The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

FreeBSD/Linux Kernel Cross Reference
sys/Rules.make

Version: -  FREEBSD  -  FREEBSD11  -  FREEBSD10  -  FREEBSD9  -  FREEBSD92  -  FREEBSD91  -  FREEBSD90  -  FREEBSD8  -  FREEBSD82  -  FREEBSD81  -  FREEBSD80  -  FREEBSD7  -  FREEBSD74  -  FREEBSD73  -  FREEBSD72  -  FREEBSD71  -  FREEBSD70  -  FREEBSD6  -  FREEBSD64  -  FREEBSD63  -  FREEBSD62  -  FREEBSD61  -  FREEBSD60  -  FREEBSD5  -  FREEBSD55  -  FREEBSD54  -  FREEBSD53  -  FREEBSD52  -  FREEBSD51  -  FREEBSD50  -  FREEBSD4  -  FREEBSD3  -  FREEBSD22  -  linux-2.6  -  linux-2.4.22  -  MK83  -  MK84  -  PLAN9  -  DFBSD  -  NETBSD  -  NETBSD5  -  NETBSD4  -  NETBSD3  -  NETBSD20  -  OPENBSD  -  xnu-517  -  xnu-792  -  xnu-792.6.70  -  xnu-1228  -  xnu-1456.1.26  -  xnu-1699.24.8  -  xnu-2050.18.24  -  OPENSOLARIS  -  minix-3-1-1 
SearchContext: -  none  -  3  -  10 

    1 #
    2 # This file contains rules which are shared between multiple Makefiles.
    3 #
    4 
    5 #
    6 # False targets.
    7 #
    8 .PHONY: dummy
    9 
   10 #
   11 # Special variables which should not be exported
   12 #
   13 unexport EXTRA_AFLAGS
   14 unexport EXTRA_CFLAGS
   15 unexport EXTRA_LDFLAGS
   16 unexport EXTRA_ARFLAGS
   17 unexport SUBDIRS
   18 unexport SUB_DIRS
   19 unexport ALL_SUB_DIRS
   20 unexport MOD_SUB_DIRS
   21 unexport O_TARGET
   22 unexport ALL_MOBJS
   23 
   24 unexport obj-y
   25 unexport obj-m
   26 unexport obj-n
   27 unexport obj-
   28 unexport export-objs
   29 unexport subdir-y
   30 unexport subdir-m
   31 unexport subdir-n
   32 unexport subdir-
   33 
   34 comma   := ,
   35 EXTRA_CFLAGS_nostdinc := $(EXTRA_CFLAGS) $(kbuild_2_4_nostdinc)
   36 
   37 #
   38 # Get things started.
   39 #
   40 first_rule: sub_dirs
   41         $(MAKE) all_targets
   42 
   43 both-m          := $(filter $(mod-subdirs), $(subdir-y))
   44 SUB_DIRS        := $(subdir-y)
   45 MOD_SUB_DIRS    := $(sort $(subdir-m) $(both-m))
   46 ALL_SUB_DIRS    := $(sort $(subdir-y) $(subdir-m) $(subdir-n) $(subdir-))
   47 
   48 
   49 #
   50 # Common rules
   51 #
   52 
   53 %.s: %.c
   54         $(CC) $(CFLAGS) $(EXTRA_CFLAGS_nostdinc) -DKBUILD_BASENAME=$(subst $(comma),_,$(subst -,_,$(*F))) $(CFLAGS_$@) -S $< -o $@
   55 
   56 %.i: %.c
   57         $(CPP) $(CFLAGS) $(EXTRA_CFLAGS_nostdinc) -DKBUILD_BASENAME=$(subst $(comma),_,$(subst -,_,$(*F))) $(CFLAGS_$@) $< > $@
   58 
   59 %.o: %.c
   60         $(CC) $(CFLAGS) $(EXTRA_CFLAGS_nostdinc) -DKBUILD_BASENAME=$(subst $(comma),_,$(subst -,_,$(*F))) $(CFLAGS_$@) -c -o $@ $<
   61         @ ( \
   62             echo 'ifeq ($(strip $(subst $(comma),:,$(CFLAGS) $(EXTRA_CFLAGS_nostdinc) $(CFLAGS_$@))),$$(strip $$(subst $$(comma),:,$$(CFLAGS) $$(EXTRA_CFLAGS_nostdinc) $$(CFLAGS_$@))))' ; \
   63             echo 'FILES_FLAGS_UP_TO_DATE += $@' ; \
   64             echo 'endif' \
   65         ) > $(dir $@)/.$(notdir $@).flags
   66 
   67 %.o: %.s
   68         $(AS) $(AFLAGS) $(EXTRA_CFLAGS) -o $@ $<
   69 
