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 ifeq ($(INNER_SCANBUILD),y)
  34 CC_real:=$(CC)
  35 endif
  36
  37 $(if $(wildcard .xcompile),,$(eval $(shell bash util/xcompile/xcompile $(XGCCPATH) > .xcompile)))
  38 include .xcompile
  39
  40 ifeq ($(INNER_SCANBUILD),y)
  41 CC:=$(CC_real)
  42 HOSTCC:=$(CC_real) --hostcc
  43 HOSTCXX:=$(CC_real) --hostcxx
  44 endif
  45
  46 export top := $(CURDIR)
  47 export src := src
  48 export srck := $(top)/util/kconfig
  49 export obj ?= build
  50 export objutil ?= $(obj)/util
  51 export objk := $(objutil)/kconfig
  52
  53
  54 export KCONFIG_AUTOHEADER := $(obj)/config.h
  55 export KCONFIG_AUTOCONFIG := $(obj)/auto.conf
  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 ($(filter %config %clean,$(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 $(HAVE_DOTCONFIG)
 115
 116 ARCHDIR-$(CONFIG_ARCH_ARMV7)   := armv7
 117 ARCHDIR-$(CONFIG_ARCH_X86)     := x86
 118
 119 ARCH-y := $(ARCHDIR-y)
 120
 121 # If architecture folder name is different from GCC binutils architecture name,
 122 # override here.
 123 ARCH-$(CONFIG_ARCH_ARMV7)   := armv7
 124 ARCH-$(CONFIG_ARCH_X86)     := i386
 125
 126 ifneq ($(INNER_SCANBUILD),y)
 127 CC := $(CC_$(ARCH-y))
 128 endif
 129 CPP := $(CPP_$(ARCH-y))
 130 AS := $(AS_$(ARCH-y))
 131 LD := $(LD_$(ARCH-y))
 132 NM := $(NM_$(ARCH-y))
 133 OBJCOPY := $(OBJCOPY_$(ARCH-y))
 134 OBJDUMP := $(OBJDUMP_$(ARCH-y))
 135 READELF := $(READELF_$(ARCH-y))
 136 STRIP := $(STRIP_$(ARCH-y))
 137 AR := $(AR_$(ARCH-y))
 138
 139 CFLAGS += $(CFLAGS_$(ARCH-y))
 140
 141 LIBGCC_FILE_NAME := $(shell test -r `$(CC) -print-libgcc-file-name` && \
 142                       $(CC) -print-libgcc-file-name)
 143
 144 ifneq ($(INNER_SCANBUILD),y)
 145 ifeq ($(CONFIG_COMPILER_LLVM_CLANG),y)
 146 CC:=clang -m32 -mno-mmx -mno-sse
 147 HOSTCC:=clang
 148 endif
 149 endif
 150
 151 ifeq ($(CONFIG_CCACHE),y)
 152 CCACHE:=$(word 1,$(wildcard $(addsuffix /ccache,$(subst :, ,$(PATH)))))
 153 ifeq ($(CCACHE),)
 154 $(error ccache selected, but not found in PATH)
 155 endif
 156 CCACHE:=CCACHE_COMPILERCHECK=content CCACHE_BASEDIR=$(top) $(CCACHE)
 157 CC := $(CCACHE) $(CC)
 158 HOSTCC := $(CCACHE) $(HOSTCC)
 159 HOSTCXX := $(CCACHE) $(HOSTCXX)
 160 ROMCC := $(CCACHE) $(ROMCC)
 161 endif
 162
 163 strip_quotes = $(subst ",,$(subst \",,$(1)))
 164
 165 # The primary target needs to be here before we include the
 166 # other files
 167
 168 ifeq ($(INNER_SCANBUILD),y)
 169 CONFIG_SCANBUILD_ENABLE:=
 170 endif
 171
 172 ifeq ($(CONFIG_SCANBUILD_ENABLE),y)
 173 ifneq ($(CONFIG_SCANBUILD_REPORT_LOCATION),)
 174 CONFIG_SCANBUILD_REPORT_LOCATION:=-o $(CONFIG_SCANBUILD_REPORT_LOCATION)
 175 endif
 176 real-all:
 177         echo '#!/bin/sh' > .ccwrap
 178         echo 'CC="$(CC)"' >> .ccwrap
 179         echo 'if [ "$$1" = "--hostcc" ]; then shift; CC="$(HOSTCC)"; fi' >> .ccwrap
