Makefile

   1 ##
   2 ## This file is part of the coreboot project.
   3 ##
   4 ## Copyright (C) 2008 Advanced Micro Devices, Inc.
   5 ## Copyright (C) 2008 Uwe Hermann <uwe@hermann-uwe.de>
   6 ## Copyright (C) 2009-2010 coresystems GmbH
   7 ## Copyright (C) 2011 secunet Security Networks AG
   8 ##
   9 ## Redistribution and use in source and binary forms, with or without
  10 ## modification, are permitted provided that the following conditions
  11 ## are met:
  12 ## 1. Redistributions of source code must retain the above copyright
  13 ##    notice, this list of conditions and the following disclaimer.
  14 ## 2. Redistributions in binary form must reproduce the above copyright
  15 ##    notice, this list of conditions and the following disclaimer in the
  16 ##    documentation and/or other materials provided with the distribution.
  17 ## 3. The name of the author may not be used to endorse or promote products
  18 ##    derived from this software without specific prior written permission.
  19 ##
  20 ## THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  21 ## ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22 ## IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23 ## ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  24 ## FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25 ## DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26 ## OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27 ## HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28 ## LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29 ## OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30 ## SUCH DAMAGE.
  31 ##
  32
  33 # in addition to the dependency below, create the file if it doesn't exist
  34 # to silence stupid warnings about a file that would be generated anyway.
  35 $(if $(wildcard .xcompile),,$(eval $(shell util/xcompile/xcompile $(XGCCPATH) > .xcompile)))
  36
  37 .xcompile: util/xcompile/xcompile
  38         $< $(XGCCPATH) > $@.tmp
  39         \mv -f $@.tmp $@ 2> /dev/null
  40
  41 export top := $(CURDIR)
  42 export src := src
  43 export srck := $(top)/util/kconfig
  44 obj ?= build
  45 override obj := $(subst $(top)/,,$(abspath $(obj)))
  46 export obj
  47 export objutil ?= $(obj)/util
  48 export objk := $(objutil)/kconfig
  49 absobj := $(abspath $(obj))
  50
  51
  52 export KCONFIG_AUTOHEADER := $(obj)/config.h
  53 export KCONFIG_AUTOCONFIG := $(obj)/auto.conf
  54 export KCONFIG_DEPENDENCIES := $(obj)/auto.conf.cmd
  55 export KCONFIG_SPLITCONFIG := $(obj)/config
  56 export KCONFIG_TRISTATE := $(obj)/tristate.conf
  57 export KCONFIG_NEGATIVES := 1
  58
  59 # directory containing the toplevel Makefile.inc
  60 TOPLEVEL := .
  61
  62 CONFIG_SHELL := sh
  63 KBUILD_DEFCONFIG := configs/defconfig
  64 UNAME_RELEASE := $(shell uname -r)
  65 DOTCONFIG ?= .config
  66 KCONFIG_CONFIG = $(DOTCONFIG)
  67 export KCONFIG_CONFIG
  68 HAVE_DOTCONFIG := $(wildcard $(DOTCONFIG))
  69 MAKEFLAGS += -rR --no-print-directory
  70
  71 # Make is silent per default, but 'make V=1' will show all compiler calls.
  72 Q:=@
  73 ifneq ($(V),1)
  74 ifneq ($(Q),)
  75 .SILENT:
  76 endif
  77 endif
  78
  79 # Disable implicit/built-in rules to make Makefile errors fail fast.
  80 .SUFFIXES:
  81
  82 HOSTCC := gcc
  83 HOSTCXX = g++
  84 HOSTCFLAGS := -g
  85 HOSTCXXFLAGS := -g
  86
  87 PREPROCESS_ONLY := -E -P -x assembler-with-cpp -undef -I .
  88
  89 DOXYGEN := doxygen
  90 DOXYGEN_OUTPUT_DIR := doxygen
  91
  92 all: real-all
  93
  94 # This include must come _before_ the pattern rules below!
  95 # Order _does_ matter for pattern rules.
