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_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 $(if $(rustdoc_host),,--sysroot=/dev/null) \ 82 @$(objtree)/include/generated/rustc_cfg $< 83 84# The `html_logo_url` and `html_favicon_url` forms of the `doc` attribute 85# can be used to specify a custom logo. However: 86# - The given value is used as-is, thus it cannot be relative or a local file 87# (unlike the non-custom case) since the generated docs have subfolders. 88# - It requires adding it to every crate. 89# - It requires changing `core` which comes from the sysroot. 90# 91# Using `-Zcrate-attr` would solve the last two points, but not the first. 92# The https://github.com/rust-lang/rfcs/pull/3226 RFC suggests two new 93# command-like flags to solve the issue. Meanwhile, we use the non-custom case 94# and then retouch the generated files. 95rustdoc: rustdoc-core rustdoc-macros rustdoc-compiler_builtins \ 96 rustdoc-alloc rustdoc-kernel 97 $(Q)cp $(srctree)/Documentation/images/logo.svg $(rustdoc_output)/static.files/ 98 $(Q)cp $(srctree)/Documentation/images/COPYING-logo $(rustdoc_output)/static.files/ 99 $(Q)find $(rustdoc_output) -name '*.html' -type f -print0 | xargs -0 sed -Ei \ 100 -e 's:rust-logo-[0-9a-f]+\.svg:logo.svg:g' \ 101 -e 's:favicon-[0-9a-f]+\.svg:logo.svg:g' \ 102 -e 's:<link rel="alternate icon" type="image/png" href="[/.]+/static\.files/favicon-(16x16|32x32)-[0-9a-f]+\.png">::g' \ 103 -e 's:<a href="srctree/([^"]+)">:<a href="$(realpath $(srctree))/\1">:g' 104 $(Q)for f in $(rustdoc_output)/static.files/rustdoc-*.css; do \ 105 echo ".logo-container > img { object-fit: contain; }" >> $$f; done 106 107rustdoc-macros: private rustdoc_host = yes 108rustdoc-macros: private rustc_target_flags = --crate-type proc-macro \ 109 --extern proc_macro 110rustdoc-macros: $(src)/macros/lib.rs FORCE 111 +$(call if_changed,rustdoc) 112 113rustdoc-core: private rustc_target_flags = $(core-cfgs) 114rustdoc-core: $(RUST_LIB_SRC)/core/src/lib.rs FORCE 115 +$(call if_changed,rustdoc) 116 117rustdoc-compiler_builtins: $(src)/compiler_builtins.rs rustdoc-core FORCE 118 +$(call if_changed,rustdoc) 119 120# We need to allow `rustdoc::broken_intra_doc_links` because some 121# `no_global_oom_handling` functions refer to non-`no_global_oom_handling` 122# functions. Ideally `rustdoc` would have a way to distinguish broken links 123# due to things that are "configured out" vs. entirely non-existing ones. 124rustdoc-alloc: private rustc_target_flags = $(alloc-cfgs) \ 125 -Arustdoc::broken_intra_doc_links 126rustdoc-alloc: $(src)/alloc/lib.rs rustdoc-core rustdoc-compiler_builtins FORCE 127 +$(call if_changed,rustdoc) 128 129rustdoc-kernel: private rustc_target_flags = --extern alloc \ 130 --extern build_error --extern macros=$(objtree)/$(obj)/libmacros.so \ 131 --extern bindings --extern uapi 132rustdoc-kernel: $(src)/kernel/lib.rs rustdoc-core rustdoc-macros \ 133 rustdoc-compiler_builtins rustdoc-alloc $(obj)/libmacros.so \ 134 $(obj)/bindings.o FORCE 135 +$(call if_changed,rustdoc) 136 137quiet_cmd_rustc_test_library = RUSTC TL $< 138 