| |
| # 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: |
| clean-target: |
| |
| # 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 $(BUILD_DIR)/$(@D) -iquote $(@D) |
| |
| WL_U := -Wl,-u, |
| find-symbols = $(if $1, $(sort $(shell $(NM) -P -g $1 | $2))) |
| defined-symbols = $(call find-symbols,$1,awk '$$2!="U"{print $$1}') |
| undefined-symbols = $(call find-symbols,$1,awk '$$2=="U"{print $$1}') |
| |
| # All the .mo objects in -m variables are also added into corresponding -y |
| # variable in unnest-vars, but filtered out here, when LINK is called. |
| # |
| # The .mo objects are supposed to be linked as a DSO, for module build. So here |
| # they are only used as a placeholders to generate those "archive undefined" |
| # symbol options (-Wl,-u,$symbol_name), which are the archive functions |
| # referenced by the code in the DSO. |
| # |
| # Also the presence in -y variables will also guarantee they are built before |
| # linking executables that will load them. So we can look up symbol reference |
| # in LINK. |
| # |
| # This is necessary because the exectuable itself may not use the function, in |
| # which case the function would not be linked in. Then the DSO loading will |
| # fail because of the missing symbol. |
| process-archive-undefs = $(filter-out %.a %.mo,$1) \ |
| $(addprefix $(WL_U), \ |
| $(filter $(call defined-symbols,$(filter %.a, $1)), \ |
| $(call undefined-symbols,$(filter %.mo,$1)))) \ |
| $(filter %.a,$1) |
| |
| extract-libs = $(strip $(foreach o,$(filter-out %.mo,$1),$($o-libs))) |
| expand-objs = $(strip $(sort $(filter %.o,$1)) \ |
| $(foreach o,$(filter %.mo,$1),$($o-objs)) \ |
| $(filter-out %.o %.mo,$1)) |
| |
| %.o: %.c |
| $(call quiet-command,$(CC) $(QEMU_LOCAL_INCLUDES) $(QEMU_INCLUDES) \ |
| $(QEMU_CFLAGS) $(QEMU_DGFLAGS) $(CFLAGS) $($@-cflags) \ |
| -c -o $@ $<,"CC","$(TARGET_DIR)$@") |
| %.o: %.rc |
| $(call quiet-command,$(WINDRES) -I. -o $@ $<,"RC","$(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) $(QEMU_LDFLAGS) $(QEMU_CFLAGS) $(CFLAGS) $(LDFLAGS) -o $@ \ |
| $(call process-archive-undefs, $1) \ |
| $(version-obj-y) $(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) $(CFLAGS) $($@-cflags) \ |
| -c -o $@ $<,"CXX","$(TARGET_DIR)$@") |
| |
| %.o: %.cpp |
| $(call quiet-command,$(CXX) $(QEMU_LOCAL_INCLUDES) $(QEMU_INCLUDES) \ |
| $(QEMU_CXXFLAGS) $(QEMU_DGFLAGS) $(CFLAGS) $($@-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)$@") |
| |
| DSO_OBJ_CFLAGS := -fPIC -DBUILD_DSO |
| module-common.o: CFLAGS += $(DSO_OBJ_CFLAGS) |
| %$(DSOSUF): LDFLAGS += $(LDFLAGS_SHARED) |
| %$(DSOSUF): %.mo |
| $(call LINK,$^) |
| @# Copy to build root so modules can be loaded when program started without install |
| $(if $(findstring /,$@),$(call quiet-command,cp $@ $(subst /,-,$@),"CP","$(subst /,-,$@)")) |
| |
| |
| LD_REL := $(CC) -nostdlib $(LD_REL_FLAGS) |
| |
| %.mo: |
| $(call quiet-command,$(LD_REL) -o $@ $^,"LD","$(TARGET_DIR)$@") |
| |
| .PHONY: modules |
| modules: |
| |
| %$(EXESUF): %.o |
| $(call LINK,$(filter %.o %.a %.mo, $^)) |
| |
| %.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 |
| |
| # find-in-path |
| # Usage: $(call find-in-path, prog) |
| # Looks in the PATH if the argument contains no slash, else only considers one |
| # specific directory. Returns an # empty string if the program doesn't exist |
| # there. |
| find-in-path = $(if $(findstring /, $1), \ |
| $(wildcard $1), \ |
| $(wildcard $(patsubst %, %/$1, $(subst :, ,$(PATH))))) |
| |
| # 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 $1,y,n) |
| |
