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 $(if $(wildcard .xcompile),,$(eval $(shell bash util/xcompile/xcompile $(XGCCPATH) > .xcompile)))
  34 include .xcompile
  35
  36 export top := $(CURDIR)
  37 export src := src
  38 export srck := $(top)/util/kconfig
  39 export obj ?= build
  40 export objutil ?= $(obj)/util
  41 export objk := $(objutil)/kconfig
  42
  43
  44 export KCONFIG_AUTOHEADER := $(obj)/config.h
  45 export KCONFIG_AUTOCONFIG := $(obj)/auto.conf
  46 export KCONFIG_DEPENDENCIES := $(obj)/auto.conf.cmd
  47 export KCONFIG_SPLITCONFIG := $(obj)/config
  48 export KCONFIG_TRISTATE := $(obj)/tristate.conf
  49 export KCONFIG_NEGATIVES := 1
  50
  51 # directory containing the toplevel Makefile.inc
  52 TOPLEVEL := .
  53
  54 CONFIG_SHELL := sh
  55 KBUILD_DEFCONFIG := configs/defconfig
  56 UNAME_RELEASE := $(shell uname -r)
  57 DOTCONFIG ?= .config
  58 KCONFIG_CONFIG = $(DOTCONFIG)
  59 export KCONFIG_CONFIG
  60 HAVE_DOTCONFIG := $(wildcard $(DOTCONFIG))
  61 MAKEFLAGS += -rR --no-print-directory
  62
  63 # Make is silent per default, but 'make V=1' will show all compiler calls.
  64 Q:=@
  65 ifneq ($(V),1)
  66 ifneq ($(Q),)
  67 .SILENT:
  68 endif
  69 endif
  70
  71 HOSTCC = gcc
  72 HOSTCXX = g++
  73 HOSTCFLAGS := -g
  74 HOSTCXXFLAGS := -g
  75
  76 DOXYGEN := doxygen
  77 DOXYGEN_OUTPUT_DIR := doxygen
  78
  79 all: real-all
  80
  81 # This include must come _before_ the pattern rules below!
  82 # Order _does_ matter for pattern rules.
  83 include util/kconfig/Makefile
  84
  85 # Three cases where we don't need fully populated $(obj) lists:
  86 # 1. when no .config exists
  87 # 2. when make config (in any flavour) is run
  88 # 3. when make distclean is run
  89 # Don't waste time on reading all Makefile.incs in these cases
  90 ifeq ($(strip $(HAVE_DOTCONFIG)),)
  91 NOCOMPILE:=1
  92 endif
  93 ifneq ($(MAKECMDGOALS),)
  94 ifneq ($(filter %config %clean cross%,$(MAKECMDGOALS)),)
  95 NOCOMPILE:=1
  96 endif
  97 ifeq ($(MAKECMDGOALS), %clean)
  98 NOMKDIR:=1
  99 endif
 100 endif
 101
 102 ifeq ($(NOCOMPILE),1)
 103 include $(TOPLEVEL)/Makefile.inc
 104 real-all: config
 105
 106 else
 107
 108 include $(HAVE_DOTCONFIG)
 109
 110 include toolchain.inc
 111
 112 ifeq ($(CONFIG_COMPILER_LLVM_CLANG),y)
 113 CC:=clang -m32 -mno-mmx -mno-sse -no-integrated-as
 114 HOSTCC:=clang
 115 endif
 116
 117 strip_quotes = $(subst ",,$(subst \",,$(1)))
 118
 119 # The primary target needs to be here before we include the
 120 # other files
 121
 122 real-all: real-target
 123
 124 # must come rather early
 125 .SECONDEXPANSION:
 126
 127 $(obj)/config.h:
 128         $(MAKE) oldconfig
 129
 130 # Add a new class of source/object files to the build system
 131 add-class= \
 132         $(eval $(1)-srcs:=) \
 133         $(eval $(1)-objs:=) \
 134         $(eval classes+=$(1))
 135
 136 # Special classes are managed types with special behaviour
 137 # On parse time, for each entry in variable $(1)-y
 138 # a handler $(1)-handler is executed with the arguments:
 139 # * $(1): directory the parser is in
 140 # * $(2): current entry
 141 add-special-class= \
 142         $(eval $(1):=) \
 143         $(eval special-classes+=$(1))
 144
 145 # Clean -y variables, include Makefile.inc
 146 # Add paths to files in X-y to X-srcs
 147 # Add subdirs-y to subdirs
 148 includemakefiles= \
 149         $(foreach class,classes subdirs $(classes) $(special-classes), $(eval $(class)-y:=)) \
 150         $(eval -include $(1)) \
 151         $(foreach class,$(classes-y), $(call add-class,$(class))) \
 152         $(foreach class,$(classes), \
 153                 $(eval $(class)-srcs+= \
 154                         $$(subst $(top)/,, \
 155                         $$(abspath $$(subst $(dir $(1))/,/,$$(addprefix $(dir $(1)),$$($(class)-y))))))) \
 156         $(foreach special,$(special-classes), \
 157                 $(foreach item,$($(special)-y), $(call $(special)-handler,$(dir $(1)),$(item)))) \
