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 MAKEFLAGS= $(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_global_oom_handling \ 65 --cfg no_rc \ 66 --cfg no_sync 67 68quiet_cmd_rustdoc = RUSTDOC $(if $(rustdoc_host),H, ) $< 69 cmd_rustdoc = \ 70 OBJTREE=$(abspath $(objtree)) \ 71 $(RUSTDOC) $(if $(rustdoc_host),$(rust_common_flags),$(rust_flags)) \ 72 $(rustc_target_flags) -L$(objtree)/$(obj) \ 73 --output $(rustdoc_output) \ 74 --crate-name $(subst rustdoc-,,$@) \ 75 $(if $(rustdoc_host),,--sysroot=/dev/null) \ 76 @$(objtree)/include/generated/rustc_cfg $< 77 78# The `html_logo_url` and `html_favicon_url` forms of the `doc` attribute 79# can be used to specify a custom logo. However: 80# - The given value is used as-is, thus it cannot be relative or a local file 81# (unlike the non-custom case) since the generated docs have subfolders. 82# - It requires adding it to every crate. 83# - It requires changing `core` which comes from the sysroot. 84# 85# Using `-Zcrate-attr` would solve the last two points, but not the first. 86# The https://github.com/rust-lang/rfcs/pull/3226 RFC suggests two new 87# command-like flags to solve the issue. Meanwhile, we use the non-custom case 88# and then retouch the generated files. 89rustdoc: rustdoc-core rustdoc-macros rustdoc-compiler_builtins \ 90 rustdoc-alloc rustdoc-kernel 91 $(Q)cp $(srctree)/Documentation/images/logo.svg $(rustdoc_output)/static.files/ 92 $(Q)cp $(srctree)/Documentation/images/COPYING-logo $(rustdoc_output)/static.files/ 93 $(Q)find $(rustdoc_output) -name '*.html' -type f -print0 | xargs -0 sed -Ei \ 94 -e 's:rust-logo-[0-9a-f]+\.svg:logo.svg:g' \ 95 -e 's:favicon-[0-9a-f]+\.svg:logo.svg:g' \ 96 -e 's:<link rel="alternate icon" type="image/png" href="[/.]+/static\.files/favicon-(16x16|32x32)-[0-9a-f]+\.png">::g' \ 97 -e 's:<a href="srctree/([^"]+)">:<a href="$(realpath $(srctree))/\1">:g' 98 $(Q)for f in $(rustdoc_output)/static.files/rustdoc-*.css; do \ 99 echo ".logo-container > img { object-fit: contain; }" >> $$f; done 100 101rustdoc-macros: private rustdoc_host = yes 102rustdoc-macros: private rustc_target_flags = --crate-type proc-macro \ 103 --extern proc_macro 104rustdoc-macros: $(src)/macros/lib.rs FORCE 105 +$(call if_changed,rustdoc) 106 107rustdoc-core: private rustc_target_flags = $(core-cfgs) 108rustdoc-core: $(RUST_LIB_SRC)/core/src/lib.rs FORCE 109 +$(call if_changed,rustdoc) 110 111rustdoc-compiler_builtins: $(src)/compiler_builtins.rs rustdoc-core FORCE 112 +$(call if_changed,rustdoc) 113 114# We need to allow `rustdoc::broken_intra_doc_links` because some 115# `no_global_oom_handling` functions refer to non-`no_global_oom_handling` 116# functions. Ideally `rustdoc` would have a way to distinguish broken links 117# due to things that are "configured out" vs. entirely non-existing ones. 118rustdoc-alloc: private rustc_target_flags = $(alloc-cfgs) \ 119 -Arustdoc::broken_intra_doc_links 120rustdoc-alloc: $(RUST_LIB_SRC)/alloc/src/lib.rs rustdoc-core rustdoc-compiler_builtins FORCE 121 +$(call if_changed,rustdoc) 122 123rustdoc-kernel: private rustc_target_flags = --extern alloc \ 124 --extern build_error --extern