Makefile.modfinal (666fab4a3ea143315a9c059fad9f3a0f1365d54b) Makefile.modfinal (5f9ae91f7c0dbbc4195e2a6c8eedcaeb5b9e4cbb)
1# SPDX-License-Identifier: GPL-2.0-only
2# ===========================================================================
3# Module final link
4# ===========================================================================
5
6PHONY := __modfinal
7__modfinal:
8
1# SPDX-License-Identifier: GPL-2.0-only
2# ===========================================================================
3# Module final link
4# ===========================================================================
5
6PHONY := __modfinal
7__modfinal:
8
9include include/config/auto.conf
9include $(srctree)/scripts/Kbuild.include
10
11# for c_flags
12include $(srctree)/scripts/Makefile.lib
13
14# find all modules listed in modules.order
15modules := $(sort $(shell cat $(MODORDER)))
16

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31
32quiet_cmd_ld_ko_o = LD [M] $@
33 cmd_ld_ko_o = \
34 $(LD) -r $(KBUILD_LDFLAGS) \
35 $(KBUILD_LDFLAGS_MODULE) $(LDFLAGS_MODULE) \
36 -T scripts/module.lds -o $@ $(filter %.o, $^); \
37 $(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true)
38
10include $(srctree)/scripts/Kbuild.include
11
12# for c_flags
13include $(srctree)/scripts/Makefile.lib
14
15# find all modules listed in modules.order
16modules := $(sort $(shell cat $(MODORDER)))
17

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32
33quiet_cmd_ld_ko_o = LD [M] $@
34 cmd_ld_ko_o = \
35 $(LD) -r $(KBUILD_LDFLAGS) \
36 $(KBUILD_LDFLAGS_MODULE) $(LDFLAGS_MODULE) \
37 -T scripts/module.lds -o $@ $(filter %.o, $^); \
38 $(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true)
39
39$(modules): %.ko: %.o %.mod.o scripts/module.lds FORCE
40 +$(call if_changed,ld_ko_o)
40quiet_cmd_btf_ko = BTF [M] $@
41 cmd_btf_ko = LLVM_OBJCOPY=$(OBJCOPY) $(PAHOLE) -J --btf_base vmlinux $@
41
42
43# Same as newer-prereqs, but allows to exclude specified extra dependencies
44newer_prereqs_except = $(filter-out $(PHONY) $(1),$?)
45
46# Same as if_changed, but allows to exclude specified extra dependencies
47if_changed_except = $(if $(call newer_prereqs_except,$(2))$(cmd-check), \
48 $(cmd); \
49 printf '%s\n' 'cmd_$@ := $(make-cmd)' > $(dot-target).cmd, @:)
50
51# Re-generate module BTFs if either module's .ko or vmlinux changed
52$(modules): %.ko: %.o %.mod.o scripts/module.lds vmlinux FORCE
53 +$(call if_changed_except,ld_ko_o,vmlinux)
54ifdef CONFIG_DEBUG_INFO_BTF_MODULES
55 +$(if $(newer-prereqs),$(call cmd,btf_ko))
56endif
57
42targets += $(modules) $(modules:.ko=.mod.o)
43
44# Add FORCE to the prequisites of a target to force it to be always rebuilt.
45# ---------------------------------------------------------------------------
46
47PHONY += FORCE
48FORCE:
49
50# Read all saved command lines and dependencies for the $(targets) we
51# may be building above, using $(if_changed{,_dep}). As an
52# optimization, we don't need to read them if the target does not
53# exist, we will rebuild anyway in that case.
54
55existing-targets := $(wildcard $(sort $(targets)))
56
57-include $(foreach f,$(existing-targets),$(dir $(f)).$(notdir $(f)).cmd)
58
59.PHONY: $(PHONY)
58targets += $(modules) $(modules:.ko=.mod.o)
59
60# Add FORCE to the prequisites of a target to force it to be always rebuilt.
61# ---------------------------------------------------------------------------
62
63PHONY += FORCE
64FORCE:
65
66# Read all saved command lines and dependencies for the $(targets) we
67# may be building above, using $(if_changed{,_dep}). As an
68# optimization, we don't need to read them if the target does not
69# exist, we will rebuild anyway in that case.
70
71existing-targets := $(wildcard $(sort $(targets)))
72
73-include $(foreach f,$(existing-targets),$(dir $(f)).$(notdir $(f)).cmd)
74
75.PHONY: $(PHONY)