+# These are used when we want to do substitutions without confusing Make
+NULL :=
+SPACE := $(NULL) #
COMMA := ,
# Don't use implicit rules or variables
%.mak:
clean-target:
-# Flags for C++ compilation
-QEMU_CXXFLAGS = -D__STDC_LIMIT_MACROS $(filter-out -Wstrict-prototypes -Wmissing-prototypes -Wnested-externs -Wold-style-declaration -Wold-style-definition -Wredundant-decls, $(QEMU_CFLAGS))
-
# Flags for dependency generation
QEMU_DGFLAGS += -MMD -MP -MT $@ -MF $(@D)/$(*F).d
-# Same as -I$(SRC_PATH) -I., but for the nested source/object directories
-QEMU_INCLUDES += -I$(<D) -I$(@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)))
$(filter-out %.o %.mo,$1))
%.o: %.c
- $(call quiet-command,$(CC) $(QEMU_INCLUDES) $(QEMU_CFLAGS) $(QEMU_DGFLAGS) $(CFLAGS) $($@-cflags) -c -o $@ $<,"CC","$(TARGET_DIR)$@")
+ $(call quiet-command,$(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)$@")
# must link with the C++ compiler, not the plain C compiler.
LINKPROG = $(or $(CXX),$(CC))
-LINK = $(call quiet-command, $(LINKPROG) $(QEMU_CFLAGS) $(CFLAGS) $(LDFLAGS) -o $@ \
+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_INCLUDES) $(QEMU_CFLAGS) $(QEMU_DGFLAGS) $(CFLAGS) -c -o $@ $<,"CCAS","$(TARGET_DIR)$@")
+ $(call quiet-command,$(CCAS) $(QEMU_LOCAL_INCLUDES) $(QEMU_INCLUDES) \
+ $(QEMU_CFLAGS) $(QEMU_DGFLAGS) $(CFLAGS) \
+ -c -o $@ $<,"CCAS","$(TARGET_DIR)$@")
%.o: %.cc
- $(call quiet-command,$(CXX) $(QEMU_INCLUDES) $(QEMU_CXXFLAGS) $(QEMU_DGFLAGS) $(CFLAGS) $($@-cflags) -c -o $@ $<,"CXX","$(TARGET_DIR)$@")
+ $(call quiet-command,$(CXX) $(QEMU_LOCAL_INCLUDES) $(QEMU_INCLUDES) \
+ $(QEMU_CXXFLAGS) $(QEMU_DGFLAGS) $(CFLAGS) $($@-cflags) \
+ -c -o $@ $<,"CXX","$(TARGET_DIR)$@")
%.o: %.cpp
- $(call quiet-command,$(CXX) $(QEMU_INCLUDES) $(QEMU_CXXFLAGS) $(QEMU_DGFLAGS) $(CFLAGS) $($@-cflags) -c -o $@ $<,"CXX","$(TARGET_DIR)$@")
+ $(call quiet-command,$(CXX) $(QEMU_LOCAL_INCLUDES) $(QEMU_INCLUDES) \
+ $(QEMU_CXXFLAGS) $(QEMU_DGFLAGS) $(CFLAGS) $($@-cflags) \
+ -c -o $@ $<,"CXX","$(TARGET_DIR)$@")
%.o: %.m
- $(call quiet-command,$(OBJCC) $(QEMU_INCLUDES) $(QEMU_CFLAGS) $(QEMU_DGFLAGS) $(CFLAGS) $($@-cflags) -c -o $@ $<,"OBJC","$(TARGET_DIR)$@")
+ $(call quiet-command,$(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): QEMU_LDFLAGS += $(LDFLAGS_SHARED)
%$(DSOSUF): %.mo
$(call LINK,$^)
@# Copy to build root so modules can be loaded when program started without install
# 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 = $(if $(V),$1,$(if $(2),@printf " %-7s %s\n" $2 $3 && $1, @$1))
+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-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
+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
# ../water/ice.mo-libs = -licemaker
# ../water/ice.mo-objs = ../water/ice1.o ../water/ice2.o
#
-# Note that 'hot' didn't include 'season/' in the input, so 'summer.o' is not
+# Note that 'hot' didn't include 'water/' in the input, so 'steam.o' is not
# included.
#
define unnest-vars
endef
TEXI2MAN = $(call quiet-command, \
- perl -Ww -- $(SRC_PATH)/scripts/texi2pod.pl $< $@.pod && \
+ perl -Ww -- $(SRC_PATH)/scripts/texi2pod.pl $(TEXI2PODFLAGS) $< $@.pod && \
$(POD2MAN) --section=$(subst .,,$(suffix $@)) --center=" " --release=" " $@.pod > $@, \
"GEN","$@")
$(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,$1))))
+
+print-%:
+ @echo '$*=$($*)'
projects / thirdparty / qemu.git / blobdiff