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# SPDX-License-Identifier: GPL-2.0 # Where to place rustdoc generated documentation rustdoc_output := $(objtree)/Documentation/output/rust/rustdoc obj-$(CONFIG_RUST) += core.o compiler_builtins.o ffi.o always-$(CONFIG_RUST) += exports_core_generated.h # Missing prototypes are expected in the helpers since these are exported # for Rust only, thus there is no header nor prototypes. obj-$(CONFIG_RUST) += helpers/helpers.o CFLAGS_REMOVE_helpers/helpers.o = -Wmissing-prototypes -Wmissing-declarations always-$(CONFIG_RUST) += bindings/bindings_generated.rs bindings/bindings_helpers_generated.rs obj-$(CONFIG_RUST) += bindings.o kernel.o always-$(CONFIG_RUST) += exports_helpers_generated.h \ exports_bindings_generated.h exports_kernel_generated.h always-$(CONFIG_RUST) += uapi/uapi_generated.rs obj-$(CONFIG_RUST) += uapi.o ifdef CONFIG_RUST_BUILD_ASSERT_ALLOW obj-$(CONFIG_RUST) += build_error.o else always-$(CONFIG_RUST) += build_error.o endif obj-$(CONFIG_RUST) += exports.o always-$(CONFIG_RUST_KERNEL_DOCTESTS) += doctests_kernel_generated.rs always-$(CONFIG_RUST_KERNEL_DOCTESTS) += doctests_kernel_generated_kunit.c obj-$(CONFIG_RUST_KERNEL_DOCTESTS) += doctests_kernel_generated.o obj-$(CONFIG_RUST_KERNEL_DOCTESTS) += doctests_kernel_generated_kunit.o always-$(subst y,$(CONFIG_RUST),$(CONFIG_JUMP_LABEL)) += kernel/generated_arch_static_branch_asm.rs # Avoids running `$(RUSTC)` when it may not be available. ifdef CONFIG_RUST libmacros_name := $(shell MAKEFLAGS= $(RUSTC) --print file-names --crate-name macros --crate-type proc-macro - </dev/null) libmacros_extension := $(patsubst libmacros.%,%,$(libmacros_name)) always-$(CONFIG_RUST) += $(libmacros_name) # `$(rust_flags)` is passed in case the user added `--sysroot`. rustc_sysroot := $(shell MAKEFLAGS= $(RUSTC) $(rust_flags) --version | awk '{print "/usr/src/" $$1 "-" $$2}') rustc_host_target := $(shell $(RUSTC) --version --verbose | grep -F 'host: ' | cut -d' ' -f2) RUST_LIB_SRC ?= $(rustc_sysroot)/library ifneq ($(quiet),) rust_test_quiet=-q rustdoc_test_quiet=--test-args -q rustdoc_test_kernel_quiet=>/dev/null endif core-cfgs = \ --cfg no_fp_fmt_parse core-edition := $(if $(call rustc-min-version,108700),2024,2021) # `rustc` recognizes `--remap-path-prefix` since 1.26.0, but `rustdoc` only # since Rust 1.81.0. Moreover, `rustdoc` ICEs on out-of-tree builds since Rust # 1.82.0 (https://github.com/rust-lang/rust/issues/138520). Thus workaround both # issues skipping the flag. The former also applies to `RUSTDOC TK`. quiet_cmd_rustdoc = RUSTDOC $(if $(rustdoc_host),H, ) $< cmd_rustdoc = \ OBJTREE=$(abspath $(objtree)) \ $(RUSTDOC) $(filter-out $(skip_flags) --remap-path-prefix=%,$(if $(rustdoc_host),$(rust_common_flags),$(rust_flags))) \ $(rustc_target_flags) -L$(objtree)/$(obj) \ -Zunstable-options --generate-link-to-definition \ --output $(rustdoc_output) \ --crate-name $(subst rustdoc-,,$@) \ $(if $(rustdoc_host),,--sysroot=/dev/null) \ @$(objtree)/include/generated/rustc_cfg $< # The `html_logo_url` and `html_favicon_url` forms of the `doc` attribute # can be used to specify a custom logo. However: # - The given value is used as-is, thus it cannot be relative or a local file # (unlike the non-custom case) since the generated docs have subfolders. # - It requires adding it to every crate. # - It requires changing `core` which comes from the sysroot. # # Using `-Zcrate-attr` would solve the last two points, but not the first. # The https://github.com/rust-lang/rfcs/pull/3226 RFC suggests two new # command-like flags to solve the issue. Meanwhile, we use the non-custom case # and then retouch the generated files. rustdoc: rustdoc-core rustdoc-macros rustdoc-compiler_builtins \ rustdoc-kernel $(Q)cp $(srctree)/Documentation/images/logo.svg $(rustdoc_output)/static.files/ $(Q)cp $(srctree)/Documentation/images/COPYING-logo $(rustdoc_output)/static.files/ $(Q)find $(rustdoc_output) -name '*.html' -type f -print0 | xargs -0 sed -Ei \ -e 's:rust-logo-[0-9a-f]+\.svg:logo.svg:g' \ -e 's:favicon-[0-9a-f]+\.svg:logo.svg:g' \ -e 's:<link rel="alternate icon" type="image/png" href="[/.]+/static\.files/favicon-(16x16|32x32)-[0-9a-f]+\.png">::g' \ -e 's:<a href="srctree/([^"]+)">:<a href="$(realpath $(srctree))/\1">:g' $(Q)for f in $(rustdoc_output)/static.files/rustdoc-*.css; do \ echo ".logo-container > img { object-fit: contain; }" >> $$f; done rustdoc-macros: private rustdoc_host = yes rustdoc-macros: private rustc_target_flags = --crate-type proc-macro \ --extern proc_macro rustdoc-macros: $(src)/macros/lib.rs FORCE +$(call if_changed,rustdoc) # Starting with Rust 1.82.0, skipping `-Wrustdoc::unescaped_backticks` should # not be needed -- see https://github.com/rust-lang/rust/pull/128307. rustdoc-core: private skip_flags = --edition=2021 -Wrustdoc::unescaped_backticks rustdoc-core: private rustc_target_flags = --edition=$(core-edition) $(core-cfgs) rustdoc-core: $(RUST_LIB_SRC)/core/src/lib.rs FORCE +$(call if_changed,rustdoc) rustdoc-compiler_builtins: $(src)/compiler_builtins.rs rustdoc-core FORCE +$(call if_changed,rustdoc) rustdoc-ffi: $(src)/ffi.rs rustdoc-core FORCE +$(call if_changed,rustdoc) rustdoc-kernel: private rustc_target_flags = --extern ffi \ --extern build_error --extern macros \ --extern bindings --extern uapi rustdoc-kernel: $(src)/kernel/lib.rs rustdoc-core rustdoc-ffi rustdoc-macros \ rustdoc-compiler_builtins $(obj)/$(libmacros_name) \ $(obj)/bindings.o FORCE +$(call if_changed,rustdoc) quiet_cmd_rustc_test_library = $(RUSTC_OR_CLIPPY_QUIET) TL $< cmd_rustc_test_library = \ OBJTREE=$(abspath $(objtree)) \ $(RUSTC_OR_CLIPPY) $(rust_common_flags) \ @$(objtree)/include/generated/rustc_cfg $(rustc_target_flags) \ --crate-type $(if $(rustc_test_library_proc),proc-macro,rlib) \ --out-dir $(objtree)/$(obj)/test --cfg testlib \ -L$(objtree)/$(obj)/test \ --crate-name $(subst rusttest-,,$(subst rusttestlib-,,$@)) $< rusttestlib-build_error: $(src)/build_error.rs FORCE +$(call if_changed,rustc_test_library) rusttestlib-ffi: $(src)/ffi.rs FORCE +$(call