 158         $(eval subdirs+=$$(subst $(CURDIR)/,,$$(abspath $$(addprefix $(dir $(1)),$$(subdirs-y)))))
 159
 160 # For each path in $(subdirs) call includemakefiles
 161 # Repeat until subdirs is empty
 162 evaluate_subdirs= \
 163         $(eval cursubdirs:=$(subdirs)) \
 164         $(eval subdirs:=) \
 165         $(foreach dir,$(cursubdirs), \
 166                 $(eval $(call includemakefiles,$(dir)/Makefile.inc))) \
 167         $(if $(subdirs),$(eval $(call evaluate_subdirs)))
 168
 169 # collect all object files eligible for building
 170 subdirs:=$(TOPLEVEL)
 171 $(eval $(call evaluate_subdirs))
 172 ifeq ($(FAILBUILD),1)
 173 $(error cannot continue build)
 174 endif
 175
 176 # Eliminate duplicate mentions of source files in a class
 177 $(foreach class,$(classes),$(eval $(class)-srcs:=$(sort $($(class)-srcs))))
 178
 179 src-to-obj=$(addsuffix .$(1).o, $(basename $(patsubst src/%, $(obj)/%, $($(1)-srcs))))
 180 $(foreach class,$(classes),$(eval $(class)-objs:=$(call src-to-obj,$(class))))
 181
 182 # Save all objs before processing them (for dependency inclusion)
 183 originalobjs:=$(foreach var, $(addsuffix -objs,$(classes)), $($(var)))
 184
 185 # Call post-processors if they're defined
 186 $(foreach class,$(classes),\
 187         $(if $(value $(class)-postprocess),$(eval $(call $(class)-postprocess,$($(class)-objs)))))
 188
 189 allsrcs:=$(foreach var, $(addsuffix -srcs,$(classes)), $($(var)))
 190 allobjs:=$(foreach var, $(addsuffix -objs,$(classes)), $($(var)))
 191 alldirs:=$(sort $(abspath $(dir $(allobjs))))
 192
 193 # macro to define template macros that are used by use_template macro
 194 define create_cc_template
 195 # $1 obj class
 196 # $2 source suffix (c, S)
 197 # $3 additional compiler flags
 198 # $4 additional dependencies
 199 ifn$(EMPTY)def $(1)-objs_$(2)_template
 200 de$(EMPTY)fine $(1)-objs_$(2)_template
 201 $(obj)/$$(1).$(1).o: src/$$(1).$(2) $(obj)/config.h $(4)
 202         @printf "    CC         $$$$(subst $$$$(obj)/,,$$$$(@))\n"
 203         $(CC_$(1)) $(3) -MMD $$$$(CPPFLAGS_$(1)) $$$$(CFLAGS_$(1)) -c -o $$$$@ $$$$<
 204 en$(EMPTY)def
 205 end$(EMPTY)if
 206 endef
 207
 208 filetypes-of-class=$(subst .,,$(sort $(suffix $($(1)-srcs))))
 209 $(foreach class,$(classes), \
 210         $(foreach type,$(call filetypes-of-class,$(class)), \
 211                 $(eval $(call create_cc_template,$(class),$(type),$($(class)-$(type)-ccopts),$($(class)-$(type)-deps)))))
 212
 213 foreach-src=$(foreach file,$($(1)-srcs),$(eval $(call $(1)-objs_$(subst .,,$(suffix $(file)))_template,$(subst src/,,$(basename $(file))))))
 214 $(eval $(foreach class,$(classes),$(call foreach-src,$(class))))
 215
 216 DEPENDENCIES = $(originalobjs:.o=.d)
 217 -include $(DEPENDENCIES)
 218
 219 printall:
 220         @$(foreach class,$(classes),echo $(class)-objs:=$($(class)-objs); )
 221         @echo alldirs:=$(alldirs)
 222         @echo allsrcs=$(allsrcs)
 223         @echo DEPENDENCIES=$(DEPENDENCIES)
 224         @echo LIBGCC_FILE_NAME=$(LIBGCC_FILE_NAME_$(class))
 225         @$(foreach class,$(special-classes),echo $(class):='$($(class))'; )
 226
 227 endif
 228
 229 ifndef NOMKDIR
 230 $(shell mkdir -p $(KCONFIG_SPLITCONFIG) $(objutil)/kconfig/lxdialog $(additional-dirs) $(alldirs))
 231 endif
 232
 233 cscope:
 234         cscope -bR
 235
 236 doxy: doxygen
 237 doxygen:
 238         $(DOXYGEN) documentation/Doxyfile.coreboot
 239
 240 doxyclean: doxygen-clean
 241 doxygen-clean:
 242         rm -rf $(DOXYGEN_OUTPUT_DIR)
 243
 244 clean-for-update: doxygen-clean clean-for-update-target
 245         rm -rf $(obj) .xcompile
 246
 247 clean: clean-for-update clean-target
 248         rm -f .ccwrap
 249
 250 clean-cscope:
 251         rm -f cscope.out
 252
 253 distclean: clean
 254         rm -f .config .config.old ..config.tmp .kconfig.d .tmpconfig* .ccwrap .xcompile
 255
 256 .PHONY: $(PHONY) clean clean-for-update clean-cscope cscope distclean doxygen doxy .xcompile