| 1 | # SPDX-License-Identifier: GPL-2.0 |
| 2 | |
| 3 | obj-$(CONFIG_RUST) += core.o compiler_builtins.o |
| 4 | always-$(CONFIG_RUST) += exports_core_generated.h |
| 5 | |
| 6 | # Missing prototypes are expected in the helpers since these are exported |
| 7 | # for Rust only, thus there is no header nor prototypes. |
| 8 | obj-$(CONFIG_RUST) += helpers.o |
| 9 | CFLAGS_REMOVE_helpers.o = -Wmissing-prototypes -Wmissing-declarations |
| 10 | |
| 11 | always-$(CONFIG_RUST) += libmacros.so |
| 12 | no-clean-files += libmacros.so |
| 13 | |
| 14 | always-$(CONFIG_RUST) += bindings/bindings_generated.rs bindings/bindings_helpers_generated.rs |
| 15 | obj-$(CONFIG_RUST) += alloc.o bindings.o kernel.o |
| 16 | always-$(CONFIG_RUST) += exports_alloc_generated.h exports_bindings_generated.h \ |
| 17 | exports_kernel_generated.h |
| 18 | |
| 19 | always-$(CONFIG_RUST) += uapi/uapi_generated.rs |
| 20 | obj-$(CONFIG_RUST) += uapi.o |
| 21 | |
| 22 | ifdef CONFIG_RUST_BUILD_ASSERT_ALLOW |
| 23 | obj-$(CONFIG_RUST) += build_error.o |
| 24 | else |
| 25 | always-$(CONFIG_RUST) += build_error.o |
| 26 | endif |
| 27 | |
| 28 | obj-$(CONFIG_RUST) += exports.o |
| 29 | |
| 30 | # Avoids running `$(RUSTC)` for the sysroot when it may not be available. |
| 31 | ifdef CONFIG_RUST |
| 32 | |
| 33 | # `$(rust_flags)` is passed in case the user added `--sysroot`. |
| 34 | rustc_sysroot := $(shell $(RUSTC) $(rust_flags) --print sysroot) |
| 35 | rustc_host_target := $(shell $(RUSTC) --version --verbose | grep -F 'host: ' | cut -d' ' -f2) |
| 36 | RUST_LIB_SRC ?= $(rustc_sysroot)/lib/rustlib/src/rust/library |
| 37 | |
| 38 | ifeq ($(quiet),silent_) |
| 39 | cargo_quiet=-q |
| 40 | rust_test_quiet=-q |
| 41 | rustdoc_test_quiet=--test-args -q |
| 42 | else ifeq ($(quiet),quiet_) |
| 43 | rust_test_quiet=-q |
| 44 | rustdoc_test_quiet=--test-args -q |
| 45 | else |
| 46 | cargo_quiet=--verbose |
| 47 | endif |
| 48 | |
| 49 | core-cfgs = \ |
| 50 | --cfg no_fp_fmt_parse |
| 51 | |
| 52 | alloc-cfgs = \ |
| 53 | --cfg no_borrow \ |
| 54 | --cfg no_fmt \ |
| 55 | --cfg no_global_oom_handling \ |
| 56 | --cfg no_macros \ |
| 57 | --cfg no_rc \ |
| 58 | --cfg no_str \ |
| 59 | --cfg no_string \ |
| 60 | --cfg no_sync \ |
| 61 | --cfg no_thin |
| 62 | |
| 63 | quiet_cmd_rustdoc = RUSTDOC $(if $(rustdoc_host),H, ) $< |
| 64 | cmd_rustdoc = \ |
| 65 | OBJTREE=$(abspath $(objtree)) \ |
| 66 | $(RUSTDOC) $(if $(rustdoc_host),$(rust_common_flags),$(rust_flags)) \ |
| 67 | $(rustc_target_flags) -L$(objtree)/$(obj) \ |
| 68 | --output $(objtree)/$(obj)/doc \ |
| 69 | --crate-name $(subst rustdoc-,,$@) \ |
| 70 | @$(objtree)/include/generated/rustc_cfg $< |
| 71 | |
| 72 | # The `html_logo_url` and `html_favicon_url` forms of the `doc` attribute |
| 73 | # can be used to specify a custom logo. However: |
| 74 | # - The given value is used as-is, thus it cannot be relative or a local file |
| 75 | # (unlike the non-custom case) since the generated docs have subfolders. |
| 76 | # - It requires adding it to every crate. |
| 77 | # - It requires changing `core` which comes from the sysroot. |
| 78 | # |
