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.o 12CFLAGS_REMOVE_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_bindings_generated.h \ 20 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-$(CONFIG_RUST_KERNEL_DOCTESTS) += doctests_kernel_generated_kunit.o 38 39# Avoids running `$(RUSTC)` for the sysroot when it may not be available. 40ifdef CONFIG_RUST 41 42# `$(rust_flags)` is passed in case the user added `--sysroot`. 43rustc_sysroot := $(shell $(RUSTC) $(rust_flags) --print sysroot) 44rustc_host_target := $(shell $(RUSTC) --version --verbose | grep -F 'host: ' | cut -d' ' -f2) 45RUST_LIB_SRC ?= $(rustc_sysroot)/lib/rustlib/src/rust/library 46 47ifeq ($(quiet),silent_) 48cargo_quiet=-q 49rust_test_quiet=-q 50rustdoc_test_quiet=--test-args -q 51rustdoc_test_kernel_quiet=>/dev/null 52else ifeq ($(quiet),quiet_) 53rust_test_quiet=-q 54rustdoc_test_quiet=--test-args -q 55rustdoc_test_kernel_quiet=>/dev/null 56else 57cargo_quiet=--verbose 58endif 59 60core-cfgs = \ 61 --cfg no_fp_fmt_parse 62 63alloc-cfgs = \ 64 --cfg no_borrow \ 65 --cfg no_fmt \ 66 --cfg no_global_oom_handling \ 67 --cfg no_macros \ 68 --cfg no_rc \ 69 --cfg no_str \ 70 --cfg no_string \ 71 --cfg no_sync \ 72 --cfg no_thin 73 74quiet_cmd_rustdoc = RUSTDOC $(if $(rustdoc_host),H, ) $< 75 cmd_rustdoc = \ 76 OBJTREE=$(abspath $(objtree)) \ 77 $(RUSTDOC) $(if $(rustdoc_host),$(rust_common_flags),$(rust_flags)) \ 78 $(rustc_target_flags) -L$(objtree)/$(obj) \ 79 --output $(rustdoc_output) \ 80 --crate-name $(subst rustdoc-,,$@) \ 81 @$(objtree)/include/generated/rustc_cfg $< 82 83# The `html_logo_url` and `html_favicon_url` forms of the `doc` attribute 84# can be used to specify a custom logo. However: 85# - The given value is used as-is, thus it cannot be relative or a local file 86# (unlike the non-custom case) since the generated docs have subfolders. 87# - It requires adding it to every crate. 88# - It requires changing `core` which comes from the sysroot. 89# 90# Using `-Zcrate-attr` would solve the last two points, but not the first. 91# The https://github.com/rust-lang/rfcs/pull/3226 RFC suggests two new 92# command-like flags to solve the issue. Meanwhile, we use the non-custom case 93# and then retouch the generated files. 94rustdoc: rustdoc-core rustdoc-macros rustdoc-compiler_builtins \ 95 rustdoc-alloc rustdoc-kernel 96 $(Q)cp $(srctree)/Documentation/images/logo.svg $(rustdoc_output) 97 $(Q)cp $(srctree)/Documentation/images/COPYING-logo $(rustdoc_output) 98 $(Q)find $(rustdoc_output) -name '*.html' -type f -print0 | xargs -0 sed -Ei \ 99 -e 's:rust-logo\.svg:logo.svg:g' \ 100 -e 's:rust-logo\.png:logo.svg:g' \ 101 -e 's:favicon\.svg:logo.svg:g' \ 102 -e 's:<link rel="alternate icon" type="image/png" href="[./]*favicon-(16x16|32x32)\.png">::g' 103 $(Q)echo '.logo-container > img { object-fit: contain; }' \ 104 >> $(rustdoc_output)/rustdoc.css 105 106rustdoc-macros: private rustdoc_host = yes 107rustdoc-macros: private rustc_target_flags = --crate-type proc-macro \ 108 --extern proc_macro 109rustdoc-macros: $(src)/macros/lib.rs FORCE 110 $(call if_changed,rustdoc) 111 112rustdoc-core: private rustc_target_flags = $(core-cfgs) 113rustdoc-core: $(RUST_LIB_SRC)/core/src/lib.rs FORCE 114 $(call if_changed,rustdoc) 115 