scripts/Makefile.vmlinux

   1 # SPDX-License-Identifier: GPL-2.0-only
   2
   3 PHONY := __default
   4 __default: vmlinux
   5
   6 include include/config/auto.conf
   7 include $(srctree)/scripts/Kbuild.include
   8
   9 # for c_flags
  10 include $(srctree)/scripts/Makefile.lib
  11
  12 targets :=
  13
  14 quiet_cmd_cc_o_c = CC      $@
  15       cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $<
  16
  17 %.o: %.c FORCE
  18         $(call if_changed_dep,cc_o_c)
  19
  20 ifdef CONFIG_MODULES
  21 KASAN_SANITIZE_.vmlinux.export.o := n
  22 GCOV_PROFILE_.vmlinux.export.o := n
  23 targets += .vmlinux.export.o
  24 vmlinux: .vmlinux.export.o
  25 endif
  26
  27 ARCH_POSTLINK := $(wildcard $(srctree)/arch/$(SRCARCH)/Makefile.postlink)
  28
  29 # Final link of vmlinux with optional arch pass after final link
  30 cmd_link_vmlinux =                                                      \
  31         $< "$(LD)" "$(KBUILD_LDFLAGS)" "$(LDFLAGS_vmlinux)";            \
  32         $(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true)
  33
  34 targets += vmlinux
  35 vmlinux: scripts/link-vmlinux.sh vmlinux.o $(KBUILD_LDS) FORCE
  36         +$(call if_changed_dep,link_vmlinux)
  37
  38 # Add FORCE to the prequisites of a target to force it to be always rebuilt.
  39 # ---------------------------------------------------------------------------
  40
  41 PHONY += FORCE
  42 FORCE:
  43
  44 # Read all saved command lines and dependencies for the $(targets) we
  45 # may be building above, using $(if_changed{,_dep}). As an
  46 # optimization, we don't need to read them if the target does not
  47 # exist, we will rebuild anyway in that case.
  48
  49 existing-targets := $(wildcard $(sort $(targets)))
  50
  51 -include $(foreach f,$(existing-targets),$(dir $(f)).$(notdir $(f)).cmd)
  52
  53 .PHONY: $(PHONY)