| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame^] | 1 | # SPDX-License-Identifier: GPL-2.0-only |
| 2 | # =========================================================================== |
| 3 | # Module final link |
| 4 | # =========================================================================== |
| 5 | |
| 6 | PHONY := __modfinal |
| 7 | __modfinal: |
| 8 | |
| 9 | include $(objtree)/include/config/auto.conf |
| 10 | include $(srctree)/scripts/Kbuild.include |
| 11 | |
| 12 | # for c_flags |
| 13 | include $(srctree)/scripts/Makefile.lib |
| 14 | |
| 15 | # find all modules listed in modules.order |
| 16 | modules := $(sort $(shell cat $(MODORDER))) |
| 17 | |
| 18 | __modfinal: $(modules) |
| 19 | @: |
| 20 | |
| 21 | # modname and part-of-module are set to make c_flags define proper module flags |
| 22 | modname = $(notdir $(@:.mod.o=)) |
| 23 | part-of-module = y |
| 24 | |
| 25 | quiet_cmd_cc_o_c = CC [M] $@ |
| 26 | cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< |
| 27 | |
| 28 | %.mod.o: %.mod.c FORCE |
| 29 | $(call if_changed_dep,cc_o_c) |
| 30 | |
| 31 | ARCH_POSTLINK := $(wildcard $(srctree)/arch/$(SRCARCH)/Makefile.postlink) |
| 32 | |
| 33 | quiet_cmd_ld_ko_o = LD [M] $@ |
| 34 | |
| 35 | ifdef CONFIG_LTO_CLANG |
| 36 | cmd_ld_ko_o = \ |
| 37 | $(LD) -r $(LDFLAGS) \ |
| 38 | $(KBUILD_LDFLAGS_MODULE) $(LDFLAGS_MODULE) \ |
| 39 | $(addprefix -T , $(KBUILD_LDS_MODULE)) \ |
| 40 | $(shell [ -s $(@:.ko=.o.symversions) ] && \ |
| 41 | echo -T $(@:.ko=.o.symversions)) \ |
| 42 | -o $@ --whole-archive $(filter %.o, $^); \ |
| 43 | $(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true) |
| 44 | |
| 45 | ifdef CONFIG_FTRACE_MCOUNT_RECORD |
| 46 | cmd_ld_ko_o += ; $(objtree)/scripts/recordmcount $(RECORDMCOUNT_FLAGS) $@ |
| 47 | endif |
| 48 | else |
| 49 | cmd_ld_ko_o = \ |
| 50 | $(LD) -r $(KBUILD_LDFLAGS) \ |
| 51 | $(KBUILD_LDFLAGS_MODULE) $(LDFLAGS_MODULE) \ |
| 52 | $(addprefix -T , $(KBUILD_LDS_MODULE)) \ |
| 53 | -o $@ $(filter %.o, $^); \ |
| 54 | $(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true) |
| 55 | endif |
| 56 | |
| 57 | $(modules): %.ko: %.o %.mod.o $(KBUILD_LDS_MODULE) FORCE |
| 58 | +$(call if_changed,ld_ko_o) |
| 59 | |
| 60 | targets += $(modules) $(modules:.ko=.mod.o) |
| 61 | |
| 62 | # Add FORCE to the prequisites of a target to force it to be always rebuilt. |
| 63 | # --------------------------------------------------------------------------- |
| 64 | |
| 65 | PHONY += FORCE |
| 66 | FORCE: |
| 67 | |
| 68 | # Read all saved command lines and dependencies for the $(targets) we |
| 69 | # may be building above, using $(if_changed{,_dep}). As an |
| 70 | # optimization, we don't need to read them if the target does not |
| 71 | # exist, we will rebuild anyway in that case. |
| 72 | |
| 73 | existing-targets := $(wildcard $(sort $(targets))) |
| 74 | |
| 75 | -include $(foreach f,$(existing-targets),$(dir $(f)).$(notdir $(f)).cmd) |
| 76 | |
| 77 | .PHONY: $(PHONY) |