| 79 | # Using `-Zcrate-attr` would solve the last two points, but not the first. |
| 80 | # The https://github.com/rust-lang/rfcs/pull/3226 RFC suggests two new |
| 81 | # command-like flags to solve the issue. Meanwhile, we use the non-custom case |
| 82 | # and then retouch the generated files. |
| 83 | rustdoc: rustdoc-core rustdoc-macros rustdoc-compiler_builtins \ |
| 84 | rustdoc-alloc rustdoc-kernel |
| 85 | $(Q)cp $(srctree)/Documentation/images/logo.svg $(objtree)/$(obj)/doc |
| 86 | $(Q)cp $(srctree)/Documentation/images/COPYING-logo $(objtree)/$(obj)/doc |
| 87 | $(Q)find $(objtree)/$(obj)/doc -name '*.html' -type f -print0 | xargs -0 sed -Ei \ |
| 88 | -e 's:rust-logo\.svg:logo.svg:g' \ |
| 89 | -e 's:rust-logo\.png:logo.svg:g' \ |
| 90 | -e 's:favicon\.svg:logo.svg:g' \ |
| 91 | -e 's:<link rel="alternate icon" type="image/png" href="[./]*favicon-(16x16|32x32)\.png">::g' |
| 92 | $(Q)echo '.logo-container > img { object-fit: contain; }' \ |
| 93 | >> $(objtree)/$(obj)/doc/rustdoc.css |
| 94 | |
| 95 | rustdoc-macros: private rustdoc_host = yes |
| 96 | rustdoc-macros: private rustc_target_flags = --crate-type proc-macro \ |
| 97 | --extern proc_macro |
| 98 | rustdoc-macros: $(src)/macros/lib.rs FORCE |
| 99 | $(call if_changed,rustdoc) |
| 100 | |
| 101 | rustdoc-core: private rustc_target_flags = $(core-cfgs) |
| 102 | rustdoc-core: $(RUST_LIB_SRC)/core/src/lib.rs FORCE |
| 103 | $(call if_changed,rustdoc) |
| 104 | |
| 105 | rustdoc-compiler_builtins: $(src)/compiler_builtins.rs rustdoc-core FORCE |
| 106 | $(call if_changed,rustdoc) |
| 107 | |
| 108 | # We need to allow `rustdoc::broken_intra_doc_links` because some |
| 109 | # `no_global_oom_handling` functions refer to non-`no_global_oom_handling` |
| 110 | # functions. Ideally `rustdoc` would have a way to distinguish broken links |
| 111 | # due to things that are "configured out" vs. entirely non-existing ones. |
| 112 | rustdoc-alloc: private rustc_target_flags = $(alloc-cfgs) \ |
| 113 | -Arustdoc::broken_intra_doc_links |
| 114 | rustdoc-alloc: $(src)/alloc/lib.rs rustdoc-core rustdoc-compiler_builtins FORCE |
| 115 | $(call if_changed,rustdoc) |
| 116 | |
| 117 | rustdoc-kernel: private rustc_target_flags = --extern alloc \ |
| 118 | --extern build_error --extern macros=$(objtree)/$(obj)/libmacros.so \ |
| 119 | --extern bindings --extern uapi |
| 120 | rustdoc-kernel: $(src)/kernel/lib.rs rustdoc-core rustdoc-macros \ |
| 121 | rustdoc-compiler_builtins rustdoc-alloc $(obj)/libmacros.so \ |
| 122 | $(obj)/bindings.o FORCE |
| 123 | $(call if_changed,rustdoc) |
| 124 | |
| 125 | quiet_cmd_rustc_test_library = RUSTC TL $< |
| 126 | cmd_rustc_test_library = \ |
| 127 | OBJTREE=$(abspath $(objtree)) \ |
| 128 | $(RUSTC) $(rust_common_flags) \ |
| 129 | @$(objtree)/include/generated/rustc_cfg $(rustc_target_flags) \ |
| 130 | --crate-type $(if $(rustc_test_library_proc),proc-macro,rlib) \ |
| 131 | --out-dir $(objtree)/$(obj)/test --cfg testlib \ |
| 132 | --sysroot $(objtree)/$(obj)/test/sysroot \ |
| 133 | -L$(objtree)/$(obj)/test \ |
| 134 | --crate-name $(subst rusttest-,,$(subst rusttestlib-,,$@)) $< |