| # Generate files with tracetool |
| TRACETOOL=$(PYTHON) $(SRC_PATH)/scripts/tracetool.py |
| |
| # Generate timestamp files for .h include files |
| |
| config-%.h: config-%.h-timestamp |
| @cmp $< $@ >/dev/null 2>&1 || cp $< $@ |
| |
| config-%.h-timestamp: config-%.mak $(SRC_PATH)/scripts/create_config |
| $(call quiet-command, sh $(SRC_PATH)/scripts/create_config < $< > $@,"GEN","$(TARGET_DIR)config-$*.h") |
| |
| .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: |
| |
| # save-vars |
| # Usage: $(call save-vars, vars) |
| # Save each variable $v in $vars as save-vars-$v, save their object's |
| # variables, then clear $v. saved-vars-$v contains the variables that |
| # where saved for the objects, in order to speedup load-vars. |
| define save-vars |
| $(foreach v,$1, |
| $(eval save-vars-$v := $(value $v)) |
| $(eval saved-vars-$v := $(foreach o,$($v), \ |
| $(if $($o-cflags), $o-cflags $(eval save-vars-$o-cflags := $($o-cflags))$(eval $o-cflags := )) \ |
| $(if $($o-libs), $o-libs $(eval save-vars-$o-libs := $($o-libs))$(eval $o-libs := )) \ |
| $(if $($o-objs), $o-objs $(eval save-vars-$o-objs := $($o-objs))$(eval $o-objs := )))) |
| $(eval $v := )) |
| endef |
| |
| # load-vars |
| # Usage: $(call load-vars, vars, add_var) |
| # Load the saved value for each variable in @vars, and the per object |
| # variables. |
| # Append @add_var's current value to the loaded value. |
| define load-vars |
| $(eval $2-new-value := $(value $2)) |
| $(foreach v,$1, |
| $(eval $v := $(value save-vars-$v)) |
| $(foreach o,$(saved-vars-$v), |
| $(eval $o := $(save-vars-$o)) $(eval save-vars-$o := )) |
| $(eval save-vars-$v := ) |
| $(eval saved-vars-$v := )) |
| $(eval $2 := $(value $2) $($2-new-value)) |
| endef |
| |
| # fix-paths |
| # Usage: $(call fix-paths, obj_path, src_path, vars) |
| # Add prefix @obj_path to all objects in @vars, and add prefix @src_path to all |
| # directories in @vars. |
| define fix-paths |
| $(foreach v,$3, |
| $(foreach o,$($v), |
| $(if $($o-libs), |
| $(eval $1$o-libs := $($o-libs))) |
| $(if $($o-cflags), |
| $(eval $1$o-cflags := $($o-cflags))) |
| $(if $($o-objs), |
| $(eval $1$o-objs := $(addprefix $1,$($o-objs))))) |
| $(eval $v := $(addprefix $1,$(filter-out %/,$($v))) \ |
| $(addprefix $2,$(filter %/,$($v))))) |
| endef |
| |
| # unnest-var-recursive |
| # Usage: $(call unnest-var-recursive, obj_prefix, vars, var) |
| # |
| # Unnest @var by including subdir Makefile.objs, while protect others in @vars |
| # unchanged. |
| # |
| # @obj_prefix is the starting point of object path prefix. |
| # |
| define unnest-var-recursive |
| $(eval dirs := $(sort $(filter %/,$($3)))) |
| $(eval $3 := $(filter-out %/,$($3))) |
| $(foreach d,$(dirs:%/=%), |
| $(call save-vars,$2) |
| $(eval obj := $(if $1,$1/)$d) |
| $(eval -include $(SRC_PATH)/$d/Makefile.objs) |
| $(call fix-paths,$(if $1,$1/)$d/,$d/,$2) |
| $(call load-vars,$2,$3) |
| $(call unnest-var-recursive,$1,$2,$3)) |
| endef |
| |
| # unnest-vars |
| # Usage: $(call unnest-vars, obj_prefix, vars) |
| # |
| # @obj_prefix: object path prefix, can be empty, or '..', etc. Don't include |
| # ending '/'. |
| # |
| # @vars: the list of variable names to unnest. |
| # |
| # This macro will scan subdirectories's Makefile.objs, include them, to build |
| # up each variable listed in @vars. |
| # |
| # Per object and per module cflags and libs are saved with relative path fixed |
| # as well, those variables include -libs, -cflags and -objs. Items in -objs are |
| # also fixed to relative path against SRC_PATH plus the prefix @obj_prefix. |
| # |