116rustdoc-compiler_builtins: $(src)/compiler_builtins.rs rustdoc-core FORCE 117 $(call if_changed,rustdoc) 118 119# We need to allow `rustdoc::broken_intra_doc_links` because some 120# `no_global_oom_handling` functions refer to non-`no_global_oom_handling` 121# functions. Ideally `rustdoc` would have a way to distinguish broken links 122# due to things that are "configured out" vs. entirely non-existing ones. 123rustdoc-alloc: private rustc_target_flags = $(alloc-cfgs) \ 124 -Arustdoc::broken_intra_doc_links 125rustdoc-alloc: $(src)/alloc/lib.rs rustdoc-core rustdoc-compiler_builtins FORCE 126 $(call if_changed,rustdoc) 127 128rustdoc-kernel: private rustc_target_flags = --extern alloc \ 129 --extern build_error --extern macros=$(objtree)/$(obj)/libmacros.so \ 130 --extern bindings --extern uapi 131rustdoc-kernel: $(src)/kernel/lib.rs rustdoc-core rustdoc-macros \ 132 rustdoc-compiler_builtins rustdoc-alloc $(obj)/libmacros.so \ 133 $(obj)/bindings.o FORCE 134 $(call if_changed,rustdoc) 135 136quiet_cmd_rustc_test_library = RUSTC TL $< 137 cmd_rustc_test_library = \ 138 OBJTREE=$(abspath $(objtree)) \ 139 $(RUSTC) $(rust_common_flags) \ 140 @$(objtree)/include/generated/rustc_cfg $(rustc_target_flags) \ 141 --crate-type $(if $(rustc_test_library_proc),proc-macro,rlib) \ 142 --out-dir $(objtree)/$(obj)/test --cfg testlib \ 143 --sysroot $(objtree)/$(obj)/test/sysroot \ 144 -L$(objtree)/$(obj)/test \ 145 --crate-name $(subst rusttest-,,$(subst rusttestlib-,,$@)) $< 146 147rusttestlib-build_error: $(src)/build_error.rs rusttest-prepare FORCE 148 $(call if_changed,rustc_test_library) 149 150rusttestlib-macros: private rustc_target_flags = --extern proc_macro 151rusttestlib-macros: private rustc_test_library_proc = yes 152rusttestlib-macros: $(src)/macros/lib.rs rusttest-prepare FORCE 153 $(call if_changed,rustc_test_library) 154 155rusttestlib-bindings: $(src)/bindings/lib.rs rusttest-prepare FORCE 156 $(call if_changed,rustc_test_library) 157 158rusttestlib-uapi: $(src)/uapi/lib.rs rusttest-prepare FORCE 159 $(call if_changed,rustc_test_library) 160 161quiet_cmd_rustdoc_test = RUSTDOC T $< 162 cmd_rustdoc_test = \ 163 OBJTREE=$(abspath $(objtree)) \ 164 $(RUSTDOC) --test $(rust_common_flags) \ 165 @$(objtree)/include/generated/rustc_cfg \ 166 $(rustc_target_flags) $(rustdoc_test_target_flags) \ 167 --sysroot $(objtree)/$(obj)/test/sysroot $(rustdoc_test_quiet) \ 168 -L$(objtree)/$(obj)/test --output $(rustdoc_output) \ 169 --crate-name $(subst rusttest-,,$@) $< 170 171quiet_cmd_rustdoc_test_kernel = RUSTDOC TK $< 172 cmd_rustdoc_test_kernel = \ 173 rm -rf $(objtree)/$(obj)/test/doctests/kernel; \ 174 mkdir -p $(objtree)/$(obj)/test/doctests/kernel; \ 175 OBJTREE=$(abspath $(objtree)) \ 176 $(RUSTDOC) --test $(rust_flags) \ 177 @$(objtree)/include/generated/rustc_cfg \ 178 -L$(objtree)/$(obj) --extern alloc --extern kernel \ 179 --extern build_error --extern macros \ 180 --extern bindings --extern uapi \ 181 --no-run --crate-name kernel -Zunstable-options \ 182 --test-builder $(objtree)/scripts/rustdoc_test_builder \ 183 $< $(rustdoc_test_kernel_quiet); \ 184 $(objtree)/scripts/rustdoc_test_gen 185 186%/doctests_kernel_generated.rs %/doctests_kernel_generated_kunit.c: \ 187 $(src)/kernel/lib.rs $(obj)/kernel.o \ 188 $(objtree)/scripts/rustdoc_test_builder \ 189 $(objtree)/scripts/rustdoc_test_gen FORCE 190 $(call if_changed,rustdoc_test_kernel) 191 192# We cannot use `-Zpanic-abort-tests` because some tests are dynamic, 193# so for the moment we skip `-Cpanic=abort`. 