAGS += $(call hostcc-option,-Wall -Wstrict-prototypes -O2 -fomit-frame-pointer,)
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| 282 | HOSTCXXFLAGS += -O2
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| 283 |
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| 284 | # For maximum performance (+ possibly random breakage, uncomment
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| 285 | # the following)
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| 286 |
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| 287 | MAKEFLAGS += -rR
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| 288 |
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| 289 | # Make variables (CC, etc...)
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| 290 |
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| 291 | AS = $(CROSS_COMPILE)as
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| 292 | CC = $(CROSS_COMPILE)gcc
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| 293 | LD = $(CC) -nostdlib
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| 294 | CPP = $(CC) -E
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| 295 | AR = $(CROSS_COMPILE)ar
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| 296 | NM = $(CROSS_COMPILE)nm
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| 297 | STRIP = $(CROSS_COMPILE)strip
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| 298 | OBJCOPY = $(CROSS_COMPILE)objcopy
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| 299 | OBJDUMP = $(CROSS_COMPILE)objdump
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| 300 | PKG_CONFIG ?= $(CROSS_COMPILE)pkg-config
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| 301 | AWK = awk
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| 302 | GENKSYMS = scripts/genksyms/genksyms
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| 303 | DEPMOD = /sbin/depmod
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| 304 | KALLSYMS = scripts/kallsyms
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| 305 | PERL = perl
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| 306 | CHECK = sparse
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| 307 |
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| 308 | CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ -Wbitwise $(CF)
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| 309 | MODFLAGS = -DMODULE
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| 310 | CFLAGS_MODULE = $(MODFLAGS)
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| 311 | AFLAGS_MODULE = $(MODFLAGS)
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| 312 | LDFLAGS_MODULE = -r
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| 313 | CFLAGS_KERNEL =
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| 314 | AFLAGS_KERNEL =
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| 315 |
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| 316 |
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| 317 | # Use LINUXINCLUDE when you must reference the include/ directory.
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| 318 | # Needed to be compatible with the O= option
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| 319 | CFLAGS := $(CFLAGS)
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| 320 | # Added only to final link stage of busybox binary
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|---|
| 321 | CFLAGS_busybox := $(CFLAGS_busybox)
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| 322 | CPPFLAGS := $(CPPFLAGS)
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| 323 | AFLAGS := $(AFLAGS)
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| 324 | LDFLAGS := $(LDFLAGS)
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| 325 | LDLIBS :=
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| 326 |
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| 327 | # Read KERNELRELEASE from .kernelrelease (if it exists)
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| 328 | KERNELRELEASE = $(shell cat .kernelrelease 2> /dev/null)
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|---|
| 329 | KERNELVERSION = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)
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| 330 |
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| 331 | export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION \
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| 332 | ARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC \
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| 333 | CPP AR NM STRIP OBJCOPY OBJDUMP MAKE AWK GENKSYMS PERL UTS_MACHINE \
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| 334 | HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS
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|---|
| 335 |
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|---|
| 336 | export CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS
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|---|
| 337 | export CFLAGS CFLAGS_KERNEL CFLAGS_MODULE
|
|---|
| 338 | export AFLAGS AFLAGS_KERNEL AFLAGS_MODULE
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|---|
| 339 | export FLTFLAGS
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| 340 |
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| 341 | # When compiling out-of-tree modules, put MODVERDIR in the module
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| 342 | # tree rather than in the kernel tree. The kernel tree might
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| 343 | # even be read-only.
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|---|
| 344 | export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions
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| 345 |
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|---|
| 346 | # Files to ignore in find ... statements
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|---|
| 347 |
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|---|
| 348 | 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
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| 349 | export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn --exclude CVS --exclude .pc --exclude .hg --exclude .git
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| 350 |
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| 351 | # ===========================================================================
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|---|
| 352 | # Rules shared between *config targets and build targets
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|---|
| 353 |
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|---|
| 354 | # Basic helpers built in scripts/
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|---|
| 355 | PHONY += scripts_basic
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|---|
| 356 | scripts_basic:
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|---|
| 357 | $(Q)$(MAKE) $(build)=scripts/basic
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|---|
| 358 |
|
|---|
| 359 | # To avoid any implicit rule to kick in, define an empty command.
|
|---|
| 360 | scripts/basic/%: scripts_basic ;
|
|---|
| 361 |
|
|---|
| 362 | # This target generates Kbuild's and Config.in's from *.c files
|
|---|
| 363 | PHONY += gen_build_files
|
|---|
| 364 | gen_build_files: $(wildcard $(srctree)/*/*.c) $(wildcard $(srctree)/*/*/*.c)
|
|---|
| 365 | $(Q)$(srctree)/scripts/gen_build_files.sh $(srctree) $(objtree)
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| 366 |
|
|---|
| 367 | # bbox: we have helpers in applets/
|
|---|
| 368 | # we depend on scripts_basic, since scripts/basic/fixdep
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|---|
| 369 | # must be built before any other host prog
|
|---|
| 370 | PHONY += applets_dir
|
|---|
| 371 | applets_dir: scripts_basic gen_build_files
|
|---|
| 372 | $(Q)$(MAKE) $(build)=applets
|
|---|
| 373 |
|
|---|
| 374 | applets/%: applets_dir ;
|
|---|
| 375 |
|
|---|
| 376 | PHONY += outputmakefile
|
|---|
| 377 | # outputmakefile generates a Makefile in the output directory, if using a
|
|---|
| 378 | # separate output directory. This allows convenient use of make in the
|
|---|
| 379 | # output directory.
|
|---|
| 380 | outputmakefile:
|
|---|
| 381 | ifneq ($(KBUILD_SRC),)
|
|---|
| 382 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
|
|---|
| 383 | $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)
|
|---|
| 384 | endif
|
|---|
| 385 |
|
|---|
| 386 | # To make sure we do not include .config for any of the *config targets
|
|---|
| 387 | # catch them early, and hand them over to scripts/kconfig/Makefile
|
|---|
| 388 | # It is allowed to specify more targets when calling make, including
|
|---|
| 389 | # mixing *config targets and build targets.
|
|---|
| 390 | # For example 'make oldconfig all'.
|
|---|
| 391 | # Detect when mixed targets is specified, and make a second invocation
|
|---|
| 392 | # of make so .config is not included in this case either (for *config).
|
|---|
| 393 |
|
|---|
| 394 | no-dot-config-targets := clean mrproper distclean \
|
|---|
| 395 | cscope TAGS tags help %docs
|
|---|
| 396 | #bbox# check% is removed from above
|
|---|
| 397 |
|
|---|
| 398 | config-targets := 0
|
|---|
| 399 | mixed-targets := 0
|
|---|
| 400 | dot-config := 1
|
|---|
| 401 |
|
|---|
| 402 | ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
|
|---|
| 403 | ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
|
|---|
| 404 | dot-config := 0
|
|---|
| 405 | endif
|
|---|
| 406 | endif
|
|---|
| 407 |
|
|---|
| 408 | ifeq ($(KBUILD_EXTMOD),)
|
|---|
| 409 | ifneq ($(filter config %config,$(MAKECMDGOALS)),)
|
|---|
| 410 | config-targets := 1
|
|---|
| 411 | ifneq ($(filter-out config %config,$(MAKECMDGOALS)),)
|
|---|
| 412 | mixed-targets := 1
|
|---|
| 413 | endif
|
|---|
| 414 | endif
|
|---|
| 415 | endif
|
|---|
| 416 |
|
|---|
| 417 | ifeq ($(mixed-targets),1)
|
|---|
| 418 | # ===========================================================================
|
|---|
| 419 | # We're called with mixed targets (*config and build targets).
|
|---|
| 420 | # Handle them one by one.
|
|---|
| 421 |
|
|---|
| 422 | %:: FORCE
|
|---|
| 423 | $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= $@
|
|---|
| 424 |
|
|---|
| 425 | else
|
|---|
| 426 | ifeq ($(config-targets),1)
|
|---|
| 427 | # ===========================================================================
|
|---|
| 428 | # *config targets only - make sure prerequisites are updated, and descend
|
|---|
| 429 | # in scripts/kconfig to make the *config target
|
|---|
| 430 |
|
|---|
| 431 | # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed.
