1  ##
  2  ##
  3  ## Copyright (C) 2008 Advanced Micro Devices, Inc.
  4  ## Copyright (C) 2008 Uwe Hermann <uwe@hermann-uwe.de>
  5  ## Copyright (C) 2009-2010 coresystems GmbH
  6  ## Copyright (C) 2011 secunet Security Networks AG
  7  ##
  8  ## Redistribution and use in source and binary forms, with or without
  9  ## modification, are permitted provided that the following conditions
 10  ## are met:
 11  ## 1. Redistributions of source code must retain the above copyright
 12  ##    notice, this list of conditions and the following disclaimer.
 13  ## 2. Redistributions in binary form must reproduce the above copyright
 14  ##    notice, this list of conditions and the following disclaimer in the
 15  ##    documentation and/or other materials provided with the distribution.
 16  ## 3. The name of the author may not be used to endorse or promote products
 17  ##    derived from this software without specific prior written permission.
 18  ##
 19  ## THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 20  ## ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 21  ## IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 22  ## ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 23  ## FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 24  ## DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 25  ## OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 26  ## HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 27  ## LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 28  ## OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 29  ## SUCH DAMAGE.
 30  ##
 31  
 32  ifneq ($(words $(CURDIR)),1)
 33  	$(error ERROR: Path to the main directory cannot contain spaces)
 34  endif
 35  
 36  ifeq ($(INNER_SCANBUILD),y)
 37  CC_real:=$(CC)
 38  endif
 39  
 40  export top := $(CURDIR)
 41  export coreboottop ?= $(abspath $(top)/../../)
 42  export src := src
 43  export srck := $(abspath $(top)/../../util/kconfig)
 44  export obj ?= build
 45  export objutil ?= $(obj)/util
 46  export objk := $(objutil)/lp_kconfig
 47  export absobj := $(abspath $(obj))
 48  VBOOT_SOURCE ?= $(coreboottop)/3rdparty/vboot
 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  export KBUILD_KCONFIG := Kconfig
 57  export CONFIG_ := CONFIG_LP_
 58  
 59  # directory containing the toplevel Makefile.mk
 60  TOPLEVEL := .
 61  
 62  CONFIG_LP_SHELL := sh
 63  KBUILD_DEFCONFIG ?= configs/defconfig
 64  UNAME_RELEASE := $(shell uname -r)
 65  DOTCONFIG ?= .config
 66  KCONFIG_CONFIG = $(DOTCONFIG)
 67  export KCONFIG_CONFIG
 68  HAVE_DOTCONFIG := $(wildcard $(DOTCONFIG))
 69  MAKEFLAGS += -rR --no-print-directory
 70  
 71  # Make is silent per default, but 'make V=1' will show all compiler calls.
 72  Q:=@
 73  ifneq ($(V),1)
 74  ifneq ($(Q),)
 75  .SILENT:
 76  endif
 77  endif
 78  
 79  CPP:= $(CC) -x assembler-with-cpp -DASSEMBLY -E
 80  HOSTCC = gcc
 81  HOSTCXX = g++
 82  HOSTCFLAGS := -I$(srck) -I$(objk) -g
 83  HOSTCXXFLAGS := -I$(srck) -I$(objk)
 84  HOSTAS ?= as
 85  HOSTLD ?= ld
 86  HOSTNM ?= nm
 87  HOSTOBJCOPY ?= objcopy
 88  HOSTOBJDUMP ?= objdump
 89  HOSTREADELF ?= readelf
 90  HOSTSTRIP ?= strip
 91  HOSTAR ?= ar
 92  
 93  DOXYGEN := doxygen
 94  DOXYGEN_OUTPUT_DIR := doxygen
 95  
 96  all: real-all
 97  
 98  ifeq ($(INNER_SCANBUILD),y)
 99  CC:=$(CC_real)
100  HOSTCC:=$(CC_real) --hostcc
101  HOSTCXX:=$(CC_real) --hostcxx
102  endif
103  
104  # This include must come _before_ the pattern rules below!
105  # Order _does_ matter for pattern rules.
106  include $(srck)/Makefile.mk
107  
108  include $(HAVE_DOTCONFIG)
109  
110  ARCHDIR-$(CONFIG_LP_ARCH_ARM)     := arm
111  ARCHDIR-$(CONFIG_LP_ARCH_ARM64)   := arm64
112  ARCHDIR-$(CONFIG_LP_ARCH_X86)     := x86
113  ARCHDIR-$(CONFIG_LP_ARCH_MOCK)    := mock
114  
115  ARCH-y := $(ARCHDIR-y)
116  
117  # If architecture folder name is different from xcompile architecture name,
118  # override here.
