Greg Kroah-Hartman | b244131 | 2017-11-01 15:07:57 +0100 | [diff] [blame] | 1 | # SPDX-License-Identifier: GPL-2.0 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | # ========================================================================== |
| 3 | # Building |
| 4 | # ========================================================================== |
| 5 | |
| 6 | src := $(obj) |
| 7 | |
Masahiro Yamada | cc306ab | 2022-09-06 15:13:06 +0900 | [diff] [blame] | 8 | PHONY := $(obj)/ |
| 9 | $(obj)/: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 10 | |
Sam Ravnborg | d72e5ed | 2007-05-28 22:47:48 +0200 | [diff] [blame] | 11 | # Init all relevant variables used in kbuild files so |
| 12 | # 1) they have correct type |
| 13 | # 2) they do not inherit any value from the environment |
| 14 | obj-y := |
| 15 | obj-m := |
| 16 | lib-y := |
| 17 | lib-m := |
Masahiro Yamada | 5f2fb52 | 2020-02-02 01:49:24 +0900 | [diff] [blame] | 18 | always-y := |
| 19 | always-m := |
Sam Ravnborg | d72e5ed | 2007-05-28 22:47:48 +0200 | [diff] [blame] | 20 | targets := |
| 21 | subdir-y := |
| 22 | subdir-m := |
| 23 | EXTRA_AFLAGS := |
| 24 | EXTRA_CFLAGS := |
| 25 | EXTRA_CPPFLAGS := |
| 26 | EXTRA_LDFLAGS := |
Sam Ravnborg | f77bf01 | 2007-10-15 22:25:06 +0200 | [diff] [blame] | 27 | asflags-y := |
| 28 | ccflags-y := |
Miguel Ojeda | 2f7ab12 | 2021-07-03 16:42:57 +0200 | [diff] [blame] | 29 | rustflags-y := |
Sam Ravnborg | f77bf01 | 2007-10-15 22:25:06 +0200 | [diff] [blame] | 30 | cppflags-y := |
| 31 | ldflags-y := |
Sam Ravnborg | d72e5ed | 2007-05-28 22:47:48 +0200 | [diff] [blame] | 32 | |
Sam Ravnborg | 720097d | 2009-04-19 11:04:26 +0200 | [diff] [blame] | 33 | subdir-asflags-y := |
| 34 | subdir-ccflags-y := |
| 35 | |
Robert P. J. Day | 3156fd0 | 2008-02-18 04:48:20 -0500 | [diff] [blame] | 36 | # Read auto.conf if it exists, otherwise ignore |
Roman Zippel | c955cca | 2006-06-08 22:12:39 -0700 | [diff] [blame] | 37 | -include include/config/auto.conf |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | |
Masahiro Yamada | 3204a7f | 2021-02-28 15:10:26 +0900 | [diff] [blame] | 39 | include $(srctree)/scripts/Kbuild.include |
Masahiro Yamada | 57fd251 | 2021-02-28 15:10:27 +0900 | [diff] [blame] | 40 | include $(srctree)/scripts/Makefile.compiler |
Masahiro Yamada | a2430b2 | 2022-11-19 04:15:50 +0900 | [diff] [blame] | 41 | include $(kbuild-file) |
Masahiro Yamada | 3204a7f | 2021-02-28 15:10:26 +0900 | [diff] [blame] | 42 | include $(srctree)/scripts/Makefile.lib |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 43 | |
Masahiro Yamada | 85569d1 | 2020-07-29 12:15:37 +0900 | [diff] [blame] | 44 | # Do not include hostprogs rules unless needed. |
| 45 | # $(sort ...) is used here to remove duplicated words and excessive spaces. |
| 46 | hostprogs := $(sort $(hostprogs)) |
Masahiro Yamada | 42640b13 | 2020-07-29 12:15:36 +0900 | [diff] [blame] | 47 | ifneq ($(hostprogs),) |
Masahiro Yamada | 3204a7f | 2021-02-28 15:10:26 +0900 | [diff] [blame] | 48 | include $(srctree)/scripts/Makefile.host |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | endif |
| 50 | |
Masahiro Yamada | 7f3a59d | 2020-04-29 12:45:14 +0900 | [diff] [blame] | 51 | # Do not include userprogs rules unless needed. |
Masahiro Yamada | 85569d1 | 2020-07-29 12:15:37 +0900 | [diff] [blame] | 52 | # $(sort ...) is used here to remove duplicated words and excessive spaces. |
Masahiro Yamada | 7f3a59d | 2020-04-29 12:45:14 +0900 | [diff] [blame] | 53 | userprogs := $(sort $(userprogs)) |
| 54 | ifneq ($(userprogs),) |
Masahiro Yamada | 3204a7f | 2021-02-28 15:10:26 +0900 | [diff] [blame] | 55 | include $(srctree)/scripts/Makefile.userprogs |
Masahiro Yamada | 7f3a59d | 2020-04-29 12:45:14 +0900 | [diff] [blame] | 56 | endif |
| 57 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | ifndef obj |
| 59 | $(warning kbuild: Makefile.build is included improperly) |
| 60 | endif |
| 61 | |
Masahiro Yamada | 394053f | 2019-08-15 00:19:18 +0900 | [diff] [blame] | 62 | ifeq ($(need-modorder),) |
Masahiro Yamada | c07d8d47 | 2019-08-08 20:21:11 +0900 | [diff] [blame] | 63 | ifneq ($(obj-m),) |
| 64 | $(warning $(patsubst %.o,'%.ko',$(obj-m)) will not be built even though obj-m is specified.) |
| 65 | $(warning You cannot use subdir-y/m to visit a module Makefile. Use obj-y/m instead.) |
| 66 | endif |
| 67 | endif |
| 68 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 69 | # =========================================================================== |
| 70 | |
Masahiro Yamada | 454753d | 2020-05-22 11:00:02 +0900 | [diff] [blame] | 71 | # subdir-builtin and subdir-modorder may contain duplications. Use $(sort ...) |
Masahiro Yamada | aaa385b | 2020-05-22 11:00:01 +0900 | [diff] [blame] | 72 | subdir-builtin := $(sort $(filter %/built-in.a, $(real-obj-y))) |
Masahiro Yamada | b2c8855 | 2020-06-01 14:57:00 +0900 | [diff] [blame] | 73 | subdir-modorder := $(sort $(filter %/modules.order, $(obj-m))) |
Masahiro Yamada | 6ba3bcb | 2020-05-22 11:00:00 +0900 | [diff] [blame] | 74 | |
Masahiro Yamada | f3908ab | 2020-06-01 14:56:56 +0900 | [diff] [blame] | 75 | targets-for-builtin := $(extra-y) |
| 76 | |
Masahiro Yamada | a4954fd | 2014-09-09 19:26:21 +0900 | [diff] [blame] | 77 | ifneq ($(strip $(lib-y) $(lib-m) $(lib-)),) |
