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 KASAN_SANITIZE_.vmlinux.export.o := n
22 KCSAN_SANITIZE_.vmlinux.export.o := n
23 GCOV_PROFILE_.vmlinux.export.o := n
24 targets += .vmlinux.export.o
25 vmlinux: .vmlinux.export.o
28 ARCH_POSTLINK := $(wildcard $(srctree)/arch/$(SRCARCH)/Makefile.postlink)
30 # Final link of vmlinux with optional arch pass after final link
32 $< "$(LD)" "$(KBUILD_LDFLAGS)" "$(LDFLAGS_vmlinux)"; \
33 $(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true)
36 vmlinux: scripts/link-vmlinux.sh vmlinux.o $(KBUILD_LDS) FORCE
37 +$(call if_changed_dep,link_vmlinux)
39 # Add FORCE to the prequisites of a target to force it to be always rebuilt.
40 # ---------------------------------------------------------------------------
45 # Read all saved command lines and dependencies for the $(targets) we
46 # may be building above, using $(if_changed{,_dep}). As an
47 # optimization, we don't need to read them if the target does not
48 # exist, we will rebuild anyway in that case.
50 existing-targets := $(wildcard $(sort $(targets)))
52 -include $(foreach f,$(existing-targets),$(dir $(f)).$(notdir $(f)).cmd)