  96 include $(srck)/Makefile
  97
  98 # Three cases where we don't need fully populated $(obj) lists:
  99 # 1. when no .config exists
 100 # 2. when make config (in any flavour) is run
 101 # 3. when make distclean is run
 102 # Don't waste time on reading all Makefile.incs in these cases
 103 ifeq ($(strip $(HAVE_DOTCONFIG)),)
 104 NOCOMPILE:=1
 105 endif
 106 ifneq ($(MAKECMDGOALS),)
 107 ifneq ($(filter %config %clean cross% lint% what-jenkins-does,$(MAKECMDGOALS)),)
 108 NOCOMPILE:=1
 109 endif
 110 ifeq ($(MAKECMDGOALS), %clean)
 111 NOMKDIR:=1
 112 endif
 113 endif
 114
 115 ifeq ($(NOCOMPILE),1)
 116 include $(TOPLEVEL)/Makefile.inc
 117 real-all: config
 118
 119 else
 120
 121 include $(HAVE_DOTCONFIG)
 122
 123 include .xcompile
 124
 125 ifneq ($(CONFIG_MMX),y)
 126 CFLAGS_x86_32 += -mno-mmx
 127 endif
 128
 129 include toolchain.inc
 130
 131 strip_quotes = $(subst ",,$(subst \",,$(1)))
 132
 133 # The primary target needs to be here before we include the
 134 # other files
 135
 136 real-all: real-target
 137
 138 # must come rather early
 139 .SECONDEXPANSION:
 140
 141 $(KCONFIG_AUTOHEADER): $(KCONFIG_CONFIG)
 142         $(MAKE) oldconfig
 143
 144 # Add a new class of source/object files to the build system
 145 add-class= \
 146         $(eval $(1)-srcs:=) \
 147         $(eval $(1)-objs:=) \
 148         $(eval classes+=$(1))
 149
 150 # Special classes are managed types with special behaviour
 151 # On parse time, for each entry in variable $(1)-y
 152 # a handler $(1)-handler is executed with the arguments:
 153 # * $(1): directory the parser is in
 154 # * $(2): current entry
 155 add-special-class= \
 156         $(eval $(1):=) \
 157         $(eval special-classes+=$(1))
 158
 159 # Clean -y variables, include Makefile.inc
 160 # Add paths to files in X-y to X-srcs
 161 # Add subdirs-y to subdirs
 162 includemakefiles= \
 163         $(foreach class,classes subdirs $(classes) $(special-classes), $(eval $(class)-y:=)) \
 164         $(eval -include $(1)) \
 165         $(foreach class,$(classes-y), $(call add-class,$(class))) \
 166         $(foreach class,$(classes), \
 167                 $(eval $(class)-srcs+= \
 168                         $$(subst $(absobj)/,$(obj)/, \
 169                         $$(subst $(top)/,, \
 170                         $$(abspath $$(subst $(dir $(1))/,/,$$(addprefix $(dir $(1)),$$($(class)-y)))))))) \
 171         $(foreach special,$(special-classes), \
 172                 $(foreach item,$($(special)-y), $(call $(special)-handler,$(dir $(1)),$(item)))) \
 173         $(eval subdirs+=$$(subst $(CURDIR)/,,$$(abspath $$(addprefix $(dir $(1)),$$(subdirs-y)))))
 174
 175 # For each path in $(subdirs) call includemakefiles
 176 # Repeat until subdirs is empty
 177 evaluate_subdirs= \
 178         $(eval cursubdirs:=$(subdirs)) \
 179         $(eval subdirs:=) \
 180         $(foreach dir,$(cursubdirs), \
 181                 $(eval $(call includemakefiles,$(dir)/Makefile.inc))) \
 182         $(if $(subdirs),$(eval $(call evaluate_subdirs)))
 183
 184 # collect all object files eligible for building
 185 subdirs:=$(TOPLEVEL)
 186 $(eval $(call evaluate_subdirs))
 187 ifeq ($(FAILBUILD),1)
 188 $(error cannot continue build)
 189 endif
 190
 191 # Eliminate duplicate mentions of source files in a class
 192 $(foreach class,$(classes),$(eval $(class)-srcs:=$(sort $($(class)-srcs))))
 193
 194 # Converts one or more source file paths to their corresponding build/ paths.
 195 # Only .c and .S get converted to .o, other files (like .ld) keep their name.
 196 # $1 stage name
 197 # $2 file path (list)
 198 src-to-obj=$(foreach file,$(2),$(subst .$(1),,$(basename $(patsubst src/%,$(obj)/%,$(file)))).$(1)$(patsubst %.c,%.o,$(patsubst %.S,%.o,$(suffix $(file)))))
 199
 200 $(foreach class,$(classes),$(eval $(class)-objs:=$(call src-to-obj,$(class),$($(class)-srcs))))
 201
 202 # Save all objs before processing them (for dependency inclusion)
 203 originalobjs:=$(foreach var, $(addsuffix -objs,$(classes)), $($(var)))
 204
 205 # Call post-processors if they're defined
 206 $(foreach class,$(classes),\
 207         $(if $(value $(class)-postprocess),$(eval $(call $(class)-postprocess,$($(class)-objs)))))
 208
 209 allsrcs:=$(foreach var, $(addsuffix -srcs,$(classes)), $($(var)))
 210 allobjs:=$(foreach var, $(addsuffix -objs,$(classes)), $($(var)))
 211 alldirs:=$(sort $(abspath $(dir $(allobjs))))
 212
 213 # macro to define template macros that are used by use_template macro
 214 define create_cc_template
 215 # $1 obj class
 216 # $2 source suffix (c, S, ld, ...)
