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         A=`mktemp $@.XXXXXX`; $< $(XGCCPATH) > $$A && mv $$A $@ 2> /dev/null
  39
  40 include .xcompile
  41
  42 export top := $(CURDIR)
  43 export src := src
  44 export srck := $(top)/util/kconfig
  45 export obj ?= build
  46 export objutil ?= $(obj)/util
  47 export objk := $(objutil)/kconfig
  48
  49
  50 export KCONFIG_AUTOHEADER := $(obj)/config.h
  51 export KCONFIG_AUTOCONFIG := $(obj)/auto.conf
  52 export KCONFIG_DEPENDENCIES := $(obj)/auto.conf.cmd
  53 export KCONFIG_SPLITCONFIG := $(obj)/config
  54 export KCONFIG_TRISTATE := $(obj)/tristate.conf
  55 export KCONFIG_NEGATIVES := 1
  56
  57 # directory containing the toplevel Makefile.inc
  58 TOPLEVEL := .
  59
  60 CONFIG_SHELL := sh
  61 KBUILD_DEFCONFIG := configs/defconfig
  62 UNAME_RELEASE := $(shell uname -r)
  63 DOTCONFIG ?= .config
  64 KCONFIG_CONFIG = $(DOTCONFIG)
  65 export KCONFIG_CONFIG
  66 HAVE_DOTCONFIG := $(wildcard $(DOTCONFIG))
  67 MAKEFLAGS += -rR --no-print-directory
  68
  69 # Make is silent per default, but 'make V=1' will show all compiler calls.
  70 Q:=@
  71 ifneq ($(V),1)
  72 ifneq ($(Q),)
  73 .SILENT:
  74 endif
  75 endif
  76
  77 HOSTCC := gcc
  78 HOSTCXX = g++
  79 HOSTCFLAGS := -g
  80 HOSTCXXFLAGS := -g
  81
  82 DOXYGEN := doxygen
  83 DOXYGEN_OUTPUT_DIR := doxygen
  84
  85 all: real-all
  86
  87 # This include must come _before_ the pattern rules below!
  88 # Order _does_ matter for pattern rules.
  89 include util/kconfig/Makefile
  90
  91 # Three cases where we don't need fully populated $(obj) lists:
  92 # 1. when no .config exists
  93 # 2. when make config (in any flavour) is run
  94 # 3. when make distclean is run
  95 # Don't waste time on reading all Makefile.incs in these cases
  96 ifeq ($(strip $(HAVE_DOTCONFIG)),)
  97 NOCOMPILE:=1
  98 endif
  99 ifneq ($(MAKECMDGOALS),)
 100 ifneq ($(filter %config %clean cross%,$(MAKECMDGOALS)),)
 101 NOCOMPILE:=1
 102 endif
 103 ifeq ($(MAKECMDGOALS), %clean)
 104 NOMKDIR:=1
 105 endif
 106 endif
 107
 108 ifeq ($(NOCOMPILE),1)
 109 include $(TOPLEVEL)/Makefile.inc
 110 real-all: config
 111
 112 else
 113
 114 include $(HAVE_DOTCONFIG)
 115
 116 ifeq ($(CONFIG_COMPILER_LLVM_CLANG),y)
 117 # FIXME: armv7/aarch64 won't build right now
 118 # NOTE: clang puts compiler-rt under lib/linux/libclang_rt.builtins-i386.a
 119 # this means the triple is i386-linux-elf instead of i386-none-elf
 120 CFLAGS_x86_32 = -no-integrated-as -Qunused-arguments -target i386-linux-elf -m32
 121 # Tone down some clang warnings
 122 CFLAGS_x86_32 += -Wno-unused-variable -Wno-unused-function -Wno-tautological-compare -Wno-shift-overflow
 123 CC_x86_32:=clang
 124 HOSTCC := clang
 125
 126 ifneq ($(CONFIG_MMX),y)
 127 CFLAGS_x86_32 += -mno-mmx
 128 endif
 129
 130 # FIXME: we end up with conflicting flags with this, not clear on this part.
