# SPDX-License-Identifier: GPL-2.0-only PHONY := __default __default: vmlinux include include/config/auto.conf include $(srctree)/scripts/Kbuild.include include $(srctree)/scripts/Makefile.lib targets := %.o: %.c FORCE $(call if_changed_rule,cc_o_c) %.o: %.S FORCE $(call if_changed_rule,as_o_S) # Built-in dtb # --------------------------------------------------------------------------- quiet_cmd_wrap_dtbs = WRAP $@ cmd_wrap_dtbs = { \ echo '\#include <asm-generic/vmlinux.lds.h>'; \ echo '.section .dtb.init.rodata,"a"'; \ while read dtb; do \ symbase=__dtb_$$(basename -s .dtb "$${dtb}" | tr - _); \ echo '.balign STRUCT_ALIGNMENT'; \ echo ".global $${symbase}_begin"; \ echo "$${symbase}_begin:"; \ echo '.incbin "'$$dtb'" '; \ echo ".global $${symbase}_end"; \ echo "$${symbase}_end:"; \ done < $<; \ } > $@ .builtin-dtbs.S: .builtin-dtbs-list FORCE $(call if_changed,wrap_dtbs) quiet_cmd_gen_dtbs_list = GEN $@ cmd_gen_dtbs_list = \ $(if $(CONFIG_BUILTIN_DTB_NAME), echo "arch/$(SRCARCH)/boot/dts/$(CONFIG_BUILTIN_DTB_NAME).dtb",:) > $@ .builtin-dtbs-list: arch/$(SRCARCH)/boot/dts/dtbs-list FORCE $(call if_changed,$(if $(CONFIG_BUILTIN_DTB_ALL),copy,gen_dtbs_list)) targets += .builtin-dtbs-list ifdef CONFIG_GENERIC_BUILTIN_DTB targets += .builtin-dtbs.S .builtin-dtbs.o vmlinux.unstripped: .builtin-dtbs.o endif # vmlinux.unstripped # --------------------------------------------------------------------------- ifdef CONFIG_ARCH_WANTS_PRE_LINK_VMLINUX vmlinux.unstripped: arch/$(SRCARCH)/tools/vmlinux.arch.o arch/$(SRCARCH)/tools/vmlinux.arch.o: vmlinux.o FORCE $(Q)$(MAKE) $(build)=arch/$(SRCARCH)/tools $@ endif ARCH_POSTLINK := $(wildcard $(srctree)/arch/$(SRCARCH)/Makefile.postlink) # Final link of vmlinux with optional arch pass after final link cmd_link_vmlinux = \ $< "$(LD)" "$(KBUILD_LDFLAGS)" "$(LDFLAGS_vmlinux)" "$@"; \ $(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true) targets += vmlinux.unstripped .vmlinux.export.o vmlinux.unstripped: scripts/link-vmlinux.sh vmlinux.o .vmlinux.export.o $(KBUILD_LDS) FORCE +$(call if_changed_dep,link_vmlinux) ifdef CONFIG_DEBUG_INFO_BTF vmlinux.unstripped: $(RESOLVE_BTFIDS) endif ifdef CONFIG_BUILDTIME_TABLE_SORT vmlinux.unstripped: scripts/sorttable endif # vmlinux # --------------------------------------------------------------------------- remove-section-y := .modinfo remove-section-$(CONFIG_ARCH_VMLINUX_NEEDS_RELOCS) += '.rel*' remove-symbols := -w --strip-symbol='__mod_device_table__*' # To avoid warnings: "empty loadable segment detected at ..." from GNU objcopy, # it is necessary to remove the PT_LOAD flag from the segment. quiet_cmd_strip_relocs = OBJCOPY $@ cmd_strip_relocs = $(OBJCOPY) $(patsubst %,--set-section-flags %=noload,$(remove-section-y)) $< $@; \ $(OBJCOPY) $(addprefix --remove-section=,$(remove-section-y)) $(remove-symbols) $@ targets += vmlinux vmlinux: vmlinux.unstripped FORCE $(call if_changed,strip_relocs) # modules.builtin.modinfo # --------------------------------------------------------------------------- OBJCOPYFLAGS_modules.builtin.modinfo := -j .modinfo -O binary targets += modules.builtin.modinfo modules.builtin.modinfo: vmlinux.unstripped FORCE $(call if_changed,objcopy) # modules.builtin # --------------------------------------------------------------------------- __default: modules.builtin # The second line aids cases where multiple modules share the same object. quiet_cmd_modules_builtin = GEN $@ cmd_modules_builtin = \ tr '\0' '\n' < $< | \ sed -n 's/^[[:alnum:]:_]*\.file=//p' | \ tr ' ' '\n' | uniq | sed -e 's:^:kernel/:' -e 's/$$/.ko/' > $@ targets += modules.builtin modules.builtin: modules.builtin.modinfo FORCE $(call if_changed,modules_builtin) # modules.builtin.ranges # --------------------------------------------------------------------------- ifdef CONFIG_BUILTIN_MODULE_RANGES __default: modules.builtin.ranges quiet_cmd_modules_builtin_ranges = GEN $@ cmd_modules_builtin_ranges = gawk -f $(real-prereqs) > $@ targets += modules.builtin.ranges modules.builtin.ranges: $(srctree)/scripts/generate_builtin_ranges.awk \ modules.builtin vmlinux.map vmlinux.o.map FORCE $(call if_changed,modules_builtin_ranges) vmlinux.map: vmlinux.unstripped @: endif # Add FORCE to the prerequisites of a target to force it to be always rebuilt. # --------------------------------------------------------------------------- PHONY += FORCE FORCE: # Read all saved command lines and dependencies for the $(targets) we # may be building above, using $(if_changed{,_dep}). As an # optimization, we don't need to read them if the target does not # exist, we will rebuild anyway in that case. existing-targets := $(wildcard $(sort $(targets))) -include $(foreach f,$(existing-targets),$(dir $(f)).$(notdir $(f)).cmd) .PHONY: $(PHONY)