Masahiro Yamada | f3908ab | 2020-06-01 14:56:56 +0900 | [diff] [blame] | 78 | targets-for-builtin += $(obj)/lib.a |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | endif |
| 80 | |
Masahiro Yamada | 56d5893 | 2019-12-19 01:04:28 +0900 | [diff] [blame] | 81 | ifdef need-builtin |
Masahiro Yamada | f3908ab | 2020-06-01 14:56:56 +0900 | [diff] [blame] | 82 | targets-for-builtin += $(obj)/built-in.a |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | endif |
| 84 | |
Masahiro Yamada | fc93a4c | 2022-04-07 00:30:22 +0900 | [diff] [blame] | 85 | targets-for-modules := $(foreach x, o mod $(if $(CONFIG_TRIM_UNUSED_KSYMS), usyms), \ |
Masahiro Yamada | 9413e76 | 2022-04-07 00:30:20 +0900 | [diff] [blame] | 86 | $(patsubst %.o, %.$x, $(filter %.o, $(obj-m)))) |
Masahiro Yamada | f3908ab | 2020-06-01 14:56:56 +0900 | [diff] [blame] | 87 | |
Masahiro Yamada | b480fec | 2020-05-22 10:59:59 +0900 | [diff] [blame] | 88 | ifdef need-modorder |
Masahiro Yamada | f3908ab | 2020-06-01 14:56:56 +0900 | [diff] [blame] | 89 | targets-for-modules += $(obj)/modules.order |
Masahiro Yamada | 1d8001e | 2019-02-14 12:05:15 +0900 | [diff] [blame] | 90 | endif |
Tejun Heo | 551559e | 2007-12-07 21:04:30 +0900 | [diff] [blame] | 91 | |
Masahiro Yamada | f3908ab | 2020-06-01 14:56:56 +0900 | [diff] [blame] | 92 | targets += $(targets-for-builtin) $(targets-for-modules) |
Masahiro Yamada | 9f69a49 | 2019-07-17 15:18:00 +0900 | [diff] [blame] | 93 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 94 | # Linus' kernel sanity checking tool |
Masahiro Yamada | 7d0ea25 | 2018-10-10 00:05:39 +0900 | [diff] [blame] | 95 | ifeq ($(KBUILD_CHECKSRC),1) |
| 96 | quiet_cmd_checksrc = CHECK $< |
Masahiro Yamada | e5d2891 | 2018-11-30 10:05:28 +0900 | [diff] [blame] | 97 | cmd_checksrc = $(CHECK) $(CHECKFLAGS) $(c_flags) $< |
Masahiro Yamada | 7d0ea25 | 2018-10-10 00:05:39 +0900 | [diff] [blame] | 98 | else ifeq ($(KBUILD_CHECKSRC),2) |
| 99 | quiet_cmd_force_checksrc = CHECK $< |
Masahiro Yamada | e5d2891 | 2018-11-30 10:05:28 +0900 | [diff] [blame] | 100 | cmd_force_checksrc = $(CHECK) $(CHECKFLAGS) $(c_flags) $< |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 101 | endif |
| 102 | |
Masahiro Yamada | e27128d | 2019-09-01 01:25:55 +0900 | [diff] [blame] | 103 | ifneq ($(KBUILD_EXTRA_WARN),) |
Masahiro Yamada | e5d2891 | 2018-11-30 10:05:28 +0900 | [diff] [blame] | 104 | cmd_checkdoc = $(srctree)/scripts/kernel-doc -none $< |
Matthew Wilcox | 3a025e1 | 2017-11-20 10:40:40 -0800 | [diff] [blame] | 105 | endif |
| 106 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 107 | # Compile C sources (.c) |
| 108 | # --------------------------------------------------------------------------- |
| 109 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 110 | quiet_cmd_cc_s_c = CC $(quiet_modtag) $@ |
Sami Tolvanen | dc5723b | 2020-12-11 10:46:19 -0800 | [diff] [blame] | 111 | cmd_cc_s_c = $(CC) $(filter-out $(DEBUG_CFLAGS) $(CC_FLAGS_LTO), $(c_flags)) -fverbose-asm -S -o $@ $< |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 112 | |
Sam Ravnborg | 767e581 | 2007-05-06 09:23:45 +0200 | [diff] [blame] | 113 | $(obj)/%.s: $(src)/%.c FORCE |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 114 | $(call if_changed_dep,cc_s_c) |
| 115 | |
Masahiro Yamada | 23d4384 | 2016-04-08 11:24:47 +0900 | [diff] [blame] | 116 | quiet_cmd_cpp_i_c = CPP $(quiet_modtag) $@ |
| 117 | cmd_cpp_i_c = $(CPP) $(c_flags) -o $@ $< |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 118 | |
Sam Ravnborg | 767e581 | 2007-05-06 09:23:45 +0200 | [diff] [blame] | 119 | $(obj)/%.i: $(src)/%.c FORCE |
Masahiro Yamada | 23d4384 | 2016-04-08 11:24:47 +0900 | [diff] [blame] | 120 | $(call if_changed_dep,cpp_i_c) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 121 | |
Masahiro Yamada | f43e31d5 | 2022-04-05 20:33:49 +0900 | [diff] [blame] | 122 | genksyms = scripts/genksyms/genksyms \ |
| 123 | $(if $(1), -T $(2)) \ |
Masahiro Yamada | f43e31d5 | 2022-04-05 20:33:49 +0900 | [diff] [blame] | 124 | $(if $(KBUILD_PRESERVE), -p) \ |
| 125 | -r $(or $(wildcard $(2:.symtypes=.symref)), /dev/null) |
| 126 | |
Nicholas Piggin | 4efca4e | 2016-11-01 12:46:19 +1100 | [diff] [blame] | 127 | # These mirror gensymtypes_S and co below, keep them in synch. |
Masahiro Yamada | f43e31d5 | 2022-04-05 20:33:49 +0900 | [diff] [blame] | 128 | cmd_gensymtypes_c = $(CPP) -D__GENKSYMS__ $(c_flags) $< | $(genksyms) |
Sam Ravnborg | 37a8d9f | 2008-12-19 21:38:09 +0100 | [diff] [blame] | 129 | |
Andreas Gruenbacher | 15fde67 | 2006-05-09 20:37:30 +0200 | [diff] [blame] | 130 | quiet_cmd_cc_symtypes_c = SYM $(quiet_modtag) $@ |
Masahiro Yamada | dc6dc3e | 2022-04-05 20:33:50 +0900 | [diff] [blame] | 131 | cmd_cc_symtypes_c = $(call cmd_gensymtypes_c,true,$@) >/dev/null |
Andreas Gruenbacher | 15fde67 | 2006-05-09 20:37:30 +0200 | [diff] [blame] | 132 | |
Sam Ravnborg | 767e581 | 2007-05-06 09:23:45 +0200 | [diff] [blame] | 133 | $(obj)/%.symtypes : $(src)/%.c FORCE |
Andreas Gruenbacher | 64e6c1e | 2008-12-01 14:21:01 -0800 | [diff] [blame] | 134 | $(call cmd,cc_symtypes_c) |
Andreas Gruenbacher | 15fde67 | 2006-05-09 20:37:30 +0200 | [diff] [blame] | 135 | |
VinÃcius Tinti | 433db3e | 2017-04-24 13:04:58 -0700 | [diff] [blame] | 136 | # LLVM assembly |
