Commit | Line | Data |
---|---|---|
9b9a3f20 MY |
1 | # SPDX-License-Identifier: GPL-2.0-only |
2 | # =========================================================================== | |
3 | # Module final link | |
4 | # =========================================================================== | |
5 | ||
6 | PHONY := __modfinal | |
7 | __modfinal: | |
8 | ||
5f9ae91f | 9 | include include/config/auto.conf |
9b9a3f20 MY |
10 | include $(srctree)/scripts/Kbuild.include |
11 | ||
c25e1c55 | 12 | # for c_flags |
9b9a3f20 MY |
13 | include $(srctree)/scripts/Makefile.lib |
14 | ||
15 | # find all modules listed in modules.order | |
6768fa4b | 16 | modules := $(call read-file, $(MODORDER)) |
9b9a3f20 | 17 | |
f65a4868 | 18 | __modfinal: $(modules:%.o=%.ko) |
9b9a3f20 MY |
19 | @: |
20 | ||
eb27ea5c | 21 | # modname and part-of-module are set to make c_flags define proper module flags |
9b9a3f20 | 22 | modname = $(notdir $(@:.mod.o=)) |
eb27ea5c | 23 | part-of-module = y |
9b9a3f20 MY |
24 | |
25 | quiet_cmd_cc_o_c = CC [M] $@ | |
25a21fbb | 26 | cmd_cc_o_c = $(CC) $(filter-out $(CC_FLAGS_CFI) $(CFLAGS_GCOV), $(c_flags)) -c -o $@ $< |
9b9a3f20 MY |
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] $@ | |
b1a1a1a0 | 34 | cmd_ld_ko_o += \ |
9b9a3f20 MY |
35 | $(LD) -r $(KBUILD_LDFLAGS) \ |
36 | $(KBUILD_LDFLAGS_MODULE) $(LDFLAGS_MODULE) \ | |
596b0474 | 37 | -T scripts/module.lds -o $@ $(filter %.o, $^); \ |
9b9a3f20 MY |
38 | $(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true) |
39 | ||
5f9ae91f | 40 | quiet_cmd_btf_ko = BTF [M] $@ |
e732b538 | 41 | cmd_btf_ko = \ |
2f7ab126 MO |
42 | if [ ! -f vmlinux ]; then \ |
43 | printf "Skipping BTF generation for %s due to unavailability of vmlinux\n" $@ 1>&2; \ | |
2f7ab126 | 44 | else \ |
9741e07e | 45 | LLVM_OBJCOPY="$(OBJCOPY)" $(PAHOLE) -J $(PAHOLE_FLAGS) --btf_base vmlinux $@; \ |
0e32dfc8 | 46 | $(RESOLVE_BTFIDS) -b vmlinux $@; \ |
e732b538 | 47 | fi; |
5f9ae91f AN |
48 | |
49 | # Same as newer-prereqs, but allows to exclude specified extra dependencies | |
50 | newer_prereqs_except = $(filter-out $(PHONY) $(1),$?) | |
51 | ||
52 | # Same as if_changed, but allows to exclude specified extra dependencies | |
53 | if_changed_except = $(if $(call newer_prereqs_except,$(2))$(cmd-check), \ | |
54 | $(cmd); \ | |
92215e7a | 55 | printf '%s\n' 'savedcmd_$@ := $(make-cmd)' > $(dot-target).cmd, @:) |
5f9ae91f AN |
56 | |
57 | # Re-generate module BTFs if either module's .ko or vmlinux changed | |
f65a4868 | 58 | %.ko: %.o %.mod.o scripts/module.lds $(and $(CONFIG_DEBUG_INFO_BTF_MODULES),$(KBUILD_BUILTIN),vmlinux) FORCE |
5f9ae91f AN |
59 | +$(call if_changed_except,ld_ko_o,vmlinux) |
60 | ifdef CONFIG_DEBUG_INFO_BTF_MODULES | |
61 | +$(if $(newer-prereqs),$(call cmd,btf_ko)) | |
62 | endif | |
9b9a3f20 | 63 | |
f65a4868 | 64 | targets += $(modules:%.o=%.ko) $(modules:%.o=%.mod.o) |
9b9a3f20 MY |
65 | |
66 | # Add FORCE to the prequisites of a target to force it to be always rebuilt. | |
67 | # --------------------------------------------------------------------------- | |
68 | ||
69 | PHONY += FORCE | |
70 | FORCE: | |
71 | ||
72 | # Read all saved command lines and dependencies for the $(targets) we | |
73 | # may be building above, using $(if_changed{,_dep}). As an | |
74 | # optimization, we don't need to read them if the target does not | |
75 | # exist, we will rebuild anyway in that case. | |
76 | ||
77 | existing-targets := $(wildcard $(sort $(targets))) | |
78 | ||
79 | -include $(foreach f,$(existing-targets),$(dir $(f)).$(notdir $(f)).cmd) | |
80 | ||
81 | .PHONY: $(PHONY) |