kernel/scripts/Makefile.modpost

1 # SPDX-License-Identifier: GPL-2.0
22 #     - Kernel release
23 #     - SMP is CONFIG_SMP
24 #     - PREEMPT is CONFIG_PREEMPT[_RT]
25 #     - GCC Version
27 #     - Module version (MODULE_VERSION)
28 #     - Module alias'es (MODULE_ALIAS)
29 #     - Module license (MODULE_LICENSE)
30 #     - See include/linux/module.h for more details
49 mixed-build-prefix = $(if $(KBUILD_MIXED_TREE),$(KBUILD_MIXED_TREE)/)
52 	$(if $(CONFIG_MODVERSIONS),-m)							\
53 	$(if $(CONFIG_MODULE_SRCVERSION_ALL),-a)					\
54 	$(if $(CONFIG_SECTION_MISMATCH_WARN_ONLY),,-E)					\
55 	$(if $(KBUILD_MODPOST_WARN),-w) \
56 	-o $@
72 input-symdump := $(mixed-build-prefix)vmlinux.symvers
73 output-symdump := modules-only.symvers
76 quiet_cmd_cat = GEN     $@
77       cmd_cat = cat $(real-prereqs) > $@
79 ifneq ($(wildcard $(mixed-build-prefix)vmlinux.symvers),)
82 Module.symvers: $(mixed-build-prefix)vmlinux.symvers modules-only.symvers FORCE
91 # set src + obj - they may be used in the modules's Makefile
99 MODPOST += -e
101 input-symdump := Module.symvers $(KBUILD_EXTRA_SYMBOLS)
102 output-symdump := $(KBUILD_EXTMOD)/Module.symvers
121 	sed -n 's/.*-\(\(g\|hg\)[a-fA-F0-9]\+\(-dirty\)\?\|svn[0-9]\+\).*/\1/p')
123 MODPOST += -v $(module_scmversion)
127 # modpost options for modules (both in-kernel and external)
129 	$(addprefix -i ,$(wildcard $(input-symdump))) \
130 	$(if $(KBUILD_NSDEPS),-d $(MODULES_NSDEPS)) \
131 	$(if $(CONFIG_MODULE_ALLOW_MISSING_NAMESPACE_IMPORTS)$(KBUILD_NSDEPS),-N)
133 # 'make -i -k' ignores compile errors, and builds as many modules as possible.
134 ifneq ($(findstring i,$(filter-out --%,$(MAKEFLAGS))),)
135 MODPOST += -n
140 $(input-symdump):
147 prelink-ext := .lto
151 	$(LD) $(ld_flags) -r -o $@					\
152 		$(shell [ -s $(@:.lto.o=.o.symversions) ] &&		\
153 			echo -T $(@:.lto.o=.o.symversions))		\
154 		--whole-archive $^
165       cmd_modpost = sed 's/\.ko$$/$(prelink-ext)\.o/' $< | $(MODPOST) -T -
167 $(output-symdump): $(MODORDER) $(input-symdump) $(modules:.ko=$(prelink-ext).o) FORCE
170 targets += $(output-symdump)
172 __modpost: $(output-symdump)
174 	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modfinal
180 existing-targets := $(wildcard $(sort $(targets)))
182 -include $(foreach f,$(existing-targets),$(dir $(f)).$(notdir $(f)).cmd)