| 137 | # Generate .ll files from .c |
| 138 | quiet_cmd_cc_ll_c = CC $(quiet_modtag) $@ |
Nick Desaulniers | c67a85b | 2022-10-14 09:53:02 -0700 | [diff] [blame] | 139 | cmd_cc_ll_c = $(CC) $(c_flags) -emit-llvm -S -fno-discard-value-names -o $@ $< |
VinÃcius Tinti | 433db3e | 2017-04-24 13:04:58 -0700 | [diff] [blame] | 140 | |
| 141 | $(obj)/%.ll: $(src)/%.c FORCE |
| 142 | $(call if_changed_dep,cc_ll_c) |
| 143 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 144 | # C (.c) files |
| 145 | # The C file is compiled and updated dependency information is generated. |
| 146 | # (See cmd_cc_o_c + relevant part of rule_cc_o_c) |
| 147 | |
Masahiro Yamada | c25e1c5 | 2022-05-27 19:01:49 +0900 | [diff] [blame] | 148 | is-single-obj-m = $(and $(part-of-module),$(filter $@, $(obj-m)),y) |
| 149 | |
| 150 | # When a module consists of a single object, there is no reason to keep LLVM IR. |
| 151 | # Make $(LD) covert LLVM IR to ELF here. |
| 152 | ifdef CONFIG_LTO_CLANG |
| 153 | cmd_ld_single_m = $(if $(is-single-obj-m), ; $(LD) $(ld_flags) -r -o $(tmp-target) $@; mv $(tmp-target) $@) |
| 154 | endif |
| 155 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 156 | quiet_cmd_cc_o_c = CC $(quiet_modtag) $@ |
Masahiro Yamada | c25e1c5 | 2022-05-27 19:01:49 +0900 | [diff] [blame] | 157 | cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< \ |
| 158 | $(cmd_ld_single_m) \ |
| 159 | $(cmd_objtool) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 160 | |
Masahiro Yamada | ee3e46b | 2018-11-30 10:05:25 +0900 | [diff] [blame] | 161 | ifdef CONFIG_MODVERSIONS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 162 | # When module versioning is enabled the following steps are executed: |
Masahiro Yamada | ee3e46b | 2018-11-30 10:05:25 +0900 | [diff] [blame] | 163 | # o compile a <file>.o from <file>.c |
| 164 | # o if <file>.o doesn't contain a __ksymtab version, i.e. does |
| 165 | # not export symbols, it's done. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 166 | # o otherwise, we calculate symbol versions using the good old |
Masahiro Yamada | 7b45371 | 2022-05-13 20:39:22 +0900 | [diff] [blame] | 167 | # genksyms on the preprocessed source and dump them into the .cmd file. |
| 168 | # o modpost will extract versions from that file and create *.c files that will |
| 169 | # be compiled and linked to the kernel and/or modules. |
Nicholas Piggin | 4efca4e | 2016-11-01 12:46:19 +1100 | [diff] [blame] | 170 | |
Masahiro Yamada | 8017ce5 | 2022-04-05 20:33:57 +0900 | [diff] [blame] | 171 | gen_symversions = \ |
Sami Tolvanen | 38e8918 | 2020-12-11 10:46:20 -0800 | [diff] [blame] | 172 | if $(NM) $@ 2>/dev/null | grep -q __ksymtab; then \ |
Masahiro Yamada | 8017ce5 | 2022-04-05 20:33:57 +0900 | [diff] [blame] | 173 | $(call cmd_gensymtypes_$(1),$(KBUILD_SYMTYPES),$(@:.o=.symtypes)) \ |
Masahiro Yamada | 78e9e56 | 2022-05-05 16:22:35 +0900 | [diff] [blame] | 174 | >> $(dot-target).cmd; \ |
Masahiro Yamada | e5d2891 | 2018-11-30 10:05:28 +0900 | [diff] [blame] | 175 | fi |
Masahiro Yamada | 8017ce5 | 2022-04-05 20:33:57 +0900 | [diff] [blame] | 176 | |
| 177 | cmd_gen_symversions_c = $(call gen_symversions,c) |
| 178 | |
Sami Tolvanen | 38e8918 | 2020-12-11 10:46:20 -0800 | [diff] [blame] | 179 | endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 180 | |
Sami Tolvanen | 3b15cdc1 | 2020-12-11 10:46:18 -0800 | [diff] [blame] | 181 | ifdef CONFIG_FTRACE_MCOUNT_USE_RECORDMCOUNT |
Vasily Gorbik | 07d0408 | 2018-08-06 15:17:44 +0200 | [diff] [blame] | 182 | # compiler will not generate __mcount_loc use recordmcount or recordmcount.pl |
Steven Rostedt | 72441cb | 2010-10-13 17:12:30 -0400 | [diff] [blame] | 183 | ifdef BUILD_C_RECORDMCOUNT |
Steven Rostedt | 85356f8 | 2011-04-12 18:59:10 -0400 | [diff] [blame] | 184 | ifeq ("$(origin RECORDMCOUNT_WARN)", "command line") |
| 185 | RECORDMCOUNT_FLAGS = -w |
| 186 | endif |
Steven Rostedt | d7b4d6d | 2010-10-18 14:42:00 -0400 | [diff] [blame] | 187 | # Due to recursion, we must skip empty.o. |
| 188 | # The empty.o file is created in the make process in order to determine |
Cao jin | 312a3d0 | 2017-08-02 10:31:06 +0800 | [diff] [blame] | 189 | # the target endianness and word size. It is made before all other C |
| 190 | # files, including recordmcount. |
Wu Zhangjin | 4567745 | 2010-10-28 00:24:34 +0800 | [diff] [blame] | 191 | sub_cmd_record_mcount = \ |
| 192 | if [ $(@) != "scripts/mod/empty.o" ]; then \ |
Steven Rostedt | 85356f8 | 2011-04-12 18:59:10 -0400 | [diff] [blame] | 193 | $(objtree)/scripts/recordmcount $(RECORDMCOUNT_FLAGS) "$(@)"; \ |
Wu Zhangjin | 4567745 | 2010-10-28 00:24:34 +0800 | [diff] [blame] | 194 | fi; |
Michal Marek | d697182 | 2011-05-17 15:36:46 +0200 | [diff] [blame] | 195 | recordmcount_source := $(srctree)/scripts/recordmcount.c \ |
| 196 | $(srctree)/scripts/recordmcount.h |
Steven Rostedt | 72441cb | 2010-10-13 17:12:30 -0400 | [diff] [blame] | 197 | else |
Masahiro Yamada | 4317ee3 | 2018-11-30 10:05:24 +0900 | [diff] [blame] | 198 | sub_cmd_record_mcount = perl $(srctree)/scripts/recordmcount.pl "$(ARCH)" \ |
Wu Zhangjin | e6299d2 | 2009-11-20 20:34:31 +0800 | [diff] [blame] | 199 | "$(if $(CONFIG_CPU_BIG_ENDIAN),big,little)" \ |
Steven Rostedt | b3acf29 | 2008-10-29 15:30:26 -0400 | [diff] [blame] | 200 | "$(if $(CONFIG_64BIT),64,32)" \ |
