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# These are used when we want to do substitutions without confusing Make
NULL :=
SPACE := $(NULL) #
COMMA := ,
# Don't use implicit rules or variables
# we have explicit rules for everything
MAKEFLAGS += -rR
# Files with this suffixes are final, don't try to generate them
# using implicit rules
%/trace-events:
%.hx:
%.py:
%.objs:
%.d:
%.h:
%.c:
%.cc:
%.cpp:
%.m:
%.mak:
# Flags for dependency generation
QEMU_DGFLAGS += -MMD -MP -MT $@ -MF $(@D)/$(*F).d
# Compiler searches the source file dir first, but in vpath builds
# we need to make it search the build dir too, before any other
# explicit search paths. There are two search locations in the build
# dir, one absolute and the other relative to the compiler working
# directory. These are the same for target-independent files, but
# different for target-dependent ones.
QEMU_LOCAL_INCLUDES = -iquote $(BUILD_DIR) -iquote $(BUILD_DIR)/$(@D) -iquote $(@D)
WL := -Wl,
ifdef CONFIG_DARWIN
whole-archive = $(WL)-force_load,$1
else
whole-archive = $(WL)--whole-archive $1 $(WL)--no-whole-archive
endif
extract-libs = $(strip $(foreach o,$1,$($o-libs)))
%.o: %.c
@mkdir -p $(dir $@)
$(call quiet-command,$(CC) $(QEMU_LOCAL_INCLUDES) $(QEMU_INCLUDES) \
$(QEMU_CFLAGS) $(QEMU_DGFLAGS) $(CFLAGS) $($@-cflags) \
-c -o $@ $<,"CC","$(TARGET_DIR)$@")
# If we have a CXX we might have some C++ objects, in which case we
# must link with the C++ compiler, not the plain C compiler.
LINKPROG = $(or $(CXX),$(CC))
LINK = $(call quiet-command, $(LINKPROG) $(CFLAGS) $(QEMU_LDFLAGS) -o $@ \
$(filter-out %.a %.fa,$1) \
$(foreach l,$(filter %.fa,$1),$(call whole-archive,$l)) \
$(filter %.a,$1) \
$(call extract-libs,$1) $(LIBS),"LINK","$(TARGET_DIR)$@")
%.o: %.S
$(call quiet-command,$(CCAS) $(QEMU_LOCAL_INCLUDES) $(QEMU_INCLUDES) \
$(QEMU_CFLAGS) $(QEMU_DGFLAGS) $(CFLAGS) \
-c -o $@ $<,"CCAS","$(TARGET_DIR)$@")
%.o: %.cc
$(call quiet-command,$(CXX) $(QEMU_LOCAL_INCLUDES) $(QEMU_INCLUDES) \
$(QEMU_CXXFLAGS) $(QEMU_DGFLAGS) $(CXXFLAGS) $($@-cflags) \
-c -o $@ $<,"CXX","$(TARGET_DIR)$@")
%.o: %.cpp
$(call quiet-command,$(CXX) $(QEMU_LOCAL_INCLUDES) $(QEMU_INCLUDES) \
$(QEMU_CXXFLAGS) $(QEMU_DGFLAGS) $(CXXFLAGS) $($@-cflags) \
-c -o $@ $<,"CXX","$(TARGET_DIR)$@")
%.o: %.m
$(call quiet-command,$(OBJCC) $(QEMU_LOCAL_INCLUDES) $(QEMU_INCLUDES) \
$(QEMU_CFLAGS) $(QEMU_DGFLAGS) $(CFLAGS) $($@-cflags) \
-c -o $@ $<,"OBJC","$(TARGET_DIR)$@")
%.o: %.dtrace
$(call quiet-command,dtrace -o $@ -G -s $<,"GEN","$(TARGET_DIR)$@")
.PHONY: modules
modules:
%$(EXESUF): %.o
$(call LINK,$(filter %.o %.a %.fa, $^))
%.a:
$(call quiet-command,rm -f $@ && $(AR) rcs $@ $^,"AR","$(TARGET_DIR)$@")
# Usage: $(call quiet-command,command and args,"NAME","args to print")
# This will run "command and args", and either:
# if V=1 just print the whole command and args
# otherwise print the 'quiet' output in the format " NAME args to print"
# NAME should be a short name of the command, 7 letters or fewer.
# If called with only a single argument, will print nothing in quiet mode.
quiet-command-run = $(if $(V),,$(if $2,printf " %-7s %s\n" $2 $3 && ))$1
quiet-@ = $(if $(V),,@)
quiet-command = $(quiet-@)$(call quiet-command-run,$1,$2,$3)
# cc-option
# Usage: CFLAGS+=$(call cc-option, -falign-functions=0, -malign-functions=0)
cc-option = $(if $(shell $(CC) $1 $2 -S -o /dev/null -xc /dev/null \
>/dev/null 2>&1 && echo OK), $2, $3)
cc-c-option = $(if $(shell $(CC) $1 $2 -c -o /dev/null -xc /dev/null \
>/dev/null 2>&1 && echo OK), $2, $3)
VPATH_SUFFIXES = %.c %.h %.S %.cc %.cpp %.m %.mak %.texi %.sh %.rc Kconfig% %.json.in
set-vpath = $(if $1,$(foreach PATTERN,$(VPATH_SUFFIXES),$(eval vpath $(PATTERN) $1)))
# install-prog list, dir
define install-prog
$(INSTALL_DIR) "$2"
$(INSTALL_PROG) $1 "$2"
$(if $(STRIP),$(STRIP) $(foreach T,$1,"$2/$(notdir $T)"),)
endef
# Logical functions (for operating on y/n values like CONFIG_FOO vars)
# Inputs to these must be either "y" (true) or "n" or "" (both false)
# Output is always either "y" or "n".
# Usage: $(call land,$(CONFIG_FOO),$(CONFIG_BAR))
# Logical NOT
lnot = $(if $(subst n,,$1),n,y)
# Logical AND
land = $(if $(findstring yy,$1$2),y,n)
# Logical OR
lor = $(if $(findstring y,$1$2),y,n)
# Logical XOR (note that this is the inverse of leqv)
lxor = $(if $(filter $(call lnot,$1),$(call lnot,$2)),n,y)
# Logical equivalence (note that leqv "","n" is true)
leqv = $(if $(filter $(call lnot,$1),$(call lnot,$2)),y,n)
# Logical if: like make's $(if) but with an leqv-like test
lif = $(if $(subst n,,$1),$2,$3)
# String testing functions: inputs to these can be any string;
# the output is always either "y" or "n". Leading and trailing whitespace
# is ignored when comparing strings.
# String equality
eq = $(if $(subst $2,,$1)$(subst $1,,$2),n,y)
# String inequality
ne = $(if $(subst $2,,$1)$(subst $1,,$2),y,n)
# Emptiness/non-emptiness tests:
isempty = $(if $1,n,y)
notempty = $(if $1,y,n)
.PHONY: clean-timestamp
clean-timestamp:
rm -f *.timestamp
clean: clean-timestamp
# will delete the target of a rule if commands exit with a nonzero exit status
.DELETE_ON_ERROR:
print-%:
@echo '$*=$($*)'
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