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