119  ARCH-$(CONFIG_LP_ARCH_ARM)     := arm
120  ARCH-$(CONFIG_LP_ARCH_ARM64)   := arm64
121  ARCH-$(CONFIG_LP_ARCH_X86_32)  := x86_32
122  ARCH-$(CONFIG_LP_ARCH_X86_64)  := x86_64
123  ARCH-$(CONFIG_LP_ARCH_MOCK)    := mock
124  
125  # Five cases where we don't need fully populated $(obj) lists:
126  # 1. when no .config exists
127  # 2. when make config (in any flavour) is run
128  # 3. when make distclean is run
129  # 4. when make help% or make clean% is run
130  # 5. when make %-test or make %-tests or make %coverage-report is run
131  # Don't waste time on reading all Makefiles in these cases
132  ifeq ($(strip $(HAVE_DOTCONFIG)),)
133  NOCOMPILE := 1
134  endif
135  ifneq ($(MAKECMDGOALS),)
136  ifneq ($(filter %config %clean clean-% help%,$(MAKECMDGOALS)),)
137  NOCOMPILE := 1
138  endif
139  ifneq ($(filter %clean help% clean%, $(MAKECMDGOALS)),)
140  UNIT_TEST := 1
141  endif
142  endif
143  
144  ifneq ($(filter help%, $(MAKECMDGOALS)),)
145  NOCOMPILE := 1
146  UNIT_TEST := 1
147  else
148  ifneq ($(filter %-test %-tests %coverage-report, $(MAKECMDGOALS)),)
149  ifneq ($(filter-out %-test %-tests %coverage-report, $(MAKECMDGOALS)),)
150  $(error Cannot mix unit-tests targets with other targets)
151  endif
152  NOCOMPILE :=
153  UNIT_TEST := 1
154  endif
155  endif
156  
157  xcompile ?= $(obj)/xcompile
158  $(xcompile): $(top)/../../util/xcompile/xcompile
159  	$< $(XGCCPATH) > $@.tmp
160  	\mv -f $@.tmp $@ 2> /dev/null
161  
162  ifeq ($(NOCOMPILE),1)
163  include $(TOPLEVEL)/Makefile.mk
164  include $(TOPLEVEL)/tests/Makefile.mk
165  real-all: config
166  
167  else
168  
169  ifeq ($(CONFIG_LP_ARCH_MOCK),y)
170  
171  # Create empty xcompile to satisfy install script
172  $(shell echo '' > $(xcompile))
173  
174  CC := $(HOSTCC)
175  CC-mock := $(HOSTCC)
176  AS := $(HOSTAS)
177  AS-mock := $(HOSTAS)
178  LD := $(HOSTLD)
179  LD-mock := $(HOSTLD)
180  NM := $(HOSTNM)
181  NM-mock := $(HOSTNM)
182  OBJCOPY := $(HOSTOBJCOPY)
183  OBJCOPY-mock := $(HOSTOBJCOPY)
184  OBJDUMP := $(HOSTOBJDUMP)
185  OBJDUMP-mock := $(HOSTOBJDUMP)
186  READELF := $(HOSTREADELF)
187  READELF-mock := $(HOSTEADELF)
188  STRIP := $(HOSTSTRIP)
189  STRIP-mock := $(HOSTSTRIP)
190  AR := $(HOSTAR)
191  AR-mock := $(HOSTAR)
192  else
193  
194  # in addition to the dependency below, create the file if it doesn't exist
195  # to silence stupid warnings about a file that would be generated anyway.