   70 # Old makefiles define their own rules for compiling .S files,
   71 # but these standard rules are available for any Makefile that
   72 # wants to use them.  Our plan is to incrementally convert all
   73 # the Makefiles to these standard rules.  -- rmk, mec
   74 ifdef USE_STANDARD_AS_RULE
   75 
   76 %.s: %.S
   77         $(CPP) $(AFLAGS) $(EXTRA_AFLAGS) $(AFLAGS_$@) $< > $@
   78 
   79 %.o: %.S
   80         $(CC) $(AFLAGS) $(EXTRA_AFLAGS) $(AFLAGS_$@) -c -o $@ $<
   81 
   82 endif
   83 
   84 %.lst: %.c
   85         $(CC) $(CFLAGS) $(EXTRA_CFLAGS_nostdinc) $(CFLAGS_$@) -g -c -o $*.o $<
   86         $(TOPDIR)/scripts/makelst $* $(TOPDIR) $(OBJDUMP)
   87 #
   88 #
   89 #
   90 all_targets: $(O_TARGET) $(L_TARGET)
   91 
   92 #
   93 # Rule to compile a set of .o files into one .o file
   94 #
   95 ifdef O_TARGET
   96 $(O_TARGET): $(obj-y)
   97         rm -f $@
   98     ifneq "$(strip $(obj-y))" ""
   99         $(LD) $(EXTRA_LDFLAGS) -r -o $@ $(filter $(obj-y), $^)
  100     else
  101         $(AR) rcs $@
  102     endif
  103         @ ( \
  104             echo 'ifeq ($(strip $(subst $(comma),:,$(EXTRA_LDFLAGS) $(obj-y))),$$(strip $$(subst $$(comma),:,$$(EXTRA_LDFLAGS) $$(obj-y))))' ; \
  105             echo 'FILES_FLAGS_UP_TO_DATE += $@' ; \
  106             echo 'endif' \
  107         ) > $(dir $@)/.$(notdir $@).flags
  108 endif # O_TARGET
  109 
  110 #
  111 # Rule to compile a set of .o files into one .a file
  112 #
  113 ifdef L_TARGET
  114 $(L_TARGET): $(obj-y)
  115         rm -f $@
  116         $(AR) $(EXTRA_ARFLAGS) rcs $@ $(obj-y)
  117         @ ( \
  118             echo 'ifeq ($(strip $(subst $(comma),:,$(EXTRA_ARFLAGS) $(obj-y))),$$(strip $$(subst $$(comma),:,$$(EXTRA_ARFLAGS) $$(obj-y))))' ; \
  119             echo 'FILES_FLAGS_UP_TO_DATE += $@' ; \
  120             echo 'endif' \
  121         ) > $(dir $@)/.$(notdir $@).flags
  122 endif
  123 
  124 
  125 #
  126 # This make dependencies quickly
  127 #
  128 fastdep: dummy
  129         $(TOPDIR)/scripts/mkdep $(CFLAGS) $(EXTRA_CFLAGS_nostdinc) -- $(wildcard *.[chS]) > .depend
  130 ifdef ALL_SUB_DIRS
  131         $(MAKE) $(patsubst %,_sfdep_%,$(ALL_SUB_DIRS)) _FASTDEP_ALL_SUB_DIRS="$(ALL_SUB_DIRS)"
  132 endif
  133 
  134 ifdef _FASTDEP_ALL_SUB_DIRS
  135 $(patsubst %,_sfdep_%,$(_FASTDEP_ALL_SUB_DIRS)):
  136         $(MAKE) -C $(patsubst _sfdep_%,%,$@) fastdep
  137 endif
  138 
  139         
  140 #
  141 # A rule to make subdirectories
  142 #
  143 subdir-list = $(sort $(patsubst %,_subdir_%,$(SUB_DIRS)))
  144 sub_dirs: dummy $(subdir-list)
  145 
  146 ifdef SUB_DIRS
  147 $(subdir-list) : dummy
  148         $(MAKE) -C $(patsubst _subdir_%,%,$@)
  149 endif
  150 
  151 #
  152 # A rule to make modules
  153 #
  154 ALL_MOBJS = $(filter-out $(obj-y), $(obj-m))
  155 ifneq "$(strip $(ALL_MOBJS))" ""
  156 MOD_DESTDIR := $(shell $(CONFIG_SHELL) $(TOPDIR)/scripts/pathdown.sh)
  157 endif
  158 
  159 unexport MOD_DIRS
  160 MOD_DIRS := $(MOD_SUB_DIRS) $(MOD_IN_SUB_DIRS)
  161 ifneq "$(strip $(MOD_DIRS))" ""
