diff options
Diffstat (limited to 'scripts/Makefile.modfinal')
| -rw-r--r-- | scripts/Makefile.modfinal | 46 |
1 files changed, 32 insertions, 14 deletions
diff --git a/scripts/Makefile.modfinal b/scripts/Makefile.modfinal index 411c1e600e7d..8568d256d6fb 100644 --- a/scripts/Makefile.modfinal +++ b/scripts/Makefile.modfinal @@ -6,15 +6,16 @@ PHONY := __modfinal __modfinal: +include include/config/auto.conf include $(srctree)/scripts/Kbuild.include # for c_flags include $(srctree)/scripts/Makefile.lib # find all modules listed in modules.order -modules := $(sort $(shell cat $(MODORDER))) +modules := $(call read-file, $(MODORDER)) -__modfinal: $(modules) +__modfinal: $(modules:%.o=%.ko) @: # modname and part-of-module are set to make c_flags define proper module flags @@ -22,25 +23,42 @@ modname = $(notdir $(@:.mod.o=)) part-of-module = y quiet_cmd_cc_o_c = CC [M] $@ - cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< + cmd_cc_o_c = $(CC) $(filter-out $(CC_FLAGS_CFI) $(CFLAGS_GCOV), $(c_flags)) -c -o $@ $< %.mod.o: %.mod.c FORCE $(call if_changed_dep,cc_o_c) -ARCH_POSTLINK := $(wildcard $(srctree)/arch/$(SRCARCH)/Makefile.postlink) - quiet_cmd_ld_ko_o = LD [M] $@ - cmd_ld_ko_o = \ + cmd_ld_ko_o += \ $(LD) -r $(KBUILD_LDFLAGS) \ $(KBUILD_LDFLAGS_MODULE) $(LDFLAGS_MODULE) \ - $(addprefix -T , $(KBUILD_LDS_MODULE)) \ - -o $@ $(filter %.o, $^); \ - $(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true) - -$(modules): %.ko: %.o %.mod.o $(KBUILD_LDS_MODULE) FORCE - +$(call if_changed,ld_ko_o) - -targets += $(modules) $(modules:.ko=.mod.o) + -T scripts/module.lds -o $@ $(filter %.o, $^) + +quiet_cmd_btf_ko = BTF [M] $@ + cmd_btf_ko = \ + if [ ! -f vmlinux ]; then \ + printf "Skipping BTF generation for %s due to unavailability of vmlinux\n" $@ 1>&2; \ + else \ + LLVM_OBJCOPY="$(OBJCOPY)" $(PAHOLE) -J $(PAHOLE_FLAGS) --btf_base vmlinux $@; \ + $(RESOLVE_BTFIDS) -b vmlinux $@; \ + fi; + +# Same as newer-prereqs, but allows to exclude specified extra dependencies +newer_prereqs_except = $(filter-out $(PHONY) $(1),$?) + +# Same as if_changed, but allows to exclude specified extra dependencies +if_changed_except = $(if $(call newer_prereqs_except,$(2))$(cmd-check), \ + $(cmd); \ + printf '%s\n' 'savedcmd_$@ := $(make-cmd)' > $(dot-target).cmd, @:) + +# Re-generate module BTFs if either module's .ko or vmlinux changed +%.ko: %.o %.mod.o scripts/module.lds $(and $(CONFIG_DEBUG_INFO_BTF_MODULES),$(KBUILD_BUILTIN),vmlinux) FORCE + +$(call if_changed_except,ld_ko_o,vmlinux) +ifdef CONFIG_DEBUG_INFO_BTF_MODULES + +$(if $(newer-prereqs),$(call cmd,btf_ko)) +endif + +targets += $(modules:%.o=%.ko) $(modules:%.o=%.mod.o) # Add FORCE to the prequisites of a target to force it to be always rebuilt. # --------------------------------------------------------------------------- |