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