  162 .PHONY: $(patsubst %,_modsubdir_%,$(MOD_DIRS))
  163 $(patsubst %,_modsubdir_%,$(MOD_DIRS)) : dummy
  164         $(MAKE) -C $(patsubst _modsubdir_%,%,$@) modules
  165 
  166 .PHONY: $(patsubst %,_modinst_%,$(MOD_DIRS))
  167 $(patsubst %,_modinst_%,$(MOD_DIRS)) : dummy
  168         $(MAKE) -C $(patsubst _modinst_%,%,$@) modules_install
  169 endif
  170 
  171 .PHONY: modules
  172 modules: $(ALL_MOBJS) dummy \
  173          $(patsubst %,_modsubdir_%,$(MOD_DIRS))
  174 
  175 .PHONY: _modinst__
  176 _modinst__: dummy
  177 ifneq "$(strip $(ALL_MOBJS))" ""
  178         mkdir -p $(MODLIB)/kernel/$(MOD_DESTDIR)
  179         cp $(sort $(ALL_MOBJS)) $(MODLIB)/kernel/$(MOD_DESTDIR)
  180 endif
  181 
  182 .PHONY: modules_install
  183 modules_install: _modinst__ \
  184          $(patsubst %,_modinst_%,$(MOD_DIRS))
  185 
  186 #
  187 # A rule to do nothing
  188 #
  189 dummy:
  190 
  191 #
  192 # This is useful for testing
  193 #
  194 script:
  195         $(SCRIPT)
  196 
  197 #
  198 # This sets version suffixes on exported symbols
  199 # Separate the object into "normal" objects and "exporting" objects
  200 # Exporting objects are: all objects that define symbol tables
  201 #
  202 ifdef CONFIG_MODULES
  203 
  204 multi-used      := $(filter $(list-multi), $(obj-y) $(obj-m))
  205 multi-objs      := $(foreach m, $(multi-used), $($(basename $(m))-objs))
  206 active-objs     := $(sort $(multi-objs) $(obj-y) $(obj-m))
  207 
  208 ifdef CONFIG_MODVERSIONS
  209 ifneq "$(strip $(export-objs))" ""
  210 
  211 MODINCL = $(TOPDIR)/include/linux/modules
  212 
  213 # The -w option (enable warnings) for genksyms will return here in 2.1
  214 # So where has it gone?
  215 #
  216 # Added the SMP separator to stop module accidents between uniprocessor
  217 # and SMP Intel boxes - AC - from bits by Michael Chastain
  218 #
  219 
  220 ifdef CONFIG_SMP
  221         genksyms_smp_prefix := -p smp_
  222 else
  223         genksyms_smp_prefix := 
  224 endif
  225 
  226 $(MODINCL)/%.ver: %.c
  227         @if [ ! -r $(MODINCL)/$*.stamp -o $(MODINCL)/$*.stamp -ot $< ]; then \
  228                 echo '$(CC) $(CFLAGS) $(EXTRA_CFLAGS_nostdinc) -E -D__GENKSYMS__ $<'; \
  229                 echo '| $(GENKSYMS) $(genksyms_smp_prefix) -k $(VERSION).$(PATCHLEVEL).$(SUBLEVEL) > $@.tmp'; \
  230                 $(CC) $(CFLAGS) $(EXTRA_CFLAGS_nostdinc) -E -D__GENKSYMS__ $< \
  231                 | $(GENKSYMS) $(genksyms_smp_prefix) -k $(VERSION).$(PATCHLEVEL).$(SUBLEVEL) > $@.tmp; \
  232                 if [ -r $@ ] && cmp -s $@ $@.tmp; then echo $@ is unchanged; rm -f $@.tmp; \
  233                 else echo mv $@.tmp $@; mv -f $@.tmp $@; fi; \
  234         fi; touch $(MODINCL)/$*.stamp
  235         
  236 $(addprefix $(MODINCL)/,$(export-objs:.o=.ver)): $(TOPDIR)/include/linux/autoconf.h
  237 
  238 # updates .ver files but not modversions.h
  239 fastdep: $(addprefix $(MODINCL)/,$(export-objs:.o=.ver))
  240 
  241 # updates .ver files and modversions.h like before (is this needed?)