| 135 | |
| 136 | rusttestlib-build_error: $(src)/build_error.rs rusttest-prepare FORCE |
| 137 | $(call if_changed,rustc_test_library) |
| 138 | |
| 139 | rusttestlib-macros: private rustc_target_flags = --extern proc_macro |
| 140 | rusttestlib-macros: private rustc_test_library_proc = yes |
| 141 | rusttestlib-macros: $(src)/macros/lib.rs rusttest-prepare FORCE |
| 142 | $(call if_changed,rustc_test_library) |
| 143 | |
| 144 | rusttestlib-bindings: $(src)/bindings/lib.rs rusttest-prepare FORCE |
| 145 | $(call if_changed,rustc_test_library) |
| 146 | |
| 147 | rusttestlib-uapi: $(src)/uapi/lib.rs rusttest-prepare FORCE |
| 148 | $(call if_changed,rustc_test_library) |
| 149 | |
| 150 | quiet_cmd_rustdoc_test = RUSTDOC T $< |
| 151 | cmd_rustdoc_test = \ |
| 152 | OBJTREE=$(abspath $(objtree)) \ |
| 153 | $(RUSTDOC) --test $(rust_common_flags) \ |
| 154 | @$(objtree)/include/generated/rustc_cfg \ |
| 155 | $(rustc_target_flags) $(rustdoc_test_target_flags) \ |
| 156 | --sysroot $(objtree)/$(obj)/test/sysroot $(rustdoc_test_quiet) \ |
| 157 | -L$(objtree)/$(obj)/test --output $(objtree)/$(obj)/doc \ |
| 158 | --crate-name $(subst rusttest-,,$@) $< |
| 159 | |
| 160 | # We cannot use `-Zpanic-abort-tests` because some tests are dynamic, |
| 161 | # so for the moment we skip `-Cpanic=abort`. |
| 162 | quiet_cmd_rustc_test = RUSTC T $< |
| 163 | cmd_rustc_test = \ |
| 164 | OBJTREE=$(abspath $(objtree)) \ |
| 165 | $(RUSTC) --test $(rust_common_flags) \ |
| 166 | @$(objtree)/include/generated/rustc_cfg \ |
| 167 | $(rustc_target_flags) --out-dir $(objtree)/$(obj)/test \ |
| 168 | --sysroot $(objtree)/$(obj)/test/sysroot \ |
| 169 | -L$(objtree)/$(obj)/test \ |
| 170 | --crate-name $(subst rusttest-,,$@) $<; \ |
| 171 | $(objtree)/$(obj)/test/$(subst rusttest-,,$@) $(rust_test_quiet) \ |
| 172 | $(rustc_test_run_flags) |
| 173 | |
| 174 | rusttest: rusttest-macros rusttest-kernel |
| 175 | |
| 176 | # This prepares a custom sysroot with our custom `alloc` instead of |
| 177 | # the standard one. |
| 178 | # |
| 179 | # This requires several hacks: |
| 180 | # - Unlike `core` and `alloc`, `std` depends on more than a dozen crates, |
| 181 | # including third-party crates that need to be downloaded, plus custom |
| 182 | # `build.rs` steps. Thus hardcoding things here is not maintainable. |
| 183 | # - `cargo` knows how to build the standard library, but it is an unstable |
| 184 | # feature so far (`-Zbuild-std`). |
| 185 | # - `cargo` only considers the use case of building the standard library |
| 186 | # to use it in a given package. Thus we need to create a dummy package |
| 187 | # and pick the generated libraries from there. |
| 188 | # - Since we only keep a subset of upstream `alloc` in-tree, we need |
| 189 | # to recreate it on the fly by putting our sources on top. |
| 190 | # - The usual ways of modifying the dependency graph in `cargo` do not seem |
| 191 | # to apply for the `-Zbuild-std` steps, thus we have to mislead it |
| 192 | # by modifying the sources in the sysroot. |
| 193 | # - To avoid messing with the user's Rust installation, we create a clone |