|
|---|
| 432 | # KBUILD_DEFCONFIG may point out an alternative default configuration
|
|---|
| 433 | # used for 'make defconfig'
|
|---|
| 434 | -include $(srctree)/arch/$(ARCH)/Makefile
|
|---|
| 435 | export KBUILD_DEFCONFIG
|
|---|
| 436 |
|
|---|
| 437 | config: scripts_basic outputmakefile gen_build_files FORCE
|
|---|
| 438 | $(Q)mkdir -p include
|
|---|
| 439 | $(Q)$(MAKE) $(build)=scripts/kconfig $@
|
|---|
| 440 | $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= .kernelrelease
|
|---|
| 441 |
|
|---|
| 442 | %config: scripts_basic outputmakefile gen_build_files FORCE
|
|---|
| 443 | $(Q)mkdir -p include
|
|---|
| 444 | $(Q)$(MAKE) $(build)=scripts/kconfig $@
|
|---|
| 445 | $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= .kernelrelease
|
|---|
| 446 |
|
|---|
| 447 | else
|
|---|
| 448 | # ===========================================================================
|
|---|
| 449 | # Build targets only - this includes busybox, arch specific targets, clean
|
|---|
| 450 | # targets and others. In general all targets except *config targets.
|
|---|
| 451 |
|
|---|
| 452 | ifeq ($(KBUILD_EXTMOD),)
|
|---|
| 453 | # Additional helpers built in scripts/
|
|---|
| 454 | # Carefully list dependencies so we do not try to build scripts twice
|
|---|
| 455 | # in parallel
|
|---|
| 456 | PHONY += scripts
|
|---|
| 457 | scripts: gen_build_files scripts_basic include/config/MARKER
|
|---|
| 458 | $(Q)$(MAKE) $(build)=$(@)
|
|---|
| 459 |
|
|---|
| 460 | scripts_basic: include/autoconf.h
|
|---|
| 461 |
|
|---|
| 462 | # Objects we will link into busybox / subdirs we need to visit
|
|---|
| 463 | core-y := \
|
|---|
| 464 | applets/ \
|
|---|
| 465 |
|
|---|
| 466 | libs-y := \
|
|---|
| 467 | archival/ \
|
|---|
| 468 | archival/libarchive/ \
|
|---|
| 469 | console-tools/ \
|
|---|
| 470 | coreutils/ \
|
|---|
| 471 | coreutils/libcoreutils/ \
|
|---|
| 472 | debianutils/ \
|
|---|
| 473 | e2fsprogs/ \
|
|---|
| 474 | editors/ \
|
|---|
| 475 | findutils/ \
|
|---|
| 476 | init/ \
|
|---|
| 477 | libbb/ \
|
|---|
| 478 | libpwdgrp/ \
|
|---|
| 479 | loginutils/ \
|
|---|
| 480 | mailutils/ \
|
|---|
| 481 | miscutils/ \
|
|---|
| 482 | modutils/ \
|
|---|
| 483 | networking/ \
|
|---|
| 484 | networking/libiproute/ \
|
|---|
| 485 | networking/udhcp/ \
|
|---|
| 486 | printutils/ \
|
|---|
| 487 | procps/ \
|
|---|
| 488 | runit/ \
|
|---|
| 489 | selinux/ \
|
|---|
| 490 | shell/ \
|
|---|
| 491 | sysklogd/ \
|
|---|
| 492 | util-linux/ \
|
|---|
| 493 | util-linux/volume_id/ \
|
|---|
| 494 |
|
|---|
| 495 | endif # KBUILD_EXTMOD
|
|---|
| 496 |
|
|---|
| 497 | ifeq ($(dot-config),1)
|
|---|
| 498 | # In this section, we need .config
|
|---|
| 499 |
|
|---|
| 500 | # Read in dependencies to all Kconfig* files, make sure to run
|
|---|
| 501 | # oldconfig if changes are detected.
|
|---|
| 502 | -include .kconfig.d
|
|---|
| 503 |
|
|---|
| 504 | -include .config
|
|---|
| 505 |
|
|---|
| 506 | # If .config needs to be updated, it will be done via the dependency
|
|---|
| 507 | # that autoconf has on .config.
|
|---|
| 508 | # To avoid any implicit rule to kick in, define an empty command
|
|---|
| 509 | .config .kconfig.d: ;
|
|---|
| 510 |
|
|---|
| 511 | # Now we can define CFLAGS etc according to .config
|
|---|
| 512 | include $(srctree)/Makefile.flags
|
|---|
| 513 |
|
|---|
| 514 | # If .config is newer than include/autoconf.h, someone tinkered
|
|---|
| 515 | # with it and forgot to run make oldconfig.
|
|---|
| 516 | # If kconfig.d is missing then we are probarly in a cleaned tree so
|
|---|
| 517 | # we execute the config step to be sure to catch updated Kconfig files
|
|---|
| 518 | include/autoconf.h: .kconfig.d .config $(wildcard $(srctree)/*/*.c) $(wildcard $(srctree)/*/*/*.c) | gen_build_files
|
|---|
| 519 | $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig
|
|---|
| 520 |
|
|---|
| 521 | include/usage.h: gen_build_files
|
|---|
| 522 |
|
|---|
| 523 | else
|
|---|
| 524 | # Dummy target needed, because used as prerequisite
|
|---|
| 525 | include/autoconf.h: ;
|
|---|
| 526 | endif
|
|---|
| 527 |
|
|---|
| 528 | # The all: target is the default when no target is given on the
|
|---|
| 529 | # command line.
|
|---|
| 530 | # This allow a user to issue only 'make' to build a kernel including modules
|
|---|
| 531 | # Defaults busybox but it is usually overridden in the arch makefile
|
|---|
| 532 | all: busybox doc
|
|---|
| 533 |
|
|---|
| 534 | -include $(srctree)/arch/$(ARCH)/Makefile
|
|---|
| 535 |
|
|---|
| 536 | # arch Makefile may override CC so keep this after arch Makefile is included
|
|---|
| 537 | #bbox# NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
|
|---|
| 538 | CHECKFLAGS += $(NOSTDINC_FLAGS)
|
|---|
| 539 |
|
|---|
| 540 | # Default kernel image to build when no specific target is given.
|
|---|
| 541 | # KBUILD_IMAGE may be overruled on the commandline or
|
|---|
| 542 | # set in the environment
|
|---|
| 543 | # Also any assignments in arch/$(ARCH)/Makefile take precedence over
|
|---|
| 544 | # this default value
|
|---|
| 545 | export KBUILD_IMAGE ?= busybox
|
|---|
| 546 |
|
|---|
| 547 | #
|
|---|
| 548 | # INSTALL_PATH specifies where to place the updated kernel and system map
|
|---|
| 549 | # images. Default is /boot, but you can set it to other values
|
|---|
| 550 | export INSTALL_PATH ?= /boot
|
|---|
| 551 |
|
|---|
| 552 | #
|
|---|
| 553 | # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory
|
|---|
| 554 | # relocations required by build roots. This is not defined in the
|
|---|
| 555 | # makefile but the argument can be passed to make if needed.
