criu/images/Makefile
Alexander Mikhalitsyn b34e0b2e68
tree-wide: Makefile: use -MP CFLAG to produce .d files
Let's use -MP gcc flag when generating dependency (.d) files.
According to the manual:

       -MP This option instructs CPP to add a phony target for each
           dependency other than the main file, causing each to depend on
           nothing.  These dummy rules work around errors make gives if
           you remove header files without updating the Makefile to
           match.

This fixes incremental rebuild failures like:
make[2]: 'compel/compel-host-bin' is up to date.
  DEP      criu/arch/x86/crtools.d
  CC       criu/arch/x86/crtools.o
  LINK     criu/arch/x86/crtools.built-in.o
make[3]: Nothing to be done for 'all'.
make[3]: *** No rule to make target 'criu/include/linux/rseq.h', needed by 'criu/pie/parasite.o'.  Stop.
make[2]: *** [criu/Makefile:59: pie] Error 2

Usually, after header files renames or source directory tree reorganization.

Signed-off-by: Alexander Mikhalitsyn <aleksandr.mikhalitsyn@futurfusion.io>
2026-07-19 19:04:14 +02:00

147 lines
4.5 KiB
Makefile

proto-obj-y += stats.o
proto-obj-y += core.o
proto-obj-y += core-x86.o
proto-obj-y += core-mips.o
proto-obj-y += core-loongarch64.o
proto-obj-y += core-arm.o
proto-obj-y += core-aarch64.o
proto-obj-y += core-ppc64.o
proto-obj-y += core-s390.o
proto-obj-y += core-riscv64.o
proto-obj-y += cpuinfo.o
proto-obj-y += inventory.o
proto-obj-y += fdinfo.o
proto-obj-y += fown.o
proto-obj-y += ns.o
proto-obj-y += regfile.o
proto-obj-y += ghost-file.o
proto-obj-y += fifo.o
proto-obj-y += remap-file-path.o
proto-obj-y += eventfd.o
proto-obj-y += eventpoll.o
proto-obj-y += fh.o
proto-obj-y += fsnotify.o
proto-obj-y += signalfd.o
proto-obj-y += fs.o
proto-obj-y += pstree.o
proto-obj-y += pipe.o
proto-obj-y += tcp-stream.o
proto-obj-y += sk-packet.o
proto-obj-y += mnt.o
proto-obj-y += pipe-data.o
proto-obj-y += sa.o
proto-obj-y += timer.o
proto-obj-y += timerfd.o
proto-obj-y += mm.o
proto-obj-y += sk-opts.o
proto-obj-y += sk-unix.o
proto-obj-y += sk-inet.o
proto-obj-y += tun.o
proto-obj-y += sk-netlink.o
proto-obj-y += packet-sock.o
proto-obj-y += ipc-var.o
proto-obj-y += ipc-desc.o
proto-obj-y += ipc-shm.o
proto-obj-y += ipc-msg.o
proto-obj-y += ipc-sem.o
proto-obj-y += utsns.o
proto-obj-y += creds.o
proto-obj-y += vma.o
proto-obj-y += netdev.o
proto-obj-y += tty.o
proto-obj-y += file-lock.o
proto-obj-y += rlimit.o
proto-obj-y += pagemap.o
proto-obj-y += siginfo.o
proto-obj-y += rpc.o
proto-obj-y += ext-file.o
proto-obj-y += cgroup.o
proto-obj-y += userns.o
proto-obj-y += pidns.o
proto-obj-y += opts.o
proto-obj-y += seccomp.o
proto-obj-y += binfmt-misc.o