| 194 | # of the sysroot. However, `cargo` ignores `RUSTFLAGS` in the `-Zbuild-std` |
| 195 | # steps, thus we use a wrapper binary passed via `RUSTC` to pass the flag. |
| 196 | # |
| 197 | # In the future, we hope to avoid the whole ordeal by either: |
| 198 | # - Making the `test` crate not depend on `std` (either improving upstream |
| 199 | # or having our own custom crate). |
| 200 | # - Making the tests run in kernel space (requires the previous point). |
| 201 | # - Making `std` and friends be more like a "normal" crate, so that |
| 202 | # `-Zbuild-std` and related hacks are not needed. |
| 203 | quiet_cmd_rustsysroot = RUSTSYSROOT |
| 204 | cmd_rustsysroot = \ |
| 205 | rm -rf $(objtree)/$(obj)/test; \ |
| 206 | mkdir -p $(objtree)/$(obj)/test; \ |
| 207 | cp -a $(rustc_sysroot) $(objtree)/$(obj)/test/sysroot; \ |
| 208 | cp -r $(srctree)/$(src)/alloc/* \ |
| 209 | $(objtree)/$(obj)/test/sysroot/lib/rustlib/src/rust/library/alloc/src; \ |
| 210 | echo '\#!/bin/sh' > $(objtree)/$(obj)/test/rustc_sysroot; \ |
| 211 | echo "$(RUSTC) --sysroot=$(abspath $(objtree)/$(obj)/test/sysroot) \"\$$@\"" \ |
| 212 | >> $(objtree)/$(obj)/test/rustc_sysroot; \ |
| 213 | chmod u+x $(objtree)/$(obj)/test/rustc_sysroot; \ |
| 214 | $(CARGO) -q new $(objtree)/$(obj)/test/dummy; \ |
| 215 | RUSTC=$(objtree)/$(obj)/test/rustc_sysroot $(CARGO) $(cargo_quiet) \ |
| 216 | test -Zbuild-std --target $(rustc_host_target) \ |
| 217 | --manifest-path $(objtree)/$(obj)/test/dummy/Cargo.toml; \ |
| 218 | rm $(objtree)/$(obj)/test/sysroot/lib/rustlib/$(rustc_host_target)/lib/*; \ |
| 219 | cp $(objtree)/$(obj)/test/dummy/target/$(rustc_host_target)/debug/deps/* \ |
| 220 | $(objtree)/$(obj)/test/sysroot/lib/rustlib/$(rustc_host_target)/lib |
| 221 | |
| 222 | rusttest-prepare: FORCE |
| 223 | $(call if_changed,rustsysroot) |
| 224 | |
| 225 | rusttest-macros: private rustc_target_flags = --extern proc_macro |
| 226 | rusttest-macros: private rustdoc_test_target_flags = --crate-type proc-macro |
| 227 | rusttest-macros: $(src)/macros/lib.rs rusttest-prepare FORCE |
| 228 | $(call if_changed,rustc_test) |
| 229 | $(call if_changed,rustdoc_test) |
| 230 | |
| 231 | rusttest-kernel: private rustc_target_flags = --extern alloc \ |
| 232 | --extern build_error --extern macros --extern bindings --extern uapi |
| 233 | rusttest-kernel: $(src)/kernel/lib.rs rusttest-prepare \ |
| 234 | rusttestlib-build_error rusttestlib-macros rusttestlib-bindings \ |
| 235 | rusttestlib-uapi FORCE |
| 236 | $(call if_changed,rustc_test) |
| 237 | $(call if_changed,rustc_test_library) |
| 238 | |
| 239 | ifdef CONFIG_CC_IS_CLANG |
| 240 | bindgen_c_flags = $(c_flags) |
| 241 | else |
| 242 | # bindgen relies on libclang to parse C. Ideally, bindgen would support a GCC |
| 243 | # plugin backend and/or the Clang driver would be perfectly compatible with GCC. |
| 244 | # |
| 245 | # For the moment, here we are tweaking the flags on the fly. This is a hack, |
| 246 | # and some kernel configurations may not work (e.g. `GCC_PLUGIN_RANDSTRUCT` |
| 247 | # if we end up using one of those structs). |