 217 # $3 additional compiler flags
 218 # $4 additional dependencies
 219 ifn$(EMPTY)def $(1)-objs_$(2)_template
 220 de$(EMPTY)fine $(1)-objs_$(2)_template
 221 $$(call src-to-obj,$1,$$(1).$2): $$(1).$2 $(KCONFIG_AUTOHEADER) $(4)
 222         @printf "    CC         $$$$(subst $$$$(obj)/,,$$$$(@))\n"
 223         $(CC_$(1)) -MMD $$$$(CPPFLAGS_$(1)) $$$$(CFLAGS_$(1)) -MT $$$$(@) $(3) -c -o $$$$@ $$$$<
 224 en$(EMPTY)def
 225 end$(EMPTY)if
 226 endef
 227
 228 filetypes-of-class=$(subst .,,$(sort $(suffix $($(1)-srcs))))
 229 $(foreach class,$(classes), \
 230         $(foreach type,$(call filetypes-of-class,$(class)), \
 231                 $(eval $(class)-$(type)-ccopts += $(generic-$(type)-ccopts) $($(class)-generic-ccopts)) \
 232                 $(if $(generic-objs_$(type)_template_gen),$(eval $(call generic-objs_$(type)_template_gen,$(class))),\
 233                 $(eval $(call create_cc_template,$(class),$(type),$($(class)-$(type)-ccopts),$($(class)-$(type)-deps))))))
 234
 235 foreach-src=$(foreach file,$($(1)-srcs),$(eval $(call $(1)-objs_$(subst .,,$(suffix $(file)))_template,$(basename $(file)))))
 236 $(eval $(foreach class,$(classes),$(call foreach-src,$(class))))
 237
 238 DEPENDENCIES += $(addsuffix .d,$(basename $(allobjs)))
 239 -include $(DEPENDENCIES)
 240
 241 printall:
 242         @$(foreach class,$(classes),echo $(class)-objs:=$($(class)-objs); )
 243         @echo alldirs:=$(alldirs)
 244         @echo allsrcs=$(allsrcs)
 245         @echo DEPENDENCIES=$(DEPENDENCIES)
 246         @$(foreach class,$(special-classes),echo $(class):='$($(class))'; )
 247
 248 endif
 249
 250 ifndef NOMKDIR
 251 $(shell mkdir -p $(KCONFIG_SPLITCONFIG) $(objk)/lxdialog $(additional-dirs) $(alldirs))
 252 endif
 253
 254 $(obj)/project_filelist.txt: all
 255         find $(obj) -name "*.d" -exec cat {} \; | \
 256           sed 's/[:\\]/ /g' | sed 's/ /\n/g' | sort | uniq | \
 257           grep -v '\.o$$' > $(obj)/project_filelist.txt
 258
 259 #works with either exuberant ctags or ctags.emacs
 260 ctags-project: clean-ctags $(obj)/project_filelist.txt
 261         cat $(obj)/project_filelist.txt | \
 262           xargs ctags -o tags
 263
 264 cscope-project: clean-cscope $(obj)/project_filelist.txt
 265         cat $(obj)/project_filelist.txt | xargs cscope -b
 266
 267 cscope:
 268         cscope -bR
 269
 270 doxy: doxygen
 271 doxygen:
 272         $(DOXYGEN) Documentation/Doxyfile.coreboot
 273
 274 doxygen_simple:
 275         $(DOXYGEN) Documentation/Doxyfile.coreboot_simple
 276
 277 doxyclean: doxygen-clean
 278 doxygen-clean:
 279         rm -rf $(DOXYGEN_OUTPUT_DIR)
 280
 281 clean-for-update: doxygen-clean clean-for-update-target
 282         rm -rf $(obj) .xcompile
 283
 284 clean: clean-for-update clean-target
 285         rm -f .ccwrap
 286
 287 clean-cscope:
 288         rm -f cscope.out
 289
 290 clean-ctags:
 291         rm -f tags
 292
 293 distclean: clean clean-ctags clean-cscope
 294         rm -f .config .config.old ..config.tmp .kconfig.d .tmpconfig* .ccwrap .xcompile
 295
 296 .PHONY: $(PHONY) clean clean-for-update clean-cscope cscope distclean doxygen doxy doxygen_simple
 297 .PHONY: ctags-project cscope-project clean-ctags