|
|---|
| 556 | #
|
|---|
| 557 |
|
|---|
| 558 | MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE)
|
|---|
| 559 | export MODLIB
|
|---|
| 560 |
|
|---|
| 561 |
|
|---|
| 562 | ifeq ($(KBUILD_EXTMOD),)
|
|---|
| 563 | busybox-dirs := $(patsubst %/,%,$(filter %/, $(core-y) $(core-m) $(libs-y) $(libs-m)))
|
|---|
| 564 |
|
|---|
| 565 | busybox-alldirs := $(sort $(busybox-dirs) $(patsubst %/,%,$(filter %/, \
|
|---|
| 566 | $(core-n) $(core-) $(libs-n) $(libs-) \
|
|---|
| 567 | )))
|
|---|
| 568 |
|
|---|
| 569 | core-y := $(patsubst %/, %/built-in.o, $(core-y))
|
|---|
| 570 | libs-y1 := $(patsubst %/, %/lib.a, $(libs-y))
|
|---|
| 571 | libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y))
|
|---|
| 572 | libs-y := $(libs-y1) $(libs-y2)
|
|---|
| 573 |
|
|---|
| 574 | # Build busybox
|
|---|
| 575 | # ---------------------------------------------------------------------------
|
|---|
| 576 | # busybox is build from the objects selected by $(busybox-init) and
|
|---|
| 577 | # $(busybox-main). Most are built-in.o files from top-level directories
|
|---|
| 578 | # in the kernel tree, others are specified in arch/$(ARCH)Makefile.
|
|---|
| 579 | # Ordering when linking is important, and $(busybox-init) must be first.
|
|---|
| 580 | #
|
|---|
| 581 | # busybox
|
|---|
| 582 | # ^
|
|---|
| 583 | # |
|
|---|
| 584 | # +-< $(busybox-init)
|
|---|
| 585 | # | +--< init/version.o + more
|
|---|
| 586 | # |
|
|---|
| 587 | # +--< $(busybox-main)
|
|---|
| 588 | # | +--< driver/built-in.o mm/built-in.o + more
|
|---|
| 589 | # |
|
|---|
| 590 | # +-< kallsyms.o (see description in CONFIG_KALLSYMS section)
|
|---|
| 591 | #
|
|---|
| 592 | # busybox version (uname -v) cannot be updated during normal
|
|---|
| 593 | # descending-into-subdirs phase since we do not yet know if we need to
|
|---|
| 594 | # update busybox.
|
|---|
| 595 | # Therefore this step is delayed until just before final link of busybox -
|
|---|
| 596 | # except in the kallsyms case where it is done just before adding the
|
|---|
| 597 | # symbols to the kernel.
|
|---|
| 598 | #
|
|---|
| 599 | # System.map is generated to document addresses of all kernel symbols
|
|---|
| 600 |
|
|---|
| 601 | busybox-all := $(core-y) $(libs-y)
|
|---|
| 602 |
|
|---|
| 603 | # Rule to link busybox - also used during CONFIG_KALLSYMS
|
|---|
| 604 | # May be overridden by arch/$(ARCH)/Makefile
|
|---|
| 605 | quiet_cmd_busybox__ ?= LINK $@
|
|---|
| 606 | cmd_busybox__ ?= $(srctree)/scripts/trylink \
|
|---|
| 607 | "$@" \
|
|---|
| 608 | "$(CC)" \
|
|---|
| 609 | "$(CFLAGS) $(CFLAGS_busybox)" \
|
|---|
| 610 | "$(LDFLAGS) $(EXTRA_LDFLAGS)" \
|
|---|
| 611 | "$(core-y)" \
|
|---|
| 612 | "$(libs-y)" \
|
|---|
| 613 | "$(LDLIBS)" \
|
|---|
| 614 | && $(srctree)/scripts/generate_BUFSIZ.sh --post include/common_bufsiz.h
|
|---|
| 615 |
|
|---|
| 616 | # Generate System.map
|
|---|
| 617 | quiet_cmd_sysmap = SYSMAP
|
|---|
| 618 | cmd_sysmap = $(CONFIG_SHELL) $(srctree)/scripts/mksysmap
|
|---|
| 619 |
|
|---|
| 620 | # Link of busybox
|
|---|
| 621 | # If CONFIG_KALLSYMS is set .version is already updated
|
|---|
| 622 | # Generate System.map and verify that the content is consistent
|
|---|
| 623 | # Use + in front of the busybox_version rule to silent warning with make -j2
|
|---|
| 624 | # First command is ':' to allow us to use + in front of the rule
|
|---|
| 625 | define rule_busybox__
|
|---|
| 626 | :
|
|---|
| 627 | $(call cmd,busybox__)
|
|---|
| 628 | $(Q)echo 'cmd_$@ := $(cmd_busybox__)' > $(@D)/.$(@F).cmd
|
|---|
| 629 | endef
|
|---|
| 630 |
|
|---|
| 631 |
|
|---|
| 632 | ifdef CONFIG_KALLSYMS
|
|---|
| 633 | # Generate section listing all symbols and add it into busybox $(kallsyms.o)
|
|---|
| 634 | # It's a three stage process:
|
|---|
| 635 | # o .tmp_busybox1 has all symbols and sections, but __kallsyms is
|
|---|
| 636 | # empty
|
|---|
| 637 | # Running kallsyms on that gives us .tmp_kallsyms1.o with
|
|---|
| 638 | # the right size - busybox version (uname -v) is updated during this step
|
|---|
| 639 | # o .tmp_busybox2 now has a __kallsyms section of the right size,
|
|---|
| 640 | # but due to the added section, some addresses have shifted.
|
|---|
| 641 | # From here, we generate a correct .tmp_kallsyms2.o
|
|---|
| 642 | # o The correct .tmp_kallsyms2.o is linked into the final busybox.
|
|---|
| 643 | # o Verify that the System.map from busybox matches the map from
|
|---|
| 644 | # .tmp_busybox2, just in case we did not generate kallsyms correctly.
|
|---|
| 645 | # o If CONFIG_KALLSYMS_EXTRA_PASS is set, do an extra pass using
|
|---|
| 646 | # .tmp_busybox3 and .tmp_kallsyms3.o. This is only meant as a
|
|---|
| 647 | # temporary bypass to allow the kernel to be built while the
|
|---|
| 648 | # maintainers work out what went wrong with kallsyms.
|
|---|
| 649 |
|
|---|
| 650 | ifdef CONFIG_KALLSYMS_EXTRA_PASS
|
|---|
| 651 | last_kallsyms := 3
|
|---|
| 652 | else
|
|---|
| 653 | last_kallsyms := 2
|
|---|
| 654 | endif
|
|---|
| 655 |
|
|---|
| 656 | kallsyms.o := .tmp_kallsyms$(last_kallsyms).o
|
|---|
| 657 |
|
|---|
| 658 | define verify_kallsyms
|
|---|
| 659 | $(Q)$(if $($(quiet)cmd_sysmap), \
|
|---|
| 660 | echo ' $($(quiet)cmd_sysmap) .tmp_System.map' &&) \
|
|---|
| 661 | $(cmd_sysmap) .tmp_busybox$(last_kallsyms) .tmp_System.map
|
|---|
| 662 | $(Q)cmp -s System.map .tmp_System.map || \
|
|---|
| 663 | (echo Inconsistent kallsyms data; \
|
|---|
| 664 | echo Try setting CONFIG_KALLSYMS_EXTRA_PASS; \
|
|---|
| 665 | rm .tmp_kallsyms* ; /bin/false )
|
|---|
| 666 | endef
|
|---|
| 667 |
|
|---|
| 668 | # Update busybox version before link
|
|---|
| 669 | # Use + in front of this rule to silent warning about make -j1
|
|---|
| 670 | # First command is ':' to allow us to use + in front of this rule
|
|---|
| 671 | cmd_ksym_ld = $(cmd_busybox__)
|
|---|
| 672 | define rule_ksym_ld
|
|---|
| 673 | :
|
|---|
| 674 | +$(call cmd,busybox_version)
|
|---|
| 675 | $(call cmd,busybox__)
|
|---|
| 676 | $(Q)echo 'cmd_$@ := $(cmd_busybox__)' > $(@D)/.$(@F).cmd
|
|---|
| 677 | endef
|
|---|
| 678 |
|
|---|
| 679 | # Generate .S file with all kernel symbols
|
|---|
| 680 | quiet_cmd_kallsyms = KSYM $@
|
|---|
| 681 | cmd_kallsyms = $(NM) -n $< | $(KALLSYMS) \
|
|---|
| 682 | $(if $(CONFIG_KALLSYMS_ALL),--all-symbols) > $@
|
|---|
| 683 |
|
|---|
| 684 | .tmp_kallsyms1.o .tmp_kallsyms2.o .tmp_kallsyms3.o: %.o: %.S scripts FORCE
|
|---|
| 685 | $(call if_changed_dep,as_o_S)
|
|---|
| 686 |
|
|---|
| 687 | .tmp_kallsyms%.S: .tmp_busybox% $(KALLSYMS)
|
|---|
| 688 | $(call cmd,kallsyms)
|
|---|
| 689 |
|
|---|
| 690 | # .tmp_busybox1 must be complete except kallsyms, so update busybox version
|
|---|
| 691 | .tmp_busybox1: $(busybox-lds) $(busybox-all) FORCE
|
|---|
| 692 | $(call if_changed_rule,ksym_ld)
|
|---|
| 693 |
|
|---|
| 694 | .tmp_busybox2: $(busybox-lds) $(busybox-all) .tmp_kallsyms1.o FORCE
|
|---|
| 695 | $(call if_changed,busybox__)
|
|---|
| 696 |
|
|---|
| 697 | .tmp_busybox3: $(busybox-lds) $(busybox-all) .tmp_kallsyms2.o FORCE
|
|---|
| 698 | $(call if_changed,busybox__)
|
|---|
| 699 |
|
|---|
| 700 | # Needs to visit scripts/ before $(KALLSYMS) can be used.