cmd_rustc_test_library = \ 139 OBJTREE=$(abspath $(objtree)) \ 140 $(RUSTC) $(rust_common_flags) \ 141 @$(objtree)/include/generated/rustc_cfg $(rustc_target_flags) \ 142 --crate-type $(if $(rustc_test_library_proc),proc-macro,rlib) \ 143 --out-dir $(objtree)/$(obj)/test --cfg testlib \ 144 --sysroot $(objtree)/$(obj)/test/sysroot \ 145 -L$(objtree)/$(obj)/test \ 146 --crate-name $(subst rusttest-,,$(subst rusttestlib-,,$@)) $< 147 148rusttestlib-build_error: $(src)/build_error.rs rusttest-prepare FORCE 149 +$(call if_changed,rustc_test_library) 150 151rusttestlib-macros: private rustc_target_flags = --extern proc_macro 152rusttestlib-macros: private rustc_test_library_proc = yes 153rusttestlib-macros: $(src)/macros/lib.rs rusttest-prepare FORCE 154 +$(call if_changed,rustc_test_library) 155 156rusttestlib-bindings: $(src)/bindings/lib.rs rusttest-prepare FORCE 157 +$(call if_changed,rustc_test_library) 158 159rusttestlib-uapi: $(src)/uapi/lib.rs rusttest-prepare FORCE 160 +$(call if_changed,rustc_test_library) 161 162quiet_cmd_rustdoc_test = RUSTDOC T $< 163 cmd_rustdoc_test = \ 164 OBJTREE=$(abspath $(objtree)) \ 165 $(RUSTDOC) --test $(rust_common_flags) \ 166 @$(objtree)/include/generated/rustc_cfg \ 167 $(rustc_target_flags) $(rustdoc_test_target_flags) \ 168 --sysroot $(objtree)/$(obj)/test/sysroot $(rustdoc_test_quiet) \ 169 -L$(objtree)/$(obj)/test --output $(rustdoc_output) \ 170 --crate-name $(subst rusttest-,,$@) $< 171 172quiet_cmd_rustdoc_test_kernel = RUSTDOC TK $< 173 cmd_rustdoc_test_kernel = \ 174 rm -rf $(objtree)/$(obj)/test/doctests/kernel; \ 175 mkdir -p $(objtree)/$(obj)/test/doctests/kernel; \ 176 OBJTREE=$(abspath $(objtree)) \ 177 $(RUSTDOC) --test $(rust_flags) \ 178 -L$(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 --sysroot=/dev/null \ 183 --test-builder $(objtree)/scripts/rustdoc_test_builder \ 184 $< $(rustdoc_test_kernel_quiet); \ 185 $(objtree)/scripts/rustdoc_test_gen 186 187%/doctests_kernel_generated.rs %/doctests_kernel_generated_kunit.c: \ 188 $(src)/kernel/lib.rs $(obj)/kernel.o \ 189 $(objtree)/scripts/rustdoc_test_builder \ 190 $(objtree)/scripts/rustdoc_test_gen FORCE 191 +$(call if_changed,rustdoc_test_kernel) 192 193# We cannot use `-Zpanic-abort-tests` because some tests are dynamic, 194# so for the moment we skip `-Cpanic=abort`. 195quiet_cmd_rustc_test = RUSTC T $< 196 cmd_rustc_test = \ 197 OBJTREE=$(abspath $(objtree)) \ 198 $(RUSTC) --test $(rust_common_flags) \ 199 @$(objtree)/include/generated/rustc_cfg \ 200 $(rustc_target_flags) --out-dir $(objtree)/$(obj)/test \ 201 --sysroot $(objtree)/$(obj)/test/sysroot \ 202 -L$(objtree)/$(obj)/test \ 203 --crate-name $(subst rusttest-,,$@) $<; \ 204 $(objtree)/$(obj)/test/$(subst rusttest-,,$@) $(rust_test_quiet) \ 205 $(rustc_test_run_flags) 206 207rusttest: rusttest-macros rusttest-kernel 208 209# This prepares a custom sysroot with our custom `alloc` instead of 210# the standard one. 211# 212# This requires several hacks: 213# - Unlike `core` and `alloc`, `std` depends on more than a dozen crates, 214# including third-party crates that need to be downloaded, plus custom 215# `build.rs` steps. Thus hardcoding things here is not maintainable. 