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 include $(srctree)/scripts/Makefile.lib
   9
  10 targets :=
  11
  12 ifdef CONFIG_ARCH_VMLINUX_NEEDS_RELOCS
  13 vmlinux-final := vmlinux.unstripped
  14
  15 quiet_cmd_strip_relocs = RSTRIP  $@
  16       cmd_strip_relocs = $(OBJCOPY) --remove-section='.rel*' --remove-section=!'.rel*.dyn' $< $@
  17
  18 vmlinux: $(vmlinux-final) FORCE
  19         $(call if_changed,strip_relocs)
  20
  21 targets += vmlinux
  22 else
  23 vmlinux-final := vmlinux
  24 endif
  25
  26 %.o: %.c FORCE
  27         $(call if_changed_rule,cc_o_c)
  28
  29 %.o: %.S FORCE
  30         $(call if_changed_rule,as_o_S)
  31
  32 # Built-in dtb
  33 # ---------------------------------------------------------------------------
  34
  35 quiet_cmd_wrap_dtbs = WRAP    $@
  36       cmd_wrap_dtbs = {                                                 \
  37         echo '\#include <asm-generic/vmlinux.lds.h>';                   \
  38         echo '.section .dtb.init.rodata,"a"';                           \
  39         while read dtb; do                                              \
  40                 symbase=__dtb_$$(basename -s .dtb "$${dtb}" | tr - _);  \
  41                 echo '.balign STRUCT_ALIGNMENT';                        \
  42                 echo ".global $${symbase}_begin";                       \
  43                 echo "$${symbase}_begin:";                              \
  44                 echo '.incbin "'$$dtb'" ';                              \
  45                 echo ".global $${symbase}_end";                         \
  46                 echo "$${symbase}_end:";                                \
  47         done < $<;                                                      \
  48         } > $@
  49
  50 .builtin-dtbs.S: .builtin-dtbs-list FORCE
  51         $(call if_changed,wrap_dtbs)
  52
  53 quiet_cmd_gen_dtbs_list = GEN     $@
  54       cmd_gen_dtbs_list = \
  55         $(if $(CONFIG_BUILTIN_DTB_NAME), echo "arch/$(SRCARCH)/boot/dts/$(CONFIG_BUILTIN_DTB_NAME).dtb",:) > $@
  56
  57 .builtin-dtbs-list: arch/$(SRCARCH)/boot/dts/dtbs-list FORCE
  58         $(call if_changed,$(if $(CONFIG_BUILTIN_DTB_ALL),copy,gen_dtbs_list))
  59
  60 targets += .builtin-dtbs-list
  61
  62 ifdef CONFIG_GENERIC_BUILTIN_DTB
  63 targets += .builtin-dtbs.S .builtin-dtbs.o
  64 $(vmlinux-final): .builtin-dtbs.o
  65 endif
  66
  67 # vmlinux
  68 # ---------------------------------------------------------------------------
  69
  70 ifdef CONFIG_MODULES
  71 targets += .vmlinux.export.o
  72 $(vmlinux-final): .vmlinux.export.o
  73 endif
  74
  75 ifdef CONFIG_ARCH_WANTS_PRE_LINK_VMLINUX
  76 $(vmlinux-final): arch/$(SRCARCH)/tools/vmlinux.arch.o
  77
  78 arch/$(SRCARCH)/tools/vmlinux.arch.o: vmlinux.o FORCE
  79         $(Q)$(MAKE) $(build)=arch/$(SRCARCH)/tools $@
  80 endif
  81
  82 ARCH_POSTLINK := $(wildcard $(srctree)/arch/$(SRCARCH)/Makefile.postlink)
  83
  84 # Final link of vmlinux with optional arch pass after final link
  85 cmd_link_vmlinux =                                                      \
  86         $< "$(LD)" "$(KBUILD_LDFLAGS)" "$(LDFLAGS_vmlinux)" "$@";       \
  87         $(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true)
  88
  89 targets += $(vmlinux-final)
  90 $(vmlinux-final): scripts/link-vmlinux.sh vmlinux.o $(KBUILD_LDS) FORCE
  91         +$(call if_changed_dep,link_vmlinux)
  92 ifdef CONFIG_DEBUG_INFO_BTF
  93 $(vmlinux-final): $(RESOLVE_BTFIDS)
  94 endif
  95
  96 ifdef CONFIG_BUILDTIME_TABLE_SORT
  97 $(vmlinux-final): scripts/sorttable
  98 endif
  99
 100 # modules.builtin.ranges
 101 # ---------------------------------------------------------------------------
 102 ifdef CONFIG_BUILTIN_MODULE_RANGES
 103 __default: modules.builtin.ranges
 104
 105 quiet_cmd_modules_builtin_ranges = GEN     $@
 106       cmd_modules_builtin_ranges = gawk -f $(real-prereqs) > $@
 107
 108 targets += modules.builtin.ranges
 109 modules.builtin.ranges: $(srctree)/scripts/generate_builtin_ranges.awk \
 110                         modules.builtin vmlinux.map vmlinux.o.map FORCE
 111         $(call if_changed,modules_builtin_ranges)
 112
 113 vmlinux.map: $(vmlinux-final)
 114         @:
 115
 116 endif
 117
 118 # Add FORCE to the prerequisites of a target to force it to be always rebuilt.
 119 # ---------------------------------------------------------------------------
 120
 121 PHONY += FORCE
 122 FORCE:
 123
 124 # Read all saved command lines and dependencies for the $(targets) we
 125 # may be building above, using $(if_changed{,_dep}). As an
 126 # optimization, we don't need to read them if the target does not
 127 # exist, we will rebuild anyway in that case.
 128
 129 existing-targets := $(wildcard $(sort $(targets)))
 130
 131 -include $(foreach f,$(existing-targets),$(dir $(f)).$(notdir $(f)).cmd)
 132
 133 .PHONY: $(PHONY)