Joel Stanley | 5a4630a | 2018-09-17 17:07:54 +0930 | [diff] [blame] | 201 | "$(OBJDUMP)" "$(OBJCOPY)" "$(CC) $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS)" \ |
Masahiro Yamada | d503ac5 | 2018-08-24 08:20:39 +0900 | [diff] [blame] | 202 | "$(LD) $(KBUILD_LDFLAGS)" "$(NM)" "$(RM)" "$(MV)" \ |
Shaohua Li | 18c167f | 2009-01-12 10:00:51 +0800 | [diff] [blame] | 203 | "$(if $(part-of-module),1,0)" "$(@)"; |
Michal Marek | d697182 | 2011-05-17 15:36:46 +0200 | [diff] [blame] | 204 | recordmcount_source := $(srctree)/scripts/recordmcount.pl |
Cao jin | 312a3d0 | 2017-08-02 10:31:06 +0800 | [diff] [blame] | 205 | endif # BUILD_C_RECORDMCOUNT |
Joe Lawrence | 1a49b2f | 2019-03-26 10:50:28 -0400 | [diff] [blame] | 206 | cmd_record_mcount = $(if $(findstring $(strip $(CC_FLAGS_FTRACE)),$(_c_flags)), \ |
| 207 | $(sub_cmd_record_mcount)) |
Sami Tolvanen | 3b15cdc1 | 2020-12-11 10:46:18 -0800 | [diff] [blame] | 208 | endif # CONFIG_FTRACE_MCOUNT_USE_RECORDMCOUNT |
Steven Rostedt | 8da3821 | 2008-08-14 15:45:07 -0400 | [diff] [blame] | 209 | |
Josh Poimboeuf | b9ab5eb | 2016-02-28 22:22:42 -0600 | [diff] [blame] | 210 | # 'OBJECT_FILES_NON_STANDARD := y': skip objtool checking for a directory |
| 211 | # 'OBJECT_FILES_NON_STANDARD_foo.o := 'y': skip objtool checking for a file |
| 212 | # 'OBJECT_FILES_NON_STANDARD_foo.o := 'n': override directory skip for a file |
Masahiro Yamada | 918a6b7 | 2021-08-31 16:39:55 +0900 | [diff] [blame] | 213 | |
Masahiro Yamada | c25e1c5 | 2022-05-27 19:01:49 +0900 | [diff] [blame] | 214 | is-standard-object = $(if $(filter-out y%, $(OBJECT_FILES_NON_STANDARD_$(basetarget).o)$(OBJECT_FILES_NON_STANDARD)n),y) |
Masahiro Yamada | 918a6b7 | 2021-08-31 16:39:55 +0900 | [diff] [blame] | 215 | |
Masahiro Yamada | c25e1c5 | 2022-05-27 19:01:49 +0900 | [diff] [blame] | 216 | $(obj)/%.o: objtool-enabled = $(if $(is-standard-object),$(if $(delay-objtool),$(is-single-obj-m),y)) |
Josh Poimboeuf | b9ab5eb | 2016-02-28 22:22:42 -0600 | [diff] [blame] | 217 | |
Masahiro Yamada | bbda5ec | 2018-11-30 10:05:26 +0900 | [diff] [blame] | 218 | ifdef CONFIG_TRIM_UNUSED_KSYMS |
| 219 | cmd_gen_ksymdeps = \ |
Masahiro Yamada | e5d2891 | 2018-11-30 10:05:28 +0900 | [diff] [blame] | 220 | $(CONFIG_SHELL) $(srctree)/scripts/gen_ksymdeps.sh $@ >> $(dot-target).cmd |
Masahiro Yamada | bbda5ec | 2018-11-30 10:05:26 +0900 | [diff] [blame] | 221 | endif |
| 222 | |
Masahiro Yamada | 31cb50b | 2022-05-27 19:01:51 +0900 | [diff] [blame] | 223 | cmd_check_local_export = $(srctree)/scripts/check-local-export $@ |
| 224 | |
Masahiro Yamada | 598afa0 | 2022-11-19 04:15:51 +0900 | [diff] [blame] | 225 | ifneq ($(findstring 1, $(KBUILD_EXTRA_WARN)),) |
| 226 | cmd_warn_shared_object = $(if $(word 2, $(modname-multi)),$(warning $(kbuild-file): $*.o is added to multiple modules: $(modname-multi))) |
| 227 | endif |
| 228 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 229 | define rule_cc_o_c |
Masahiro Yamada | 3a2429e | 2018-11-30 10:05:27 +0900 | [diff] [blame] | 230 | $(call cmd_and_fixdep,cc_o_c) |
| 231 | $(call cmd,gen_ksymdeps) |
Masahiro Yamada | 31cb50b | 2022-05-27 19:01:51 +0900 | [diff] [blame] | 232 | $(call cmd,check_local_export) |
Luc Van Oostenryck | 0c33f12 | 2020-06-22 17:45:12 +0200 | [diff] [blame] | 233 | $(call cmd,checksrc) |
Masahiro Yamada | 3a2429e | 2018-11-30 10:05:27 +0900 | [diff] [blame] | 234 | $(call cmd,checkdoc) |
Masahiro Yamada | ef62588c | 2021-08-31 16:39:56 +0900 | [diff] [blame] | 235 | $(call cmd,gen_objtooldep) |
Masahiro Yamada | 8017ce5 | 2022-04-05 20:33:57 +0900 | [diff] [blame] | 236 | $(call cmd,gen_symversions_c) |
Masahiro Yamada | 3a2429e | 2018-11-30 10:05:27 +0900 | [diff] [blame] | 237 | $(call cmd,record_mcount) |
Masahiro Yamada | 598afa0 | 2022-11-19 04:15:51 +0900 | [diff] [blame] | 238 | $(call cmd,warn_shared_object) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 239 | endef |
| 240 | |
Josh Poimboeuf | b9ab5eb | 2016-02-28 22:22:42 -0600 | [diff] [blame] | 241 | define rule_as_o_S |
Masahiro Yamada | 3a2429e | 2018-11-30 10:05:27 +0900 | [diff] [blame] | 242 | $(call cmd_and_fixdep,as_o_S) |
| 243 | $(call cmd,gen_ksymdeps) |
Masahiro Yamada | 31cb50b | 2022-05-27 19:01:51 +0900 | [diff] [blame] | 244 | $(call cmd,check_local_export) |
Masahiro Yamada | ef62588c | 2021-08-31 16:39:56 +0900 | [diff] [blame] | 245 | $(call cmd,gen_objtooldep) |
Masahiro Yamada | 7cfa2fc | 2022-04-05 20:33:58 +0900 | [diff] [blame] | 246 | $(call cmd,gen_symversions_S) |
Masahiro Yamada | 598afa0 | 2022-11-19 04:15:51 +0900 | [diff] [blame] | 247 | $(call cmd,warn_shared_object) |
Josh Poimboeuf | b9ab5eb | 2016-02-28 22:22:42 -0600 | [diff] [blame] | 248 | endef |
| 249 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 250 | # Built-in and composite module parts |
Masahiro Yamada | ef62588c | 2021-08-31 16:39:56 +0900 | [diff] [blame] | 251 | $(obj)/%.o: $(src)/%.c $(recordmcount_source) FORCE |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 252 | $(call if_changed_rule,cc_o_c) |
Luc Van Oostenryck | 0c33f12 | 2020-06-22 17:45:12 +0200 | [diff] [blame] | 253 | $(call cmd,force_checksrc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 254 | |