| 248 | bindgen_skip_c_flags := -mno-fp-ret-in-387 -mpreferred-stack-boundary=% \ |
| 249 | -mskip-rax-setup -mgeneral-regs-only -msign-return-address=% \ |
| 250 | -mindirect-branch=thunk-extern -mindirect-branch-register \ |
| 251 | -mfunction-return=thunk-extern -mrecord-mcount -mabi=lp64 \ |
| 252 | -mindirect-branch-cs-prefix -mstack-protector-guard% -mtraceback=no \ |
| 253 | -mno-pointers-to-nested-functions -mno-string \ |
| 254 | -mno-strict-align -mstrict-align \ |
| 255 | -fconserve-stack -falign-jumps=% -falign-loops=% \ |
| 256 | -femit-struct-debug-baseonly -fno-ipa-cp-clone -fno-ipa-sra \ |
| 257 | -fno-partial-inlining -fplugin-arg-arm_ssp_per_task_plugin-% \ |
| 258 | -fno-reorder-blocks -fno-allow-store-data-races -fasan-shadow-offset=% \ |
| 259 | -fzero-call-used-regs=% -fno-stack-clash-protection \ |
| 260 | -fno-inline-functions-called-once \ |
| 261 | --param=% --param asan-% |
| 262 | |
| 263 | # Derived from `scripts/Makefile.clang`. |
| 264 | BINDGEN_TARGET_x86 := x86_64-linux-gnu |
| 265 | BINDGEN_TARGET := $(BINDGEN_TARGET_$(SRCARCH)) |
| 266 | |
| 267 | # All warnings are inhibited since GCC builds are very experimental, |
| 268 | # many GCC warnings are not supported by Clang, they may only appear in |
| 269 | # some configurations, with new GCC versions, etc. |
| 270 | bindgen_extra_c_flags = -w --target=$(BINDGEN_TARGET) |
| 271 | |
| 272 | # Auto variable zero-initialization requires an additional special option with |
| 273 | # clang that is going to be removed sometime in the future (likely in |
| 274 | # clang-18), so make sure to pass this option only if clang supports it |
| 275 | # (libclang major version < 16). |
| 276 | # |
| 277 | # https://github.com/llvm/llvm-project/issues/44842 |
| 278 | # https://github.com/llvm/llvm-project/blob/llvmorg-16.0.0-rc2/clang/docs/ReleaseNotes.rst#deprecated-compiler-flags |
| 279 | ifdef CONFIG_INIT_STACK_ALL_ZERO |
| 280 | libclang_maj_ver=$(shell $(BINDGEN) $(srctree)/scripts/rust_is_available_bindgen_libclang.h 2>&1 | sed -ne 's/.*clang version \([0-9]*\).*/\1/p') |
| 281 | ifeq ($(shell expr $(libclang_maj_ver) \< 16), 1) |
| 282 | bindgen_extra_c_flags += -enable-trivial-auto-var-init-zero-knowing-it-will-be-removed-from-clang |
| 283 | endif |
| 284 | endif |
| 285 | |
| 286 | bindgen_c_flags = $(filter-out $(bindgen_skip_c_flags), $(c_flags)) \ |
| 287 | $(bindgen_extra_c_flags) |
| 288 | endif |
| 289 | |
| 290 | ifdef CONFIG_LTO |
| 291 | bindgen_c_flags_lto = $(filter-out $(CC_FLAGS_LTO), $(bindgen_c_flags)) |
| 292 | else |
| 293 | bindgen_c_flags_lto = $(bindgen_c_flags) |
| 294 | endif |
| 295 | |
| 296 | bindgen_c_flags_final = $(bindgen_c_flags_lto) -D__BINDGEN__ |
| 297 | |
| 298 | quiet_cmd_bindgen = BINDGEN $@ |
| 299 | cmd_bindgen = \ |
| 300 | $(BINDGEN) $< $(bindgen_target_flags) \ |
| 301 | --use-core --with-derive-default --ctypes-prefix core::ffi --no-layout-tests \ |
| 302 | --no-debug '.*' \ |
| 303 | --size_t-is-usize -o $@ -- $(bindgen_c_flags_final) -DMODULE \ |
| 304 | $(bindgen_target_cflags) $(bindgen_target_extra) |
| 305 | |
| 306 | $(obj)/bindings/bindings_generated.rs: private bindgen_target_flags = \ |