proto-obj-y += time.o
proto-obj-y += sysctl.o
proto-obj-y += autofs.o
proto-obj-y += macvlan.o
proto-obj-y += sit.o
proto-obj-y += memfd.o
proto-obj-y += timens.o
proto-obj-y += img-streamer.o
proto-obj-y += bpfmap-file.o
proto-obj-y += bpfmap-data.o
proto-obj-y += apparmor.o
proto-obj-y += rseq.o
proto-obj-y += pidfd.o
CFLAGS += -iquote $(obj)/
#
# Generates a set of names from protobuf "import" directive.
# The names are bare, ie no suffixes.
define gen-proto-dep-names
$(shell grep "^[[:blank:]]*import[[:blank:]]" $(1) | \
sed -e 's/[[:blank:]]*import[[:blank:]]*//' \
-e 's/[\";]//g' \
-e 's/\.proto//g' | \
sort | uniq)
endef
makefile-deps := Makefile $(obj)/Makefile
#
# Generate descriptor.pb-c.c and descriptor.pb-c.h to compile opts.proto.
DESCRIPTOR_DIR := images/google/protobuf
GOOGLE_INCLUDE=$(shell pkg-config protobuf --variable=includedir)/google/protobuf
$(DESCRIPTOR_DIR)/descriptor.pb-c.c: $(GOOGLE_INCLUDE)/descriptor.proto
$(call msg-gen, $@)
$(Q) protoc --proto_path=/usr/include --proto_path=$(obj)/ --c_out=$(obj)/ $<
cleanup-y += $(DESCRIPTOR_DIR)/descriptor.pb-c.d
submrproper:
$(Q) rm -f $(DESCRIPTOR_DIR)/*
.PHONY: submrproper
mrproper: submrproper
#
# Generates rules needed to compile protobuf files.
define gen-proto-rules
$(obj)/$(1).pb-c.c $(obj)/$(1).pb-c.h: $(obj)/$(1).proto $(addsuffix .pb-c.c,$(addprefix $(obj)/,$(2))) $(makefile-deps)
$$(E) " PBCC " $$@
$$(Q) protoc --proto_path=$(obj)/ --c_out=$(obj)/ $$<
ifeq ($(PROTOUFIX),y)
$$(Q) sed -i -e 's/4294967295/0xFFFFFFFF/g' $$@
$$(Q) sed -i -e 's/4294967295/0xFFFFFFFF/g' $$(patsubst %.c,%.h,$$@)
$$(Q) sed -i -e 's/4294967295/0xFFFFFFFF/g' $$(patsubst %.h,%.c,$$@)
endif
$(obj)/$(1).pb-c.d: $(obj)/$(1).pb-c.c $(addsuffix .pb-c.d,$(addprefix $(obj)/,$(2))) $(makefile-deps)
$$(E) " DEP " $$@
$$(Q) $$(CC) -M -MP -MT $$@ -MT $$(patsubst %.d,%.o,$$@) $$(CFLAGS) $$< -o $$@
endef
$(foreach file, $(proto-obj-y), \
$(eval $(call gen-proto-rules,$(file:.o=), \
$(call gen-proto-dep-names, \
$(addprefix $(obj)/,$(file:.o=.proto))))))
$(obj)/%.o: $(obj)/%.pb-c.c $(obj)/%.pb-c.h
$(E) " CC " $@
$(Q) $(CC) -c $(CFLAGS) $< -o $@
$(obj)/built-in.o: $(addprefix $(obj)/,$(proto-obj-y))
$(E) " LINK " $@
$(Q) $(LD) $(ldflags-y) -r -o $@ $^
cleanup-y += $(obj)/built-in.o
ifneq ($(MAKECMDGOALS),clean)
ifneq ($(MAKECMDGOALS),mrproper)
-include $(addprefix $(obj)/,$(proto-obj-y:.o=.pb-c.d))
endif
endif
cleanup-y += $(call cleanify,$(addprefix $(obj)/,$(proto-obj-y)))
cleanup-y += $(call cleanify,$(addprefix $(obj)/,$(proto-obj-y:.o=.pb-c.o)))
mrproper-y += $(addprefix $(obj)/,$(proto-obj-y:.o=.pb-c.c))
mrproper-y += $(addprefix $(obj)/,$(proto-obj-y:.o=.pb-c.h))