macros=$(objtree)/$(obj)/libmacros.so \ 125 --extern bindings --extern uapi 126rustdoc-kernel: $(src)/kernel/lib.rs rustdoc-core rustdoc-macros \ 127 rustdoc-compiler_builtins rustdoc-alloc $(obj)/libmacros.so \ 128 $(obj)/bindings.o FORCE 129 +$(call if_changed,rustdoc) 130 131quiet_cmd_rustc_test_library = RUSTC TL $< 132 cmd_rustc_test_library = \ 133 OBJTREE=$(abspath $(objtree)) \ 134 $(RUSTC) $(rust_common_flags) \ 135 @$(objtree)/include/generated/rustc_cfg $(rustc_target_flags) \ 136 --crate-type $(if $(rustc_test_library_proc),proc-macro,rlib) \ 137 --out-dir $(objtree)/$(obj)/test --cfg testlib \ 138 --sysroot $(objtree)/$(obj)/test/sysroot \ 139 -L$(objtree)/$(obj)/test \ 140 --crate-name $(subst rusttest-,,$(subst rusttestlib-,,$@)) $< 141 142rusttestlib-build_error: $(src)/build_error.rs rusttest-prepare FORCE 143 +$(call if_changed,rustc_test_library) 144 145rusttestlib-macros: private rustc_target_flags = --extern proc_macro 146rusttestlib-macros: private rustc_test_library_proc = yes 147rusttestlib-macros: $(src)/macros/lib.rs rusttest-prepare FORCE 148 +$(call if_changed,rustc_test_library) 149 150rusttestlib-bindings: $(src)/bindings/lib.rs rusttest-prepare FORCE 151 +$(call if_changed,rustc_test_library) 152 153rusttestlib-uapi: $(src)/uapi/lib.rs rusttest-prepare FORCE 154 +$(call if_changed,rustc_test_library) 155 156quiet_cmd_rustdoc_test = RUSTDOC T $< 157 cmd_rustdoc_test = \ 158 OBJTREE=$(abspath $(objtree)) \ 159 $(RUSTDOC) --test $(rust_common_flags) \ 160 @$(objtree)/include/generated/rustc_cfg \ 161 $(rustc_target_flags) $(rustdoc_test_target_flags) \ 162 --sysroot $(objtree)/$(obj)/test/sysroot $(rustdoc_test_quiet) \ 163 -L$(objtree)/$(obj)/test --output $(rustdoc_output) \ 164 --crate-name $(subst rusttest-,,$@) $< 165 166quiet_cmd_rustdoc_test_kernel = RUSTDOC TK $< 167 cmd_rustdoc_test_kernel = \ 168 rm -rf $(objtree)/$(obj)/test/doctests/kernel; \ 169 mkdir -p $(objtree)/$(obj)/test/doctests/kernel; \ 170 OBJTREE=$(abspath $(objtree)) \ 171 $(RUSTDOC) --test $(rust_flags) \ 172 @$(objtree)/include/generated/rustc_cfg \ 173 -L$(objtree)/$(obj) --extern alloc --extern kernel \ 174 --extern build_error --extern macros \ 175 --extern bindings --extern uapi \ 176 --no-run --crate-name kernel -Zunstable-options \ 177 --sysroot=/dev/null \ 178 --test-builder $(objtree)/scripts/rustdoc_test_builder \ 179 $< $(rustdoc_test_kernel_quiet); \ 180 $(objtree)/scripts/rustdoc_test_gen 181 182%/doctests_kernel_generated.rs %/doctests_kernel_generated_kunit.c: \ 183 $(src)/kernel/lib.rs $(obj)/kernel.o \ 184 $(objtree)/scripts/rustdoc_test_builder \ 185 $(objtree)/scripts/rustdoc_test_gen FORCE 186 +$(call if_changed,rustdoc_test_kernel) 187 188# We cannot use `-Zpanic-abort-tests` because some tests are dynamic, 189# so for the moment we skip `-Cpanic=abort`. 