Masahiro Yamada | c6031b1 | 2022-05-27 19:01:53 +0900 | [diff] [blame] | 255 | # To make this rule robust against "Argument list too long" error, |
| 256 | # ensure to add $(obj)/ prefix by a shell command. |
Kevin Locke | 7bf179d | 2022-06-06 20:42:54 -0600 | [diff] [blame] | 257 | cmd_mod = printf '%s\n' $(call real-search, $*.o, .o, -objs -y -m) | \ |
| 258 | $(AWK) '!x[$$0]++ { print("$(obj)/"$$0) }' > $@ |
Masahiro Yamada | 9f69a49 | 2019-07-17 15:18:00 +0900 | [diff] [blame] | 259 | |
Masahiro Yamada | fc93a4c | 2022-04-07 00:30:22 +0900 | [diff] [blame] | 260 | $(obj)/%.mod: FORCE |
Masahiro Yamada | 9f69a49 | 2019-07-17 15:18:00 +0900 | [diff] [blame] | 261 | $(call if_changed,mod) |
| 262 | |
Masahiro Yamada | 9413e76 | 2022-04-07 00:30:20 +0900 | [diff] [blame] | 263 | # List module undefined symbols |
| 264 | cmd_undefined_syms = $(NM) $< | sed -n 's/^ *U //p' > $@ |
| 265 | |
Masahiro Yamada | c25e1c5 | 2022-05-27 19:01:49 +0900 | [diff] [blame] | 266 | $(obj)/%.usyms: $(obj)/%.o FORCE |
Masahiro Yamada | 9413e76 | 2022-04-07 00:30:20 +0900 | [diff] [blame] | 267 | $(call if_changed,undefined_syms) |
| 268 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 269 | quiet_cmd_cc_lst_c = MKLST $@ |
| 270 | cmd_cc_lst_c = $(CC) $(c_flags) -g -c -o $*.o $< && \ |
| 271 | $(CONFIG_SHELL) $(srctree)/scripts/makelst $*.o \ |
| 272 | System.map $(OBJDUMP) > $@ |
| 273 | |
Sam Ravnborg | 767e581 | 2007-05-06 09:23:45 +0200 | [diff] [blame] | 274 | $(obj)/%.lst: $(src)/%.c FORCE |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 275 | $(call if_changed_dep,cc_lst_c) |
| 276 | |
Miguel Ojeda | 2f7ab12 | 2021-07-03 16:42:57 +0200 | [diff] [blame] | 277 | # Compile Rust sources (.rs) |
| 278 | # --------------------------------------------------------------------------- |
| 279 | |
| 280 | rust_allowed_features := core_ffi_c |
| 281 | |
| 282 | rust_common_cmd = \ |
| 283 | RUST_MODFILE=$(modfile) $(RUSTC_OR_CLIPPY) $(rust_flags) \ |
| 284 | -Zallow-features=$(rust_allowed_features) \ |
| 285 | -Zcrate-attr=no_std \ |
| 286 | -Zcrate-attr='feature($(rust_allowed_features))' \ |
| 287 | --extern alloc --extern kernel \ |
Masahiro Yamada | 295d839 | 2023-01-07 18:18:15 +0900 | [diff] [blame] | 288 | --crate-type rlib -L $(objtree)/rust/ \ |
| 289 | --crate-name $(basename $(notdir $@)) \ |
| 290 | --emit=dep-info=$(depfile) |
Miguel Ojeda | 2f7ab12 | 2021-07-03 16:42:57 +0200 | [diff] [blame] | 291 | |
Miguel Ojeda | 2f7ab12 | 2021-07-03 16:42:57 +0200 | [diff] [blame] | 292 | # `--emit=obj`, `--emit=asm` and `--emit=llvm-ir` imply a single codegen unit |
| 293 | # will be used. We explicitly request `-Ccodegen-units=1` in any case, and |
| 294 | # the compiler shows a warning if it is not 1. However, if we ever stop |
| 295 | # requesting it explicitly and we start using some other `--emit` that does not |
| 296 | # imply it (and for which codegen is performed), then we would be out of sync, |
| 297 | # i.e. the outputs we would get for the different single targets (e.g. `.ll`) |
| 298 | # would not match each other. |
| 299 | |
| 300 | quiet_cmd_rustc_o_rs = $(RUSTC_OR_CLIPPY_QUIET) $(quiet_modtag) $@ |
Masahiro Yamada | 2185242 | 2023-01-07 18:18:17 +0900 | [diff] [blame] | 301 | cmd_rustc_o_rs = $(rust_common_cmd) --emit=obj=$@ $< |
Miguel Ojeda | 2f7ab12 | 2021-07-03 16:42:57 +0200 | [diff] [blame] | 302 | |
| 303 | $(obj)/%.o: $(src)/%.rs FORCE |
| 304 | $(call if_changed_dep,rustc_o_rs) |
| 305 | |
| 306 | quiet_cmd_rustc_rsi_rs = $(RUSTC_OR_CLIPPY_QUIET) $(quiet_modtag) $@ |
| 307 | cmd_rustc_rsi_rs = \ |
Masahiro Yamada | 295d839 | 2023-01-07 18:18:15 +0900 | [diff] [blame] | 308 | $(rust_common_cmd) -Zunpretty=expanded $< >$@; \ |
Masahiro Yamada | 2185242 | 2023-01-07 18:18:17 +0900 | [diff] [blame] | 309 | command -v $(RUSTFMT) >/dev/null && $(RUSTFMT) $@ |
Miguel Ojeda | 2f7ab12 | 2021-07-03 16:42:57 +0200 | [diff] [blame] | 310 | |
| 311 | $(obj)/%.rsi: $(src)/%.rs FORCE |
| 312 | $(call if_changed_dep,rustc_rsi_rs) |
| 313 | |
| 314 | quiet_cmd_rustc_s_rs = $(RUSTC_OR_CLIPPY_QUIET) $(quiet_modtag) $@ |
Masahiro Yamada | 2185242 | 2023-01-07 18:18:17 +0900 | [diff] [blame] | 315 | cmd_rustc_s_rs = $(rust_common_cmd) --emit=asm=$@ $< |
Miguel Ojeda | 2f7ab12 | 2021-07-03 16:42:57 +0200 | [diff] [blame] | 316 | |
| 317 | $(obj)/%.s: $(src)/%.rs FORCE |
| 318 | $(call if_changed_dep,rustc_s_rs) |
| 319 | |
| 320 | quiet_cmd_rustc_ll_rs = $(RUSTC_OR_CLIPPY_QUIET) $(quiet_modtag) $@ |
Masahiro Yamada | 2185242 | 2023-01-07 18:18:17 +0900 | [diff] [blame] | 321 | cmd_rustc_ll_rs = $(rust_common_cmd) --emit=llvm-ir=$@ $< |
Miguel Ojeda | 2f7ab12 | 2021-07-03 16:42:57 +0200 | [diff] [blame] | 322 | |
| 323 | $(obj)/%.ll: $(src)/%.rs FORCE |
| 324 | $(call if_changed_dep,rustc_ll_rs) |
| 325 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 326 | # Compile assembler sources (.S) |
| 327 | # --------------------------------------------------------------------------- |
| 328 | |
Nicholas Piggin | 4efca4e | 2016-11-01 12:46:19 +1100 | [diff] [blame] | 329 | # .S file exports must have their C prototypes defined in asm/asm-prototypes.h |
| 330 | # or a file that it includes, in order to get versioned symbols. We build a |
| 331 | # dummy C file that includes asm-prototypes and the EXPORT_SYMBOL lines from |