194quiet_cmd_rustc_test = RUSTC T $< 195 cmd_rustc_test = \ 196 OBJTREE=$(abspath $(objtree)) \ 197 $(RUSTC) --test $(rust_common_flags) \ 198 @$(objtree)/include/generated/rustc_cfg \ 199 $(rustc_target_flags) --out-dir $(objtree)/$(obj)/test \ 200 --sysroot $(objtree)/$(obj)/test/sysroot \ 201 -L$(objtree)/$(obj)/test \ 202 --crate-name $(subst rusttest-,,$@) $<; \ 203 $(objtree)/$(obj)/test/$(subst rusttest-,,$@) $(rust_test_quiet) \ 204 $(rustc_test_run_flags) 205 206rusttest: rusttest-macros rusttest-kernel 207 208# This prepares a custom sysroot with our custom `alloc` instead of 209# the standard one. 210# 211# This requires several hacks: 212# - Unlike `core` and `alloc`, `std` depends on more than a dozen crates, 213# including third-party crates that need to be downloaded, plus custom 214# `build.rs` steps. Thus hardcoding things here is not maintainable. 215# - `cargo` knows how to build the standard library, but it is an unstable 216# feature so far (`-Zbuild-std`). 217# - `cargo` only considers the use case of building the standard library 218# to use it in a given package. Thus we need to create a dummy package 219# and pick the generated libraries from there. 220# - Since we only keep a subset of upstream `alloc` in-tree, we need 221# to recreate it on the fly by putting our sources on top. 222# - The usual ways of modifying the dependency graph in `cargo` do not seem 223# to apply for the `-Zbuild-std` steps, thus we have to mislead it 224# by modifying the sources in the sysroot. 225# - To avoid messing with the user's Rust installation, we create a clone 226# of the sysroot. However, `cargo` ignores `RUSTFLAGS` in the `-Zbuild-std` 227# steps, thus we use a wrapper binary passed via `RUSTC` to pass the flag. 228# 229# In the future, we hope to avoid the whole ordeal by either: 230# - Making the `test` crate not depend on `std` (either improving upstream 231# or having our own custom crate). 232# - Making the tests run in kernel space (requires the previous point). 233# - Making `std` and friends be more like a "normal" crate, so that 234# `-Zbuild-std` and related hacks are not needed. 235quiet_cmd_rustsysroot = RUSTSYSROOT 236 cmd_rustsysroot = \ 237 rm -rf $(objtree)/$(obj)/test; \ 238 mkdir -p $(objtree)/$(obj)/test; \ 239 cp -a $(rustc_sysroot) $(objtree)/$(obj)/test/sysroot; \ 240 cp -r $(srctree)/$(src)/alloc/* \ 241 $(objtree)/$(obj)/test/sysroot/lib/rustlib/src/rust/library/alloc/src; \ 242 echo '\#!/bin/sh' > $(objtree)/$(obj)/test/rustc_sysroot; \ 243 echo "$(RUSTC) --sysroot=$(abspath $(objtree)/$(obj)/test/sysroot) \"\$$@\"" \ 244 >> $(objtree)/$(obj)/test/rustc_sysroot; \ 245 chmod u+x $(objtree)/$(obj)/test/rustc_sysroot; \ 246 $(CARGO) -q new $(objtree)/$(obj)/test/dummy; \ 247 RUSTC=$(objtree)/$(obj)/test/rustc_sysroot $(CARGO) $(cargo_quiet) \ 248 test -Zbuild-std --target $(rustc_host_target) \ 249 --manifest-path $(objtree)/$(obj)/test/dummy/Cargo.toml; \ 250 rm $(objtree)/$(obj)/test/sysroot/lib/rustlib/$(rustc_host_target)/lib/*; \ 