 180         echo 'if [ "$$1" = "--hostcxx" ]; then shift; CC="$(HOSTCXX)"; fi' >> .ccwrap
 181         echo 'eval $$CC $$*' >> .ccwrap
 182         chmod +x .ccwrap
 183         scan-build $(CONFIG_SCANBUILD_REPORT_LOCATION) -analyze-headers --use-cc=$(top)/.ccwrap --use-c++=$(top)/.ccwrap $(MAKE) INNER_SCANBUILD=y
 184 else
 185 real-all: real-target
 186 endif
 187
 188 # must come rather early
 189 .SECONDEXPANSION:
 190
 191 $(obj)/config.h:
 192         $(MAKE) oldconfig
 193
 194 # Add a new class of source/object files to the build system
 195 add-class= \
 196         $(eval $(1)-srcs:=) \
 197         $(eval $(1)-objs:=) \
 198         $(eval classes+=$(1))
 199
 200 # Special classes are managed types with special behaviour
 201 # On parse time, for each entry in variable $(1)-y
 202 # a handler $(1)-handler is executed with the arguments:
 203 # * $(1): directory the parser is in
 204 # * $(2): current entry
 205 add-special-class= \
 206         $(eval $(1):=) \
 207         $(eval special-classes+=$(1))
 208
 209 # Clean -y variables, include Makefile.inc
 210 # Add paths to files in X-y to X-srcs
 211 # Add subdirs-y to subdirs
 212 includemakefiles= \
 213         $(foreach class,classes subdirs $(classes) $(special-classes), $(eval $(class)-y:=)) \
 214         $(eval -include $(1)) \
 215         $(foreach class,$(classes-y), $(call add-class,$(class))) \
 216         $(foreach class,$(classes), \
 217                 $(eval $(class)-srcs+= \
 218                         $$(subst $(top)/,, \
 219                         $$(abspath $$(subst $(dir $(1))/,/,$$(addprefix $(dir $(1)),$$($(class)-y))))))) \
 220         $(foreach special,$(special-classes), \
 221                 $(foreach item,$($(special)-y), $(call $(special)-handler,$(dir $(1)),$(item)))) \
 222         $(eval subdirs+=$$(subst $(CURDIR)/,,$$(abspath $$(addprefix $(dir $(1)),$$(subdirs-y)))))
 223
 224 # For each path in $(subdirs) call includemakefiles
 225 # Repeat until subdirs is empty
 226 evaluate_subdirs= \
 227         $(eval cursubdirs:=$(subdirs)) \
 228         $(eval subdirs:=) \
 229         $(foreach dir,$(cursubdirs), \
 230                 $(eval $(call includemakefiles,$(dir)/Makefile.inc))) \
 231         $(if $(subdirs),$(eval $(call evaluate_subdirs)))
 232
 233 # collect all object files eligible for building
 234 subdirs:=$(TOPLEVEL)
 235 $(eval $(call evaluate_subdirs))
 236 ifeq ($(FAILBUILD),1)
 237 $(error cannot continue build)
 238 endif
 239
 240 # Eliminate duplicate mentions of source files in a class
 241 $(foreach class,$(classes),$(eval $(class)-srcs:=$(sort $($(class)-srcs))))
 242
 243 src-to-obj=$(addsuffix .$(1).o, $(basename $(patsubst src/%, $(obj)/%, $($(1)-srcs))))
 244 $(foreach class,$(classes),$(eval $(class)-objs:=$(call src-to-obj,$(class))))
 245