if_changed,rustc_test_library) rusttestlib-macros: private rustc_target_flags = --extern proc_macro rusttestlib-macros: private rustc_test_library_proc = yes rusttestlib-macros: $(src)/macros/lib.rs FORCE +$(call if_changed,rustc_test_library) rusttestlib-kernel: private rustc_target_flags = --extern ffi \ --extern build_error --extern macros \ --extern bindings --extern uapi rusttestlib-kernel: $(src)/kernel/lib.rs \ rusttestlib-bindings rusttestlib-uapi rusttestlib-build_error \ $(obj)/$(libmacros_name) $(obj)/bindings.o FORCE +$(call if_changed,rustc_test_library) rusttestlib-bindings: private rustc_target_flags = --extern ffi rusttestlib-bindings: $(src)/bindings/lib.rs rusttestlib-ffi FORCE +$(call if_changed,rustc_test_library) rusttestlib-uapi: private rustc_target_flags = --extern ffi rusttestlib-uapi: $(src)/uapi/lib.rs rusttestlib-ffi FORCE +$(call if_changed,rustc_test_library) quiet_cmd_rustdoc_test = RUSTDOC T $< cmd_rustdoc_test = \ RUST_MODFILE=test.rs \ OBJTREE=$(abspath $(objtree)) \ $(RUSTDOC) --test $(rust_common_flags) \ @$(objtree)/include/generated/rustc_cfg \ $(rustc_target_flags) $(rustdoc_test_target_flags) \ $(rustdoc_test_quiet) \ -L$(objtree)/$(obj)/test --output $(rustdoc_output) \ --crate-name $(subst rusttest-,,$@) $< quiet_cmd_rustdoc_test_kernel = RUSTDOC TK $< cmd_rustdoc_test_kernel = \ rm -rf $(objtree)/$(obj)/test/doctests/kernel; \ mkdir -p $(objtree)/$(obj)/test/doctests/kernel; \ OBJTREE=$(abspath $(objtree)) \ $(RUSTDOC) --test $(filter-out --remap-path-prefix=%,$(rust_flags)) \ -L$(objtree)/$(obj) --extern ffi --extern kernel \ --extern build_error --extern macros \ --extern bindings --extern uapi \ --no-run --crate-name kernel -Zunstable-options \ --sysroot=/dev/null \ --test-builder $(objtree)/scripts/rustdoc_test_builder \ $< $(rustdoc_test_kernel_quiet); \ $(objtree)/scripts/rustdoc_test_gen %/doctests_kernel_generated.rs %/doctests_kernel_generated_kunit.c: \ $(src)/kernel/lib.rs $(obj)/kernel.o \ $(objtree)/scripts/rustdoc_test_builder \ $(objtree)/scripts/rustdoc_test_gen FORCE +$(call if_changed,rustdoc_test_kernel) # We cannot use `-Zpanic-abort-tests` because some tests are dynamic, # so for the moment we skip `-Cpanic=abort`. quiet_cmd_rustc_test = $(RUSTC_OR_CLIPPY_QUIET) T $< cmd_rustc_test = \ OBJTREE=$(abspath $(objtree)) \ $(RUSTC_OR_CLIPPY) --test $(rust_common_flags) \ @$(objtree)/include/generated/rustc_cfg \ $(rustc_target_flags) --out-dir $(objtree)/$(obj)/test \ -L$(objtree)/$(obj)/test \ --crate-name $(subst rusttest-,,$@) $<; \ $(objtree)/$(obj)/test/$(subst rusttest-,,$@) $(rust_test_quiet) \ $(rustc_test_run_flags) rusttest: rusttest-macros rusttest-kernel rusttest-macros: private rustc_target_flags = --extern proc_macro \ --extern macros --extern kernel rusttest-macros: private rustdoc_test_target_flags = --crate-type proc-macro rusttest-macros: $(src)/macros/lib.rs \ rusttestlib-macros rusttestlib-kernel FORCE +$(call if_changed,rustc_test) +$(call if_changed,rustdoc_test) rusttest-kernel: private