190quiet_cmd_rustc_test = RUSTC T $< 191 cmd_rustc_test = \ 192 OBJTREE=$(abspath $(objtree)) \ 193 $(RUSTC) --test $(rust_common_flags) \ 194 @$(objtree)/include/generated/rustc_cfg \ 195 $(rustc_target_flags) --out-dir $(objtree)/$(obj)/test \ 196 --sysroot $(objtree)/$(obj)/test/sysroot \ 197 -L$(objtree)/$(obj)/test \ 198 --crate-name $(subst rusttest-,,$@) $<; \ 199 $(objtree)/$(obj)/test/$(subst rusttest-,,$@) $(rust_test_quiet) \ 200 $(rustc_test_run_flags) 201 202rusttest: rusttest-macros rusttest-kernel 203 204# This prepares a custom sysroot with our custom `alloc` instead of 205# the standard one. 206# 207# This requires several hacks: 208# - Unlike `core` and `alloc`, `std` depends on more than a dozen crates, 209# including third-party crates that need to be downloaded, plus custom 210# `build.rs` steps. Thus hardcoding things here is not maintainable. 211# - `cargo` knows how to build the standard library, but it is an unstable 212# feature so far (`-Zbuild-std`). 213# - `cargo` only considers the use case of building the standard library 214# to use it in a given package. Thus we need to create a dummy package 215# and pick the generated libraries from there. 216# - The usual ways of modifying the dependency graph in `cargo` do not seem 217# to apply for the `-Zbuild-std` steps, thus we have to mislead it 218# by modifying the sources in the sysroot. 219# - To avoid messing with the user's Rust installation, we create a clone 220# of the sysroot. However, `cargo` ignores `RUSTFLAGS` in the `-Zbuild-std` 221# steps, thus we use a wrapper binary passed via `RUSTC` to pass the flag. 222# 223# In the future, we hope to avoid the whole ordeal by either: 224# - Making the `test` crate not depend on `std` (either improving upstream 225# or having our own custom crate). 226# - Making the tests run in kernel space (requires the previous point). 227# - Making `std` and friends be more like a "normal" crate, so that 228# `-Zbuild-std` and related hacks are not needed. 229quiet_cmd_rustsysroot = RUSTSYSROOT 230 cmd_rustsysroot = \ 231 rm -rf $(objtree)/$(obj)/test; \ 232 mkdir -p $(objtree)/$(obj)/test; \ 233 cp -a $(rustc_sysroot) $(objtree)/$(obj)/test/sysroot; \ 234 echo '\#!/bin/sh' > $(objtree)/$(obj)/test/rustc_sysroot; \ 235 echo "$(RUSTC) --sysroot=$(abspath $(objtree)/$(obj)/test/sysroot) \"\$$@\"" \ 236 >> $(objtree)/$(obj)/test/rustc_sysroot; \ 237 chmod u+x $(objtree)/$(obj)/test/rustc_sysroot; \ 238 $(CARGO) -q new $(objtree)/$(obj)/test/dummy; \ 239 RUSTC=$(objtree)/$(obj)/test/rustc_sysroot $(CARGO) $(cargo_quiet) \ 240 test -Zbuild-std --target $(rustc_host_target) \ 241 --manifest-path $(objtree)/$(obj)/test/dummy/Cargo.toml; \ 242 rm $(objtree)/$(obj)/test/sysroot/lib/rustlib/$(rustc_host_target)/lib/*; \ 243 cp $(objtree)/$(obj)/test/dummy/target/$(rustc_host_target)/debug/deps/* \ 244 $(objtree)/$(obj)/test/sysroot/lib/rustlib/$(rustc_host_target)/lib 245 246rusttest-prepare: FORCE 247 +$(call if_changed,rustsysroot) 248 249rusttest-macros: private rustc_target_flags = --extern proc_macro 250rusttest-macros: private rustdoc_test_target_flags = --crate-type proc-macro 251rusttest-macros: $(src)/macros/lib.rs rusttest-prepare FORCE 252 +$(call if_changed,rustc_test) 253 +$(call if_changed,rustdoc_test) 254 255rusttest-kernel: private rustc_target_flags = --extern alloc \ 256 --extern build_error --extern macros --extern bindings --extern uapi 257rusttest-kernel: $(src)/kernel/lib.rs rusttest-prepare \ 258 