LXR qemu/rules.mak

   1
   2# Don't use implicit rules or variables
   3# we have explicit rules for everything
   4MAKEFLAGS += -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%.cpp:
  12%.m:
  13%.mak:
  14
  15# Flags for C++ compilation
  16QEMU_CXXFLAGS = -D__STDC_LIMIT_MACROS $(filter-out -Wstrict-prototypes -Wmissing-prototypes -Wnested-externs -Wold-style-declaration -Wold-style-definition -Wredundant-decls, $(QEMU_CFLAGS))
  17
  18# Flags for dependency generation
  19QEMU_DGFLAGS += -MMD -MP -MT $@ -MF $(*D)/$(*F).d
  20
  21# Same as -I$(SRC_PATH) -I., but for the nested source/object directories
  22QEMU_INCLUDES += -I$(<D) -I$(@D)
  23
  24%.o: %.c
  25        $(call quiet-command,$(CC) $(QEMU_INCLUDES) $(QEMU_CFLAGS) $(QEMU_DGFLAGS) $(CFLAGS) -c -o $@ $<,"  CC    $(TARGET_DIR)$@")
  26%.o: %.rc
  27        $(call quiet-command,$(WINDRES) -I. -o $@ $<,"  RC    $(TARGET_DIR)$@")
  28
  29ifeq ($(LIBTOOL),)
  30LINK = $(call quiet-command,$(CC) $(QEMU_CFLAGS) $(CFLAGS) $(LDFLAGS) -o $@ \
  31       $(sort $(filter %.o, $1)) $(filter-out %.o, $1) $(version-obj-y) \
  32       $(LIBS),"  LINK  $(TARGET_DIR)$@")
  33else
  34LIBTOOL += $(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
  42LINK = $(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  ")"$(TARGET_DIR)$@")
  49endif
  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: %.cpp
  58        $(call quiet-command,$(CXX) $(QEMU_INCLUDES) $(QEMU_CXXFLAGS) $(QEMU_DGFLAGS) $(CFLAGS) -c -o $@ $<,"  CXX   $(TARGET_DIR)$@")
  59
  60%.o: %.m
  61        $(call quiet-command,$(OBJCC) $(QEMU_INCLUDES) $(QEMU_CFLAGS) $(QEMU_DGFLAGS) $(CFLAGS) -c -o $@ $<,"  OBJC  $(TARGET_DIR)$@")
  62
  63%.o: %.dtrace
  64        $(call quiet-command,dtrace -o $@ -G -s $<, "  GEN   $(TARGET_DIR)$@")
  65
  66%$(EXESUF): %.o
  67        $(call LINK,$^)
  68
  69%.a:
  70        $(call quiet-command,rm -f $@ && $(AR) rcs $@ $^,"  AR    $(TARGET_DIR)$@")
  71
  72quiet-command = $(if $(V),$1,$(if $(2),@echo $2 && $1, @$1))
  73
  74# cc-option
  75# Usage: CFLAGS+=$(call cc-option, -falign-functions=0, -malign-functions=0)
  76
  77cc-option = $(if $(shell $(CC) $1 $2 -S -o /dev/null -xc /dev/null \
  78              >/dev/null 2>&1 && echo OK), $2, $3)
  79
  80VPATH_SUFFIXES = %.c %.h %.S %.cpp %.m %.mak %.texi %.sh %.rc
  81set-vpath = $(if $1,$(foreach PATTERN,$(VPATH_SUFFIXES),$(eval vpath $(PATTERN) $1)))
  82
  83# find-in-path
  84# Usage: $(call find-in-path, prog)
  85# Looks in the PATH if the argument contains no slash, else only considers one
  86# specific directory.  Returns an # empty string if the program doesn't exist
  87# there.
  88find-in-path = $(if $(find-string /, $1), \
  89        $(wildcard $1), \
  90        $(wildcard $(patsubst %, %/$1, $(subst :, ,$(PATH)))))
  91
  92# Logical functions (for operating on y/n values like CONFIG_FOO vars)
  93# Inputs to these must be either "y" (true) or "n" or "" (both false)
  94# Output is always either "y" or "n".