rustc_target_flags = --extern ffi \ --extern build_error --extern macros --extern bindings --extern uapi rusttest-kernel: $(src)/kernel/lib.rs rusttestlib-ffi rusttestlib-kernel \ rusttestlib-build_error rusttestlib-macros rusttestlib-bindings \ rusttestlib-uapi FORCE +$(call if_changed,rustc_test) ifdef CONFIG_CC_IS_CLANG bindgen_c_flags = $(c_flags) else # bindgen relies on libclang to parse C. Ideally, bindgen would support a GCC # plugin backend and/or the Clang driver would be perfectly compatible with GCC. # # For the moment, here we are tweaking the flags on the fly. This is a hack, # and some kernel configurations may not work (e.g. `GCC_PLUGIN_RANDSTRUCT` # if we end up using one of those structs). bindgen_skip_c_flags := -mno-fp-ret-in-387 -mpreferred-stack-boundary=% \ -mskip-rax-setup -mgeneral-regs-only -msign-return-address=% \ -mindirect-branch=thunk-extern -mindirect-branch-register \ -mfunction-return=thunk-extern -mrecord-mcount -mabi=lp64 \ -mindirect-branch-cs-prefix -mstack-protector-guard% -mtraceback=no \ -mno-pointers-to-nested-functions -mno-string \ -mno-strict-align -mstrict-align -mdirect-extern-access \ -mexplicit-relocs -mno-check-zero-division \ -fconserve-stack -falign-jumps=% -falign-loops=% \ -femit-struct-debug-baseonly -fno-ipa-cp-clone -fno-ipa-sra \ -fno-partial-inlining -fplugin-arg-arm_ssp_per_task_plugin-% \ -fno-reorder-blocks -fno-allow-store-data-races -fasan-shadow-offset=% \ -fzero-call-used-regs=% -fno-stack-clash-protection \ -fno-inline-functions-called-once -fsanitize=bounds-strict \ -fstrict-flex-arrays=% -fmin-function-alignment=% \ -fzero-init-padding-bits=% -mno-fdpic \ --param=% --param asan-% # Derived from `scripts/Makefile.clang`. BINDGEN_TARGET_x86 := x86_64-linux-gnu BINDGEN_TARGET_arm64 := aarch64-linux-gnu BINDGEN_TARGET_loongarch := loongarch64-linux-gnusf BINDGEN_TARGET := $(BINDGEN_TARGET_$(SRCARCH)) # All warnings are inhibited since GCC builds are very experimental, # many GCC warnings are not supported by Clang, they may only appear in # some configurations, with new GCC versions, etc. bindgen_extra_c_flags = -w --target=$(BINDGEN_TARGET) # Auto variable zero-initialization requires an additional special option with # clang that is going to be removed sometime in the future (likely in # clang-18), so make sure to pass this option only if clang supports it # (libclang major version < 16). # # https://github.com/llvm/llvm-project/issues/44842 # https://github.com/llvm/llvm-project/blob/llvmorg-16.0.0-rc2/clang/docs/ReleaseNotes.rst#deprecated-compiler-flags ifdef CONFIG_INIT_STACK_ALL_ZERO libclang_maj_ver=$(shell $(BINDGEN) $(srctree)/scripts/rust_is_available_bindgen_libclang.h 2>&1 | sed -ne 's/.*clang version $[0-9]*$.