1# SPDX-License-Identifier: GPL-2.0 2 3# Where to place rustdoc generated documentation 4rustdoc_output := $(objtree)/Documentation/output/rust/rustdoc 5 6obj-$(CONFIG_RUST) += core.o compiler_builtins.o 7always-$(CONFIG_RUST) += exports_core_generated.h 8 9# Missing prototypes are expected in the helpers since these are exported 10# for Rust only, thus there is no header nor prototypes. 11obj-$(CONFIG_RUST) += helpers/helpers.o 12CFLAGS_REMOVE_helpers/helpers.o = -Wmissing-prototypes -Wmissing-declarations 13 14always-$(CONFIG_RUST) += libmacros.so 15no-clean-files += libmacros.so 16 17always-$(CONFIG_RUST) += bindings/bindings_generated.rs bindings/bindings_helpers_generated.rs 18obj-$(CONFIG_RUST) += alloc.o bindings.o kernel.o 19always-$(CONFIG_RUST) += exports_alloc_generated.h exports_helpers_generated.h \ 20 exports_bindings_generated.h exports_kernel_generated.h 21 22always-$(CONFIG_RUST) += uapi/uapi_generated.rs 23obj-$(CONFIG_RUST) += uapi.o 24 25ifdef CONFIG_RUST_BUILD_ASSERT_ALLOW 26obj-$(CONFIG_RUST) += build_error.o 27else 28always-$(CONFIG_RUST) += build_error.o 29endif 30 31obj-$(CONFIG_RUST) += exports.o 32 33always-$(CONFIG_RUST_KERNEL_DOCTESTS) += doctests_kernel_generated.rs 34always-$(CONFIG_RUST_KERNEL_DOCTESTS) += doctests_kernel_generated_kunit.c 35 36obj-$(CONFIG_RUST_KERNEL_DOCTESTS) += doctests_kernel_generated.o 37obj-$(CONFIG_RUST_KERNEL_DOCTESTS) += doctests_kernel_generated_kunit.o 38 39always-$(subst y,$(CONFIG_RUST),$(CONFIG_JUMP_LABEL)) += kernel/generated_arch_static_branch_asm.rs 40 41# Avoids running `$(RUSTC)` for the sysroot when it may not be available. 42ifdef CONFIG_RUST 43 44# `$(rust_flags)` is passed in case the user added `--sysroot`. 45rustc_sysroot := $(shell MAKEFLAGS= $(RUSTC) $(rust_flags) --print sysroot) 46rustc_host_target := $(shell $(RUSTC) --version --verbose | grep -F 'host: ' | cut -d' ' -f2) 47RUST_LIB_SRC ?= $(rustc_sysroot)/lib/rustlib/src/rust/library 48 49ifneq ($(quiet),) 50rust_test_quiet=-q 51rustdoc_test_quiet=--test-args -q 52rustdoc_test_kernel_quiet=>/dev/null 53endif 54 55core-cfgs = \ 56 --cfg no_fp_fmt_parse 57 58alloc-cfgs = \ 59 --cfg no_global_oom_handling \ 60 --cfg no_rc \ 61 --cfg no_sync 62 63quiet_cmd_rustdoc = RUSTDOC $(if $(rustdoc_host),H, ) $< 64 cmd_rustdoc = \ 65 OBJTREE=$(abspath $(objtree)) \ 66 $(RUSTDOC) $(if $(rustdoc_host),$(rust_common_flags),$(rust_flags)) \ 67 $(rustc_target_flags) -L$(objtree)/$(obj) \ 68 -Zunstable-options --generate-link-to-definition \ 69 --output $(rustdoc_output) \ 70 --crate-name $(subst rustdoc-,,$@) \ 71 $(if $(rustdoc_host),,--sysroot=/dev/null) \ 72 @$(objtree)/include/generated/rustc_cfg $< 73 74# The `html_logo_url` and `html_favicon_url` forms of the `doc` attribute 75# can be used to specify a custom logo. However: 76# - The given value is used as-is, thus it cannot be relative or a local file 77# (unlike the non-custom case) since the generated docs have subfolders. 78# - It requires adding it to every crate. 79# - It requires changing `core` which comes from the sysroot. 80# 81# Using `-Zcrate-attr` would solve the last two points, but not the first. 