|
|---|
| 701 | $(KALLSYMS): scripts ;
|
|---|
| 702 |
|
|---|
| 703 | # Generate some data for debugging strange kallsyms problems
|
|---|
| 704 | debug_kallsyms: .tmp_map$(last_kallsyms)
|
|---|
| 705 |
|
|---|
| 706 | .tmp_map%: .tmp_busybox% FORCE
|
|---|
| 707 | ($(OBJDUMP) -h $< | $(AWK) '/^ +[0-9]/{print $$4 " 0 " $$2}'; $(NM) $<) | sort > $@
|
|---|
| 708 |
|
|---|
| 709 | .tmp_map3: .tmp_map2
|
|---|
| 710 |
|
|---|
| 711 | .tmp_map2: .tmp_map1
|
|---|
| 712 |
|
|---|
| 713 | endif # ifdef CONFIG_KALLSYMS
|
|---|
| 714 |
|
|---|
| 715 | # busybox image - including updated kernel symbols
|
|---|
| 716 | busybox_unstripped: $(busybox-all) FORCE
|
|---|
| 717 | $(call if_changed_rule,busybox__)
|
|---|
| 718 | $(Q)rm -f .old_version
|
|---|
| 719 |
|
|---|
| 720 | busybox: busybox_unstripped
|
|---|
| 721 | ifeq ($(SKIP_STRIP),y)
|
|---|
| 722 | $(Q)cp $< $@
|
|---|
| 723 | else
|
|---|
| 724 | $(Q)$(STRIP) -s --remove-section=.note --remove-section=.comment \
|
|---|
| 725 | busybox_unstripped -o $@
|
|---|
| 726 | # strip is confused by PIE executable and does not set exec bits
|
|---|
| 727 | $(Q)chmod a+x $@
|
|---|
| 728 | endif
|
|---|
| 729 |
|
|---|
| 730 | # The actual objects are generated when descending,
|
|---|
| 731 | # make sure no implicit rule kicks in
|
|---|
| 732 | $(sort $(busybox-all)): $(busybox-dirs) ;
|
|---|
| 733 |
|
|---|
| 734 | # Handle descending into subdirectories listed in $(busybox-dirs)
|
|---|
| 735 | # Preset locale variables to speed up the build process. Limit locale
|
|---|
| 736 | # tweaks to this spot to avoid wrong language settings when running
|
|---|
| 737 | # make menuconfig etc.
|
|---|
| 738 | # Error messages still appears in the original language
|
|---|
| 739 |
|
|---|
| 740 | PHONY += $(busybox-dirs)
|
|---|
| 741 | $(busybox-dirs): prepare scripts
|
|---|
| 742 | $(Q)$(MAKE) $(build)=$@
|
|---|
| 743 |
|
|---|
| 744 | # Build the kernel release string
|
|---|
| 745 | # The KERNELRELEASE is stored in a file named .kernelrelease
|
|---|
| 746 | # to be used when executing for example make install or make modules_install
|
|---|
| 747 | #
|
|---|
| 748 | # Take the contents of any files called localversion* and the config
|
|---|
| 749 | # variable CONFIG_LOCALVERSION and append them to KERNELRELEASE.
|
|---|
| 750 | # LOCALVERSION from the command line override all of this
|
|---|
| 751 |
|
|---|
| 752 | nullstring :=
|
|---|
| 753 | space := $(nullstring) # end of line
|
|---|
| 754 |
|
|---|
| 755 | ___localver = $(objtree)/localversion* $(srctree)/localversion*
|
|---|
| 756 | __localver = $(sort $(wildcard $(___localver)))
|
|---|
| 757 | # skip backup files (containing '~')
|
|---|
| 758 | _localver = $(foreach f, $(__localver), $(if $(findstring ~, $(f)),,$(f)))
|
|---|
| 759 |
|
|---|
| 760 | localver = $(subst $(space),, \
|
|---|
| 761 | $(shell cat /dev/null $(_localver)) \
|
|---|
| 762 | $(patsubst "%",%,$(CONFIG_LOCALVERSION)))
|
|---|
| 763 |
|
|---|
| 764 | # If CONFIG_LOCALVERSION_AUTO is set scripts/setlocalversion is called
|
|---|
| 765 | # and if the SCM is know a tag from the SCM is appended.
|
|---|
| 766 | # The appended tag is determinded by the SCM used.
|
|---|
| 767 | #
|
|---|
| 768 | # Currently, only git is supported.
|
|---|
| 769 | # Other SCMs can edit scripts/setlocalversion and add the appropriate
|
|---|
| 770 | # checks as needed.
|
|---|
| 771 | ifdef _BB_DISABLED_CONFIG_LOCALVERSION_AUTO
|
|---|
| 772 | _localver-auto = $(shell $(CONFIG_SHELL) \
|
|---|
| 773 | $(srctree)/scripts/setlocalversion $(srctree))
|
|---|
| 774 | localver-auto = $(LOCALVERSION)$(_localver-auto)
|
|---|
| 775 | endif
|
|---|
| 776 |
|
|---|
| 777 | localver-full = $(localver)$(localver-auto)
|
|---|
| 778 |
|
|---|
| 779 | # Store (new) KERNELRELASE string in .kernelrelease
|
|---|
| 780 | kernelrelease = $(KERNELVERSION)$(localver-full)
|
|---|
| 781 | .kernelrelease: FORCE
|
|---|
| 782 | $(Q)rm -f $@
|
|---|
| 783 | $(Q)echo $(kernelrelease) > $@
|
|---|
| 784 |
|
|---|
| 785 |
|
|---|
| 786 | # Things we need to do before we recursively start building the kernel
|
|---|
| 787 | # or the modules are listed in "prepare".
|
|---|
| 788 | # A multi level approach is used. prepareN is processed before prepareN-1.
|
|---|
| 789 | # archprepare is used in arch Makefiles and when processed asm symlink,
|
|---|
| 790 | # version.h and scripts_basic is processed / created.
|
|---|
| 791 |
|
|---|
| 792 | # Listed in dependency order
|
|---|
| 793 | PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3
|
|---|
| 794 |
|
|---|
| 795 | # prepare-all is deprecated, use prepare as valid replacement
|
|---|
| 796 | PHONY += prepare-all
|
|---|
| 797 |
|
|---|
| 798 | # prepare3 is used to check if we are building in a separate output directory,
|
|---|
| 799 | # and if so do:
|
|---|
| 800 | # 1) Check that make has not been executed in the kernel src $(srctree)
|
|---|
| 801 | # 2) Create the include2 directory, used for the second asm symlink
|
|---|
| 802 | prepare3: .kernelrelease
|
|---|
| 803 | ifneq ($(KBUILD_SRC),)
|
|---|
| 804 | @echo ' Using $(srctree) as source for busybox'
|
|---|
| 805 | $(Q)if [ -f $(srctree)/.config ]; then \
|
|---|
| 806 | echo " $(srctree) is not clean, please run 'make mrproper'";\
|
|---|
| 807 | echo " in the '$(srctree)' directory.";\
|
|---|
| 808 | /bin/false; \
|
|---|
| 809 | fi;
|
|---|
| 810 | $(Q)if [ ! -d include2 ]; then mkdir -p include2; fi;
|
|---|
| 811 | $(Q)ln -fsn $(srctree)/include/asm-$(ARCH) include2/asm
|
|---|
| 812 | endif
|
|---|
| 813 |
|
|---|
| 814 | # prepare2 creates a makefile if using a separate output directory
|
|---|
| 815 | prepare2: prepare3 outputmakefile
|
|---|
| 816 |
|
|---|
| 817 | prepare1: prepare2 include/config/MARKER
|
|---|
| 818 | ifneq ($(KBUILD_MODULES),)
|
|---|
| 819 | $(Q)mkdir -p $(MODVERDIR)
|
|---|
| 820 | $(Q)rm -f $(MODVERDIR)/*
|
|---|
| 821 | endif
|
|---|
| 822 |
|
|---|
| 823 | archprepare: prepare1 scripts_basic applets_dir
|
|---|
| 824 |
|
|---|
| 825 | prepare0: archprepare FORCE
|
|---|
| 826 | $(Q)$(MAKE) $(build)=.
|
|---|
| 827 |
|
|---|
| 828 | # All the preparing..
|
|---|
| 829 | prepare prepare-all: prepare0
|
|---|
| 830 |
|
|---|
| 831 | # Leave this as default for preprocessing busybox.lds.S, which is now
|
|---|
| 832 | # done in arch/$(ARCH)/kernel/Makefile
|
|---|
| 833 |
|
|---|
| 834 | export CPPFLAGS_busybox.lds += -P -C -U$(ARCH)
|
|---|
| 835 |
|
|---|
| 836 | # FIXME: The asm symlink changes when $(ARCH) changes. That's
|
|---|
| 837 | # hard to detect, but I suppose "make mrproper" is a good idea
|
|---|
| 838 | # before switching between archs anyway.
|
|---|
| 839 |
|
|---|
| 840 | #bbox# include/asm:
|
|---|
| 841 | #bbox# @echo ' SYMLINK $@ -> include/asm-$(ARCH)'
|
|---|
| 842 | #bbox# $(Q)if [ ! -d include ]; then mkdir -p include; fi;
|
|---|
| 843 | #bbox# @ln -fsn asm-$(ARCH) $@
|
|---|
| 844 |
|
|---|
| 845 | # Split autoconf.h into include/linux/config/*
|
|---|
| 846 | quiet_cmd_gen_bbconfigopts = GEN include/bbconfigopts.h
|
|---|
| 847 | cmd_gen_bbconfigopts = $(srctree)/scripts/mkconfigs include/bbconfigopts.h include/bbconfigopts_bz2.h
|
|---|
| 848 | quiet_cmd_gen_common_bufsiz = GEN include/common_bufsiz.h
|
|---|
| 849 | cmd_gen_common_bufsiz = $(srctree)/scripts/generate_BUFSIZ.sh include/common_bufsiz.h
|
|---|
| 850 | quiet_cmd_split_autoconf = SPLIT include/autoconf.h -> include/config/*
|
|---|
| 851 | cmd_split_autoconf = scripts/basic/split-include include/autoconf.h include/config
|
|---|
| 852 | #bbox# piggybacked generation of few .h files
|
|---|
| 853 | include/config/MARKER: scripts/basic/split-include include/autoconf.h
|
|---|
| 854 | $(call cmd,split_autoconf)
|
|---|
| 855 | $(call cmd,gen_bbconfigopts)
|
|---|
| 856 | $(call cmd,gen_common_bufsiz)
|
|---|
| 857 | @touch $@
|
|---|
| 858 |
|
|---|
| 859 | # Generate some files
|
|---|
| 860 | # ---------------------------------------------------------------------------
|
|---|
| 861 |
|
|---|
| 862 | # KERNELRELEASE can change from a few different places, meaning version.h
|
|---|
| 863 | # needs to be updated, so this check is forced on all builds
|
|---|
| 864 |
|
|---|
| 865 | uts_len := 64
|
|---|
| 866 |
|
|---|
| 867 | define filechk_version.h
|
|---|
| 868 | if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \
|
|---|
| 869 | echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \
|
|---|
| 870 | exit 1; \
|
|---|
| 871 | fi; \
|
|---|
| 872 | (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\"; \
|
|---|
| 873 | echo \#define LINUX_VERSION_CODE `expr $(VERSION) \\* 65536 + $(PATCHLEVEL) \\* 256 + $(SUBLEVEL)`; \
|
|---|
| 874 | echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))'; \
|
|---|
| 875 | )
|
|---|
| 876 | endef
|
|---|
| 877 |
|
|---|
| 878 | # ---------------------------------------------------------------------------
|
|---|
| 879 |
|
|---|
| 880 | PHONY += depend dep
|
|---|
| 881 | depend dep:
|
|---|
| 882 | @echo '*** Warning: make $@ is unnecessary now.'
|
|---|
| 883 |
|
|---|
| 884 | # ---------------------------------------------------------------------------
|
|---|
| 885 | # Modules
|
|---|
| 886 |
|
|---|
| 887 | ifdef _BB_DISABLED_CONFIG_MODULES
|
|---|
| 888 |
|
|---|
| 889 | # By default, build modules as well
|
|---|
| 890 |
|
|---|
| 891 | all: modules
|
|---|
| 892 |
|
|---|
| 893 | # Build modules
|
|---|
| 894 |
|
|---|
| 895 | PHONY += modules
|
|---|
| 896 | modules: $(busybox-dirs) $(if $(KBUILD_BUILTIN),busybox)
|
|---|
| 897 | @echo ' Building modules, stage 2.';
|
|---|
| 898 | $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost
|
|---|
| 899 |
|
|---|
| 900 |
|
|---|
| 901 | # Target to prepare building external modules
|
|---|
| 902 | PHONY += modules_prepare
|
|---|
| 903 | modules_prepare: prepare scripts
|
|---|
| 904 |
|
|---|
| 905 | # Target to install modules
|
|---|
| 906 | PHONY += modules_install
|
|---|
| 907 | modules_install: _modinst_ _modinst_post
|
|---|
| 908 |
|
|---|
| 909 | PHONY += _modinst_
|
|---|
| 910 | _modinst_:
|
|---|
| 911 | @if [ -z "`$(DEPMOD) -V 2>/dev/null | grep module-init-tools`" ]; then \
|
|---|
| 912 | echo "Warning: you may need to install module-init-tools"; \
|
|---|
| 913 | echo "See http://www.codemonkey.org.uk/docs/post-halloween-2.6.txt";\
|
|---|
| 914 | sleep 1; \
|
|---|
| 915 | fi
|
|---|
| 916 | @rm -rf $(MODLIB)/kernel
|
|---|
| 917 | @rm -f $(MODLIB)/source
|
|---|
| 918 | @mkdir -p $(MODLIB)/kernel
|
|---|
| 919 | @ln -s $(srctree) $(MODLIB)/source
|
|---|
| 920 | @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \
|
|---|
| 921 | rm -f $(MODLIB)/build ; \
|
|---|
| 922 | ln -s $(objtree) $(MODLIB)/build ; \
|
|---|
| 923 | fi
|
|---|
| 924 | $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modinst
|
|---|
| 925 |
|
|---|
| 926 | # If System.map exists, run depmod. This deliberately does not have a
|
|---|
| 927 | # dependency on System.map since that would run the dependency tree on
|
|---|
| 928 | # busybox. This depmod is only for convenience to give the initial
|
|---|
| 929 | # boot a modules.dep even before / is mounted read-write. However the
|
|---|
| 930 | # boot script depmod is the master version.