*/\1/p') ifeq ($(shell expr $(libclang_maj_ver) \< 16), 1) bindgen_extra_c_flags += -enable-trivial-auto-var-init-zero-knowing-it-will-be-removed-from-clang endif endif bindgen_c_flags = $(filter-out $(bindgen_skip_c_flags), $(c_flags)) \ $(bindgen_extra_c_flags) endif ifdef CONFIG_LTO bindgen_c_flags_lto = $(filter-out $(CC_FLAGS_LTO), $(bindgen_c_flags)) else bindgen_c_flags_lto = $(bindgen_c_flags) endif # `-fno-builtin` is passed to avoid `bindgen` from using `clang` builtin # prototypes for functions like `memcpy` -- if this flag is not passed, # `bindgen`-generated prototypes use `c_ulong` or `c_uint` depending on # architecture instead of generating `usize`. bindgen_c_flags_final = $(bindgen_c_flags_lto) -fno-builtin -D__BINDGEN__ # Each `bindgen` release may upgrade the list of Rust target versions. By # default, the highest stable release in their list is used. Thus we need to set # a `--rust-target` to avoid future `bindgen` releases emitting code that # `rustc` may not understand. On top of that, `bindgen` does not support passing # an unknown Rust target version. # # Therefore, the Rust target for `bindgen` can be only as high as the minimum # Rust version the kernel supports and only as high as the greatest stable Rust # target supported by the minimum `bindgen` version the kernel supports (that # is, if we do not test the actual `rustc`/`bindgen` versions running). # # Starting with `bindgen` 0.71.0, we will be able to set any future Rust version # instead, i.e. we will be able to set here our minimum supported Rust version. quiet_cmd_bindgen = BINDGEN $@ cmd_bindgen = \ $(BINDGEN) $< $(bindgen_target_flags) --rust-target 1.68 \ --use-core --with-derive-default --ctypes-prefix ffi --no-layout-tests \ --no-debug '.*' --enable-function-attribute-detection \ -o $@ -- $(bindgen_c_flags_final) -DMODULE \ $(bindgen_target_cflags) $(bindgen_target_extra) $(obj)/bindings/bindings_generated.rs: private bindgen_target_flags = \ $(shell grep -Ev '^#|^$$' $(src)/bindgen_parameters) $(obj)/bindings/bindings_generated.rs: private bindgen_target_extra = ; \ sed -Ei 's/pub const RUST_CONST_HELPER_([a-zA-Z0-9_]*)/pub const \1/g' $@ $(obj)/bindings/bindings_generated.rs: $(src)/bindings/bindings_helper.h \ $(src)/bindgen_parameters FORCE $(call if_changed_dep,bindgen) $(obj)/uapi/uapi_generated.rs: private bindgen_target_flags = \ $(shell grep -Ev '^#|^$$' $(src)/bindgen_parameters) $(obj)/uapi/uapi_generated.rs: $(src)/uapi/uapi_helper.h \ $(src)/bindgen_parameters FORCE $(call if_changed_dep,bindgen) # See `CFLAGS_REMOVE_helpers.o` above. In addition, Clang on C does not warn # with `-Wmissing-declarations` (unlike GCC), so it is not strictly needed here # given it is `libclang`; but for consistency, future Clang changes and/or # a potential future GCC backend for `bindgen`, we disable it too. $(obj)/bindings/bindings_helpers_generated.rs: private bindgen_target_flags = \ --blocklist-type '.*' --allowlist-var '' \ --allowlist-function 'rust_helper_.*' $(obj)/bindings/bindings_helpers_generated.rs: private bindgen_target_cflags = \ -I$(objtree)/$(obj) -Wno-missing-prototypes -Wno-missing-declarations $(obj)/bindings/bindings_helpers_generated.rs: private bindgen_target_extra = ; \ sed -Ei 's/pub fn rust_helper_([a-zA-Z0-9_]*)/#[link_name="rust_helper_\1"]\n pub fn \1/g' $@ $(obj)/bindings/bindings_helpers_generated.rs: $(src)/helpers/helpers.c FORCE $(call if_changed_dep,bindgen) rust_exports = $(NM) -p --defined-only $(1) | awk '$$2~/(T|R|D|B)/ && $$3!