 131 #ifneq ($(CONFIG_SSE),y)
 132 #CFLAGS_x86_32 += -mno-sse
 133 #endif
 134
 135 CFLAGS_arm = -no-integrated-as -Qunused-arguments -target arm-eabi -ccc-gcc-name $(CC_arm)
 136 CC_arm:=clang
 137
 138 CFLAGS_aarch64 = -no-integrated-as -Qunused-arguments -target aarch64-eabi -ccc-gcc-name $(CC_aarch64)
 139 CC_aarch64:=clang
 140 endif
 141
 142 include toolchain.inc
 143
 144 strip_quotes = $(subst ",,$(subst \",,$(1)))
 145
 146 # The primary target needs to be here before we include the
 147 # other files
 148
 149 real-all: real-target
 150
 151 # must come rather early
 152 .SECONDEXPANSION:
 153
 154 $(obj)/config.h:
 155         $(MAKE) oldconfig
 156
 157 # Add a new class of source/object files to the build system
 158 add-class= \
 159         $(eval $(1)-srcs:=) \
 160         $(eval $(1)-objs:=) \
 161         $(eval classes+=$(1))
 162
 163 # Special classes are managed types with special behaviour
 164 # On parse time, for each entry in variable $(1)-y
 165 # a handler $(1)-handler is executed with the arguments:
 166 # * $(1): directory the parser is in
 167 # * $(2): current entry
 168 add-special-class= \
 169         $(eval $(1):=) \
 170         $(eval special-classes+=$(1))
 171
 172 # Clean -y variables, include Makefile.inc
 173 # Add paths to files in X-y to X-srcs
 174 # Add subdirs-y to subdirs
 175 includemakefiles= \
 176         $(foreach class,classes subdirs $(classes) $(special-classes), $(eval $(class)-y:=)) \
 177         $(eval -include $(1)) \
 178         $(foreach class,$(classes-y), $(call add-class,$(class))) \
 179         $(foreach class,$(classes), \
 180                 $(eval $(class)-srcs+= \
 181                         $$(subst $(top)/,, \
 182                         $$(abspath $$(subst $(dir $(1))/,/,$$(addprefix $(dir $(1)),$$($(class)-y))))))) \
 183         $(foreach special,$(special-classes), \
 184                 $(foreach item,$($(special)-y), $(call $(special)-handler,$(dir $(1)),$(item)))) \
 185         $(eval subdirs+=$$(subst $(CURDIR)/,,$$(abspath $$(addprefix $(dir $(1)),$$(subdirs-y)))))
 186
 187 # For each path in $(subdirs) call includemakefiles
 188 # Repeat until subdirs is empty
 189 evaluate_subdirs= \
 190         $(eval cursubdirs:=$(subdirs)) \
 191         $(eval subdirs:=) \
 192         $(foreach dir,$(cursubdirs), \
 193                 $(eval $(call includemakefiles,$(dir)/Makefile.inc))) \
 194         $(if $(subdirs),$(eval $(call evaluate_subdirs)))
 195
 196 # collect all object files eligible for building
 197 subdirs:=$(TOPLEVEL)
 198 $(eval $(call evaluate_subdirs))
 199 ifeq ($(FAILBUILD),1)
 200 $(error cannot continue build)
 201 endif
 202
 203 # Eliminate duplicate mentions of source files in a class
 204 $(foreach class,$(classes),$(eval $(class)-srcs:=$(sort $($(class)-srcs))))
 205
 206 src-to-obj=$(addsuffix .$(1).o, $(basename $(patsubst src/%, $(obj)/%, $($(1)-srcs))))
 207 $(foreach class,$(classes),$(eval $(class)-objs:=$(call src-to-obj,$(class))))
 208
 209 # Save all objs before processing them (for dependency inclusion)
 210 originalobjs:=$(foreach var, $(addsuffix -objs,$(classes)), $($(var)))
 211
 212 # Call post-processors if they're defined
 213 $(foreach class,$(classes),\
 214         $(if $(value $(class)-postprocess),$(eval $(call $(class)-postprocess,$($(class)-objs)))))
 215
 216 allsrcs:=$(foreach var, $(addsuffix -srcs,$(classes)), $($(var)))
 217 allobjs:=$(foreach var, $(addsuffix -objs,$(classes)), $($(var)))
 218 alldirs:=$(sort $(abspath $(dir $(allobjs))))
 219
 220 # macro to define template macros that are used by use_template macro
 221 define create_cc_template
 222 # $1 obj class
 223 # $2 source suffix (c, S)
 224 # $3 additional compiler flags
 225 # $4 additional dependencies
 226 ifn$(EMPTY)def $(1)-objs_$(2)_template
 227 de$(EMPTY)fine $(1)-objs_$(2)_template
 228 $(obj)/$$(1).$(1).o: src/$$(1).$(2) $(obj)/config.h $(4)
 229         @printf "    CC         $$$$(subst $$$$(obj)/,,$$$$(@))\n"
 230         $(CC_$(1)) $(3) -MMD $$$$(CPPFLAGS_$(1)) $$$$(CFLAGS_$(1)) -c -o $$$$@ $$$$<
 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 $(call create_cc_template,$(class),$(type),$($(class)-$(type)-ccopts),$($(class)-$(type)-deps)))))
 239
 240 foreach-src=$(foreach file,$($(1)-srcs),$(eval $(call $(1)-objs_$(subst .,,$(suffix $(file)))_template,$(subst src/,,$(basename $(file))))))
 241 $(eval $(foreach class,$(classes),$(call foreach-src,$(class))))
 242
 243 DEPENDENCIES = $(originalobjs:.o=.d)
 244 -include $(DEPENDENCIES)
 245
 246 printall:
 247         @$(foreach class,$(classes),echo $(class)-objs:=$($(class)-objs); )
 248         @echo alldirs:=$(alldirs)
 249         @echo allsrcs=$(allsrcs)
 250         @echo DEPENDENCIES=$(DEPENDENCIES)
 251         @$(foreach class,$(special-classes),echo $(class):='$($(class))'; )
 252
 253 endif
 254
 255 ifndef NOMKDIR
 256 $(shell mkdir -p $(KCONFIG_SPLITCONFIG) $(objutil)/kconfig/lxdialog $(additional-dirs) $(alldirs))
 257 endif
 258
 259 cscope:
 260         cscope -bR
 261
 262 doxy: doxygen
 263 doxygen:
 264         $(DOXYGEN) documentation/Doxyfile.coreboot
 265
 266 doxygen_simple:
 267         $(DOXYGEN) documentation/Doxyfile.coreboot_simple
 268
 269 doxyclean: doxygen-clean
 270 doxygen-clean:
 271         rm -rf $(DOXYGEN_OUTPUT_DIR)
 272
 273 clean-for-update: doxygen-clean clean-for-update-target
 274         rm -rf $(obj) .xcompile
 275
 276 clean: clean-for-update clean-target
 277         rm -f .ccwrap
 278
 279 clean-cscope:
 280         rm -f cscope.out
 281
 282 distclean: clean
 283         rm -f .config .config.old ..config.tmp .kconfig.d .tmpconfig* .ccwrap .xcompile
 284
 285 .PHONY: $(PHONY) clean clean-for-update clean-cscope cscope distclean doxygen doxy doxygen_simple