| 332 | # the .S file (with trailing ';'), and run genksyms on that, to extract vers. |
| 333 | # |
| 334 | # This is convoluted. The .S file must first be preprocessed to run guards and |
| 335 | # expand names, then the resulting exports must be constructed into plain |
| 336 | # EXPORT_SYMBOL(symbol); to build our dummy C file, and that gets preprocessed |
| 337 | # to make the genksyms input. |
| 338 | # |
| 339 | # These mirror gensymtypes_c and co above, keep them in synch. |
| 340 | cmd_gensymtypes_S = \ |
Masahiro Yamada | b79c6aa | 2019-01-17 19:02:44 +0900 | [diff] [blame] | 341 | { echo "\#include <linux/kernel.h>" ; \ |
Nicholas Piggin | 4efca4e | 2016-11-01 12:46:19 +1100 | [diff] [blame] | 342 | echo "\#include <asm/asm-prototypes.h>" ; \ |
| 343 | $(CPP) $(a_flags) $< | \ |
Nicholas Piggin | cc6acc1 | 2016-11-09 15:34:05 +1100 | [diff] [blame] | 344 | grep "\<___EXPORT_SYMBOL\>" | \ |
Masahiro Yamada | b79c6aa | 2019-01-17 19:02:44 +0900 | [diff] [blame] | 345 | sed 's/.*___EXPORT_SYMBOL[[:space:]]*\([a-zA-Z0-9_]*\)[[:space:]]*,.*/EXPORT_SYMBOL(\1);/' ; } | \ |
Masahiro Yamada | f43e31d5 | 2022-04-05 20:33:49 +0900 | [diff] [blame] | 346 | $(CPP) -D__GENKSYMS__ $(c_flags) -xc - | $(genksyms) |
Nicholas Piggin | 4efca4e | 2016-11-01 12:46:19 +1100 | [diff] [blame] | 347 | |
| 348 | quiet_cmd_cc_symtypes_S = SYM $(quiet_modtag) $@ |
Masahiro Yamada | dc6dc3e | 2022-04-05 20:33:50 +0900 | [diff] [blame] | 349 | cmd_cc_symtypes_S = $(call cmd_gensymtypes_S,true,$@) >/dev/null |
Nicholas Piggin | 4efca4e | 2016-11-01 12:46:19 +1100 | [diff] [blame] | 350 | |
| 351 | $(obj)/%.symtypes : $(src)/%.S FORCE |
| 352 | $(call cmd,cc_symtypes_S) |
| 353 | |
| 354 | |
Masahiro Yamada | e0f41e5 | 2016-04-08 11:24:48 +0900 | [diff] [blame] | 355 | quiet_cmd_cpp_s_S = CPP $(quiet_modtag) $@ |
| 356 | cmd_cpp_s_S = $(CPP) $(a_flags) -o $@ $< |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 357 | |
Sam Ravnborg | 767e581 | 2007-05-06 09:23:45 +0200 | [diff] [blame] | 358 | $(obj)/%.s: $(src)/%.S FORCE |
Masahiro Yamada | e0f41e5 | 2016-04-08 11:24:48 +0900 | [diff] [blame] | 359 | $(call if_changed_dep,cpp_s_S) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 360 | |
| 361 | quiet_cmd_as_o_S = AS $(quiet_modtag) $@ |
Masahiro Yamada | 92594d5 | 2021-08-31 16:39:54 +0900 | [diff] [blame] | 362 | cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $< $(cmd_objtool) |
Nicholas Piggin | 4efca4e | 2016-11-01 12:46:19 +1100 | [diff] [blame] | 363 | |
Masahiro Yamada | 2ff2b7e | 2019-08-19 14:54:20 +0900 | [diff] [blame] | 364 | ifdef CONFIG_ASM_MODVERSIONS |
Nicholas Piggin | 4efca4e | 2016-11-01 12:46:19 +1100 | [diff] [blame] | 365 | |
| 366 | # versioning matches the C process described above, with difference that |
| 367 | # we parse asm-prototypes.h C header to get function definitions. |
| 368 | |
Masahiro Yamada | 7cfa2fc | 2022-04-05 20:33:58 +0900 | [diff] [blame] | 369 | cmd_gen_symversions_S = $(call gen_symversions,S) |
| 370 | |
Nicholas Piggin | 4efca4e | 2016-11-01 12:46:19 +1100 | [diff] [blame] | 371 | endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 372 | |
Masahiro Yamada | ef62588c | 2021-08-31 16:39:56 +0900 | [diff] [blame] | 373 | $(obj)/%.o: $(src)/%.S FORCE |
Josh Poimboeuf | b9ab5eb | 2016-02-28 22:22:42 -0600 | [diff] [blame] | 374 | $(call if_changed_rule,as_o_S) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 375 | |
Masahiro Yamada | b2c8855 | 2020-06-01 14:57:00 +0900 | [diff] [blame] | 376 | targets += $(filter-out $(subdir-builtin), $(real-obj-y)) |
| 377 | targets += $(filter-out $(subdir-modorder), $(real-obj-m)) |
Masahiro Yamada | cc306ab | 2022-09-06 15:13:06 +0900 | [diff] [blame] | 378 | targets += $(real-dtb-y) $(lib-y) $(always-y) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 379 | |
| 380 | # Linker scripts preprocessor (.lds.S -> .lds) |
| 381 | # --------------------------------------------------------------------------- |
| 382 | quiet_cmd_cpp_lds_S = LDS $@ |
Linus Torvalds | 5cb0512 | 2017-11-02 14:10:37 -0700 | [diff] [blame] | 383 | cmd_cpp_lds_S = $(CPP) $(cpp_flags) -P -U$(ARCH) \ |
Tim Abbott | 42f29a2 | 2009-09-20 18:14:12 -0400 | [diff] [blame] | 384 | -D__ASSEMBLY__ -DLINKER_SCRIPT -o $@ $< |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 385 | |
Sam Ravnborg | 767e581 | 2007-05-06 09:23:45 +0200 | [diff] [blame] | 386 | $(obj)/%.lds: $(src)/%.lds.S FORCE |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 387 | $(call if_changed_dep,cpp_lds_S) |
| 388 | |
David Howells | 4520c6a | 2012-09-21 23:31:13 +0100 | [diff] [blame] | 389 | # ASN.1 grammar |
| 390 | # --------------------------------------------------------------------------- |
Masahiro Yamada | 49d5089 | 2019-07-21 01:27:38 +0900 | [diff] [blame] | 391 | quiet_cmd_asn1_compiler = ASN.1 $(basename $@).[ch] |
David Howells | 4520c6a | 2012-09-21 23:31:13 +0100 | [diff] [blame] | 392 | cmd_asn1_compiler = $(objtree)/scripts/asn1_compiler $< \ |
Masahiro Yamada | 49d5089 | 2019-07-21 01:27:38 +0900 | [diff] [blame] | 393 | $(basename $@).c $(basename $@).h |
David Howells | 4520c6a | 2012-09-21 23:31:13 +0100 | [diff] [blame] | 394 | |
Masahiro Yamada | 4fa8bc9 | 2018-03-23 22:04:37 +0900 | [diff] [blame] | 395 | $(obj)/%.asn1.c $(obj)/%.asn1.h: $(src)/%.asn1 $(objtree)/scripts/asn1_compiler |