196  $(if $(wildcard $(xcompile)),,$(shell	\
197  	mkdir -p $(dir $(xcompile)) &&	\
198  	$(top)/../../util/xcompile/xcompile $(XGCCPATH) > $(xcompile) || rm -f $(xcompile)))
199  
200  include $(xcompile)
201  
202  ifneq ($(XCOMPILE_COMPLETE),1)
203  $(shell rm -f $(xcompile))
204  $(error $(xcompile) deleted because it's invalid. \
205  	Restarting the build should fix that, or explain the problem)
206  endif
207  
208  CC := $(CC_$(ARCH-y))
209  AS := $(AS_$(ARCH-y))
210  LD := $(LD_$(ARCH-y))
211  NM := $(NM_$(ARCH-y))
212  OBJCOPY := $(OBJCOPY_$(ARCH-y))
213  OBJDUMP := $(OBJDUMP_$(ARCH-y))
214  READELF := $(READELF_$(ARCH-y))
215  STRIP := $(STRIP_$(ARCH-y))
216  AR := $(AR_$(ARCH-y))
217  endif
218  
219  CFLAGS += -std=gnu11 $(CFLAGS_$(ARCH-y))
220  
221  ifneq ($(INNER_SCANBUILD),y)
222  ifeq ($(CONFIG_LP_COMPILER_LLVM_CLANG),y)
223  CC:=clang
224  ifneq ($(CONFIG_LP_ARCH_MOCK),y)
225  CC += -m32
226  endif
227  HOSTCC:=clang
228  endif
229  endif
230  
231  ifeq ($(CONFIG_LP_CCACHE),y)
232  CCACHE:=$(word 1,$(wildcard $(addsuffix /ccache,$(subst :, ,$(PATH)))))
233  ifeq ($(CCACHE),)
234  $(error ccache selected, but not found in PATH)
235  endif
236  CCACHE:=CCACHE_COMPILERCHECK=content CCACHE_BASEDIR=$(top) $(CCACHE)
237  CC := $(CCACHE) $(CC)
238  HOSTCC := $(CCACHE) $(HOSTCC)
239  HOSTCXX := $(CCACHE) $(HOSTCXX)
240  endif
241  
242  strip_quotes = $(subst ",,$(subst \",,$(1)))
243  
244  # The primary target needs to be here before we include the
245  # other files
246  
247  ifeq ($(INNER_SCANBUILD),y)
248  CONFIG_LP_SCANBUILD_ENABLE:=
249  endif
250  
251  ifeq ($(CONFIG_LP_SCANBUILD_ENABLE),y)
252  ifneq ($(CONFIG_LP_SCANBUILD_REPORT_LOCATION),)
253  CONFIG_LP_SCANBUILD_REPORT_LOCATION:=-o $(CONFIG_LP_SCANBUILD_REPORT_LOCATION)
254  endif
255  real-all:
256  	echo '#!/bin/sh' > .ccwrap
257  	echo 'CC="$(CC)"' >> .ccwrap
258  	echo 'if [ "$$1" = "--hostcc" ]; then shift; CC="$(HOSTCC)"; fi' >> .ccwrap
259  	echo 'if [ "$$1" = "--hostcxx" ]; then shift; CC="$(HOSTCXX)"; fi' >> .ccwrap
260  	echo 'eval $$CC $$*' >> .ccwrap
261  	chmod +x .ccwrap
262  	scan-build $(CONFIG_LP_SCANBUILD_REPORT_LOCATION) -analyze-headers --use-cc=$(top)/.ccwrap --use-c++=$(top)/.ccwrap $(MAKE) INNER_SCANBUILD=y
263  else
264  real-all: real-target
265  endif
266  
267  # must come rather early
268  .SECONDEXPANSION:
269  
270  $(KCONFIG_AUTOHEADER): $(KCONFIG_CONFIG)
271  	$(MAKE) CONFIG_=CONFIG_LP_ olddefconfig
272  	$(MAKE) CONFIG_=CONFIG_LP_ syncconfig
273  
274  # Add a new class of source/object files to the build system
275  add-class= \
276  	$(eval $(1)-srcs:=) \
277  	$(eval $(1)-objs:=) \
278  	$(eval classes+=$(1))
279  
280  # Special classes are managed types with special behaviour
281  # On parse time, for each entry in variable $(1)-y
282  # a handler $(1)-handler is executed with the arguments:
283  # * $(1): directory the parser is in
284  # * $(2): current entry
285  add-special-class= \
286  	$(eval $(1):=) \
287  	$(eval special-classes+=$(1))
288  
289  # Clean -y variables, include Makefile.mk
290  # Add paths to files in X-y to X-srcs
291  # Add subdirs-y to subdirs
292  includemakefiles= \
293  	$(foreach class,classes subdirs $(classes) $(special-classes), $(eval $(class)-y:=)) \
294  	$(eval -include $(1)) \
295  	$(foreach class,$(classes-y), $(call add-class,$(class))) \
296  	$(foreach special,$(special-classes), \
297  		$(foreach item,$($(special)-y), $(call $(special)-handler,$(dir $(1)),$(item)))) \
298  	$(foreach class,$(classes), \
299  		$(eval $(class)-srcs+= \
300  			$$(subst $(absobj)/,$(obj)/, \
301  			$$(subst $(top)/,, \
302  			$$(abspath $$(subst $(dir $(1))/,/,$$(addprefix $(dir $(1)),$$($(class)-y)))))))) \
303  	$(eval subdirs+=$$(subst $(CURDIR)/,,$$(wildcard $$(abspath $$(addprefix $(dir $(1)),$$(subdirs-y))))))
304  
305  
306  # For each path in $(subdirs) call includemakefiles
307  # Repeat until subdirs is empty
308  evaluate_subdirs= \
309  	$(eval cursubdirs:=$(subdirs)) \
310  	$(eval subdirs:=) \
311  	$(foreach dir,$(cursubdirs), \
312  		$(eval $(call includemakefiles,$(dir)/Makefile.mk))) \
313  	$(if $(subdirs),$(eval $(call evaluate_subdirs)))
314  
315  # collect all object files eligible for building or run unit-tests
316  ifneq ($(UNIT_TEST),1)
317  subdirs:=$(TOPLEVEL)
318  $(eval $(call evaluate_subdirs))
319  else
320  include $(TOPLEVEL)/tests/Makefile.mk
321  endif
322  
323  # Converts one or more source file paths to the corresponding build/ paths.