rusttestlib-build_error rusttestlib-macros rusttestlib-bindings \ 259 rusttestlib-uapi FORCE 260 +$(call if_changed,rustc_test) 261 +$(call if_changed,rustc_test_library) 262 263ifdef CONFIG_CC_IS_CLANG 264bindgen_c_flags = $(c_flags) 265else 266# bindgen relies on libclang to parse C. Ideally, bindgen would support a GCC 267# plugin backend and/or the Clang driver would be perfectly compatible with GCC. 268# 269# For the moment, here we are tweaking the flags on the fly. This is a hack, 270# and some kernel configurations may not work (e.g. `GCC_PLUGIN_RANDSTRUCT` 271# if we end up using one of those structs). 272bindgen_skip_c_flags := -mno-fp-ret-in-387 -mpreferred-stack-boundary=% \ 273 -mskip-rax-setup -mgeneral-regs-only -msign-return-address=% \ 274 -mindirect-branch=thunk-extern -mindirect-branch-register \ 275 -mfunction-return=thunk-extern -mrecord-mcount -mabi=lp64 \ 276 -mindirect-branch-cs-prefix -mstack-protector-guard% -mtraceback=no \ 277 -mno-pointers-to-nested-functions -mno-string \ 278 -mno-strict-align -mstrict-align \ 279 -fconserve-stack -falign-jumps=% -falign-loops=% \ 280 -femit-struct-debug-baseonly -fno-ipa-cp-clone -fno-ipa-sra \ 281 -fno-partial-inlining -fplugin-arg-arm_ssp_per_task_plugin-% \ 282 -fno-reorder-blocks -fno-allow-store-data-races -fasan-shadow-offset=% \ 283 -fzero-call-used-regs=% -fno-stack-clash-protection \ 284 -fno-inline-functions-called-once -fsanitize=bounds-strict \ 285 -fstrict-flex-arrays=% \ 286 --param=% --param asan-% 287 288# Derived from `scripts/Makefile.clang`. 289BINDGEN_TARGET_x86 := x86_64-linux-gnu 290BINDGEN_TARGET_arm64 := aarch64-linux-gnu 291BINDGEN_TARGET := $(BINDGEN_TARGET_$(SRCARCH)) 292 293# All warnings are inhibited since GCC builds are very experimental, 294# many GCC warnings are not supported by Clang, they may only appear in 295# some configurations, with new GCC versions, etc. 296bindgen_extra_c_flags = -w --target=$(BINDGEN_TARGET) 297 298# Auto variable zero-initialization requires an additional special option with 299# clang that is going to be removed sometime in the future (likely in 300# clang-18), so make sure to pass this option only if clang supports it 301# (libclang major version < 16). 302# 303# https://github.com/llvm/llvm-project/issues/44842 304# https://github.com/llvm/llvm-project/blob/llvmorg-16.0.0-rc2/clang/docs/ReleaseNotes.rst#deprecated-compiler-flags 305ifdef CONFIG_INIT_STACK_ALL_ZERO 306libclang_maj_ver=$(shell $(BINDGEN) $(srctree)/scripts/rust_is_available_bindgen_libclang.h 2>&1 | sed -ne 's/.*clang version \([0-9]*\).*/\1/p') 307ifeq ($(shell expr $(libclang_maj_ver) \< 16), 1) 308bindgen_extra_c_flags += -enable-trivial-auto-var-init-zero-knowing-it-will-be-removed-from-clang 309endif 310endif 311 312bindgen_c_flags = $(filter-out $(bindgen_skip_c_flags), $(c_flags)) \ 313 $(bindgen_extra_c_flags) 314endif 315 316ifdef CONFIG_LTO 317bindgen_c_flags_lto = $(filter-out $(CC_FLAGS_LTO), $(bindgen_c_flags)) 318else 319bindgen_c_flags_lto = $(bindgen_c_flags) 320endif 321 322bindgen_c_flags_final = $(bindgen_c_flags_lto) -D__BINDGEN__ 323 324quiet_cmd_bindgen = BINDGEN $@ 325 cmd_bindgen = \ 326 $(BINDGEN) $< $(bindgen_target_flags) \ 327 --use-core --with-derive-default --ctypes-prefix core::ffi --no-layout-tests \ 328 --no-debug '.