David Howells | 4520c6a | 2012-09-21 23:31:13 +0100 | [diff] [blame] | 396 | $(call cmd,asn1_compiler) |
| 397 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 398 | # Build the compiled-in targets |
| 399 | # --------------------------------------------------------------------------- |
| 400 | |
| 401 | # To build objects in subdirs, we need to descend into the directories |
Masahiro Yamada | aaa385b | 2020-05-22 11:00:01 +0900 | [diff] [blame] | 402 | $(subdir-builtin): $(obj)/%/built-in.a: $(obj)/% ; |
Masahiro Yamada | 454753d | 2020-05-22 11:00:02 +0900 | [diff] [blame] | 403 | $(subdir-modorder): $(obj)/%/modules.order: $(obj)/% ; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 404 | |
| 405 | # |
Masahiro Yamada | dee9495 | 2019-01-17 09:10:03 +0900 | [diff] [blame] | 406 | # Rule to compile a set of .o files into one .a file (without symbol table) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 407 | # |
Masahiro Yamada | cd968b9 | 2022-05-27 19:01:52 +0900 | [diff] [blame] | 408 | # To make this rule robust against "Argument list too long" error, |
| 409 | # remove $(obj)/ prefix, and restore it by a shell command. |
Stephen Rothwell | a5967db | 2016-08-24 22:29:19 +1000 | [diff] [blame] | 410 | |
Masahiro Yamada | 5e18f02 | 2018-03-19 20:26:12 +0900 | [diff] [blame] | 411 | quiet_cmd_ar_builtin = AR $@ |
Masahiro Yamada | cd968b9 | 2022-05-27 19:01:52 +0900 | [diff] [blame] | 412 | cmd_ar_builtin = rm -f $@; \ |
Masahiro Yamada | 5439d4d | 2022-06-14 14:51:49 +0900 | [diff] [blame] | 413 | $(if $(real-prereqs), printf "$(obj)/%s " $(patsubst $(obj)/%,%,$(real-prereqs)) | xargs) \ |
| 414 | $(AR) cDPrST $@ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 415 | |
Masahiro Yamada | e578edc | 2020-05-22 10:59:58 +0900 | [diff] [blame] | 416 | $(obj)/built-in.a: $(real-obj-y) FORCE |
Masahiro Yamada | 7375cbc | 2022-05-13 20:39:23 +0900 | [diff] [blame] | 417 | $(call if_changed,ar_builtin) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 418 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 419 | # |
Tejun Heo | 551559e | 2007-12-07 21:04:30 +0900 | [diff] [blame] | 420 | # Rule to create modules.order file |
| 421 | # |
| 422 | # Create commands to either record .ko file or cat modules.order from |
| 423 | # a subdirectory |
Masahiro Yamada | b2c8855 | 2020-06-01 14:57:00 +0900 | [diff] [blame] | 424 | # Add $(obj-m) as the prerequisite to avoid updating the timestamp of |
| 425 | # modules.order unless contained modules are updated. |
| 426 | |
| 427 | cmd_modules_order = { $(foreach m, $(real-prereqs), \ |
Masahiro Yamada | f65a486 | 2022-12-11 22:04:07 +0900 | [diff] [blame] | 428 | $(if $(filter %/modules.order, $m), cat $m, echo $m);) :; } \ |
Masahiro Yamada | d724b57 | 2022-08-20 18:15:30 +0900 | [diff] [blame] | 429 | > $@ |
Tejun Heo | 551559e | 2007-12-07 21:04:30 +0900 | [diff] [blame] | 430 | |
Masahiro Yamada | b2c8855 | 2020-06-01 14:57:00 +0900 | [diff] [blame] | 431 | $(obj)/modules.order: $(obj-m) FORCE |
| 432 | $(call if_changed,modules_order) |
| 433 | |
Tejun Heo | 551559e | 2007-12-07 21:04:30 +0900 | [diff] [blame] | 434 | # |
Masahiro Yamada | dee9495 | 2019-01-17 09:10:03 +0900 | [diff] [blame] | 435 | # Rule to compile a set of .o files into one .a file (with symbol table) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 436 | # |
Sami Tolvanen | 38e8918 | 2020-12-11 10:46:20 -0800 | [diff] [blame] | 437 | |
Masahiro Yamada | e578edc | 2020-05-22 10:59:58 +0900 | [diff] [blame] | 438 | $(obj)/lib.a: $(lib-y) FORCE |
Masahiro Yamada | 7375cbc | 2022-05-13 20:39:23 +0900 | [diff] [blame] | 439 | $(call if_changed,ar) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 440 | |
Masahiro Yamada | f6b66ca | 2022-05-27 19:01:55 +0900 | [diff] [blame] | 441 | quiet_cmd_ld_multi_m = LD [M] $@ |
| 442 | cmd_ld_multi_m = $(LD) $(ld_flags) -r -o $@ @$(patsubst %.o,%.mod,$@) $(cmd_objtool) |
| 443 | |
| 444 | define rule_ld_multi_m |
| 445 | $(call cmd_and_savecmd,ld_multi_m) |
| 446 | $(call cmd,gen_objtooldep) |
| 447 | endef |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 448 | |
Masahiro Yamada | c25e1c5 | 2022-05-27 19:01:49 +0900 | [diff] [blame] | 449 | $(multi-obj-m): objtool-enabled := $(delay-objtool) |
| 450 | $(multi-obj-m): part-of-module := y |
Masahiro Yamada | feb7d79 | 2022-04-07 00:30:23 +0900 | [diff] [blame] | 451 | $(multi-obj-m): %.o: %.mod FORCE |
Masahiro Yamada | f6b66ca | 2022-05-27 19:01:55 +0900 | [diff] [blame] | 452 | $(call if_changed_rule,ld_multi_m) |
Masahiro Yamada | a6601e0 | 2021-03-06 15:11:20 +0900 | [diff] [blame] | 453 | $(call multi_depend, $(multi-obj-m), .o, -objs -y -m) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 454 | |
Masahiro Yamada | b23d1a2 | 2018-03-23 22:04:33 +0900 | [diff] [blame] | 455 | # Add intermediate targets: |
| 456 | # When building objects with specific suffix patterns, add intermediate |
| 457 | # targets that the final targets are derived from. |
| 458 | intermediate_targets = $(foreach sfx, $(2), \ |
| 459 | $(patsubst %$(strip $(1)),%$(sfx), \ |
| 460 | $(filter %$(strip $(1)), $(targets)))) |
Masahiro Yamada | 54a702f | 2018-03-23 22:04:39 +0900 | [diff] [blame] | 461 | # %.asn1.o <- %.asn1.[ch] <- %.asn1 |