  95# Usage: $(call land,$(CONFIG_FOO),$(CONFIG_BAR))
  96# Logical NOT
  97lnot = $(if $(subst n,,$1),n,y)
  98# Logical AND
  99land = $(if $(findstring yy,$1$2),y,n)
 100# Logical OR
 101lor = $(if $(findstring y,$1$2),y,n)
 102# Logical XOR (note that this is the inverse of leqv)
 103lxor = $(if $(filter $(call lnot,$1),$(call lnot,$2)),n,y)
 104# Logical equivalence (note that leqv "","n" is true)
 105leqv = $(if $(filter $(call lnot,$1),$(call lnot,$2)),y,n)
 106# Logical if: like make's $(if) but with an leqv-like test
 107lif = $(if $(subst n,,$1),$2,$3)
 108
 109# String testing functions: inputs to these can be any string;
 110# the output is always either "y" or "n". Leading and trailing whitespace
 111# is ignored when comparing strings.
 112# String equality
 113eq = $(if $(subst $2,,$1)$(subst $1,,$2),n,y)
 114# String inequality
 115ne = $(if $(subst $2,,$1)$(subst $1,,$2),y,n)
 116# Emptiness/non-emptiness tests:
 117isempty = $(if $1,n,y)
 118notempty = $(if $1,y,n)
 119
 120# Generate files with tracetool
 121TRACETOOL=$(PYTHON) $(SRC_PATH)/scripts/tracetool.py
 122
 123# Generate timestamp files for .h include files
 124
 125config-%.h: config-%.h-timestamp
 126        @cmp $< $@ >/dev/null 2>&1 || cp $< $@
 127
 128config-%.h-timestamp: config-%.mak
 129        $(call quiet-command, sh $(SRC_PATH)/scripts/create_config < $< > $@, "  GEN   $(TARGET_DIR)config-$*.h")
 130
 131.PHONY: clean-timestamp
 132clean-timestamp:
 133        rm -f *.timestamp
 134clean: clean-timestamp
 135
 136# will delete the target of a rule if commands exit with a nonzero exit status
 137.DELETE_ON_ERROR:
 138
 139# magic to descend into other directories
 140
 141obj := .
 142old-nested-dirs :=
 143
 144define push-var
 145$(eval save-$2-$1 = $(value $1))
 146$(eval $1 :=)
 147endef
 148
 149define pop-var
 150$(eval subdir-$2-$1 := $(if $(filter $2,$(save-$2-$1)),$(addprefix $2,$($1))))
 151$(eval $1 = $(value save-$2-$1) $$(subdir-$2-$1))
 152$(eval save-$2-$1 :=)
 153endef
 154
 155define unnest-dir
 156$(foreach var,$(nested-vars),$(call push-var,$(var),$1/))
 157$(eval obj := $(obj)/$1)
 158$(eval include $(SRC_PATH)/$1/Makefile.objs)
 159$(eval obj := $(patsubst %/$1,%,$(obj)))
 160$(foreach var,$(nested-vars),$(call pop-var,$(var),$1/))
 161endef
 162
 163define unnest-vars-1
 164$(eval nested-dirs := $(filter-out \
 165    $(old-nested-dirs), \
 166    $(sort $(foreach var,$(nested-vars), $(filter %/, $($(var)))))))
 167$(if $(nested-dirs),
 168  $(foreach dir,$(nested-dirs),$(call unnest-dir,$(patsubst %/,%,$(dir))))
 169  $(eval old-nested-dirs := $(old-nested-dirs) $(nested-dirs))
 170  $(call unnest-vars-1))
 171endef
 172
 173define unnest-vars
 174$(call unnest-vars-1)
 175$(foreach var,$(nested-vars),$(eval $(var) := $(filter-out %/, $($(var)))))
 176$(shell mkdir -p $(sort $(foreach var,$(nested-vars),$(dir $($(var))))))
 177$(foreach var,$(nested-vars), $(eval \
 178  -include $(addsuffix *.d, $(sort $(dir $($(var)))))))
 179endef
 180