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 %.o: %.c
  18         $(call quiet-command,$(CC) $(QEMU_CFLAGS) $(QEMU_INCLUDES) $(QEMU_DGFLAGS) $(CFLAGS) -c -o $@ $<,"  CC    $(TARGET_DIR)$@")
  19
  20 %.o: %.S
  21         $(call quiet-command,$(CC) $(QEMU_CFLAGS) $(QEMU_INCLUDES) $(QEMU_DGFLAGS) $(CFLAGS) -c -o $@ $<,"  AS    $(TARGET_DIR)$@")
  22
  23 %.o: %.m
  24         $(call quiet-command,$(CC) $(QEMU_CFLAGS) $(QEMU_INCLUDES) $(QEMU_DGFLAGS) $(CFLAGS) -c -o $@ $<,"  OBJC  $(TARGET_DIR)$@")
  25
  26 LINK = $(call quiet-command,$(CC) $(QEMU_CFLAGS) $(CFLAGS) $(LDFLAGS) -o $@ $(1) $(LIBS),"  LINK  $(TARGET_DIR)$@")
  27
  28 %$(EXESUF): %.o
  29         $(call LINK,$^)
  30
  31 %.a:
  32         $(call quiet-command,rm -f $@ && $(AR) rcs $@ $^,"  AR    $(TARGET_DIR)$@")
  33
  34 quiet-command = $(if $(V),$1,$(if $(2),@echo $2 && $1, @$1))
  35
  36 # cc-option
  37 # Usage: CFLAGS+=$(call cc-option, -falign-functions=0, -malign-functions=0)
  38
  39 cc-option = $(if $(shell $(CC) $1 $2 -S -o /dev/null -xc /dev/null \
  40               >/dev/null 2>&1 && echo OK), $2, $3)
  41
  42 VPATH_SUFFIXES = %.c %.h %.S %.m %.mak %.texi
  43 set-vpath = $(if $1,$(foreach PATTERN,$(VPATH_SUFFIXES),$(eval vpath $(PATTERN) $1)))
  44
  45 # find-in-path
  46 # Usage: $(call find-in-path, prog)
  47 # Looks in the PATH if the argument contains no slash, else only considers one
  48 # specific directory.  Returns an # empty string if the program doesn't exist
  49 # there.
  50 find-in-path = $(if $(find-string /, $1), \
  51         $(wildcard $1), \
  52         $(wildcard $(patsubst %, %/$1, $(subst :, ,$(PATH)))))
  53
  54 # Generate timestamp files for .h include files
  55
  56 %.h: %.h-timestamp
  57         @test -f $@ || cp $< $@
  58
  59 %.h-timestamp: %.mak
  60         $(call quiet-command, sh $(SRC_PATH)/scripts/create_config < $< > $@, "  GEN   $*.h")
  61         @cmp $@ $*.h >/dev/null 2>&1 || cp $@ $*.h
  62
  63 # will delete the target of a rule if commands exit with a nonzero exit status
  64 .DELETE_ON_ERROR: