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 || rm -f .xcompile)))
  36
  37 .xcompile: util/xcompile/xcompile
  38         rm -f $@
  39         $< $(XGCCPATH) > $@.tmp
  40         \mv -f $@.tmp $@ 2> /dev/null
  41         rm -f $@.tmp
  42
  43 export top := $(CURDIR)
  44 export src := src
  45 export srck := $(top)/util/kconfig
  46 obj ?= build
  47 override obj := $(subst $(top)/,,$(abspath $(obj)))
  48 export obj
  49 export objutil ?= $(obj)/util
  50 export objk := $(objutil)/kconfig
  51 absobj := $(abspath $(obj))
  52
  53
  54 export KCONFIG_AUTOHEADER := $(obj)/config.h
  55 export KCONFIG_AUTOCONFIG := $(obj)/auto.conf
  56 export KCONFIG_DEPENDENCIES := $(obj)/auto.conf.cmd
  57 export KCONFIG_SPLITCONFIG := $(obj)/config
  58 export KCONFIG_TRISTATE := $(obj)/tristate.conf
  59 export KCONFIG_NEGATIVES := 1
  60
  61 # directory containing the toplevel Makefile.inc
  62 TOPLEVEL := .
  63
  64 CONFIG_SHELL := sh
  65 KBUILD_DEFCONFIG := configs/defconfig
  66 UNAME_RELEASE := $(shell uname -r)
  67 DOTCONFIG ?= .config
  68 KCONFIG_CONFIG = $(DOTCONFIG)
  69 export KCONFIG_CONFIG
  70 HAVE_DOTCONFIG := $(wildcard $(DOTCONFIG))
  71 MAKEFLAGS += -rR --no-print-directory
  72
  73 # Make is silent per default, but 'make V=1' will show all compiler calls.
  74 Q:=@
  75 ifneq ($(V),1)
  76 ifneq ($(Q),)
  77 .SILENT:
  78 endif
  79 endif
  80
  81 # Disable implicit/built-in rules to make Makefile errors fail fast.
  82 .SUFFIXES:
  83
  84 HOSTCC := $(if $(shell type gcc 2>/dev/null), gcc, cc)
  85 HOSTCXX = g++
  86 HOSTCFLAGS := -g
  87 HOSTCXXFLAGS := -g
  88
  89 PREPROCESS_ONLY := -E -P -x assembler-with-cpp -undef -I .
  90
  91 DOXYGEN := doxygen
  92 DOXYGEN_OUTPUT_DIR := doxygen
  93
  94 all: real-all
  95
  96 help_coreboot help::
  97         @echo  '*** coreboot platform targets ***'
  98         @echo  '  Use "make [target] V=1" for extra build debug information'
  99         @echo  '  all                   - Build coreboot'
 100         @echo  '  clean                 - Remove coreboot build artifacts'
 101         @echo  '  distclean             - Remove build artifacts and config files'
 102         @echo  '  doxygen               - Build doxygen documentation for coreboot'
 103         @echo  '  what-jenkins-does     - Run platform build tests (Use CPUS=# for more cores)'
 104         @echo  '  printall              - print makefile info for debugging'
 105         @echo  '  lint / lint-stable    - run coreboot lint tools (all / minimal)'
 106         @echo  '  gitconfig             - set up git to subnit patches to coreboot'
 107         @echo  '  ctags / ctags-project - make ctags file for all of coreboot or current board'
 108         @echo  '  cscope / cscope-project - make cscope.out file for coreboot or current board'
 109         @echo
 110
 111 # This include must come _before_ the pattern rules below!
 112 # Order _does_ matter for pattern rules.