216# - `cargo` knows how to build the standard library, but it is an unstable 217# feature so far (`-Zbuild-std`). 218# - `cargo` only considers the use case of building the standard library 219# to use it in a given package. Thus we need to create a dummy package 220# and pick the generated libraries from there. 221# - Since we only keep a subset of upstream `alloc` in-tree, we need 222# to recreate it on the fly by putting our sources on top. 223# - The usual ways of modifying the dependency graph in `cargo` do not seem 224# to apply for the `-Zbuild-std` steps, thus we have to mislead it 225# by modifying the sources in the sysroot. 226# - To avoid messing with the user's Rust installation, we create a clone 227# of the sysroot. However, `cargo` ignores `RUSTFLAGS` in the `-Zbuild-std` 228# steps, thus we use a wrapper binary passed via `RUSTC` to pass the flag. 229# 230# In the future, we hope to avoid the whole ordeal by either: 231# - Making the `test` crate not depend on `std` (either improving upstream 232# or having our own custom crate). 233# - Making the tests run in kernel space (requires the previous point). 234# - Making `std` and friends be more like a "normal" crate, so that 235# `-Zbuild-std` and related hacks are not needed. 236quiet_cmd_rustsysroot = RUSTSYSROOT 237 cmd_rustsysroot = \ 238 rm -rf $(objtree)/$(obj)/test; \ 239 mkdir -p $(objtree)/$(obj)/test; \ 240 cp -a $(rustc_sysroot) $(objtree)/$(obj)/test/sysroot; \ 241 cp -r $(srctree)/$(src)/alloc/* \ 242 $(objtree)/$(obj)/test/sysroot/lib/rustlib/src/rust/library/alloc/src; \ 243 echo '\#!/bin/sh' > $(objtree)/$(obj)/test/rustc_sysroot; \ 244 echo "$(RUSTC) --sysroot=$(abspath $(objtree)/$(obj)/test/sysroot) \"\$$@\"" \ 245 >> $(objtree)/$(obj)/test/rustc_sysroot; \ 246 chmod u+x $(objtree)/$(obj)/test/rustc_sysroot; \ 247 $(CARGO) -q new $(objtree)/$(obj)/test/dummy; \ 248 RUSTC=$(objtree)/$(obj)/test/rustc_sysroot $(CARGO) $(cargo_quiet) \ 249 test -Zbuild-std --target $(rustc_host_target) \ 250 --manifest-path $(objtree)/$(obj)/test/dummy/Cargo.toml; \ 251 rm $(objtree)/$(obj)/test/sysroot/lib/rustlib/$(rustc_host_target)/lib/*; \ 252 cp $(objtree)/$(obj)/test/dummy/target/$(rustc_host_target)/debug/deps/* \ 253 $(objtree)/$(obj)/test/sysroot/lib/rustlib/$(rustc_host_target)/lib 254 255rusttest-prepare: FORCE 256 +$(call if_changed,rustsysroot) 257 258rusttest-macros: private rustc_target_flags = --extern proc_macro 259rusttest-macros: private rustdoc_test_target_flags = --crate-type proc-macro 260rusttest-macros: $(src)/macros/lib.rs rusttest-prepare FORCE 261 +$(call if_changed,rustc_test) 262 +$(call if_changed,rustdoc_test) 263 264rusttest-kernel: private rustc_target_flags = --extern alloc \ 265 --extern build_error --extern macros --extern bindings --extern uapi 266rusttest-kernel: $(src)/kernel/lib.rs rusttest-prepare \ 267 rusttestlib-build_error rusttestlib-macros rusttestlib-bindings \ 268 rusttestlib-uapi FORCE 269 +$(call if_changed,rustc_test) 270 +$(call if_changed,rustc_test_library) 271 272ifdef CONFIG_CC_IS_CLANG 273bindgen_c_flags = $(c_flags) 274else 275# bindgen relies on libclang to parse C. Ideally, bindgen would support a GCC 276# plugin backend and/or the Clang driver would be perfectly compatible with GCC. 277# 278# For the moment, here we are tweaking the flags on the fly. This is a hack, 279# and some kernel configurations may not work (e.g. `GCC_PLUGIN_RANDSTRUCT` 280# if we end up using one of those structs). 281bindgen_skip_c_flags := -mno-fp-ret-in-387 -mpreferred-stack-boundary=% \ 282 -mskip-rax-setup -mgeneral-regs-only -msign-return-address=% \ 283 -mindirect-branch=thunk-extern -mindirect-branch-register \ 284 -mfunction-return=thunk-extern -mrecord-mcount -mabi=lp64 \ 285 -mindirect-branch-cs-prefix -mstack-protector-guard% -mtraceback=no \ 286 -mno-pointers-to-nested-functions -mno-string \ 287 -mno-strict-align -mstrict-align \ 288 -fconserve-stack -falign-jumps=% -falign-loops=% \ 289 -femit-struct-debug-baseonly -fno-ipa-cp-clone -fno-ipa-sra \ 290 -fno-partial-inlining -fplugin-arg-arm_ssp_per_task_plugin-% \ 291 -fno-reorder-blocks -fno-allow-store-data-races -fasan-shadow-offset=% \ 292 -fzero-call-used-regs=% -fno-stack-clash-protection \ 293 -fno-inline-functions-called-once -fsanitize=bounds-strict \ 294 -fstrict-flex-arrays=% \ 295 --param=% --param asan-% 296 297# Derived from `scripts/Makefile.clang`. 298BINDGEN_TARGET_x86 := x86_64-linux-gnu 299BINDGEN_TARGET_arm64 := aarch64-linux-gnu 300BINDGEN_TARGET := $(BINDGEN_TARGET_$(SRCARCH)) 301 302# All warnings are inhibited since GCC builds are very experimental, 303# many GCC warnings are not supported by Clang, they may only appear in 304# some configurations, with new GCC versions, etc. 305bindgen_extra_c_flags = -w --target=$(BINDGEN_TARGET) 306 307# Auto variable zero-initialization requires an additional special option with 308# clang that is going to be removed sometime in the future (likely in 309# clang-18), so make sure to pass this option only if clang supports it 310# (libclang major version < 16). 311# 312# https://github.com/llvm/llvm-project/issues/44842 313# https://github.com/llvm/llvm-project/blob/llvmorg-16.0.0-rc2/clang/docs/ReleaseNotes.rst#deprecated-compiler-flags 314ifdef CONFIG_INIT_STACK_ALL_ZERO 315libclang_maj_ver=$(shell $(BINDGEN) $(srctree)/scripts/rust_is_available_bindgen_libclang.h 2>&1 | sed -ne 's/.*clang version \([0-9]*\).*/\1/p') 316ifeq ($(shell expr $(libclang_maj_ver) \< 16), 1) 317bindgen_extra_c_flags += -enable-trivial-auto-var-init-zero-knowing-it-will-be-removed-from-clang 318endif 319endif 320 321bindgen_c_flags = $(filter-out $(bindgen_skip_c_flags), $(c_flags)) \ 322 $(bindgen_extra_c_flags) 323endif 324 325ifdef CONFIG_LTO 326bindgen_c_flags_lto = $(filter-out $(CC_FLAGS_LTO), $(bindgen_c_flags)) 327else 328bindgen_c_flags_lto = $(bindgen_c_flags) 329endif 330 331bindgen_c_flags_final = $(bindgen_c_flags_lto) -D__BINDGEN__ 332 333quiet_cmd_bindgen = BINDGEN $@ 334 cmd_bindgen = \ 335 $(BINDGEN) $< $(bindgen_target_flags) \ 336 --use-core --with-derive-default --ctypes-prefix core::ffi --no-layout-tests \ 337 --no-debug '.