| 307 | $(shell grep -v '^#\|^$$' $(srctree)/$(src)/bindgen_parameters) |
| 308 | $(obj)/bindings/bindings_generated.rs: $(src)/bindings/bindings_helper.h \ |
| 309 | $(src)/bindgen_parameters FORCE |
| 310 | $(call if_changed_dep,bindgen) |
| 311 | |
| 312 | $(obj)/uapi/uapi_generated.rs: private bindgen_target_flags = \ |
| 313 | $(shell grep -v '^#\|^$$' $(srctree)/$(src)/bindgen_parameters) |
| 314 | $(obj)/uapi/uapi_generated.rs: $(src)/uapi/uapi_helper.h \ |
| 315 | $(src)/bindgen_parameters FORCE |
| 316 | $(call if_changed_dep,bindgen) |
| 317 | |
| 318 | # See `CFLAGS_REMOVE_helpers.o` above. In addition, Clang on C does not warn |
| 319 | # with `-Wmissing-declarations` (unlike GCC), so it is not strictly needed here |
| 320 | # given it is `libclang`; but for consistency, future Clang changes and/or |
| 321 | # a potential future GCC backend for `bindgen`, we disable it too. |
| 322 | $(obj)/bindings/bindings_helpers_generated.rs: private bindgen_target_flags = \ |
| 323 | --blacklist-type '.*' --whitelist-var '' \ |
| 324 | --whitelist-function 'rust_helper_.*' |
| 325 | $(obj)/bindings/bindings_helpers_generated.rs: private bindgen_target_cflags = \ |
| 326 | -I$(objtree)/$(obj) -Wno-missing-prototypes -Wno-missing-declarations |
| 327 | $(obj)/bindings/bindings_helpers_generated.rs: private bindgen_target_extra = ; \ |
| 328 | sed -Ei 's/pub fn rust_helper_([a-zA-Z0-9_]*)/#[link_name="rust_helper_\1"]\n pub fn \1/g' $@ |
| 329 | $(obj)/bindings/bindings_helpers_generated.rs: $(src)/helpers.c FORCE |
| 330 | $(call if_changed_dep,bindgen) |
| 331 | |
| 332 | quiet_cmd_exports = EXPORTS $@ |
| 333 | cmd_exports = \ |
| 334 | $(NM) -p --defined-only $< \ |
| 335 | | grep -E ' (T|R|D) ' | cut -d ' ' -f 3 \ |
| 336 | | xargs -Isymbol \ |
| 337 | echo 'EXPORT_SYMBOL_RUST_GPL(symbol);' > $@ |
| 338 | |
| 339 | $(obj)/exports_core_generated.h: $(obj)/core.o FORCE |
| 340 | $(call if_changed,exports) |
| 341 | |
| 342 | $(obj)/exports_alloc_generated.h: $(obj)/alloc.o FORCE |
| 343 | $(call if_changed,exports) |
| 344 | |
| 345 | $(obj)/exports_bindings_generated.h: $(obj)/bindings.o FORCE |
| 346 | $(call if_changed,exports) |
| 347 | |
| 348 | $(obj)/exports_kernel_generated.h: $(obj)/kernel.o FORCE |
| 349 | $(call if_changed,exports) |
| 350 | |
| 351 | quiet_cmd_rustc_procmacro = $(RUSTC_OR_CLIPPY_QUIET) P $@ |
| 352 | cmd_rustc_procmacro = \ |
| 353 | $(RUSTC_OR_CLIPPY) $(rust_common_flags) \ |
| 354 | --emit=dep-info=$(depfile) --emit=link=$@ --extern proc_macro \ |
| 355 | --crate-type proc-macro \ |
| 356 | --crate-name $(patsubst lib%.so,%,$(notdir $@)) $< |
| 357 | |
| 358 | # Procedural macros can only be used with the `rustc` that compiled it. |
| 359 | # Therefore, to get `libmacros.so` automatically recompiled when the compiler |
| 360 | # version changes, we add `core.o` as a dependency (even if it is not needed). |
| 361 | $(obj)/libmacros.so: $(src)/macros/lib.rs $(obj)/core.o FORCE |
| 362 | $(call if_changed_dep,rustc_procmacro) |
| 363 | |
| 364 | quiet_cmd_rustc_library = $(if $(skip_clippy),RUSTC,$(RUSTC_OR_CLIPPY_QUIET)) L $@ |