| # All nested variables postfixed by -m in names are treated as DSO variables, |
| # and will be built as modules, if enabled. |
| # |
| # A simple example of the unnest: |
| # |
| # obj_prefix = .. |
| # vars = hot cold |
| # hot = fire.o sun.o season/ |
| # cold = snow.o water/ season/ |
| # |
| # Unnest through a faked source directory structure: |
| # |
| # SRC_PATH |
| # ├── water |
| # │ └── Makefile.objs──────────────────┐ |
| # │ │ hot += steam.o │ |
| # │ │ cold += ice.mo │ |
| # │ │ ice.mo-libs := -licemaker │ |
| # │ │ ice.mo-objs := ice1.o ice2.o │ |
| # │ └──────────────────────────────┘ |
| # │ |
| # └── season |
| # └── Makefile.objs──────┐ |
| # │ hot += summer.o │ |
| # │ cold += winter.o │ |
| # └──────────────────┘ |
| # |
| # In the end, the result will be: |
| # |
| # hot = ../fire.o ../sun.o ../season/summer.o |
| # cold = ../snow.o ../water/ice.mo ../season/winter.o |
| # ../water/ice.mo-libs = -licemaker |
| # ../water/ice.mo-objs = ../water/ice1.o ../water/ice2.o |
| # |
| # Note that 'hot' didn't include 'water/' in the input, so 'steam.o' is not |
| # included. |
| # |
| define unnest-vars |
| # In the case of target build (i.e. $1 == ..), fix path for top level |
| # Makefile.objs objects |
| $(if $1,$(call fix-paths,$1/,,$2)) |
| |
| # Descend and include every subdir Makefile.objs |
| $(foreach v, $2, |
| $(call unnest-var-recursive,$1,$2,$v) |
| # Pass the .mo-cflags and .mo-libs along to its member objects |
| $(foreach o, $(filter %.mo,$($v)), |
| $(foreach p,$($o-objs), |
| $(if $($o-cflags), $(eval $p-cflags += $($o-cflags))) |
| $(if $($o-libs), $(eval $p-libs += $($o-libs)))))) |
| |
| # For all %.mo objects that are directly added into -y, just expand them |
| $(foreach v,$(filter %-y,$2), |
| $(eval $v := $(foreach o,$($v),$(if $($o-objs),$($o-objs),$o)))) |
| |
| $(foreach v,$(filter %-m,$2), |
| # All .o found in *-m variables are single object modules, create .mo |
| # for them |
| $(foreach o,$(filter %.o,$($v)), |
| $(eval $(o:%.o=%.mo)-objs := $o)) |
| # Now unify .o in -m variable to .mo |
| $(eval $v := $($v:%.o=%.mo)) |
| $(eval modules-m += $($v)) |
| |
| # For module build, build shared libraries during "make modules" |
| # For non-module build, add -m to -y |
| $(if $(CONFIG_MODULES), |
| $(foreach o,$($v), |
| $(eval $($o-objs): CFLAGS += $(DSO_OBJ_CFLAGS)) |
| $(eval $o: $($o-objs))) |
| $(eval $(patsubst %-m,%-y,$v) += $($v)) |
| $(eval modules: $($v:%.mo=%$(DSOSUF))), |
| $(eval $(patsubst %-m,%-y,$v) += $(call expand-objs, $($v))))) |
| |
| # Post-process all the unnested vars |
| $(foreach v,$2, |
| $(foreach o, $(filter %.mo,$($v)), |
| # Find all the .mo objects in variables and add dependency rules |
| # according to .mo-objs. Report error if not set |
| $(if $($o-objs), |
| $(eval $(o:%.mo=%$(DSOSUF)): module-common.o $($o-objs)), |
| $(error $o added in $v but $o-objs is not set))) |
| $(shell mkdir -p ./ $(sort $(dir $($v)))) |
| # Include all the .d files |
| $(eval -include $(patsubst %.o,%.d,$(patsubst %.mo,%.d,$($v)))) |
| $(eval $v := $(filter-out %/,$($v)))) |
| endef |
| |
| TEXI2MAN = $(call quiet-command, \ |
| perl -Ww -- $(SRC_PATH)/scripts/texi2pod.pl $(TEXI2PODFLAGS) $< $@.pod && \ |
| $(POD2MAN) --section=$(subst .,,$(suffix $@)) --center=" " --release=" " $@.pod > $@, \ |
| "GEN","$@") |
| |
| %.1: |
| $(call TEXI2MAN) |
| %.7: |
| $(call TEXI2MAN) |
| %.8: |
| $(call TEXI2MAN) |
| |
| GEN_SUBST = $(call quiet-command, \ |
| sed -e "s!@libexecdir@!$(libexecdir)!g" < $< > $@, \ |
| "GEN","$@") |
| |
| %.json: %.json.in |
| $(call GEN_SUBST) |