Masahiro Yamada | a7f9241 | 2018-03-23 22:04:34 +0900 | [diff] [blame] | 462 | # %.dtb.o <- %.dtb.S <- %.dtb <- %.dts |
Andrew Davis | dcad240 | 2022-11-14 14:59:39 -0600 | [diff] [blame] | 463 | # %.dtbo.o <- %.dtbo.S <- %.dtbo <- %.dtso |
Masahiro Yamada | b23d1a2 | 2018-03-23 22:04:33 +0900 | [diff] [blame] | 464 | # %.lex.o <- %.lex.c <- %.l |
| 465 | # %.tab.o <- %.tab.[ch] <- %.y |
Masahiro Yamada | 54a702f | 2018-03-23 22:04:39 +0900 | [diff] [blame] | 466 | targets += $(call intermediate_targets, .asn1.o, .asn1.c .asn1.h) \ |
| 467 | $(call intermediate_targets, .dtb.o, .dtb.S .dtb) \ |
Andrew Davis | dcad240 | 2022-11-14 14:59:39 -0600 | [diff] [blame] | 468 | $(call intermediate_targets, .dtbo.o, .dtbo.S .dtbo) \ |
Masahiro Yamada | a7f9241 | 2018-03-23 22:04:34 +0900 | [diff] [blame] | 469 | $(call intermediate_targets, .lex.o, .lex.c) \ |
Masahiro Yamada | b23d1a2 | 2018-03-23 22:04:33 +0900 | [diff] [blame] | 470 | $(call intermediate_targets, .tab.o, .tab.c .tab.h) |
| 471 | |
Masahiro Yamada | 394053f | 2019-08-15 00:19:18 +0900 | [diff] [blame] | 472 | # Build |
| 473 | # --------------------------------------------------------------------------- |
| 474 | |
Masahiro Yamada | cc306ab | 2022-09-06 15:13:06 +0900 | [diff] [blame] | 475 | $(obj)/: $(if $(KBUILD_BUILTIN), $(targets-for-builtin)) \ |
Masahiro Yamada | f3908ab | 2020-06-01 14:56:56 +0900 | [diff] [blame] | 476 | $(if $(KBUILD_MODULES), $(targets-for-modules)) \ |
Masahiro Yamada | 5f2fb52 | 2020-02-02 01:49:24 +0900 | [diff] [blame] | 477 | $(subdir-ym) $(always-y) |
Masahiro Yamada | 394053f | 2019-08-15 00:19:18 +0900 | [diff] [blame] | 478 | @: |
| 479 | |
Masahiro Yamada | cc306ab | 2022-09-06 15:13:06 +0900 | [diff] [blame] | 480 | # Single targets |
| 481 | # --------------------------------------------------------------------------- |
| 482 | |
| 483 | single-subdirs := $(foreach d, $(subdir-ym), $(if $(filter $d/%, $(MAKECMDGOALS)), $d)) |
| 484 | single-subdir-goals := $(filter $(addsuffix /%, $(single-subdirs)), $(MAKECMDGOALS)) |
| 485 | |
| 486 | $(single-subdir-goals): $(single-subdirs) |
| 487 | @: |
Masahiro Yamada | 394053f | 2019-08-15 00:19:18 +0900 | [diff] [blame] | 488 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 489 | # Descending |
| 490 | # --------------------------------------------------------------------------- |
| 491 | |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 492 | PHONY += $(subdir-ym) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 493 | $(subdir-ym): |
Masahiro Yamada | d9f78ed | 2019-08-06 19:03:21 +0900 | [diff] [blame] | 494 | $(Q)$(MAKE) $(build)=$@ \ |
Masahiro Yamada | aaa385b | 2020-05-22 11:00:01 +0900 | [diff] [blame] | 495 | need-builtin=$(if $(filter $@/built-in.a, $(subdir-builtin)),1) \ |
Masahiro Yamada | cc306ab | 2022-09-06 15:13:06 +0900 | [diff] [blame] | 496 | need-modorder=$(if $(filter $@/modules.order, $(subdir-modorder)),1) \ |
| 497 | $(filter $@/%, $(single-subdir-goals)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 498 | |
| 499 | # Add FORCE to the prequisites of a target to force it to be always rebuilt. |
| 500 | # --------------------------------------------------------------------------- |
| 501 | |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 502 | PHONY += FORCE |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 503 | |
| 504 | FORCE: |
| 505 | |
Masahiro Yamada | cc306ab | 2022-09-06 15:13:06 +0900 | [diff] [blame] | 506 | targets += $(filter-out $(single-subdir-goals), $(MAKECMDGOALS)) |
| 507 | targets := $(filter-out $(PHONY), $(targets)) |
| 508 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 509 | # Read all saved command lines and dependencies for the $(targets) we |
| 510 | # may be building above, using $(if_changed{,_dep}). As an |
| 511 | # optimization, we don't need to read them if the target does not |
| 512 | # exist, we will rebuild anyway in that case. |
| 513 | |
Masahiro Yamada | 392885e | 2018-11-30 10:05:22 +0900 | [diff] [blame] | 514 | existing-targets := $(wildcard $(sort $(targets))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 515 | |
Masahiro Yamada | 392885e | 2018-11-30 10:05:22 +0900 | [diff] [blame] | 516 | -include $(foreach f,$(existing-targets),$(dir $(f)).$(notdir $(f)).cmd) |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 517 | |
Masahiro Yamada | 8a78756 | 2017-11-13 19:29:37 +0900 | [diff] [blame] | 518 | # Create directories for object files if they do not exist |
Masahiro Yamada | cc8a51c | 2020-07-01 12:29:51 +0900 | [diff] [blame] | 519 | obj-dirs := $(sort $(patsubst %/,%, $(dir $(targets)))) |
Masahiro Yamada | 392885e | 2018-11-30 10:05:22 +0900 | [diff] [blame] | 520 | # If targets exist, their directories apparently exist. Skip mkdir. |
| 521 | existing-dirs := $(sort $(patsubst %/,%, $(dir $(existing-targets)))) |
| 522 | obj-dirs := $(strip $(filter-out $(existing-dirs), $(obj-dirs))) |
Masahiro Yamada | c4da7ed | 2017-11-13 19:29:38 +0900 | [diff] [blame] | 523 | ifneq ($(obj-dirs),) |
Masahiro Yamada | 8a78756 | 2017-11-13 19:29:37 +0900 | [diff] [blame] | 524 | $(shell mkdir -p $(obj-dirs)) |
| 525 | endif |
| 526 | |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 527 | .PHONY: $(PHONY) |