| 365 | cmd_rustc_library = \ |
| 366 | OBJTREE=$(abspath $(objtree)) \ |
| 367 | $(if $(skip_clippy),$(RUSTC),$(RUSTC_OR_CLIPPY)) \ |
| 368 | $(filter-out $(skip_flags),$(rust_flags) $(rustc_target_flags)) \ |
| 369 | --emit=dep-info=$(depfile) --emit=obj=$@ \ |
| 370 | --emit=metadata=$(dir $@)$(patsubst %.o,lib%.rmeta,$(notdir $@)) \ |
| 371 | --crate-type rlib -L$(objtree)/$(obj) \ |
| 372 | --crate-name $(patsubst %.o,%,$(notdir $@)) $< \ |
| 373 | $(if $(rustc_objcopy),;$(OBJCOPY) $(rustc_objcopy) $@) |
| 374 | |
| 375 | rust-analyzer: |
| 376 | $(Q)$(srctree)/scripts/generate_rust_analyzer.py $(srctree) $(objtree) \ |
| 377 | $(RUST_LIB_SRC) > $(objtree)/rust-project.json |
| 378 | |
| 379 | redirect-intrinsics = \ |
| 380 | __eqsf2 __gesf2 __lesf2 __nesf2 __unordsf2 \ |
| 381 | __unorddf2 \ |
| 382 | __muloti4 __multi3 \ |
| 383 | __udivmodti4 __udivti3 __umodti3 |
| 384 | |
| 385 | ifneq ($(or $(CONFIG_ARM64),$(and $(CONFIG_RISCV),$(CONFIG_64BIT))),) |
| 386 | # These intrinsics are defined for ARM64 and RISCV64 |
| 387 | redirect-intrinsics += \ |
| 388 | __ashrti3 \ |
| 389 | __ashlti3 __lshrti3 |
| 390 | endif |
| 391 | |
| 392 | $(obj)/core.o: private skip_clippy = 1 |
| 393 | $(obj)/core.o: private skip_flags = -Dunreachable_pub |
| 394 | $(obj)/core.o: private rustc_objcopy = $(foreach sym,$(redirect-intrinsics),--redefine-sym $(sym)=__rust$(sym)) |
| 395 | $(obj)/core.o: private rustc_target_flags = $(core-cfgs) |
| 396 | $(obj)/core.o: $(RUST_LIB_SRC)/core/src/lib.rs scripts/target.json FORCE |
| 397 | $(call if_changed_dep,rustc_library) |
| 398 | |
| 399 | $(obj)/compiler_builtins.o: private rustc_objcopy = -w -W '__*' |
| 400 | $(obj)/compiler_builtins.o: $(src)/compiler_builtins.rs $(obj)/core.o FORCE |
| 401 | $(call if_changed_dep,rustc_library) |
| 402 | |
| 403 | $(obj)/alloc.o: private skip_clippy = 1 |
| 404 | $(obj)/alloc.o: private skip_flags = -Dunreachable_pub |
| 405 | $(obj)/alloc.o: private rustc_target_flags = $(alloc-cfgs) |
| 406 | $(obj)/alloc.o: $(src)/alloc/lib.rs $(obj)/compiler_builtins.o FORCE |
| 407 | $(call if_changed_dep,rustc_library) |
| 408 | |
| 409 | $(obj)/build_error.o: $(src)/build_error.rs $(obj)/compiler_builtins.o FORCE |
| 410 | $(call if_changed_dep,rustc_library) |
| 411 | |
| 412 | $(obj)/bindings.o: $(src)/bindings/lib.rs \ |
| 413 | $(obj)/compiler_builtins.o \ |
| 414 | $(obj)/bindings/bindings_generated.rs \ |
| 415 | $(obj)/bindings/bindings_helpers_generated.rs FORCE |
| 416 | $(call if_changed_dep,rustc_library) |
| 417 | |
| 418 | $(obj)/uapi.o: $(src)/uapi/lib.rs \ |
| 419 | $(obj)/compiler_builtins.o \ |
| 420 | $(obj)/uapi/uapi_generated.rs FORCE |
| 421 | $(call if_changed_dep,rustc_library) |
| 422 | |
| 423 | $(obj)/kernel.o: private rustc_target_flags = --extern alloc \ |
| 424 | --extern build_error --extern macros --extern bindings --extern uapi |
| 425 | $(obj)/kernel.o: $(src)/kernel/lib.rs $(obj)/alloc.o $(obj)/build_error.o \ |
| 426 | $(obj)/libmacros.so $(obj)/bindings.o $(obj)/uapi.o FORCE |
| 427 | $(call if_changed_dep,rustc_library) |
| 428 | |
| 429 | endif # CONFIG_RUST |