*' \ 329 -o $@ -- $(bindgen_c_flags_final) -DMODULE \ 330 $(bindgen_target_cflags) $(bindgen_target_extra) 331 332$(obj)/bindings/bindings_generated.rs: private bindgen_target_flags = \ 333 $(shell grep -Ev '^#|^$$' $(srctree)/$(src)/bindgen_parameters) 334$(obj)/bindings/bindings_generated.rs: private bindgen_target_extra = ; \ 335 sed -Ei 's/pub const RUST_CONST_HELPER_([a-zA-Z0-9_]*)/pub const \1/g' $@ 336$(obj)/bindings/bindings_generated.rs: $(src)/bindings/bindings_helper.h \ 337 $(src)/bindgen_parameters FORCE 338 $(call if_changed_dep,bindgen) 339 340$(obj)/uapi/uapi_generated.rs: private bindgen_target_flags = \ 341 $(shell grep -Ev '^#|^$$' $(srctree)/$(src)/bindgen_parameters) 342$(obj)/uapi/uapi_generated.rs: $(src)/uapi/uapi_helper.h \ 343 $(src)/bindgen_parameters FORCE 344 $(call if_changed_dep,bindgen) 345 346# See `CFLAGS_REMOVE_helpers.o` above. In addition, Clang on C does not warn 347# with `-Wmissing-declarations` (unlike GCC), so it is not strictly needed here 348# given it is `libclang`; but for consistency, future Clang changes and/or 349# a potential future GCC backend for `bindgen`, we disable it too. 350$(obj)/bindings/bindings_helpers_generated.rs: private bindgen_target_flags = \ 351 --blocklist-type '.*' --allowlist-var '' \ 352 --allowlist-function 'rust_helper_.*' 353$(obj)/bindings/bindings_helpers_generated.rs: private bindgen_target_cflags = \ 354 -I$(objtree)/$(obj) -Wno-missing-prototypes -Wno-missing-declarations 355$(obj)/bindings/bindings_helpers_generated.rs: private bindgen_target_extra = ; \ 356 sed -Ei 's/pub fn rust_helper_([a-zA-Z0-9_]*)/#[link_name="rust_helper_\1"]\n pub fn \1/g' $@ 357$(obj)/bindings/bindings_helpers_generated.rs: $(src)/helpers.c FORCE 358 $(call if_changed_dep,bindgen) 359 360quiet_cmd_exports = EXPORTS $@ 361 cmd_exports = \ 362 $(NM) -p --defined-only $< \ 363 | awk '/ (T|R|D) / {printf "EXPORT_SYMBOL_RUST_GPL(%s);\n",$$3}' > $@ 364 365$(obj)/exports_core_generated.h: $(obj)/core.o FORCE 366 $(call if_changed,exports) 367 368$(obj)/exports_alloc_generated.h: $(obj)/alloc.o FORCE 369 $(call if_changed,exports) 370 371$(obj)/exports_bindings_generated.h: $(obj)/bindings.o FORCE 372 $(call if_changed,exports) 373 374$(obj)/exports_kernel_generated.h: $(obj)/kernel.o FORCE 375 $(call if_changed,exports) 376 377quiet_cmd_rustc_procmacro = $(RUSTC_OR_CLIPPY_QUIET) P $@ 378 cmd_rustc_procmacro = \ 379 $(RUSTC_OR_CLIPPY) $(rust_common_flags) \ 380 -Clinker-flavor=gcc -Clinker=$(HOSTCC) \ 381 -Clink-args='$(call escsq,$(KBUILD_HOSTLDFLAGS))' \ 382 --emit=dep-info=$(depfile) --emit=link=$@ --extern proc_macro \ 383 --crate-type proc-macro \ 384 --crate-name $(patsubst lib%.so,%,$(notdir $@)) $< 385 386# Procedural macros can only be used with the `rustc` that compiled it. 387# Therefore, to get `libmacros.so` automatically recompiled when the compiler 388# version changes, we add `core.o` as a dependency (even if it is not needed). 