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