*' \ 338 -o $@ -- $(bindgen_c_flags_final) -DMODULE \ 339 $(bindgen_target_cflags) $(bindgen_target_extra) 340 341$(obj)/bindings/bindings_generated.rs: private bindgen_target_flags = \ 342 $(shell grep -Ev '^#|^$$' $(srctree)/$(src)/bindgen_parameters) 343$(obj)/bindings/bindings_generated.rs: private bindgen_target_extra = ; \ 344 sed -Ei 's/pub const RUST_CONST_HELPER_([a-zA-Z0-9_]*)/pub const \1/g' $@ 345$(obj)/bindings/bindings_generated.rs: $(src)/bindings/bindings_helper.h \ 346 $(src)/bindgen_parameters FORCE 347 $(call if_changed_dep,bindgen) 348 349$(obj)/uapi/uapi_generated.rs: private bindgen_target_flags = \ 350 $(shell grep -Ev '^#|^$$' $(srctree)/$(src)/bindgen_parameters) 351$(obj)/uapi/uapi_generated.rs: $(src)/uapi/uapi_helper.h \ 352 $(src)/bindgen_parameters FORCE 353 $(call if_changed_dep,bindgen) 354 355# See `CFLAGS_REMOVE_helpers.o` above. In addition, Clang on C does not warn 356# with `-Wmissing-declarations` (unlike GCC), so it is not strictly needed here 357# given it is `libclang`; but for consistency, future Clang changes and/or 358# a potential future GCC backend for `bindgen`, we disable it too. 359$(obj)/bindings/bindings_helpers_generated.rs: private bindgen_target_flags = \ 360 --blocklist-type '.*' --allowlist-var '' \ 361 --allowlist-function 'rust_helper_.*' 362$(obj)/bindings/bindings_helpers_generated.rs: private bindgen_target_cflags = \ 363 -I$(objtree)/$(obj) -Wno-missing-prototypes -Wno-missing-declarations 364$(obj)/bindings/bindings_helpers_generated.rs: private bindgen_target_extra = ; \ 365 sed -Ei 's/pub fn rust_helper_([a-zA-Z0-9_]*)/#[link_name="rust_helper_\1"]\n pub fn \1/g' $@ 366$(obj)/bindings/bindings_helpers_generated.rs: $(src)/helpers.c FORCE 367 $(call if_changed_dep,bindgen) 368 369quiet_cmd_exports = EXPORTS $@ 370 cmd_exports = \ 371 $(NM) -p --defined-only $< \ 372 | awk '/ (T|R|D) / {printf "EXPORT_SYMBOL_RUST_GPL(%s);\n",$$3}' > $@ 373 374$(obj)/exports_core_generated.h: $(obj)/core.o FORCE 375 $(call if_changed,exports) 376 377$(obj)/exports_alloc_generated.h: $(obj)/alloc.o FORCE 378 $(call if_changed,exports) 379 380$(obj)/exports_bindings_generated.h: $(obj)/bindings.o FORCE 381 $(call if_changed,exports) 382 383$(obj)/exports_kernel_generated.h: $(obj)/kernel.o FORCE 384 $(call if_changed,exports) 385 386quiet_cmd_rustc_procmacro = $(RUSTC_OR_CLIPPY_QUIET) P $@ 387 cmd_rustc_procmacro = \ 388 $(RUSTC_OR_CLIPPY) $(rust_common_flags) \ 389 -Clinker-flavor=gcc -Clinker=$(HOSTCC) \ 390 -Clink-args='$(call escsq,$(KBUILD_HOSTLDFLAGS))' \ 391 --emit=dep-info=$(depfile) --emit=link=$@ --extern proc_macro \ 392 --crate-type proc-macro \ 393 --crate-name $(patsubst lib%.so,%,$(notdir $@)) $< 394 395# Procedural macros can only be used with the `rustc` that compiled it. 396# Therefore, to get `libmacros.so` automatically recompiled when the compiler 397# version changes, we add `core.o` as a dependency (even if it is not needed). 