 113 include $(srck)/Makefile
 114
 115 # Three cases where we don't need fully populated $(obj) lists:
 116 # 1. when no .config exists
 117 # 2. when make config (in any flavour) is run
 118 # 3. when make distclean is run
 119 # Don't waste time on reading all Makefile.incs in these cases
 120 ifeq ($(strip $(HAVE_DOTCONFIG)),)
 121 NOCOMPILE:=1
 122 endif
 123 ifneq ($(MAKECMDGOALS),)
 124 ifneq ($(filter %config %clean cross% clang iasl lint% help% what-jenkins-does,$(MAKECMDGOALS)),)
 125 NOCOMPILE:=1
 126 endif
 127 ifeq ($(MAKECMDGOALS), %clean)
 128 NOMKDIR:=1
 129 endif
 130 endif
 131
 132 ifeq ($(NOCOMPILE),1)
 133 include $(TOPLEVEL)/Makefile.inc
 134 real-all: config
 135
 136 else
 137
 138 include $(HAVE_DOTCONFIG)
 139
 140 -include .xcompile
 141
 142 ifneq ($(XCOMPILE_COMPLETE),1)
 143 $(shell rm -f .xcompile)
 144 $(error .xcompile deleted because it's invalid. \
 145         Restarting the build should fix that, or explain the problem)
 146 endif
 147
 148 ifneq ($(CONFIG_MMX),y)
 149 CFLAGS_x86_32 += -mno-mmx
 150 endif
 151
 152 include toolchain.inc
 153
 154 strip_quotes = $(strip $(subst ",,$(subst \",,$(1))))
 155
 156 # The primary target needs to be here before we include the
 157 # other files
 158
 159 real-all: real-target
 160
 161 # must come rather early
 162 .SECONDEXPANSION:
 163
 164 $(KCONFIG_AUTOHEADER): $(KCONFIG_CONFIG)
 165         $(MAKE) oldconfig
 166
 167 # Add a new class of source/object files to the build system
 168 add-class= \
 169         $(eval $(1)-srcs:=) \
 170         $(eval $(1)-objs:=) \
 171         $(eval classes+=$(1))
 172
 173 # Special classes are managed types with special behaviour
 174 # On parse time, for each entry in variable $(1)-y
 175 # a handler $(1)-handler is executed with the arguments:
 176 # * $(1): directory the parser is in
 177 # * $(2): current entry
 178 add-special-class= \
 179         $(eval $(1):=) \
 180         $(eval special-classes+=$(1))
 181
 182 # Clean -y variables, include Makefile.inc
 183 # Add paths to files in X-y to X-srcs
 184 # Add subdirs-y to subdirs
 185 includemakefiles= \
 186         $(foreach class,classes subdirs $(classes) $(special-classes), $(eval $(class)-y:=)) \
 187         $(eval -include $(1)) \
 188         $(foreach class,$(classes-y), $(call add-class,$(class))) \
 189         $(foreach class,$(classes), \
 190                 $(eval $(class)-srcs+= \
 191                         $$(subst $(absobj)/,$(obj)/, \
 192                         $$(subst $(top)/,, \
 193                         $$(abspath $$(subst $(dir $(1))/,/,$$(addprefix $(dir $(1)),$$($(class)-y)))))))) \
 194         $(foreach special,$(special-classes), \
 195                 $(foreach item,$($(special)-y), $(call $(special)-handler,$(dir $(1)),$(item)))) \
 196         $(eval subdirs+=$$(subst $(CURDIR)/,,$$(abspath $$(addprefix $(dir $(1)),$$(subdirs-y)))))
 197
 198 # For each path in $(subdirs) call includemakefiles
 199 # Repeat until subdirs is empty
 200 evaluate_subdirs= \
 201         $(eval cursubdirs:=$(subdirs)) \
 202         $(eval subdirs:=) \
 203         $(foreach dir,$(cursubdirs), \
 204                 $(eval $(call includemakefiles,$(dir)/Makefile.inc))) \
 205         $(if $(subdirs),$(eval $(call evaluate_subdirs)))
 206
 207 # collect all object files eligible for building
 208 subdirs:=$(TOPLEVEL)
 209 $(eval $(call evaluate_subdirs))
 210 ifeq ($(FAILBUILD),1)
 211 $(error cannot continue build)
 212 endif
 213
 214 # Eliminate duplicate mentions of source files in a class
 215 $(foreach class,$(classes),$(eval $(class)-srcs:=$(sort $($(class)-srcs))))
 216
 217 # Converts one or more source file paths to their corresponding build/ paths.
 218 # Only .c and .S get converted to .o, other files (like .ld) keep their name.
 219 # $1 stage name
 220 # $2 file path (list)
 221 src-to-obj=$(foreach file,$(2),$(subst .$(1),,$(basename $(patsubst src/%,$(obj)/%,$(file)))).$(1)$(patsubst %.c,%.o,$(patsubst %.S,%.o,$(suffix $(file)))))
 222
 223 $(foreach class,$(classes),$(eval $(class)-objs:=$(call src-to-obj,$(class),$($(class)-srcs))))
 224
 225 # Save all objs before processing them (for dependency inclusion)
 226 originalobjs:=$(foreach var, $(addsuffix -objs,$(classes)), $($(var)))
 227
 228 # Call post-processors if they're defined
 229 $(foreach class,$(classes),\
 230         $(if $(value $(class)-postprocess),$(eval $(call $(class)-postprocess,$($(class)-objs)))))
 231
 232 allsrcs:=$(foreach var, $(addsuffix -srcs,$(classes)), $($(var)))
 233 allobjs:=$(foreach var, $(addsuffix -objs,$(classes)), $($(var)))
 234 alldirs:=$(sort $(abspath $(dir $(allobjs))))
 235
 236 # macro to define template macros that are used by use_template macro
 237 define create_cc_template
 238 # $1 obj class
 239 # $2 source suffix (c, S, ld, ...)