324  # $1 lib name
325  # $2 file path (list)
326  src-to-obj=\
327  	$(addsuffix .$(1).o,\
328  	$(basename \
329  	$(addprefix $(obj)/,\
330  	$(subst $(coreboottop)/,coreboot/,$(2)))))
331  $(foreach class,$(classes),$(eval $(class)-objs+=$(call src-to-obj,$(class),$($(class)-srcs))))
332  
333  allsrcs:=$(foreach var, $(addsuffix -srcs,$(classes)), $($(var)))
334  allobjs:=$(foreach var, $(addsuffix -objs,$(classes)), $($(var)))
335  alldirs:=$(sort $(abspath $(dir $(allobjs))))
336  
337  # macro to define template macros that are used by use_template macro
338  define create_cc_template
339  # $1 obj class
340  # $2 source suffix (c, S)
341  # $3 additional compiler flags
342  # $4 additional dependencies
343  ifn$(EMPTY)def $(1)-objs_$(2)_template
344  de$(EMPTY)fine $(1)-objs_$(2)_template
345  $$(call src-to-obj,$(1), $$(1).$(2)): $$(1).$(2) $(obj)/libpayload-config.h $(4)
346  	@printf "    CC         $$$$(subst $$$$(obj)/,,$$$$(@))\n"
347  	$(CC) $(3) -MMD $$$$(CFLAGS) $(EXTRA_CFLAGS) -c -o $$$$@ $$$$<
348  en$(EMPTY)def
349  end$(EMPTY)if
350  endef
351  
352  filetypes-of-class=$(subst .,,$(sort $(suffix $($(1)-srcs))))
353  $(foreach class,$(classes), \
354  	$(foreach type,$(call filetypes-of-class,$(class)), \
355  		$(eval $(call create_cc_template,$(class),$(type),$($(class)-$(type)-ccopts),$($(class)-$(type)-deps)))))
356  
357  foreach-src=$(foreach file,$($(1)-srcs),$(eval $(call $(1)-objs_$(subst .,,$(suffix $(file)))_template,$(basename $(file)))))
358  $(eval $(foreach class,$(classes),$(call foreach-src,$(class))))
359  
360  DEPENDENCIES = $($(filter %.o,%(allobjs)):.o=.d)
361  -include $(DEPENDENCIES)
362  
363  printall:
364  	@$(foreach class,$(classes),echo $(class)-objs:=$($(class)-objs); )
365  	@echo alldirs:=$(alldirs)
366  	@echo allsrcs=$(allsrcs)
367  	@echo DEPENDENCIES=$(DEPENDENCIES)
368  	@$(foreach class,$(special-classes),echo $(class):='$($(class))'; )
369  
370  endif
371  
372  $(shell mkdir -p $(KCONFIG_SPLITCONFIG) $(obj) $(objk)/lxdialog $(additional-dirs) $(alldirs))
373  
374  cscope:
375  	cscope -bR
376  
377  doxy: doxygen
378  doxygen:
379  	$(DOXYGEN) Doxyfile
380  
381  doxyclean: doxygen-clean
382  doxygen-clean:
383  	rm -rf $(DOXYGEN_OUTPUT_DIR)
384  
385  clean-for-update: doxygen-clean clean-for-update-target
386  	rm -f $(allobjs) $(xcompile)
387  	rm -f $(DEPENDENCIES)
388  	rmdir -p $(alldirs) 2>/dev/null >/dev/null || true
389  
390  clean: clean-for-update clean-target
391  	rm -f .ccwrap junit_config junit_config.old
392  	rm -rf $(obj)
393  
394  clean-cscope:
395  	rm -f cscope.out
396  
397  distclean: clean-cscope clean
398  	rm -f .config .config.old ..config.tmp .kconfig.d .tmpconfig* .ccwrap .xcompile junit.xml
399  
400  .PHONY: $(PHONY) clean clean-cscope cscope distclean doxygen doxy