1 # SPDX-License-Identifier: GPL-2.0-only
6 include include/config/auto.conf
7 include $(srctree)/scripts/Kbuild.include
10 include $(srctree)/scripts/Makefile.lib
14 quiet_cmd_cc_o_c = CC $@
15 cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $<
18 $(call if_changed_dep,cc_o_c)
21 targets += .vmlinux.export.o
22 vmlinux: .vmlinux.export.o
25 ifdef CONFIG_ARCH_WANTS_PRE_LINK_VMLINUX
26 vmlinux: arch/$(SRCARCH)/tools/vmlinux.arch.o
28 arch/$(SRCARCH)/tools/vmlinux.arch.o: vmlinux.o FORCE
29 $(Q)$(MAKE) $(build)=arch/$(SRCARCH)/tools $@
32 ARCH_POSTLINK := $(wildcard $(srctree)/arch/$(SRCARCH)/Makefile.postlink)
34 # Final link of vmlinux with optional arch pass after final link
36 $< "$(LD)" "$(KBUILD_LDFLAGS)" "$(LDFLAGS_vmlinux)"; \
37 $(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true)
40 vmlinux: scripts/link-vmlinux.sh vmlinux.o $(KBUILD_LDS) FORCE
41 +$(call if_changed_dep,link_vmlinux)
43 # module.builtin.ranges
44 # ---------------------------------------------------------------------------
45 ifdef CONFIG_BUILTIN_MODULE_RANGES
46 __default: modules.builtin.ranges
48 quiet_cmd_modules_builtin_ranges = GEN $@
49 cmd_modules_builtin_ranges = gawk -f $(real-prereqs) > $@
51 targets += modules.builtin.ranges
52 modules.builtin.ranges: $(srctree)/scripts/generate_builtin_ranges.awk \
53 modules.builtin vmlinux.map vmlinux.o.map FORCE
54 $(call if_changed,modules_builtin_ranges)
61 # Add FORCE to the prerequisites of a target to force it to be always rebuilt.
62 # ---------------------------------------------------------------------------
67 # Read all saved command lines and dependencies for the $(targets) we
68 # may be building above, using $(if_changed{,_dep}). As an
69 # optimization, we don't need to read them if the target does not
70 # exist, we will rebuild anyway in that case.
72 existing-targets := $(wildcard $(sort $(targets)))
74 -include $(foreach f,$(existing-targets),$(dir $(f)).$(notdir $(f)).cmd)