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 include .xcompile
  42
  43 export top := $(CURDIR)
  44 export src := src
  45 export srck := $(top)/util/kconfig
  46 export obj ?= build
  47 export objutil ?= $(obj)/util
  48 export objk := $(objutil)/kconfig
  49
  50
  51 export KCONFIG_AUTOHEADER := $(obj)/config.h
  52 export KCONFIG_AUTOCONFIG := $(obj)/auto.conf
  53 export KCONFIG_DEPENDENCIES := $(obj)/auto.conf.cmd
  54 export KCONFIG_SPLITCONFIG := $(obj)/config
  55 export KCONFIG_TRISTATE := $(obj)/tristate.conf
  56 export KCONFIG_NEGATIVES := 1
  57
  58 # directory containing the toplevel Makefile.inc
  59 TOPLEVEL := .
  60
  61 CONFIG_SHELL := sh
  62 KBUILD_DEFCONFIG := configs/defconfig
  63 UNAME_RELEASE := $(shell uname -r)
  64 DOTCONFIG ?= .config
  65 KCONFIG_CONFIG = $(DOTCONFIG)
  66 export KCONFIG_CONFIG
  67 HAVE_DOTCONFIG := $(wildcard $(DOTCONFIG))
  68 MAKEFLAGS += -rR --no-print-directory
  69
  70 # Make is silent per default, but 'make V=1' will show all compiler calls.
  71 Q:=@
  72 ifneq ($(V),1)
  73 ifneq ($(Q),)
  74 .SILENT:
  75 endif
  76 endif
  77
  78 # Disable implicit/built-in rules to make Makefile errors fail fast.
  79 .SUFFIXES:
  80
  81 HOSTCC := gcc
  82 HOSTCXX = g++
  83 HOSTCFLAGS := -g
  84 HOSTCXXFLAGS := -g
  85
  86 PREPROCESS_ONLY := -E -P -x assembler-with-cpp -undef -I .
  87
  88 DOXYGEN := doxygen
  89 DOXYGEN_OUTPUT_DIR := doxygen
  90
  91 all: real-all
  92
  93 # This include must come _before_ the pattern rules below!
  94 # Order _does_ matter for pattern rules.
  95 include util/kconfig/Makefile
  96
  97 # Three cases where we don't need fully populated $(obj) lists:
  98 # 1. when no .config exists
  99 # 2. when make config (in any flavour) is run
 100 # 3. when make distclean is run
 101 # Don't waste time on reading all Makefile.incs in these cases
 102 ifeq ($(strip $(HAVE_DOTCONFIG)),)
 103 NOCOMPILE:=1
 104 endif
 105 ifneq ($(MAKECMDGOALS),)
 106 ifneq ($(filter %config %clean cross% lint% what-jenkins-does,$(MAKECMDGOALS)),)
 107 NOCOMPILE:=1
 108 endif
 109 ifeq ($(MAKECMDGOALS), %clean)
 110 NOMKDIR:=1
 111 endif
 112 endif
 113
 114 ifeq ($(NOCOMPILE),1)
 115 include $(TOPLEVEL)/Makefile.inc
 116 real-all: config
 117
 118 else
 119
 120 include $(HAVE_DOTCONFIG)
 121
 122 ifeq ($(CONFIG_COMPILER_LLVM_CLANG),y)
 123 # FIXME: armv7/aarch64 won't build right now
 124 # NOTE: clang puts compiler-rt under lib/linux/libclang_rt.builtins-i386.a
 125 # this means the triple is i386-linux-elf instead of i386-none-elf
 126 CFLAGS_x86_32 = -no-integrated-as -Qunused-arguments -target i386-linux-elf -m32
 127 # Tone down some clang warnings
 128 CFLAGS_x86_32 += -Wno-unused-variable -Wno-unused-function -Wno-tautological-compare -Wno-shift-overflow
 129 CC_x86_32:=clang
 130 HOSTCC := clang
 131
 132 ifneq ($(CONFIG_MMX),y)
 133 CFLAGS_x86_32 += -mno-mmx
 134 endif
 135
 136 # FIXME: we end up with conflicting flags with this, not clear on this part.
