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