398$(obj)/libmacros.so: $(src)/macros/lib.rs $(obj)/core.o FORCE 399 +$(call if_changed_dep,rustc_procmacro) 400 401quiet_cmd_rustc_library = $(if $(skip_clippy),RUSTC,$(RUSTC_OR_CLIPPY_QUIET)) L $@ 402 cmd_rustc_library = \ 403 OBJTREE=$(abspath $(objtree)) \ 404 $(if $(skip_clippy),$(RUSTC),$(RUSTC_OR_CLIPPY)) \ 405 $(filter-out $(skip_flags),$(rust_flags) $(rustc_target_flags)) \ 406 --emit=dep-info=$(depfile) --emit=obj=$@ \ 407 --emit=metadata=$(dir $@)$(patsubst %.o,lib%.rmeta,$(notdir $@)) \ 408 --crate-type rlib -L$(objtree)/$(obj) \ 409 --crate-name $(patsubst %.o,%,$(notdir $@)) $< \ 410 --sysroot=/dev/null \ 411 $(if $(rustc_objcopy),;$(OBJCOPY) $(rustc_objcopy) $@) 412 413rust-analyzer: 414 $(Q)$(srctree)/scripts/generate_rust_analyzer.py \ 415 --cfgs='core=$(core-cfgs)' --cfgs='alloc=$(alloc-cfgs)' \ 416 $(realpath $(srctree)) $(realpath $(objtree)) \ 417 $(RUST_LIB_SRC) $(KBUILD_EXTMOD) > \ 418 $(if $(KBUILD_EXTMOD),$(extmod_prefix),$(objtree))/rust-project.json 419 420redirect-intrinsics = \ 421 __addsf3 __eqsf2 __gesf2 __lesf2 __ltsf2 __mulsf3 __nesf2 __unordsf2 \ 422 __adddf3 __ledf2 __ltdf2 __muldf3 __unorddf2 \ 423 __muloti4 __multi3 \ 424 __udivmodti4 __udivti3 __umodti3 425 426ifneq ($(or $(CONFIG_ARM64),$(and $(CONFIG_RISCV),$(CONFIG_64BIT))),) 427 # These intrinsics are defined for ARM64 and RISCV64 428 redirect-intrinsics += \ 429 __ashrti3 \ 430 __ashlti3 __lshrti3 431endif 432 433$(obj)/core.o: private skip_clippy = 1 434$(obj)/core.o: private skip_flags = -Dunreachable_pub 435$(obj)/core.o: private rustc_objcopy = $(foreach sym,$(redirect-intrinsics),--redefine-sym $(sym)=__rust$(sym)) 436$(obj)/core.o: private rustc_target_flags = $(core-cfgs) 437$(obj)/core.o: $(RUST_LIB_SRC)/core/src/lib.rs FORCE 438 +$(call if_changed_dep,rustc_library) 439ifneq ($(or $(CONFIG_X86_64),$(CONFIG_LOONGARCH)),) 440$(obj)/core.o: scripts/target.json 441endif 442 443$(obj)/compiler_builtins.o: private rustc_objcopy = -w -W '__*' 444$(obj)/compiler_builtins.o: $(src)/compiler_builtins.rs $(obj)/core.o FORCE 445 +$(call if_changed_dep,rustc_library) 446 447$(obj)/alloc.o: private skip_clippy = 1 448$(obj)/alloc.o: private skip_flags = -Dunreachable_pub 449$(obj)/alloc.o: private rustc_target_flags = $(alloc-cfgs) 450$(obj)/alloc.o: $(src)/alloc/lib.rs $(obj)/compiler_builtins.o FORCE 451 +$(call if_changed_dep,rustc_library) 452 453$(obj)/build_error.o: $(src)/build_error.rs $(obj)/compiler_builtins.o FORCE 454 +$(call if_changed_dep,rustc_library) 455 456$(obj)/bindings.o: $(src)/bindings/lib.rs \ 457 $(obj)/compiler_builtins.o \ 458 $(obj)/bindings/bindings_generated.rs \ 459 $(obj)/bindings/bindings_helpers_generated.rs FORCE 460 +$(call if_changed_dep,rustc_library) 461 462$(obj)/uapi.o: $(src)/uapi/lib.rs \ 463 $(obj)/compiler_builtins.o \ 464 $(obj)/uapi/uapi_generated.rs FORCE 465 +$(call if_changed_dep,rustc_library) 466 467$(obj)/kernel.o: private rustc_target_flags = --extern alloc \ 468 --extern build_error --extern macros --extern bindings --extern uapi 469$(obj)/kernel.o: $(src)/kernel/lib.rs $(obj)/alloc.o $(obj)/build_error.o \ 470 $(obj)/libmacros.so $(obj)/bindings.o $(obj)/uapi.o FORCE 471 +$(call if_changed_dep,rustc_library) 472 473endif # CONFIG_RUST 474