|
|---|
| 931 | ifeq "$(strip $(INSTALL_MOD_PATH))" ""
|
|---|
| 932 | depmod_opts :=
|
|---|
| 933 | else
|
|---|
| 934 | depmod_opts := -b $(INSTALL_MOD_PATH) -r
|
|---|
| 935 | endif
|
|---|
| 936 | PHONY += _modinst_post
|
|---|
| 937 | _modinst_post: _modinst_
|
|---|
| 938 | if [ -r System.map -a -x $(DEPMOD) ]; then $(DEPMOD) -ae -F System.map $(depmod_opts) $(KERNELRELEASE); fi
|
|---|
| 939 |
|
|---|
| 940 | else # CONFIG_MODULES
|
|---|
| 941 |
|
|---|
| 942 | # Modules not configured
|
|---|
| 943 | # ---------------------------------------------------------------------------
|
|---|
| 944 |
|
|---|
| 945 | modules modules_install: FORCE
|
|---|
| 946 | @echo
|
|---|
| 947 | @echo "The present busybox configuration has modules disabled."
|
|---|
| 948 | @echo "Type 'make config' and enable loadable module support."
|
|---|
| 949 | @echo "Then build a kernel with module support enabled."
|
|---|
| 950 | @echo
|
|---|
| 951 | @exit 1
|
|---|
| 952 |
|
|---|
| 953 | endif # CONFIG_MODULES
|
|---|
| 954 |
|
|---|
| 955 | ###
|
|---|
| 956 | # Cleaning is done on three levels.
|
|---|
| 957 | # make clean Delete most generated files
|
|---|
| 958 | # Leave enough to build external modules
|
|---|
| 959 | # make mrproper Delete the current configuration, and all generated files
|
|---|
| 960 | # make distclean Remove editor backup files, patch leftover files and the like
|
|---|
| 961 |
|
|---|
| 962 | # Directories & files removed with 'make clean'
|
|---|
| 963 | CLEAN_DIRS += $(MODVERDIR) _install 0_lib
|
|---|
| 964 | CLEAN_FILES += busybox busybox_unstripped* busybox.links \
|
|---|
| 965 | System.map .kernelrelease \
|
|---|
| 966 | .tmp_kallsyms* .tmp_version .tmp_busybox* .tmp_System.map
|
|---|
| 967 |
|
|---|
| 968 | # Directories & files removed with 'make mrproper'
|
|---|
| 969 | MRPROPER_DIRS += include/config include2
|
|---|
| 970 | MRPROPER_FILES += .config .config.old include/asm .version .old_version \
|
|---|
| 971 | include/NUM_APPLETS.h \
|
|---|
| 972 | include/common_bufsiz.h \
|
|---|
| 973 | include/autoconf.h \
|
|---|
| 974 | include/bbconfigopts.h \
|
|---|
| 975 | include/bbconfigopts_bz2.h \
|
|---|
| 976 | include/usage_compressed.h \
|
|---|
| 977 | include/applet_tables.h \
|
|---|
| 978 | include/applets.h \
|
|---|
| 979 | include/usage.h \
|
|---|
| 980 | applets/usage \
|
|---|
| 981 | .kernelrelease Module.symvers tags TAGS cscope* \
|
|---|
| 982 | busybox_old
|
|---|
| 983 |
|
|---|
| 984 | # clean - Delete most, but leave enough to build external modules
|
|---|
| 985 | #
|
|---|
| 986 | clean: rm-dirs := $(CLEAN_DIRS)
|
|---|
| 987 | clean: rm-files := $(CLEAN_FILES)
|
|---|
| 988 | clean-dirs := $(addprefix _clean_,$(srctree) $(busybox-alldirs))
|
|---|
| 989 |
|
|---|
| 990 | PHONY += $(clean-dirs) clean archclean
|
|---|
| 991 | $(clean-dirs):
|
|---|
| 992 | $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
|
|---|
| 993 |
|
|---|
| 994 | clean: archclean $(clean-dirs)
|
|---|
| 995 | $(call cmd,rmdirs)
|
|---|
| 996 | $(call cmd,rmfiles)
|
|---|
| 997 | @find . $(RCS_FIND_IGNORE) \
|
|---|
| 998 | \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
|
|---|
| 999 | -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \) \
|
|---|
| 1000 | -type f -print | xargs rm -f
|
|---|
| 1001 |
|
|---|
| 1002 | PHONY += doc-clean
|
|---|
| 1003 | doc-clean: rm-files := docs/busybox.pod \
|
|---|
| 1004 | docs/BusyBox.html docs/busybox.1 docs/BusyBox.txt
|
|---|
| 1005 | doc-clean:
|
|---|
| 1006 | $(call cmd,rmfiles)
|
|---|
| 1007 |
|
|---|
| 1008 | # mrproper - Delete all generated files, including .config
|
|---|
| 1009 | #
|
|---|
| 1010 | mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS))
|
|---|
| 1011 | mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
|
|---|
| 1012 | mrproper-dirs := $(addprefix _mrproper_,scripts)
|
|---|
| 1013 |
|
|---|
| 1014 | PHONY += $(mrproper-dirs) mrproper archmrproper
|
|---|
| 1015 | $(mrproper-dirs):
|
|---|
| 1016 | $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
|
|---|
| 1017 |
|
|---|
| 1018 | mrproper: clean archmrproper $(mrproper-dirs)
|
|---|
| 1019 | $(call cmd,rmdirs)
|
|---|
| 1020 | $(call cmd,rmfiles)
|
|---|
| 1021 | @find . -name Config.src | sed 's/.src$$/.in/' | xargs -r rm -f
|
|---|
| 1022 | @find . -name Kbuild.src | sed 's/.src$$//' | xargs -r rm -f
|
|---|
| 1023 |
|
|---|
| 1024 | # distclean
|
|---|
| 1025 | #
|
|---|
| 1026 | PHONY += distclean
|
|---|
| 1027 |
|
|---|
| 1028 | distclean: mrproper
|
|---|
| 1029 | @find $(srctree) $(RCS_FIND_IGNORE) \
|
|---|
| 1030 | \( -name '*.orig' -o -name '*.rej' -o -name '*~' \
|
|---|
| 1031 | -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
|
|---|
| 1032 | -o -name '.*.rej' -o -name '*.tmp' -o -size 0 \
|
|---|
| 1033 | -o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \
|
|---|
| 1034 | -type f -print | xargs rm -f
|
|---|
| 1035 |
|
|---|
| 1036 |
|
|---|
| 1037 | # Packaging of the kernel to various formats
|
|---|
| 1038 | # ---------------------------------------------------------------------------
|
|---|
| 1039 | # rpm target kept for backward compatibility
|
|---|
| 1040 | package-dir := $(srctree)/scripts/package
|
|---|
| 1041 |
|
|---|
| 1042 | %pkg: FORCE
|
|---|
| 1043 | $(Q)$(MAKE) $(build)=$(package-dir) $@
|
|---|
| 1044 | rpm: FORCE
|
|---|
| 1045 | $(Q)$(MAKE) $(build)=$(package-dir) $@
|
|---|
| 1046 |
|
|---|
| 1047 |
|
|---|
| 1048 | # Brief documentation of the typical targets used
|
|---|
| 1049 | # ---------------------------------------------------------------------------
|
|---|
| 1050 |
|
|---|
| 1051 | boards := $(wildcard $(srctree)/configs/*_defconfig)
|
|---|
| 1052 | boards := $(notdir $(boards))
|
|---|
| 1053 |
|
|---|
| 1054 | -include $(srctree)/Makefile.help
|
|---|
| 1055 |
|
|---|
| 1056 | # Documentation targets
|
|---|
| 1057 | # ---------------------------------------------------------------------------
|
|---|
| 1058 | %docs: scripts_basic FORCE
|
|---|
| 1059 | $(Q)$(MAKE) $(build)=Documentation/DocBook $@
|
|---|
| 1060 |
|
|---|
| 1061 | else # KBUILD_EXTMOD
|
|---|
| 1062 |
|
|---|
| 1063 | ###
|
|---|
| 1064 | # External module support.