82# The https://github.com/rust-lang/rfcs/pull/3226 RFC suggests two new 83# command-like flags to solve the issue. Meanwhile, we use the non-custom case 84# and then retouch the generated files. 85rustdoc: rustdoc-core rustdoc-macros rustdoc-compiler_builtins \ 86 rustdoc-alloc rustdoc-kernel 87 $(Q)cp $(srctree)/Documentation/images/logo.svg $(rustdoc_output)/static.files/ 88 $(Q)cp $(srctree)/Documentation/images/COPYING-logo $(rustdoc_output)/static.files/ 89 $(Q)find $(rustdoc_output) -name '*.html' -type f -print0 | xargs -0 sed -Ei \ 90 -e 's:rust-logo-[0-9a-f]+\.svg:logo.svg:g' \ 91 -e 's:favicon-[0-9a-f]+\.svg:logo.svg:g' \ 92 -e 's:<link rel="alternate icon" type="image/png" href="[/.]+/static\.files/favicon-(16x16|32x32)-[0-9a-f]+\.png">::g' \ 93 -e 's:<a href="srctree/([^"]+)">:<a href="$(realpath $(srctree))/\1">:g' 94 $(Q)for f in $(rustdoc_output)/static.files/rustdoc-*.css; do \ 95 echo ".logo-container > img { object-fit: contain; }" >> $$f; done 96 97rustdoc-macros: private rustdoc_host = yes 98rustdoc-macros: private rustc_target_flags = --crate-type proc-macro \ 99 --extern proc_macro 100rustdoc-macros: $(src)/macros/lib.rs FORCE 101 +$(call if_changed,rustdoc) 102 103rustdoc-core: private rustc_target_flags = $(core-cfgs) 104rustdoc-core: $(RUST_LIB_SRC)/core/src/lib.rs FORCE 105 +$(call if_changed,rustdoc) 106 107rustdoc-compiler_builtins: $(src)/compiler_builtins.rs rustdoc-core FORCE 108 +$(call if_changed,rustdoc) 109 110# We need to allow `rustdoc::broken_intra_doc_links` because some 111# `no_global_oom_handling` functions refer to non-`no_global_oom_handling` 112# functions. Ideally `rustdoc` would have a way to distinguish broken links 113# due to things that are "configured out" vs. entirely non-existing ones. 114rustdoc-alloc: private rustc_target_flags = $(alloc-cfgs) \ 115 -Arustdoc::broken_intra_doc_links 116rustdoc-alloc: $(RUST_LIB_SRC)/alloc/src/lib.rs rustdoc-core rustdoc-compiler_builtins FORCE 117 +$(call if_changed,rustdoc) 118 119rustdoc-kernel: private rustc_target_flags = --extern alloc \ 120 --extern build_error --extern macros=$(objtree)/$(obj)/libmacros.so \ 121 --extern bindings --extern uapi 122rustdoc-kernel: $(src)/kernel/lib.rs rustdoc-core rustdoc-macros \ 123 rustdoc-compiler_builtins rustdoc-alloc $(obj)/libmacros.so \ 124 $(obj)/bindings.o FORCE 125 +$(call if_changed,rustdoc) 126 127quiet_cmd_rustc_test_library = RUSTC TL $< 128 cmd_rustc_test_library = \ 129 OBJTREE=$(abspath $(objtree)) \ 130 $(RUSTC) $(rust_common_flags) \ 131 @$(objtree)/include/generated/rustc_cfg $(rustc_target_flags) \ 132 --crate-type $(if $(rustc_test_library_proc),proc-macro,rlib) \ 133 --out-dir $(objtree)/$(obj)/test --cfg testlib \ 134 -L$(objtree)/$(obj)/test \ 135 --crate-name $(subst rusttest-,,$(subst rusttestlib-,,$@)) $< 136 137rusttestlib-build_error: $(src)/build_error.rs FORCE 138 +$(call if_changed,rustc_test_library) 139 140rusttestlib-macros: private rustc_target_flags = --extern proc_macro 141rusttestlib-macros: private rustc_test_library_proc = yes 142rusttestlib-macros: $(src)/macros/lib.rs FORCE 143 +$(call if_changed,rustc_test_library) 144 145rusttestlib-bindings: $(src)/bindings/lib.rs FORCE 146 +$(call if_changed,rustc_test_library) 147 148rusttestlib-uapi: $(src)/uapi/lib.rs FORCE 149 +$(call