rules.mak

   1
   2 # Don't use implicit rules or variables
   3 # we have explicit rules for everything
   4 MAKEFLAGS += -rR
   5
   6 # Files with this suffixes are final, don't try to generate them
   7 # using implicit rules
   8 %.d:
   9 %.h:
  10 %.c:
  11 %.m:
  12 %.mak:
  13
  14 # Flags for dependency generation
  15 QEMU_DGFLAGS += -MMD -MP -MT $@ -MF $(*D)/$(*F).d
  16
  17 # Same as -I$(SRC_PATH) -I., but for the nested source/object directories
  18 QEMU_INCLUDES += -I$(<D) -I$(@D)
  19
  20 %.o: %.c
  21         $(call quiet-command,$(CC) $(QEMU_INCLUDES) $(QEMU_CFLAGS) $(QEMU_DGFLAGS) $(CFLAGS) -c -o $@ $<,"  CC    $(TARGET_DIR)$@")
  22 %.o: %.rc
  23         $(call quiet-command,$(WINDRES) -I. -o $@ $<,"  RC    $(TARGET_DIR)$@")
  24
  25 Makefile: $(version-obj-y)
  26
  27 ifeq ($(LIBTOOL),)
  28 LIBTOOL = /bin/false
  29 LINK = $(call quiet-command,$(CC) $(QEMU_CFLAGS) $(CFLAGS) $(LDFLAGS) -o $@ \
  30        $(sort $(filter %.o, $1)) $(filter-out %.o, $1) $(version-obj-y) \
  31        $(LIBS),"  LINK  $(TARGET_DIR)$@")
  32 else
  33 Makefile: $(version-lobj-y)
  34 LIBTOOL += $(if $(V),,--quiet)
  35 %.lo: %.c
  36         $(call quiet-command,$(LIBTOOL) --mode=compile --tag=CC $(CC) $(QEMU_INCLUDES) $(QEMU_CFLAGS) $(QEMU_DGFLAGS) $(CFLAGS) -c -o $@ $<,"  lt CC $@")
  37 %.lo: %.rc
  38         $(call quiet-command,$(LIBTOOL) --mode=compile --tag=RC $(WINDRES) -I. -o $@ $<,"lt RC   $(TARGET_DIR)$@")
  39 %.lo: %.dtrace
  40         $(call quiet-command,$(LIBTOOL) --mode=compile --tag=CC dtrace -o $@ -G -s $<, " lt GEN $(TARGET_DIR)$@")
  41
  42 LINK = $(call quiet-command,\
  43        $(if $(filter %.lo %.la,$^),$(LIBTOOL) --mode=link --tag=CC \
  44        )$(CC) $(QEMU_CFLAGS) $(CFLAGS) $(LDFLAGS) -o $@ \
  45        $(sort $(filter %.o, $1)) $(filter-out %.o, $1) \
  46        $(if $(filter %.lo %.la,$^),$(version-lobj-y),$(version-obj-y)) \
  47        $(if $(filter %.lo %.la,$^),$(LIBTOOLFLAGS)) \
  48        $(LIBS),$(if $(filter %.lo %.la,$^),"lt LINK ", "  LINK  ")"$(TARGET_DIR)$@")
  49 endif
  50
  51 %.asm: %.S
  52         $(call quiet-command,$(CPP) $(QEMU_INCLUDES) $(QEMU_CFLAGS) $(QEMU_DGFLAGS) $(CFLAGS) -o $@ $<,"  CPP   $(TARGET_DIR)$@")
  53
  54 %.o: %.asm
  55         $(call quiet-command,$(AS) $(ASFLAGS) -o $@ $<,"  AS    $(TARGET_DIR)$@")
  56
  57 %.o: %.m
  58         $(call quiet-command,$(OBJCC) $(QEMU_INCLUDES) $(QEMU_CFLAGS) $(QEMU_DGFLAGS) $(CFLAGS) -c -o $@ $<,"  OBJC  $(TARGET_DIR)$@")
  59
  60 %.o: %.dtrace
  61         $(call quiet-command,dtrace -o $@ -G -s $<, "  GEN   $(TARGET_DIR)$@")
  62
  63 %$(EXESUF): %.o
  64         $(call LINK,$^)
  65
  66 %.a:
  67         $(call quiet-command,rm -f $@ && $(AR) rcs $@ $^,"  AR    $(TARGET_DIR)$@")
  68
  69 quiet-command = $(if $(V),$1,$(if $(2),@echo $2 && $1, @$1))
  70
  71 # cc-option
  72 # Usage: CFLAGS+=$(call cc-option, -falign-functions=0, -malign-functions=0)
  73
  74 cc-option = $(if $(shell $(CC) $1 $2 -S -o /dev/null -xc /dev/null \
  75               >/dev/null 2>&1 && echo OK), $2, $3)
  76
  77 VPATH_SUFFIXES = %.c %.h %.S %.m %.mak %.texi %.sh
  78 set-vpath = $(if $1,$(foreach PATTERN,$(VPATH_SUFFIXES),$(eval vpath $(PATTERN) $1)))
  79
  80 # find-in-path
  81 # Usage: $(call find-in-path, prog)
  82 # Looks in the PATH if the argument contains no slash, else only considers one
  83 # specific directory.  Returns an # empty string if the program doesn't exist
  84 # there.
  85 find-in-path = $(if $(find-string /, $1), \
  86         $(wildcard $1), \
  87         $(wildcard $(patsubst %, %/$1, $(subst :, ,$(PATH)))))
  88
  89 # Generate files with tracetool
  90 TRACETOOL=$(PYTHON) $(SRC_PATH)/scripts/tracetool.py
  91
  92 # Generate timestamp files for .h include files
  93
  94 config-%.h: config-%.h-timestamp
  95         @cmp $< $@ >/dev/null 2>&1 || cp $< $@
  96
  97 config-%.h-timestamp: config-%.mak
  98         $(call quiet-command, sh $(SRC_PATH)/scripts/create_config < $< > $@, "  GEN   $(TARGET_DIR)config-$*.h")
  99
 100 .PHONY: clean-timestamp
 101 clean-timestamp:
 102         rm -f *.timestamp
 103 clean: clean-timestamp
 104
 105 # will delete the target of a rule if commands exit with a nonzero exit status
 106 .DELETE_ON_ERROR:
 107
 108 # magic to descend into other directories
 109
 110 obj := .
 111 old-nested-dirs :=
 112
 113 define push-var
 114 $(eval save-$2-$1 = $(value $1))
 115 $(eval $1 :=)
 116 endef
 117
 118 define pop-var
 119 $(eval subdir-$2-$1 := $(if $(filter $2,$(save-$2-$1)),$(addprefix $2,$($1))))
 120 $(eval $1 = $(value save-$2-$1) $$(subdir-$2-$1))
 121 $(eval save-$2-$1 :=)
 122 endef
 123
 124 define unnest-dir
 125 $(foreach var,$(nested-vars),$(call push-var,$(var),$1/))
 126 $(eval obj := $(obj)/$1)
 127 $(eval include $(SRC_PATH)/$1/Makefile.objs)
 128 $(eval obj := $(patsubst %/$1,%,$(obj)))
 129 $(foreach var,$(nested-vars),$(call pop-var,$(var),$1/))
 130 endef
 131
 132 define unnest-vars-1
 133 $(eval nested-dirs := $(filter-out \
 134     $(old-nested-dirs), \
 135     $(sort $(foreach var,$(nested-vars), $(filter %/, $($(var)))))))
 136 $(if $(nested-dirs),
 137   $(foreach dir,$(nested-dirs),$(call unnest-dir,$(patsubst %/,%,$(dir))))
 138   $(eval old-nested-dirs := $(old-nested-dirs) $(nested-dirs))
 139   $(call unnest-vars-1))
 140 endef
 141
 142 define unnest-vars
 143 $(call unnest-vars-1)
 144 $(foreach var,$(nested-vars),$(eval $(var) := $(filter-out %/, $($(var)))))
 145 $(shell mkdir -p $(sort $(foreach var,$(nested-vars),$(dir $($(var))))))
 146 $(foreach var,$(nested-vars), $(eval \
 147   -include $(addsuffix *.d, $(sort $(dir $($(var)))))))
 148 endef