 246 # Save all objs before processing them (for dependency inclusion)
 247 originalobjs:=$(foreach var, $(addsuffix -objs,$(classes)), $($(var)))
 248
 249 # Call post-processors if they're defined
 250 $(foreach class,$(classes),\
 251         $(if $(value $(class)-postprocess),$(eval $(call $(class)-postprocess,$($(class)-objs)))))
 252
 253 allsrcs:=$(foreach var, $(addsuffix -srcs,$(classes)), $($(var)))
 254 allobjs:=$(foreach var, $(addsuffix -objs,$(classes)), $($(var)))
 255 alldirs:=$(sort $(abspath $(dir $(allobjs))))
 256
 257 # macro to define template macros that are used by use_template macro
 258 define create_cc_template
 259 # $1 obj class
 260 # $2 source suffix (c, S)
 261 # $3 additional compiler flags
 262 # $4 additional dependencies
 263 ifn$(EMPTY)def $(1)-objs_$(2)_template
 264 de$(EMPTY)fine $(1)-objs_$(2)_template
 265 $(obj)/$$(1).$(1).o: src/$$(1).$(2) $(obj)/config.h $(4)
 266         @printf "    CC         $$$$(subst $$$$(obj)/,,$$$$(@))\n"
 267         $(CC) $(3) -MMD $$$$(CFLAGS) -c -o $$$$@ $$$$<
 268 en$(EMPTY)def
 269 end$(EMPTY)if
 270 endef
 271
 272 filetypes-of-class=$(subst .,,$(sort $(suffix $($(1)-srcs))))
 273 $(foreach class,$(classes), \
 274         $(foreach type,$(call filetypes-of-class,$(class)), \
 275                 $(eval $(call create_cc_template,$(class),$(type),$($(class)-$(type)-ccopts),$($(class)-$(type)-deps)))))
 276
 277 foreach-src=$(foreach file,$($(1)-srcs),$(eval $(call $(1)-objs_$(subst .,,$(suffix $(file)))_template,$(subst src/,,$(basename $(file))))))
 278 $(eval $(foreach class,$(classes),$(call foreach-src,$(class))))
 279
 280 DEPENDENCIES = $(originalobjs:.o=.d)
 281 -include $(DEPENDENCIES)
 282
 283 printall:
 284         @$(foreach class,$(classes),echo $(class)-objs:=$($(class)-objs); )
 285         @echo alldirs:=$(alldirs)
 286         @echo allsrcs=$(allsrcs)
 287         @echo DEPENDENCIES=$(DEPENDENCIES)
 288         @echo LIBGCC_FILE_NAME=$(LIBGCC_FILE_NAME)
 289         @$(foreach class,$(special-classes),echo $(class):='$($(class))'; )
 290
 291 endif
 292
 293 ifndef NOMKDIR
 294 $(shell mkdir -p $(obj) $(objutil)/kconfig/lxdialog $(additional-dirs) $(alldirs))
 295 endif
 296
 297 cscope:
 298         cscope -bR
 299
 300 doxy: doxygen
 301 doxygen:
 302         $(DOXYGEN) documentation/Doxyfile.coreboot
 303
 304 doxyclean: doxygen-clean
 305 doxygen-clean:
 306         rm -rf $(DOXYGEN_OUTPUT_DIR)
 307
 308 clean-for-update: doxygen-clean clean-for-update-target
 309         rm -rf $(obj) .xcompile
 310
 311 clean: clean-for-update clean-target
 312         rm -f .ccwrap
 313
 314 clean-cscope:
 315         rm -f cscope.out
 316
 317 distclean: clean
 318         rm -f .config .config.old ..config.tmp .kconfig.d .tmpconfig* .ccwrap .xcompile
 319
 320 .PHONY: $(PHONY) clean clean-for-update clean-cscope cscope distclean doxygen doxy .xcompile