389$(obj)/libmacros.so: $(src)/macros/lib.rs $(obj)/core.o FORCE 390 +$(call if_changed_dep,rustc_procmacro) 391 392quiet_cmd_rustc_library = $(if $(skip_clippy),RUSTC,$(RUSTC_OR_CLIPPY_QUIET)) L $@ 393 cmd_rustc_library = \ 394 OBJTREE=$(abspath $(objtree)) \ 395 $(if $(skip_clippy),$(RUSTC),$(RUSTC_OR_CLIPPY)) \ 396 $(filter-out $(skip_flags),$(rust_flags) $(rustc_target_flags)) \ 397 --emit=dep-info=$(depfile) --emit=obj=$@ \ 398 --emit=metadata=$(dir $@)$(patsubst %.o,lib%.rmeta,$(notdir $@)) \ 399 --crate-type rlib -L$(objtree)/$(obj) \ 400 --crate-name $(patsubst %.o,%,$(notdir $@)) $< \ 401 --sysroot=/dev/null \ 402 $(if $(rustc_objcopy),;$(OBJCOPY) $(rustc_objcopy) $@) 403 404rust-analyzer: 405 $(Q)$(srctree)/scripts/generate_rust_analyzer.py \ 406 --cfgs='core=$(core-cfgs)' --cfgs='alloc=$(alloc-cfgs)' \ 407 $(realpath $(srctree)) $(realpath $(objtree)) \ 408 $(RUST_LIB_SRC) $(KBUILD_EXTMOD) > \ 409 $(if $(KBUILD_EXTMOD),$(extmod_prefix),$(objtree))/rust-project.json 410 411redirect-intrinsics = \ 412 __addsf3 __eqsf2 __gesf2 __lesf2 __ltsf2 __mulsf3 __nesf2 __unordsf2 \ 413 __adddf3 __ledf2 __ltdf2 __muldf3 __unorddf2 \ 414 __muloti4 __multi3 \ 415 __udivmodti4 __udivti3 __umodti3 416 417ifneq ($(or $(CONFIG_ARM64),$(and $(CONFIG_RISCV),$(CONFIG_64BIT))),) 418 # These intrinsics are defined for ARM64 and RISCV64 419 redirect-intrinsics += \ 420 __ashrti3 \ 421 __ashlti3 __lshrti3 422endif 423 424$(obj)/core.o: private skip_clippy = 1 425$(obj)/core.o: private skip_flags = -Dunreachable_pub 426$(obj)/core.o: private rustc_objcopy = $(foreach sym,$(redirect-intrinsics),--redefine-sym $(sym)=__rust$(sym)) 427$(obj)/core.o: private rustc_target_flags = $(core-cfgs) 428$(obj)/core.o: $(RUST_LIB_SRC)/core/src/lib.rs FORCE 429 +$(call if_changed_dep,rustc_library) 430ifneq ($(or $(CONFIG_X86_64),$(CONFIG_LOONGARCH)),) 431$(obj)/core.o: scripts/target.json 432endif 433 434$(obj)/compiler_builtins.o: private rustc_objcopy = -w -W '__*' 435$(obj)/compiler_builtins.o: $(src)/compiler_builtins.rs $(obj)/core.o FORCE 436 +$(call if_changed_dep,rustc_library) 437 438$(obj)/alloc.o: private skip_clippy = 1 439$(obj)/alloc.o: private skip_flags = -Dunreachable_pub 440$(obj)/alloc.o: private rustc_target_flags = $(alloc-cfgs) 441$(obj)/alloc.o: $(RUST_LIB_SRC)/alloc/src/lib.rs $(obj)/compiler_builtins.o FORCE 442 +$(call if_changed_dep,rustc_library) 443 444$(obj)/build_error.o: $(src)/build_error.rs $(obj)/compiler_builtins.o FORCE 445 +$(call if_changed_dep,rustc_library) 446 447$(obj)/bindings.o: $(src)/bindings/lib.rs \ 448 $(obj)/compiler_builtins.o \ 449 $(obj)/bindings/bindings_generated.rs \ 450 $(obj)/bindings/bindings_helpers_generated.rs FORCE 451 +$(call if_changed_dep,rustc_library) 452 453$(obj)/uapi.o: $(src)/uapi/lib.rs \ 454 $(obj)/compiler_builtins.o \ 455 $(obj)/uapi/uapi_generated.rs FORCE 456 +$(call if_changed_dep,rustc_library) 457 458$(obj)/kernel.o: private rustc_target_flags = --extern alloc \ 459 --extern build_error --extern macros --extern bindings --extern uapi 460$(obj)/kernel.o: $(src)/kernel/lib.rs $(obj)/alloc.o $(obj)/build_error.o \ 461 $(obj)/libmacros.so $(obj)/bindings.o $(obj)/uapi.o FORCE 462 +$(call if_changed_dep,rustc_library) 463 464endif # CONFIG_RUST 465