~/__(pfx|cfi|odr_asan)/ { printf $(2),$$3 }' quiet_cmd_exports = EXPORTS $@ cmd_exports = \ $(call rust_exports,$<,"EXPORT_SYMBOL_RUST_GPL(%s);\n") > $@ $(obj)/exports_core_generated.h: $(obj)/core.o FORCE $(call if_changed,exports) # Even though Rust kernel modules should never use the bindings directly, # symbols from the `bindings` crate and the C helpers need to be exported # because Rust generics and inlined functions may not get their code generated # in the crate where they are defined. Other helpers, called from non-inline # functions, may not be exported, in principle. However, in general, the Rust # compiler does not guarantee codegen will be performed for a non-inline # function either. Therefore, we export all symbols from helpers and bindings. # In the future, this may be revisited to reduce the number of exports after # the compiler is informed about the places codegen is required. $(obj)/exports_helpers_generated.h: $(obj)/helpers/helpers.o FORCE $(call if_changed,exports) $(obj)/exports_bindings_generated.h: $(obj)/bindings.o FORCE $(call if_changed,exports) $(obj)/exports_kernel_generated.h: $(obj)/kernel.o FORCE $(call if_changed,exports) quiet_cmd_rustc_procmacro = $(RUSTC_OR_CLIPPY_QUIET) P $@ cmd_rustc_procmacro = \ $(RUSTC_OR_CLIPPY) $(rust_common_flags) \ -Clinker-flavor=gcc -Clinker=$(HOSTCC) \ -Clink-args='$(call escsq,$(KBUILD_PROCMACROLDFLAGS))' \ --emit=dep-info=$(depfile) --emit=link=$@ --extern proc_macro \ --crate-type proc-macro \ --crate-name $(patsubst lib%.$(libmacros_extension),%,$(notdir $@)) $< # Procedural macros can only be used with the `rustc` that compiled it. $(obj)/$(libmacros_name): $(src)/macros/lib.rs FORCE +$(call if_changed_dep,rustc_procmacro) quiet_cmd_rustc_library = $(if $(skip_clippy),RUSTC,$(RUSTC_OR_CLIPPY_QUIET)) L $@ cmd_rustc_library = \ OBJTREE=$(abspath $(objtree)) \ $(if $(skip_clippy),$(RUSTC),$(RUSTC_OR_CLIPPY)) \ $(filter-out $(skip_flags),$(rust_flags)) $(rustc_target_flags) \ --emit=dep-info=$(depfile) --emit=obj=$@ \ --emit=metadata=$(dir $@)$(patsubst %.o,lib%.rmeta,$(notdir $@)) \ --crate-type rlib -L$(objtree)/$(obj) \ --crate-name $(patsubst %.o,%,$(notdir $@)) $< \ --sysroot=/dev/null \ $(if $(rustc_objcopy),;$(OBJCOPY) $(rustc_objcopy) $@) \ $(cmd_objtool) rust-analyzer: $(Q)MAKEFLAGS= $(srctree)/scripts/generate_rust_analyzer.py \ --cfgs='core=$(core-cfgs)' $(core-edition) \ $(realpath $(srctree)) $(realpath $(objtree)) \ $(rustc_sysroot) $(RUST_LIB_SRC) $(if $(KBUILD_EXTMOD),$(srcroot)) \ > rust-project.json redirect-intrinsics = \ __addsf3 __eqsf2 __extendsfdf2 __gesf2 __lesf2 __ltsf2 __mulsf3 __nesf2 __truncdfsf2 __unordsf2 \ __adddf3 __eqdf2 __ledf2 __ltdf2 __muldf3 __unorddf2 \ __muloti4 __multi3 \ __udivmodti4 __udivti3 __umodti3 ifneq ($(or $(CONFIG_ARM64),$(and $(CONFIG_RISCV),$(CONFIG_64BIT))),) # These intrinsics