|
|---|
| 1065 | # When building external modules the kernel used as basis is considered
|
|---|
| 1066 | # read-only, and no consistency checks are made and the make
|
|---|
| 1067 | # system is not used on the basis kernel. If updates are required
|
|---|
| 1068 | # in the basis kernel ordinary make commands (without M=...) must
|
|---|
| 1069 | # be used.
|
|---|
| 1070 | #
|
|---|
| 1071 | # The following are the only valid targets when building external
|
|---|
| 1072 | # modules.
|
|---|
| 1073 | # make M=dir clean Delete all automatically generated files
|
|---|
| 1074 | # make M=dir modules Make all modules in specified dir
|
|---|
| 1075 | # make M=dir Same as 'make M=dir modules'
|
|---|
| 1076 | # make M=dir modules_install
|
|---|
| 1077 | # Install the modules build in the module directory
|
|---|
| 1078 | # Assumes install directory is already created
|
|---|
| 1079 |
|
|---|
| 1080 | # We are always building modules
|
|---|
| 1081 | KBUILD_MODULES := 1
|
|---|
| 1082 | PHONY += crmodverdir
|
|---|
| 1083 | crmodverdir:
|
|---|
| 1084 | $(Q)mkdir -p $(MODVERDIR)
|
|---|
| 1085 | $(Q)rm -f $(MODVERDIR)/*
|
|---|
| 1086 |
|
|---|
| 1087 | PHONY += $(objtree)/Module.symvers
|
|---|
| 1088 | $(objtree)/Module.symvers:
|
|---|
| 1089 | @test -e $(objtree)/Module.symvers || ( \
|
|---|
| 1090 | echo; \
|
|---|
| 1091 | echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \
|
|---|
| 1092 | echo " is missing; modules will have no dependencies and modversions."; \
|
|---|
| 1093 | echo )
|
|---|
| 1094 |
|
|---|
| 1095 | module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD))
|
|---|
| 1096 | PHONY += $(module-dirs) modules
|
|---|
| 1097 | $(module-dirs): crmodverdir $(objtree)/Module.symvers
|
|---|
| 1098 | $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@)
|
|---|
| 1099 |
|
|---|
| 1100 | modules: $(module-dirs)
|
|---|
| 1101 | @echo ' Building modules, stage 2.';
|
|---|
| 1102 | $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost
|
|---|
| 1103 |
|
|---|
| 1104 | PHONY += modules_install
|
|---|
| 1105 | modules_install: _emodinst_ _emodinst_post
|
|---|
| 1106 |
|
|---|
| 1107 | install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra)
|
|---|
| 1108 | PHONY += _emodinst_
|
|---|
| 1109 | _emodinst_:
|
|---|
| 1110 | $(Q)mkdir -p $(MODLIB)/$(install-dir)
|
|---|
| 1111 | $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modinst
|
|---|
| 1112 |
|
|---|
| 1113 | # Run depmod only is we have System.map and depmod is executable
|
|---|
| 1114 | quiet_cmd_depmod = DEPMOD $(KERNELRELEASE)
|
|---|
| 1115 | cmd_depmod = if [ -r System.map -a -x $(DEPMOD) ]; then \
|
|---|
| 1116 | $(DEPMOD) -ae -F System.map \
|
|---|
| 1117 | $(if $(strip $(INSTALL_MOD_PATH)), \
|
|---|
| 1118 | -b $(INSTALL_MOD_PATH) -r) \
|
|---|
| 1119 | $(KERNELRELEASE); \
|
|---|
| 1120 | fi
|
|---|
| 1121 |
|
|---|
| 1122 | PHONY += _emodinst_post
|
|---|
| 1123 | _emodinst_post: _emodinst_
|
|---|
| 1124 | $(call cmd,depmod)
|
|---|
| 1125 |
|
|---|
| 1126 | clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD))
|
|---|
| 1127 |
|
|---|
| 1128 | PHONY += $(clean-dirs) clean
|
|---|
| 1129 | $(clean-dirs):
|
|---|
| 1130 | $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
|
|---|
| 1131 |
|
|---|
| 1132 | clean: rm-dirs := $(MODVERDIR)
|
|---|
| 1133 | clean: $(clean-dirs)
|
|---|
| 1134 | $(call cmd,rmdirs)
|
|---|
| 1135 | @find $(KBUILD_EXTMOD) $(RCS_FIND_IGNORE) \
|
|---|
| 1136 | \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
|
|---|
| 1137 | -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \) \
|
|---|
| 1138 | -type f -print | xargs rm -f
|
|---|
| 1139 |
|
|---|
| 1140 | # Dummies...
|
|---|
| 1141 | PHONY += prepare scripts
|
|---|
| 1142 | prepare: ;
|
|---|
| 1143 | scripts: ;
|
|---|
| 1144 | endif # KBUILD_EXTMOD
|
|---|
| 1145 |
|
|---|
| 1146 | # Generate tags for editors
|
|---|
| 1147 | # ---------------------------------------------------------------------------
|
|---|
| 1148 |
|
|---|
| 1149 | #We want __srctree to totally vanish out when KBUILD_OUTPUT is not set
|
|---|
| 1150 | #(which is the most common case IMHO) to avoid unneeded clutter in the big tags file.
|
|---|
| 1151 | #Adding $(srctree) adds about 20M on i386 to the size of the output file!
|
|---|
| 1152 |
|
|---|
| 1153 | ifeq ($(src),$(obj))
|
|---|
| 1154 | __srctree =
|
|---|
| 1155 | else
|
|---|
| 1156 | __srctree = $(srctree)/
|
|---|
| 1157 | endif
|
|---|
| 1158 |
|
|---|
| 1159 | ifeq ($(ALLSOURCE_ARCHS),)
|
|---|
| 1160 | ifeq ($(ARCH),um)
|
|---|
| 1161 | ALLINCLUDE_ARCHS := $(ARCH) $(SUBARCH)
|
|---|
| 1162 | else
|
|---|
| 1163 | ALLINCLUDE_ARCHS := $(ARCH)
|
|---|
| 1164 | endif
|
|---|
| 1165 | else
|
|---|
| 1166 | #Allow user to specify only ALLSOURCE_PATHS on the command line, keeping existing behaviour.