  242 dep: fastdep update-modverfile
  243 
  244 endif # export-objs 
  245 
  246 # update modversions.h, but only if it would change
  247 update-modverfile:
  248         @(echo "#ifndef _LINUX_MODVERSIONS_H";\
  249           echo "#define _LINUX_MODVERSIONS_H"; \
  250           echo "#include <linux/modsetver.h>"; \
  251           cd $(TOPDIR)/include/linux/modules; \
  252           for f in *.ver; do \
  253             if [ -f $$f ]; then echo "#include <linux/modules/$${f}>"; fi; \
  254           done; \
  255           echo "#endif"; \
  256         ) > $(TOPDIR)/include/linux/modversions.h.tmp
  257         @if [ -r $(TOPDIR)/include/linux/modversions.h ] && cmp -s $(TOPDIR)/include/linux/modversions.h $(TOPDIR)/include/linux/modversions.h.tmp; then \
  258                 echo $(TOPDIR)/include/linux/modversions.h was not updated; \
  259                 rm -f $(TOPDIR)/include/linux/modversions.h.tmp; \
  260         else \
  261                 echo $(TOPDIR)/include/linux/modversions.h was updated; \
  262                 mv -f $(TOPDIR)/include/linux/modversions.h.tmp $(TOPDIR)/include/linux/modversions.h; \
  263         fi
  264 
  265 $(active-objs): $(TOPDIR)/include/linux/modversions.h
  266 
  267 else
  268 
  269 $(TOPDIR)/include/linux/modversions.h:
  270         @echo "#include <linux/modsetver.h>" > $@
  271 
  272 endif # CONFIG_MODVERSIONS
  273 
  274 ifneq "$(strip $(export-objs))" ""
  275 $(export-objs): $(export-objs:.o=.c) $(TOPDIR)/include/linux/modversions.h
  276         $(CC) $(CFLAGS) $(EXTRA_CFLAGS_nostdinc) -DKBUILD_BASENAME=$(subst $(comma),_,$(subst -,_,$(*F))) $(CFLAGS_$@) -DEXPORT_SYMTAB -c $(@:.o=.c)
  277         @ ( \
  278             echo 'ifeq ($(strip $(subst $(comma),:,$(CFLAGS) $(EXTRA_CFLAGS_nostdinc) $(CFLAGS_$@) -DEXPORT_SYMTAB)),$$(strip $$(subst $$(comma),:,$$(CFLAGS) $$(EXTRA_CFLAGS_nostdinc) $$(CFLAGS_$@) -DEXPORT_SYMTAB)))' ; \
  279             echo 'FILES_FLAGS_UP_TO_DATE += $@' ; \
  280             echo 'endif' \
  281         ) > $(dir $@)/.$(notdir $@).flags
  282 endif
  283 
  284 endif # CONFIG_MODULES
  285 
  286 
  287 #
  288 # include dependency files if they exist
  289 #
  290 ifneq ($(wildcard .depend),)
  291 include .depend
  292 endif
  293 
  294 ifneq ($(wildcard $(TOPDIR)/.hdepend),)
  295 include $(TOPDIR)/.hdepend
  296 endif
  297 
  298 #
  299 # Find files whose flags have changed and force recompilation.
  300 # For safety, this works in the converse direction:
  301 #   every file is forced, except those whose flags are positively up-to-date.
  302 #
  303 FILES_FLAGS_UP_TO_DATE :=
  304 
  305 # For use in expunging commas from flags, which mung our checking.
  306 comma = ,
  307 
  308 FILES_FLAGS_EXIST := $(wildcard .*.flags)
  309 ifneq ($(FILES_FLAGS_EXIST),)
  310 include $(FILES_FLAGS_EXIST)
  311 endif
  312 
  313 FILES_FLAGS_CHANGED := $(strip \
  314     $(filter-out $(FILES_FLAGS_UP_TO_DATE), \
  315         $(O_TARGET) $(L_TARGET) $(active-objs) \
  316         ))
  317 
  318 # A kludge: .S files don't get flag dependencies (yet),
  319 #   because that will involve changing a lot of Makefiles.  Also
  320 #   suppress object files explicitly listed in $(IGNORE_FLAGS_OBJS).
  321 #   This allows handling of assembly files that get translated into
  322 #   multiple object files (see arch/ia64/lib/idiv.S, for example).
  323 FILES_FLAGS_CHANGED := $(strip \
  324     $(filter-out $(patsubst %.S, %.o, $(wildcard *.S) $(IGNORE_FLAGS_OBJS)), \
  325     $(FILES_FLAGS_CHANGED)))
  326 
  327 ifneq ($(FILES_FLAGS_CHANGED),)
  328 $(FILES_FLAGS_CHANGED): dummy
  329 endif

Cache object: 9a22e063f9b27d71e10fc4fc7e8238cf


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]


This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.