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