251 cp $(objtree)/$(obj)/test/dummy/target/$(rustc_host_target)/debug/deps/* \ 252 $(objtree)/$(obj)/test/sysroot/lib/rustlib/$(rustc_host_target)/lib 253 254rusttest-prepare: FORCE 255 $(call if_changed,rustsysroot) 256 257rusttest-macros: private rustc_target_flags = --extern proc_macro 258rusttest-macros: private rustdoc_test_target_flags = --crate-type proc-macro 259rusttest-macros: $(src)/macros/lib.rs rusttest-prepare FORCE 260 $(call if_changed,rustc_test) 261 $(call if_changed,rustdoc_test) 262 263rusttest-kernel: private rustc_target_flags = --extern alloc \ 264 --extern build_error --extern macros --extern bindings --extern uapi 265rusttest-kernel: $(src)/kernel/lib.rs rusttest-prepare \ 266 rusttestlib-build_error rusttestlib-macros rusttestlib-bindings \ 267 rusttestlib-uapi FORCE 268 $(call if_changed,rustc_test) 269 $(call if_changed,rustc_test_library) 270 271ifdef CONFIG_CC_IS_CLANG 272bindgen_c_flags = $(c_flags) 273else 274# bindgen relies on libclang to parse C. Ideally, bindgen would support a GCC 275# plugin backend and/or the Clang driver would be perfectly compatible with GCC. 276# 277# For the moment, here we are tweaking the flags on the fly. This is a hack, 278# and some kernel configurations may not work (e.g. `GCC_PLUGIN_RANDSTRUCT` 279# if we end up using one of those structs). 280bindgen_skip_c_flags := -mno-fp-ret-in-387 -mpreferred-stack-boundary=% \ 281 -mskip-rax-setup -mgeneral-regs-only -msign-return-address=% \ 282 -mindirect-branch=thunk-extern -mindirect-branch-register \ 283 -mfunction-return=thunk-extern -mrecord-mcount -mabi=lp64 \ 284 -mindirect-branch-cs-prefix -mstack-protector-guard% -mtraceback=no \ 285 -mno-pointers-to-nested-functions -mno-string \ 286 -mno-strict-align -mstrict-align \ 287 -fconserve-stack -falign-jumps=% -falign-loops=% \ 288 -femit-struct-debug-baseonly -fno-ipa-cp-clone -fno-ipa-sra \ 289 -fno-partial-inlining -fplugin-arg-arm_ssp_per_task_plugin-% \ 290 -fno-reorder-blocks -fno-allow-store-data-races -fasan-shadow-offset=% \ 291 -fzero-call-used-regs=% -fno-stack-clash-protection \ 292 -fno-inline-functions-called-once -fsanitize=bounds-strict \ 293 -fstrict-flex-arrays=% \ 294 --param=% --param asan-% 295 296# Derived from `scripts/Makefile.clang`. 297BINDGEN_TARGET_x86 := x86_64-linux-gnu 298BINDGEN_TARGET := $(BINDGEN_TARGET_$(SRCARCH)) 299 300# All warnings are inhibited since GCC builds are very experimental, 301# many GCC warnings are not supported by Clang, they may only appear in 302# some configurations, with new GCC versions, etc. 303bindgen_extra_c_flags = -w --target=$(BINDGEN_TARGET) 304 305# Auto variable zero-initialization requires an additional special option with 306# clang that is going to be removed sometime in the future (likely in 307# clang-18), so make sure to pass this option only if clang supports it 308# (libclang major version < 16). 309# 310# https://github.com/llvm/llvm-project/issues/44842 311# https://github.com/llvm/llvm-project/blob/llvmorg-16.0.0-rc2/clang/docs/ReleaseNotes.rst#deprecated-compiler-flags 312ifdef CONFIG_INIT_STACK_ALL_ZERO 313libclang_maj_ver=$(shell $(BINDGEN) $(srctree)/scripts/rust_is_available_bindgen_libclang.h 2>&1 | sed -ne 's/.*clang version \([0-9]*\).