 137 #ifneq ($(CONFIG_SSE),y)
 138 #CFLAGS_x86_32 += -mno-sse
 139 #endif
 140
 141 CFLAGS_arm = -no-integrated-as -Qunused-arguments -target arm-eabi -ccc-gcc-name $(CC_arm)
 142 CC_arm:=clang
 143
 144 CFLAGS_aarch64 = -no-integrated-as -Qunused-arguments -target aarch64-eabi -ccc-gcc-name $(CC_aarch64)
 145 CC_aarch64:=clang
 146 endif
 147
 148 include toolchain.inc
 149
 150 strip_quotes = $(subst ",,$(subst \",,$(1)))
 151
 152 # The primary target needs to be here before we include the
 153 # other files
 154
 155 real-all: real-target
 156
 157 # must come rather early
 158 .SECONDEXPANSION:
 159
 160 $(obj)/config.h:
 161         $(MAKE) oldconfig
 162
 163 # Add a new class of source/object files to the build system
 164 add-class= \
 165         $(eval $(1)-srcs:=) \
 166         $(eval $(1)-objs:=) \
 167         $(eval classes+=$(1))
 168
 169 # Special classes are managed types with special behaviour
 170 # On parse time, for each entry in variable $(1)-y
 171 # a handler $(1)-handler is executed with the arguments:
 172 # * $(1): directory the parser is in
 173 # * $(2): current entry
 174 add-special-class= \
 175         $(eval $(1):=) \
 176         $(eval special-classes+=$(1))
 177
 178 # Clean -y variables, include Makefile.inc
 179 # Add paths to files in X-y to X-srcs
 180 # Add subdirs-y to subdirs
 181 includemakefiles= \
 182         $(foreach class,classes subdirs $(classes) $(special-classes), $(eval $(class)-y:=)) \
 183         $(eval -include $(1)) \
 184         $(foreach class,$(classes-y), $(call add-class,$(class))) \
 185         $(foreach class,$(classes), \
 186                 $(eval $(class)-srcs+= \
 187                         $$(subst $(top)/,, \
 188                         $$(abspath $$(subst $(dir $(1))/,/,$$(addprefix $(dir $(1)),$$($(class)-y))))))) \
 189         $(foreach special,$(special-classes), \
 190                 $(foreach item,$($(special)-y), $(call $(special)-handler,$(dir $(1)),$(item)))) \
 191         $(eval subdirs+=$$(subst $(CURDIR)/,,$$(abspath $$(addprefix $(dir $(1)),$$(subdirs-y)))))
 192
 193 # For each path in $(subdirs) call includemakefiles
 194 # Repeat until subdirs is empty
 195 evaluate_subdirs= \
 196         $(eval cursubdirs:=$(subdirs)) \
 197         $(eval subdirs:=) \
 198         $(foreach dir,$(cursubdirs), \
 199                 $(eval $(call includemakefiles,$(dir)/Makefile.inc))) \
 200         $(if $(subdirs),$(eval $(call evaluate_subdirs)))
 201
 202 # collect all object files eligible for building
 203 subdirs:=$(TOPLEVEL)
 204 $(eval $(call evaluate_subdirs))
 205 ifeq ($(FAILBUILD),1)
 206 $(error cannot continue build)
 207 endif
 208
 209 # Eliminate duplicate mentions of source files in a class
 210 $(foreach class,$(classes),$(eval $(class)-srcs:=$(sort $($(class)-srcs))))
 211
 212 # Converts one or more source file paths to their corresponding build/ paths.
 213 # Only .c and .S get converted to .o, other files (like .ld) keep their name.