|
|---|
| 1167 | ALLINCLUDE_ARCHS := $(ALLSOURCE_ARCHS)
|
|---|
| 1168 | endif
|
|---|
| 1169 |
|
|---|
| 1170 | ALLSOURCE_ARCHS := $(ARCH)
|
|---|
| 1171 |
|
|---|
| 1172 | define all-sources
|
|---|
| 1173 | ( find -regex '.*\.[ch]$$' )
|
|---|
| 1174 | endef
|
|---|
| 1175 |
|
|---|
| 1176 | quiet_cmd_cscope-file = FILELST cscope.files
|
|---|
| 1177 | cmd_cscope-file = (echo \-k; echo \-q; $(all-sources)) > cscope.files
|
|---|
| 1178 |
|
|---|
| 1179 | quiet_cmd_cscope = MAKE cscope.out
|
|---|
| 1180 | cmd_cscope = cscope -b
|
|---|
| 1181 |
|
|---|
| 1182 | cscope: FORCE
|
|---|
| 1183 | $(call cmd,cscope-file)
|
|---|
| 1184 | $(call cmd,cscope)
|
|---|
| 1185 |
|
|---|
| 1186 | quiet_cmd_TAGS = MAKE $@
|
|---|
| 1187 | define cmd_TAGS
|
|---|
| 1188 | rm -f $@; \
|
|---|
| 1189 | ETAGSF=`etags --version | grep -i exuberant >/dev/null && \
|
|---|
| 1190 | echo "-I __initdata,__exitdata,__acquires,__releases \
|
|---|
| 1191 | -I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL \
|
|---|
| 1192 | --extra=+f --c-kinds=+px"`; \
|
|---|
| 1193 | $(all-sources) | xargs etags $$ETAGSF -a
|
|---|
| 1194 | endef
|
|---|
| 1195 |
|
|---|
| 1196 | TAGS: FORCE
|
|---|
| 1197 | $(call cmd,TAGS)
|
|---|
| 1198 |
|
|---|
| 1199 |
|
|---|
| 1200 | quiet_cmd_tags = MAKE $@
|
|---|
| 1201 | define cmd_tags
|
|---|
| 1202 | rm -f $@; \
|
|---|
| 1203 | CTAGSF=`ctags --version | grep -i exuberant >/dev/null && \
|
|---|
| 1204 | echo "-I __initdata,__exitdata,__acquires,__releases \
|
|---|
| 1205 | -I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL \
|
|---|
| 1206 | --extra=+f --c-kinds=+px"`; \
|
|---|
| 1207 | $(all-sources) | xargs ctags $$CTAGSF -a
|
|---|
| 1208 | endef
|
|---|
| 1209 |
|
|---|
| 1210 | tags: FORCE
|
|---|
| 1211 | $(call cmd,tags)
|
|---|
| 1212 |
|
|---|
| 1213 |
|
|---|
| 1214 | # Scripts to check various things for consistency
|
|---|
| 1215 | # ---------------------------------------------------------------------------
|
|---|
| 1216 |
|
|---|
| 1217 | includecheck:
|
|---|
| 1218 | find * $(RCS_FIND_IGNORE) \
|
|---|
| 1219 | -name '*.[hcS]' -type f -print | sort \
|
|---|
| 1220 | | xargs $(PERL) -w scripts/checkincludes.pl
|
|---|
| 1221 |
|
|---|
| 1222 | versioncheck:
|
|---|
| 1223 | find * $(RCS_FIND_IGNORE) \
|
|---|
| 1224 | -name '*.[hcS]' -type f -print | sort \
|
|---|
| 1225 | | xargs $(PERL) -w scripts/checkversion.pl
|
|---|
| 1226 |
|
|---|
| 1227 | namespacecheck:
|
|---|
| 1228 | $(PERL) $(srctree)/scripts/namespace.pl
|
|---|
| 1229 |
|
|---|
| 1230 | endif #ifeq ($(config-targets),1)
|
|---|
| 1231 | endif #ifeq ($(mixed-targets),1)
|
|---|
| 1232 |
|
|---|
| 1233 | PHONY += checkstack
|
|---|
| 1234 | checkstack:
|
|---|
| 1235 | $(OBJDUMP) -d busybox $$(find . -name '*.ko') | \
|
|---|
| 1236 | $(PERL) $(src)/scripts/checkstack.pl $(ARCH)
|
|---|
| 1237 |
|
|---|
| 1238 | kernelrelease:
|
|---|
| 1239 | $(if $(wildcard .kernelrelease), $(Q)echo $(KERNELRELEASE), \
|
|---|
| 1240 | $(error kernelrelease not valid - run 'make *config' to update it))
|
|---|
| 1241 | kernelversion:
|
|---|
| 1242 | @echo $(KERNELVERSION)
|
|---|
| 1243 |
|
|---|
| 1244 | # Single targets
|
|---|
| 1245 | # ---------------------------------------------------------------------------
|
|---|
| 1246 | # Single targets are compatible with:
|
|---|
| 1247 | # - build whith mixed source and output
|
|---|
| 1248 | # - build with separate output dir 'make O=...'
|
|---|
| 1249 | # - external modules
|
|---|
| 1250 | #
|
|---|
| 1251 | # target-dir => where to store outputfile
|
|---|
| 1252 | # build-dir => directory in kernel source tree to use
|
|---|
| 1253 |
|
|---|
| 1254 | ifeq ($(KBUILD_EXTMOD),)
|
|---|
| 1255 | build-dir = $(patsubst %/,%,$(dir $@))
|
|---|
| 1256 | target-dir = $(dir $@)
|
|---|
| 1257 | else
|
|---|
| 1258 | zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@)))
|
|---|
| 1259 | build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash))
|
|---|
| 1260 | target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@))
|
|---|
| 1261 | endif
|
|---|
| 1262 |
|
|---|
| 1263 | %.s: %.c prepare scripts FORCE
|
|---|
| 1264 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
|
|---|
| 1265 | %.i: %.c prepare scripts FORCE
|
|---|
| 1266 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
|
|---|
| 1267 | %.o: %.c prepare scripts FORCE
|
|---|
| 1268 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
|
|---|
| 1269 | %.lst: %.c prepare scripts FORCE
|
|---|
| 1270 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
|
|---|
| 1271 | %.s: %.S prepare scripts FORCE
|
|---|
| 1272 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
|
|---|
| 1273 | %.o: %.S prepare scripts FORCE
|
|---|
| 1274 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
|
|---|
| 1275 |
|
|---|
| 1276 | # Modules
|
|---|
| 1277 | %/: prepare scripts FORCE
|
|---|
| 1278 | $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
|
|---|
| 1279 | $(build)=$(build-dir)
|
|---|
| 1280 | /: prepare scripts FORCE
|
|---|
| 1281 | $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
|
|---|
| 1282 | $(build)=$(build-dir)
|
|---|
| 1283 |
|
|---|
| 1284 | %.ko: prepare scripts FORCE
|
|---|
| 1285 | $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
|
|---|
| 1286 | $(build)=$(build-dir) $(@:.ko=.o)
|
|---|
| 1287 | $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost
|
|---|
| 1288 |
|
|---|
| 1289 | # FIXME Should go into a make.lib or something
|
|---|
| 1290 | # ===========================================================================
|
|---|
| 1291 |
|
|---|
| 1292 | quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs)))
|
|---|
| 1293 | cmd_rmdirs = rm -rf $(rm-dirs)
|
|---|
| 1294 |
|
|---|
| 1295 | quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files)))
|
|---|
| 1296 | cmd_rmfiles = rm -f $(rm-files)
|
|---|
| 1297 |
|
|---|
| 1298 |
|
|---|
| 1299 | a_flags = -Wp,-MD,$(depfile) $(AFLAGS) $(AFLAGS_KERNEL) \
|
|---|
| 1300 | $(NOSTDINC_FLAGS) $(CPPFLAGS) \
|
|---|
| 1301 | $(modkern_aflags) $(EXTRA_AFLAGS) $(AFLAGS_$(*F).o)
|
|---|
| 1302 |
|
|---|
| 1303 | quiet_cmd_as_o_S = AS $@
|
|---|
| 1304 | cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $<
|
|---|
| 1305 |
|
|---|
| 1306 | # read all saved command lines
|
|---|
| 1307 |
|
|---|
| 1308 | targets := $(wildcard $(sort $(targets)))
|
|---|
| 1309 | cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
|
|---|
| 1310 |
|
|---|
| 1311 | ifneq ($(cmd_files),)
|
|---|
| 1312 | $(cmd_files): ; # Do not try to update included dependency files
|
|---|
| 1313 | include $(cmd_files)
|
|---|
| 1314 | endif
|
|---|
| 1315 |
|
|---|
| 1316 | # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir
|
|---|
| 1317 | # Usage:
|
|---|
| 1318 | # $(Q)$(MAKE) $(clean)=dir
|
|---|
| 1319 | clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj
|
|---|
| 1320 |
|
|---|
| 1321 | endif # skip-makefile
|
|---|
| 1322 |
|
|---|
| 1323 | PHONY += FORCE
|
|---|
| 1324 | FORCE:
|
|---|
| 1325 |
|
|---|
| 1326 | -include $(srctree)/Makefile.custom
|
|---|
| 1327 |
|
|---|
| 1328 | # Declare the contents of the .PHONY variable as phony. We keep that
|
|---|
| 1329 | # information in a variable se we can use it in if_changed and friends.
|
|---|
| 1330 | .PHONY: $(PHONY)
|
|---|