*/\1/p') 314ifeq ($(shell expr $(libclang_maj_ver) \< 16), 1) 315bindgen_extra_c_flags += -enable-trivial-auto-var-init-zero-knowing-it-will-be-removed-from-clang 316endif 317endif 318 319bindgen_c_flags = $(filter-out $(bindgen_skip_c_flags), $(c_flags)) \ 320 $(bindgen_extra_c_flags) 321endif 322 323ifdef CONFIG_LTO 324bindgen_c_flags_lto = $(filter-out $(CC_FLAGS_LTO), $(bindgen_c_flags)) 325else 326bindgen_c_flags_lto = $(bindgen_c_flags) 327endif 328 329bindgen_c_flags_final = $(bindgen_c_flags_lto) -D__BINDGEN__ 330 331quiet_cmd_bindgen = BINDGEN $@ 332 cmd_bindgen = \ 333 $(BINDGEN) $< $(bindgen_target_flags) \ 334 --use-core --with-derive-default --ctypes-prefix core::ffi --no-layout-tests \ 335 --no-debug '.*' \ 336 -o $@ -- $(bindgen_c_flags_final) -DMODULE \ 337 $(bindgen_target_cflags) $(bindgen_target_extra) 338 339$(obj)/bindings/bindings_generated.rs: private bindgen_target_flags = \ 340 $(shell grep -v '^#\|^$$' $(srctree)/$(src)/bindgen_parameters) 341$(obj)/bindings/bindings_generated.rs: $(src)/bindings/bindings_helper.h \ 342 $(src)/bindgen_parameters FORCE 343 $(call if_changed_dep,bindgen) 344 345$(obj)/uapi/uapi_generated.rs: private bindgen_target_flags = \ 346 $(shell grep -v '^#\|^$$' $(srctree)/$(src)/bindgen_parameters) 347$(obj)/uapi/uapi_generated.rs: $(src)/uapi/uapi_helper.h \ 348 $(src)/bindgen_parameters FORCE 349 $(call if_changed_dep,bindgen) 350 351# See `CFLAGS_REMOVE_helpers.o` above. In addition, Clang on C does not warn 352# with `-Wmissing-declarations` (unlike GCC), so it is not strictly needed here 353# given it is `libclang`; but for consistency, future Clang changes and/or 354# a potential future GCC backend for `bindgen`, we disable it too. 355$(obj)/bindings/bindings_helpers_generated.rs: private bindgen_target_flags = \ 356 --blocklist-type '.*' --allowlist-var '' \ 357 --allowlist-function 'rust_helper_.*' 358$(obj)/bindings/bindings_helpers_generated.rs: private bindgen_target_cflags = \ 359 -I$(objtree)/$(obj) -Wno-missing-prototypes -Wno-missing-declarations 360$(obj)/bindings/bindings_helpers_generated.rs: private bindgen_target_extra = ; \ 361 sed -Ei 's/pub fn rust_helper_([a-zA-Z0-9_]*)/#[link_name="rust_helper_\1"]\n pub fn \1/g' $@ 362$(obj)/bindings/bindings_helpers_generated.rs: $(src)/helpers.c FORCE 363 $(call if_changed_dep,bindgen) 364 365quiet_cmd_exports = EXPORTS $@ 366 cmd_exports = \ 367 $(NM) -p --defined-only $< \ 368 | grep -E ' (T|R|D) ' | cut -d ' ' -f 3 \ 369 | xargs -Isymbol \ 370 echo 'EXPORT_SYMBOL_RUST_GPL(symbol);' > $@ 371 372$(obj)/exports_core_generated.h: $(obj)/core.o FORCE 373 $(call if_changed,exports) 374 375$(obj)/exports_alloc_generated.h: $(obj)/alloc.o FORCE 376 $(call if_changed,exports) 377 378$(obj)/exports_bindings_generated.h: $(obj)/bindings.o FORCE 379 $(call if_changed,exports) 380 381$(obj)/exports_kernel_generated.h: $(obj)/kernel.o FORCE 382 $(call if_changed,exports) 383 384quiet_cmd_rustc_procmacro = $(RUSTC_OR_CLIPPY_QUIET) P $@ 385 cmd_rustc_procmacro = \ 386 $(RUSTC_OR_CLIPPY) $(rust_common_flags) \ 387 --emit=dep-info=$(depfile) --emit=link=$@ --extern proc_macro \ 388 --crate-type proc-macro \ 389 --crate-name $(patsubst lib%.so,%,$(notdir $@)) $< 390 391# Procedural macros can only be used with the `rustc` that compiled it. 392# Therefore, to get `libmacros.so` automatically recompiled when the compiler 393# version changes, we add `core.o` as a dependency (even if it is not needed). 