if_changed,rustc_test_library) 150 151quiet_cmd_rustdoc_test = RUSTDOC T $< 152 cmd_rustdoc_test = \ 153 OBJTREE=$(abspath $(objtree)) \ 154 $(RUSTDOC) --test $(rust_common_flags) \ 155 @$(objtree)/include/generated/rustc_cfg \ 156 $(rustc_target_flags) $(rustdoc_test_target_flags) \ 157 $(rustdoc_test_quiet) \ 158 -L$(objtree)/$(obj)/test --output $(rustdoc_output) \ 159 --crate-name $(subst rusttest-,,$@) $< 160 161quiet_cmd_rustdoc_test_kernel = RUSTDOC TK $< 162 cmd_rustdoc_test_kernel = \ 163 rm -rf $(objtree)/$(obj)/test/doctests/kernel; \ 164 mkdir -p $(objtree)/$(obj)/test/doctests/kernel; \ 165 OBJTREE=$(abspath $(objtree)) \ 166 $(RUSTDOC) --test $(rust_flags) \ 167 -L$(objtree)/$(obj) --extern alloc --extern kernel \ 168 --extern build_error --extern macros \ 169 --extern bindings --extern uapi \ 170 --no-run --crate-name kernel -Zunstable-options \ 171 --sysroot=/dev/null \ 172 --test-builder $(objtree)/scripts/rustdoc_test_builder \ 173 $< $(rustdoc_test_kernel_quiet); \ 174 $(objtree)/scripts/rustdoc_test_gen 175 176%/doctests_kernel_generated.rs %/doctests_kernel_generated_kunit.c: \ 177 $(src)/kernel/lib.rs $(obj)/kernel.o \ 178 $(objtree)/scripts/rustdoc_test_builder \ 179 $(objtree)/scripts/rustdoc_test_gen FORCE 180 +$(call if_changed,rustdoc_test_kernel) 181 182# We cannot use `-Zpanic-abort-tests` because some tests are dynamic, 183# so for the moment we skip `-Cpanic=abort`. 184quiet_cmd_rustc_test = RUSTC T $< 185 cmd_rustc_test = \ 186 OBJTREE=$(abspath $(objtree)) \ 187 $(RUSTC) --test $(rust_common_flags) \ 188 @$(objtree)/include/generated/rustc_cfg \ 189 $(rustc_target_flags) --out-dir $(objtree)/$(obj)/test \ 190 -L$(objtree)/$(obj)/test \ 191 --crate-name $(subst rusttest-,,$@) $<; \ 192 $(objtree)/$(obj)/test/$(subst rusttest-,,$@) $(rust_test_quiet) \ 193 $(rustc_test_run_flags) 194 195rusttest: rusttest-macros rusttest-kernel 196 197rusttest-macros: private rustc_target_flags = --extern proc_macro 198rusttest-macros: private rustdoc_test_target_flags = --crate-type proc-macro 199rusttest-macros: $(src)/macros/lib.rs FORCE 200 +$(call if_changed,rustc_test) 201 +$(call if_changed,rustdoc_test) 202 203rusttest-kernel: private rustc_target_flags = --extern alloc \ 204 --extern build_error --extern macros --extern bindings --extern uapi 205rusttest-kernel: $(src)/kernel/lib.rs \ 206 rusttestlib-build_error rusttestlib-macros rusttestlib-bindings \ 207 rusttestlib-uapi FORCE 208 +$(call if_changed,rustc_test) 209 +$(call if_changed,rustc_test_library) 210 211ifdef CONFIG_CC_IS_CLANG 212bindgen_c_flags = $(c_flags) 213else 214# bindgen relies on libclang to parse C. Ideally, bindgen would support a GCC 215# plugin backend and/or the Clang driver would be perfectly compatible with GCC. 216# 217# For the moment, here we are tweaking the flags on the fly. This is a hack, 218# and some kernel configurations may not work (e.g. `GCC_PLUGIN_RANDSTRUCT` 219# if we end up using one of those structs). 