 240 # $3 additional compiler flags
 241 # $4 additional dependencies
 242 ifn$(EMPTY)def $(1)-objs_$(2)_template
 243 de$(EMPTY)fine $(1)-objs_$(2)_template
 244 $$(call src-to-obj,$1,$$(1).$2): $$(1).$2 $(KCONFIG_AUTOHEADER) $(4)
 245         @printf "    CC         $$$$(subst $$$$(obj)/,,$$$$(@))\n"
 246         $(CC_$(1)) -MMD $$$$(CPPFLAGS_$(1)) $$$$(CFLAGS_$(1)) -MT $$$$(@) $(3) -c -o $$$$@ $$$$<
 247 en$(EMPTY)def
 248 end$(EMPTY)if
 249 endef
 250
 251 filetypes-of-class=$(subst .,,$(sort $(suffix $($(1)-srcs))))
 252 $(foreach class,$(classes), \
 253         $(foreach type,$(call filetypes-of-class,$(class)), \
 254                 $(eval $(class)-$(type)-ccopts += $(generic-$(type)-ccopts) $($(class)-generic-ccopts)) \
 255                 $(if $(generic-objs_$(type)_template_gen),$(eval $(call generic-objs_$(type)_template_gen,$(class))),\
 256                 $(eval $(call create_cc_template,$(class),$(type),$($(class)-$(type)-ccopts),$($(class)-$(type)-deps))))))
 257
 258 foreach-src=$(foreach file,$($(1)-srcs),$(eval $(call $(1)-objs_$(subst .,,$(suffix $(file)))_template,$(basename $(file)))))
 259 $(eval $(foreach class,$(classes),$(call foreach-src,$(class))))
 260
 261 DEPENDENCIES += $(addsuffix .d,$(basename $(allobjs)))
 262 -include $(DEPENDENCIES)
 263
 264 printall:
 265         @$(foreach class,$(classes),echo $(class)-objs:=$($(class)-objs); )
 266         @echo alldirs:=$(alldirs)
 267         @echo allsrcs=$(allsrcs)
 268         @echo DEPENDENCIES=$(DEPENDENCIES)
 269         @$(foreach class,$(special-classes),echo $(class):='$($(class))'; )
 270
 271 endif
 272
 273 ifndef NOMKDIR
 274 $(shell mkdir -p $(KCONFIG_SPLITCONFIG) $(objk)/lxdialog $(additional-dirs) $(alldirs))
 275 endif
 276
 277 $(obj)/project_filelist.txt: all
 278         find $(obj) -name "*.d" -exec cat {} \; | \
 279           sed 's/[:\\]/ /g' | sed 's/ /\n/g' | sort | uniq | \
 280           grep -v '\.o$$' > $(obj)/project_filelist.txt
 281
 282 #works with either exuberant ctags or ctags.emacs
 283 ctags-project: clean-ctags $(obj)/project_filelist.txt
 284         cat $(obj)/project_filelist.txt | \
 285           xargs ctags -o tags
 286
 287 cscope-project: clean-cscope $(obj)/project_filelist.txt
 288         cat $(obj)/project_filelist.txt | xargs cscope -b
 289
 290 cscope:
 291         cscope -bR
 292
 293 doxy: doxygen
 294 doxygen:
 295         $(DOXYGEN) Documentation/Doxyfile.coreboot
 296
 297 doxygen_simple:
 298         $(DOXYGEN) Documentation/Doxyfile.coreboot_simple
 299
 300 doxyclean: doxygen-clean
 301 doxygen-clean:
 302         rm -rf $(DOXYGEN_OUTPUT_DIR)
 303
 304 clean-for-update: doxygen-clean clean-for-update-target
 305         rm -rf $(obj) .xcompile
 306
 307 clean: clean-for-update clean-target
 308         rm -f .ccwrap
 309
 310 clean-cscope:
 311         rm -f cscope.out
 312
 313 clean-ctags:
 314         rm -f tags
 315
 316 distclean: clean clean-ctags clean-cscope
 317         rm -f .config .config.old ..config.tmp .kconfig.d .tmpconfig* .ccwrap .xcompile
 318
 319 .PHONY: $(PHONY) clean clean-for-update clean-cscope cscope distclean doxygen doxy doxygen_simple
 320 .PHONY: ctags-project cscope-project clean-ctags