394$(obj)/libmacros.so: $(src)/macros/lib.rs $(obj)/core.o FORCE 395 $(call if_changed_dep,rustc_procmacro) 396 397quiet_cmd_rustc_library = $(if $(skip_clippy),RUSTC,$(RUSTC_OR_CLIPPY_QUIET)) L $@ 398 cmd_rustc_library = \ 399 OBJTREE=$(abspath $(objtree)) \ 400 $(if $(skip_clippy),$(RUSTC),$(RUSTC_OR_CLIPPY)) \ 401 $(filter-out $(skip_flags),$(rust_flags) $(rustc_target_flags)) \ 402 --emit=dep-info=$(depfile) --emit=obj=$@ \ 403 --emit=metadata=$(dir $@)$(patsubst %.o,lib%.rmeta,$(notdir $@)) \ 404 --crate-type rlib -L$(objtree)/$(obj) \ 405 --crate-name $(patsubst %.o,%,$(notdir $@)) $< \ 406 $(if $(rustc_objcopy),;$(OBJCOPY) $(rustc_objcopy) $@) 407 408rust-analyzer: 409 $(Q)$(srctree)/scripts/generate_rust_analyzer.py \ 410 --cfgs='core=$(core-cfgs)' --cfgs='alloc=$(alloc-cfgs)' \ 411 $(abs_srctree) $(abs_objtree) \ 412 $(RUST_LIB_SRC) $(KBUILD_EXTMOD) > \ 413 $(if $(KBUILD_EXTMOD),$(extmod_prefix),$(objtree))/rust-project.json 414 415redirect-intrinsics = \ 416 __addsf3 __eqsf2 __gesf2 __lesf2 __ltsf2 __mulsf3 __nesf2 __unordsf2 \ 417 __adddf3 __ledf2 __ltdf2 __muldf3 __unorddf2 \ 418 __muloti4 __multi3 \ 419 __udivmodti4 __udivti3 __umodti3 420 421ifneq ($(or $(CONFIG_ARM64),$(and $(CONFIG_RISCV),$(CONFIG_64BIT))),) 422 # These intrinsics are defined for ARM64 and RISCV64 423 redirect-intrinsics += \ 424 __ashrti3 \ 425 __ashlti3 __lshrti3 426endif 427 428$(obj)/core.o: private skip_clippy = 1 429$(obj)/core.o: private skip_flags = -Dunreachable_pub 430$(obj)/core.o: private rustc_objcopy = $(foreach sym,$(redirect-intrinsics),--redefine-sym $(sym)=__rust$(sym)) 431$(obj)/core.o: private rustc_target_flags = $(core-cfgs) 432$(obj)/core.o: $(RUST_LIB_SRC)/core/src/lib.rs scripts/target.json FORCE 433 $(call if_changed_dep,rustc_library) 434 435$(obj)/compiler_builtins.o: private rustc_objcopy = -w -W '__*' 436$(obj)/compiler_builtins.o: $(src)/compiler_builtins.rs $(obj)/core.o FORCE 437 $(call if_changed_dep,rustc_library) 438 439$(obj)/alloc.o: private skip_clippy = 1 440$(obj)/alloc.o: private skip_flags = -Dunreachable_pub 441$(obj)/alloc.o: private rustc_target_flags = $(alloc-cfgs) 442$(obj)/alloc.o: $(src)/alloc/lib.rs $(obj)/compiler_builtins.o FORCE 443 $(call if_changed_dep,rustc_library) 444 445$(obj)/build_error.o: $(src)/build_error.rs $(obj)/compiler_builtins.o FORCE 446 $(call if_changed_dep,rustc_library) 447 448$(obj)/bindings.o: $(src)/bindings/lib.rs \ 449 $(obj)/compiler_builtins.o \ 450 $(obj)/bindings/bindings_generated.rs \ 451 $(obj)/bindings/bindings_helpers_generated.rs FORCE 452 $(call if_changed_dep,rustc_library) 453 454$(obj)/uapi.o: $(src)/uapi/lib.rs \ 455 $(obj)/compiler_builtins.o \ 456 $(obj)/uapi/uapi_generated.rs FORCE 457 $(call if_changed_dep,rustc_library) 458 459$(obj)/kernel.o: private rustc_target_flags = --extern alloc \ 460 --extern build_error --extern macros --extern bindings --extern uapi 461$(obj)/kernel.o: $(src)/kernel/lib.rs $(obj)/alloc.o $(obj)/build_error.o \ 462 $(obj)/libmacros.so $(obj)/bindings.o $(obj)/uapi.o FORCE 463 $(call if_changed_dep,rustc_library) 464 465endif # CONFIG_RUST 466