 214 # $1 stage name
 215 # $2 file path (list)
 216 src-to-obj=$(foreach file,$(2),$(subst .$(1),,$(basename $(patsubst src/%,$(obj)/%,$(file)))).$(1)$(patsubst %.c,%.o,$(patsubst %.S,%.o,$(suffix $(file)))))
 217
 218 $(foreach class,$(classes),$(eval $(class)-objs:=$(call src-to-obj,$(class),$($(class)-srcs))))
 219
 220 # Save all objs before processing them (for dependency inclusion)
 221 originalobjs:=$(foreach var, $(addsuffix -objs,$(classes)), $($(var)))
 222
 223 # Call post-processors if they're defined
 224 $(foreach class,$(classes),\
 225         $(if $(value $(class)-postprocess),$(eval $(call $(class)-postprocess,$($(class)-objs)))))
 226
 227 allsrcs:=$(foreach var, $(addsuffix -srcs,$(classes)), $($(var)))
 228 allobjs:=$(foreach var, $(addsuffix -objs,$(classes)), $($(var)))
 229 alldirs:=$(sort $(abspath $(dir $(allobjs))))
 230
 231 # macro to define template macros that are used by use_template macro
 232 define create_cc_template
 233 # $1 obj class
 234 # $2 source suffix (c, S, ld, ...)
 235 # $3 additional compiler flags
 236 # $4 additional dependencies
 237 ifn$(EMPTY)def $(1)-objs_$(2)_template
 238 de$(EMPTY)fine $(1)-objs_$(2)_template
 239 $$(call src-to-obj,$1,$$(1).$2): $$(1).$2 $(obj)/config.h $(4)
 240         @printf "    CC         $$$$(subst $$$$(obj)/,,$$$$(@))\n"
 241         $(CC_$(1)) -MMD $$$$(CPPFLAGS_$(1)) $$$$(CFLAGS_$(1)) -MT $$$$(@) $(3) -c -o $$$$@ $$$$<
 242 en$(EMPTY)def
 243 end$(EMPTY)if
 244 endef
 245
 246 filetypes-of-class=$(subst .,,$(sort $(suffix $($(1)-srcs))))
 247 $(foreach class,$(classes), \
 248         $(foreach type,$(call filetypes-of-class,$(class)), \
 249                 $(eval $(class)-$(type)-ccopts += $(generic-$(type)-ccopts) $($(class)-generic-ccopts)) \
 250                 $(if $(generic-objs_$(type)_template_gen),$(eval $(call generic-objs_$(type)_template_gen,$(class))),\
 251                 $(eval $(call create_cc_template,$(class),$(type),$($(class)-$(type)-ccopts),$($(class)-$(type)-deps))))))
 252
 253 foreach-src=$(foreach file,$($(1)-srcs),$(eval $(call $(1)-objs_$(subst .,,$(suffix $(file)))_template,$(basename $(file)))))
 254 $(eval $(foreach class,$(classes),$(call foreach-src,$(class))))
 255
 256 DEPENDENCIES += $(addsuffix .d,$(basename $(allobjs)))
 257 -include $(DEPENDENCIES)
 258
 259 printall:
 260         @$(foreach class,$(classes),echo $(class)-objs:=$($(class)-objs); )
 261         @echo alldirs:=$(alldirs)
 262         @echo allsrcs=$(allsrcs)
 263         @echo DEPENDENCIES=$(DEPENDENCIES)
 264         @$(foreach class,$(special-classes),echo $(class):='$($(class))'; )
 265
 266 endif
 267
 268 ifndef NOMKDIR
 269 $(shell mkdir -p $(KCONFIG_SPLITCONFIG) $(objutil)/kconfig/lxdialog $(additional-dirs) $(alldirs))
 270 endif
 271
 272 cscope:
 273         cscope -bR
 274
 275 doxy: doxygen
 276 doxygen:
 277         $(DOXYGEN) documentation/Doxyfile.coreboot
 278
 279 doxygen_simple:
 280         $(DOXYGEN) documentation/Doxyfile.coreboot_simple
 281
 282 doxyclean: doxygen-clean
 283 doxygen-clean:
 284         rm -rf $(DOXYGEN_OUTPUT_DIR)
 285
 286 clean-for-update: doxygen-clean clean-for-update-target
 287         rm -rf $(obj) .xcompile
 288
 289 clean: clean-for-update clean-target
 290         rm -f .ccwrap
 291
 292 clean-cscope:
 293         rm -f cscope.out
 294
 295 distclean: clean
 296         rm -f .config .config.old ..config.tmp .kconfig.d .tmpconfig* .ccwrap .xcompile
 297
 298 .PHONY: $(PHONY) clean clean-for-update clean-cscope cscope distclean doxygen doxy doxygen_simple