220bindgen_skip_c_flags := -mno-fp-ret-in-387 -mpreferred-stack-boundary=% \ 221 -mskip-rax-setup -mgeneral-regs-only -msign-return-address=% \ 222 -mindirect-branch=thunk-extern -mindirect-branch-register \ 223 -mfunction-return=thunk-extern -mrecord-mcount -mabi=lp64 \ 224 -mindirect-branch-cs-prefix -mstack-protector-guard% -mtraceback=no \ 225 -mno-pointers-to-nested-functions -mno-string \ 226 -mno-strict-align -mstrict-align \ 227 -fconserve-stack -falign-jumps=% -falign-loops=% \ 228 -femit-struct-debug-baseonly -fno-ipa-cp-clone -fno-ipa-sra \ 229 -fno-partial-inlining -fplugin-arg-arm_ssp_per_task_plugin-% \ 230 -fno-reorder-blocks -fno-allow-store-data-races -fasan-shadow-offset=% \ 231 -fzero-call-used-regs=% -fno-stack-clash-protection \ 232 -fno-inline-functions-called-once -fsanitize=bounds-strict \ 233 -fstrict-flex-arrays=% -fmin-function-alignment=% \ 234 --param=% --param asan-% 235 236# Derived from `scripts/Makefile.clang`. 237BINDGEN_TARGET_x86 := x86_64-linux-gnu 238BINDGEN_TARGET_arm64 := aarch64-linux-gnu 239BINDGEN_TARGET := $(BINDGEN_TARGET_$(SRCARCH)) 240 241# All warnings are inhibited since GCC builds are very experimental, 242# many GCC warnings are not supported by Clang, they may only appear in 243# some configurations, with new GCC versions, etc. 244bindgen_extra_c_flags = -w --target=$(BINDGEN_TARGET) 245 246# Auto variable zero-initialization requires an additional special option with 247# clang that is going to be removed sometime in the future (likely in 248# clang-18), so make sure to pass this option only if clang supports it 249# (libclang major version < 16). 250# 251# https://github.com/llvm/llvm-project/issues/44842 252# https://github.com/llvm/llvm-project/blob/llvmorg-16.0.0-rc2/clang/docs/ReleaseNotes.rst#deprecated-compiler-flags 253ifdef CONFIG_INIT_STACK_ALL_ZERO 254libclang_maj_ver=$(shell $(BINDGEN) $(srctree)/scripts/rust_is_available_bindgen_libclang.h 2>&1 | sed -ne 's/.*clang version \([0-9]*\).*/\1/p') 255ifeq ($(shell expr $(libclang_maj_ver) \< 16), 1) 256bindgen_extra_c_flags += -enable-trivial-auto-var-init-zero-knowing-it-will-be-removed-from-clang 257endif 258endif 259 260bindgen_c_flags = $(filter-out $(bindgen_skip_c_flags), $(c_flags)) \ 261 $(bindgen_extra_c_flags) 262endif 263 264ifdef CONFIG_LTO 265bindgen_c_flags_lto = $(filter-out $(CC_FLAGS_LTO), $(bindgen_c_flags)) 266else 267bindgen_c_flags_lto = $(bindgen_c_flags) 268endif 269 270bindgen_c_flags_final = $(bindgen_c_flags_lto) -D__BINDGEN__ 271 272quiet_cmd_bindgen = BINDGEN $@ 273 cmd_bindgen = \ 274 $(BINDGEN) $< $(bindgen_target_flags) \ 275 --use-core --with-derive-default --ctypes-prefix core::ffi --no-layout-tests \ 276 --no-debug '.*' --enable-function-attribute-detection \ 277 -o $@ -- $(bindgen_c_flags_final) -DMODULE \ 278 $(bindgen_target_cflags) $(bindgen_target_extra) 279 280$(obj)/bindings/bindings_generated.rs: private bindgen_target_flags = \ 281 $(shell grep -Ev '^#|^$$' $(src)/bindgen_parameters) 282$(obj)/bindings/bindings_generated.rs: private bindgen_target_extra = ; \ 283 sed -Ei 's/pub const RUST_CONST_HELPER_([a-zA-Z0-9_]*)/pub const \1/g' $@ 284$(obj)/bindings/bindings_generated.rs: $(src)/bindings/bindings_helper.h \ 285 $(src)/bindgen_parameters FORCE 286 $(call if_changed_dep,bindgen) 287 288$(obj)/uapi/uapi_generated.rs: private bindgen_target_flags = \ 289 $(shell grep -Ev '^#|^$$' $(src)/bindgen_parameters) 290$(obj)/uapi/uapi_generated.rs: $(src)/uapi/uapi_helper.h \ 291 $(src)/bindgen_parameters FORCE 292 $(call if_changed_dep,bindgen) 293 294# See `CFLAGS_REMOVE_helpers.o` above. In addition, Clang on C does not warn 295# with `-Wmissing-declarations` (unlike GCC), so it is not strictly needed here 296# given it is `libclang`; but for consistency, future Clang changes and/or 297# a potential future GCC backend for `bindgen`, we disable it too. 298$(obj)/bindings/bindings_helpers_generated.rs: private bindgen_target_flags = \ 299 --blocklist-type '.*' --allowlist-var '' \ 300 --allowlist-function 'rust_helper_.*' 301$(obj)/bindings/bindings_helpers_generated.rs: private bindgen_target_cflags = \ 302 -I$(objtree)/$(obj) -Wno-missing-prototypes -Wno-missing-declarations 303$(obj)/bindings/bindings_helpers_generated.rs: private bindgen_target_extra = ; \ 304 sed -Ei 's/pub fn rust_helper_([a-zA-Z0-9_]*)/#[link_name="rust_helper_\1"]\n pub fn \1/g' $@ 305$(obj)/bindings/bindings_helpers_generated.rs: $(src)/helpers/helpers.c FORCE 306 $(call if_changed_dep,bindgen) 307 308quiet_cmd_exports = EXPORTS $@ 309 cmd_exports = \ 310 $(NM) -p --defined-only $< \ 311 | awk '$$2~/(T|R|D|B)/ && $$3!~/__cfi/ {printf "EXPORT_SYMBOL_RUST_GPL(%s);\n",$$3}' > $@ 312 313$(obj)/exports_core_generated.h: $(obj)/core.o FORCE 314 $(call if_changed,exports) 315 316$(obj)/exports_alloc_generated.h: $(obj)/alloc.o FORCE 317 $(call if_changed,exports) 318 319# Even though Rust kernel modules should never use the bindings directly, 320# symbols from the `bindings` crate and the C helpers need to be exported 321# because Rust generics and inlined functions may not get their code generated 322# in the crate where they are defined. Other helpers, called from non-inline 323# functions, may not be exported, in principle. However, in general, the Rust 324# compiler does not guarantee codegen will be performed for a non-inline 325# function either. Therefore, we export all symbols from helpers and bindings. 326# In the future, this may be revisited to reduce the number of exports after 327# the compiler is informed about the places codegen is required. 328$(obj)/exports_helpers_generated.h: $(obj)/helpers/helpers.o FORCE 329 $(call if_changed,exports) 330 331$(obj)/exports_bindings_generated.h: $(obj)/bindings.o FORCE 332 $(call if_changed,exports) 333 334$(obj)/exports_kernel_generated.h: $(obj)/kernel.o FORCE 335 $(call if_changed,exports) 336 337quiet_cmd_rustc_procmacro = $(RUSTC_OR_CLIPPY_QUIET) P $@ 338 cmd_rustc_procmacro = \ 339 $(RUSTC_OR_CLIPPY) $(rust_common_flags) \ 340 -Clinker-flavor=gcc -Clinker=$(HOSTCC) \ 341 -Clink-args='$(call escsq,$(KBUILD_HOSTLDFLAGS))' \ 342 --emit=dep-info=$(depfile) --emit=link=$@ --extern proc_macro \ 343 --crate-type proc-macro \ 344 --crate-name $(patsubst lib%.so,%,$(notdir $@)) $< 345 346# Procedural macros can only be used with the `rustc` that compiled it. 347$(obj)/libmacros.so: $(src)/macros/lib.rs FORCE 348 +$(call if_changed_dep,rustc_procmacro) 349 350quiet_cmd_rustc_library = $(if $(skip_clippy),RUSTC,$(RUSTC_OR_CLIPPY_QUIET)) L $@ 351 cmd_rustc_library = \ 352 OBJTREE=$(abspath $(objtree)) \ 353 $(if $(skip_clippy),$(RUSTC),$(RUSTC_OR_CLIPPY)) \ 354 $(filter-out $(skip_flags),$(rust_flags) $(rustc_target_flags)) \ 355 --emit=dep-info=$(depfile) --emit=obj=$@ \ 356 --emit=metadata=$(dir $@)$(patsubst %.o,lib%.rmeta,$(notdir $@)) \ 357 --crate-type rlib -L$(objtree)/$(obj) \ 358 --crate-name $(patsubst %.o,%,$(notdir $@)) $< \ 359 --sysroot=/dev/null \ 360 $(if $(rustc_objcopy),;$(OBJCOPY) $(rustc_objcopy) $@) \ 361 $(cmd_objtool) 362 363rust-analyzer: 364 $(Q)$(srctree)/scripts/generate_rust_analyzer.py \ 365 --cfgs='core=$(core-cfgs)' --cfgs='alloc=$(alloc-cfgs)' \ 366 $(realpath $(srctree)) $(realpath $(objtree)) \ 367 $(rustc_sysroot) $(RUST_LIB_SRC) $(KBUILD_EXTMOD) > \ 368 $(if $(KBUILD_EXTMOD),$(extmod_prefix),$(objtree))/rust-project.json 369 370redirect-intrinsics = \ 371 __addsf3 __eqsf2 __extendsfdf2 __gesf2 __lesf2 __ltsf2 __mulsf3 __nesf2 __truncdfsf2 __unordsf2 \ 372 __adddf3 __eqdf2 __ledf2 __ltdf2 __muldf3 __unorddf2 \ 373 __muloti4 __multi3 \ 374 __udivmodti4 __udivti3 __umodti3 375 376ifneq ($(or $(CONFIG_ARM64),$(and $(CONFIG_RISCV),$(CONFIG_64BIT))),) 377 # These intrinsics are defined for ARM64 and RISCV64 378 redirect-intrinsics += \ 379 __ashrti3 \ 380 __ashlti3 __lshrti3 381endif 382 383define rule_rustc_library 384 $(call cmd_and_fixdep,rustc_library) 385 $(call cmd,gen_objtooldep) 386endef 387 388$(obj)/core.o: private skip_clippy = 1 389$(obj)/core.o: private skip_flags = -Wunreachable_pub 390$(obj)/core.o: private rustc_objcopy = $(foreach sym,$(redirect-intrinsics),--redefine-sym $(sym)=__rust$(sym)) 391$(obj)/core.o: private rustc_target_flags = $(core-cfgs) 392$(obj)/core.o: $(RUST_LIB_SRC)/core/src/lib.rs \ 393 $(wildcard $(objtree)/include/config/RUSTC_VERSION_TEXT) FORCE 394 +$(call if_changed_rule,rustc_library) 395ifneq ($(or $(CONFIG_X86_64),$(CONFIG_X86_32)),) 396$(obj)/core.o: scripts/target.json 397endif 398 399$(obj)/compiler_builtins.o: private rustc_objcopy = -w -W '__*' 400$(obj)/compiler_builtins.o: $(src)/compiler_builtins.rs $(obj)/core.o FORCE 401 +$(call if_changed_rule,rustc_library) 402 403$(obj)/alloc.o: private skip_clippy = 1 404$(obj)/alloc.o: private skip_flags = -Wunreachable_pub 405$(obj)/alloc.o: private rustc_target_flags = $(alloc-cfgs) 406$(obj)/alloc.o: $(RUST_LIB_SRC)/alloc/src/lib.rs $(obj)/compiler_builtins.o FORCE 407 +$(call if_changed_rule,rustc_library) 408 409$(obj)/build_error.o: $(src)/build_error.rs $(obj)/compiler_builtins.o FORCE 410 +$(call if_changed_rule,rustc_library) 411 412$(obj)/bindings.o: $(src)/bindings/lib.rs \ 413 $(obj)/compiler_builtins.o \ 414 $(obj)/bindings/bindings_generated.rs \ 415 $(obj)/bindings/bindings_helpers_generated.rs FORCE 416 +$(call if_changed_rule,rustc_library) 417 418$(obj)/uapi.o: $(src)/uapi/lib.rs \ 419 $(obj)/compiler_builtins.o \ 420 $(obj)/uapi/uapi_generated.rs FORCE 421 +$(call if_changed_rule,rustc_library) 422 423$(obj)/kernel.o: private rustc_target_flags = --extern alloc \ 424 --extern build_error --extern macros --extern bindings --extern uapi 425$(obj)/kernel.o: $(src)/kernel/lib.rs $(obj)/alloc.o $(obj)/build_error.o \ 426 $(obj)/libmacros.so $(obj)/bindings.o $(obj)/uapi.o FORCE 427 +$(call if_changed_rule,rustc_library) 428 429ifdef CONFIG_JUMP_LABEL 430$(obj)/kernel.o: $(obj)/kernel/generated_arch_static_branch_asm.rs 431endif 432 433endif # CONFIG_RUST 434
