mirror of https://gitee.com/openkylin/qemu.git
441 lines
16 KiB
Makefile
441 lines
16 KiB
Makefile
|
|
# 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) $(CFLAGS) $(QEMU_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): QEMU_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
|
|
$(call GEN_SUBST)
|
|
|
|
# Support for building multiple output files by atomically executing
|
|
# a single rule which depends on several input files (so the rule
|
|
# will be executed exactly once, not once per output file, and
|
|
# not multiple times in parallel.) For more explanation see:
|
|
# https://www.cmcrossroads.com/article/atomic-rules-gnu-make
|
|
|
|
# Given a space-separated list of filenames, create the name of
|
|
# a 'sentinel' file to use to indicate that they have been built.
|
|
# We use fixed text on the end to avoid accidentally triggering
|
|
# automatic pattern rules, and . on the start to make the file
|
|
# not show up in ls output.
|
|
sentinel = .$(subst $(SPACE),_,$(subst /,_,$1)).sentinel.
|
|
|
|
# Define an atomic rule that builds multiple outputs from multiple inputs.
|
|
# To use:
|
|
# $(call atomic,out1 out2 ...,in1 in2 ...)
|
|
# <TAB>rule to do the operation
|
|
#
|
|
# Make 4.3 will have native support for this, and you would be able
|
|
# to instead write:
|
|
# out1 out2 ... &: in1 in2 ...
|
|
# <TAB>rule to do the operation
|
|
#
|
|
# The way this works is that it creates a make rule
|
|
# "out1 out2 ... : sentinel-file ; @:" which says that the sentinel
|
|
# depends on the dependencies, and the rule to do that is "do nothing".
|
|
# Then we have a rule
|
|
# "sentinel-file : in1 in2 ..."
|
|
# whose commands start with "touch sentinel-file" and then continue
|
|
# with the rule text provided by the user of this 'atomic' function.
|
|
# The foreach... is there to delete the sentinel file if any of the
|
|
# output files don't exist, so that we correctly rebuild in that situation.
|
|
atomic = $(eval $1: $(call sentinel,$1) ; @:) \
|
|
$(call sentinel,$1) : $2 ; @touch $$@ \
|
|
$(foreach t,$1,$(if $(wildcard $t),,$(shell rm -f $(call sentinel,$1))))
|
|
|
|
print-%:
|
|
@echo '$*=$($*)'
|