are defined for ARM64 and RISCV64 redirect-intrinsics += \ __ashrti3 \ __ashlti3 __lshrti3 endif ifdef CONFIG_MODVERSIONS cmd_gendwarfksyms = $(if $(skip_gendwarfksyms),, \ $(call rust_exports,$@,"%s\n") | \ scripts/gendwarfksyms/gendwarfksyms \ $(if $(KBUILD_GENDWARFKSYMS_STABLE), --stable) \ $(if $(KBUILD_SYMTYPES), --symtypes $(@:.o=.symtypes),) \ $@ >> $(dot-target).cmd) endif define rule_rustc_library $(call cmd_and_fixdep,rustc_library) $(call cmd,gen_objtooldep) $(call cmd,gendwarfksyms) endef define rule_rust_cc_library $(call if_changed_rule,cc_o_c) $(call cmd,force_checksrc) $(call cmd,gendwarfksyms) endef # helpers.o uses the same export mechanism as Rust libraries, so ensure symbol # versions are calculated for the helpers too. $(obj)/helpers/helpers.o: $(src)/helpers/helpers.c $(recordmcount_source) FORCE +$(call if_changed_rule,rust_cc_library) # Disable symbol versioning for exports.o to avoid conflicts with the actual # symbol versions generated from Rust objects. $(obj)/exports.o: private skip_gendwarfksyms = 1 $(obj)/core.o: private skip_clippy = 1 $(obj)/core.o: private skip_flags = --edition=2021 -Wunreachable_pub $(obj)/core.o: private rustc_objcopy = $(foreach sym,$(redirect-intrinsics),--redefine-sym $(sym)=__rust$(sym)) $(obj)/core.o: private rustc_target_flags = --edition=$(core-edition) $(core-cfgs) $(obj)/core.o: $(RUST_LIB_SRC)/core/src/lib.rs \ $(wildcard $(objtree)/include/config/RUSTC_VERSION_TEXT) FORCE +$(call if_changed_rule,rustc_library) ifneq ($(or $(CONFIG_X86_64),$(CONFIG_X86_32)),) $(obj)/core.o: scripts/target.json endif $(obj)/compiler_builtins.o: private skip_gendwarfksyms = 1 $(obj)/compiler_builtins.o: private rustc_objcopy = -w -W '__*' $(obj)/compiler_builtins.o: $(src)/compiler_builtins.rs $(obj)/core.o FORCE +$(call if_changed_rule,rustc_library) $(obj)/build_error.o: private skip_gendwarfksyms = 1 $(obj)/build_error.o: $(src)/build_error.rs $(obj)/compiler_builtins.o FORCE +$(call if_changed_rule,rustc_library) $(obj)/ffi.o: private skip_gendwarfksyms = 1 $(obj)/ffi.o: $(src)/ffi.rs $(obj)/compiler_builtins.o FORCE +$(call if_changed_rule,rustc_library) $(obj)/bindings.o: private rustc_target_flags = --extern ffi $(obj)/bindings.o: $(src)/bindings/lib.rs \ $(obj)/ffi.o \ $(obj)/bindings/bindings_generated.rs \ $(obj)/bindings/bindings_helpers_generated.rs FORCE +$(call if_changed_rule,rustc_library) $(obj)/uapi.o: private rustc_target_flags = --extern ffi $(obj)/uapi.o: private skip_gendwarfksyms = 1 $(obj)/uapi.o: $(src)/uapi/lib.rs \ $(obj)/ffi.o \ $(obj)/uapi/uapi_generated.rs FORCE +$(call if_changed_rule,rustc_library) $(obj)/kernel.o: private rustc_target_flags = --extern ffi \ --extern build_error --extern macros --extern bindings --extern uapi $(obj)/kernel.o: $(src)/kernel/lib.rs $(obj)/build_error.o \ $(obj)/$(libmacros_name) $(obj)/bindings.o $(obj)/uapi.o FORCE +$(call if_changed_rule,rustc_library) ifdef CONFIG_JUMP_LABEL $(obj)/kernel.o: $(obj)/kernel/generated_arch_static_branch_asm.rs endif endif # CONFIG_RUST