projects/linux·blob v6.8 · refs

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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 $(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 $(rustdoc_output) -name '*.html' -type f -print0 | xargs -0 sed -Ei \
100 -e 's:rust-logo-[0-9a-f]+\.svg:logo.svg:g' \
101 -e 's:favicon-[0-9a-f]+\.svg:logo.svg:g' \
102 -e 's:<link rel="alternate icon" type="image/png" href="[/.]+/static\.files/favicon-(16x16|32x32)-[0-9a-f]+\.png">::g' \
103 -e 's:<a href="srctree/([^"]+)">:<a href="$(abs_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 $(rust_flags) \
178 @$(objtree)/include/generated/rustc_cfg \
179 -L$(objtree)/$(obj) --extern alloc --extern kernel \
180 --extern build_error --extern macros \
181 --extern bindings --extern uapi \
182 --no-run --crate-name kernel -Zunstable-options \
183 --sysroot=/dev/null \
184 --test-builder $(objtree)/scripts/rustdoc_test_builder \
185 $< $(rustdoc_test_kernel_quiet); \
186 $(objtree)/scripts/rustdoc_test_gen
187
188%/doctests_kernel_generated.rs %/doctests_kernel_generated_kunit.c: \
189 $(src)/kernel/lib.rs $(obj)/kernel.o \
190 $(objtree)/scripts/rustdoc_test_builder \
191 $(objtree)/scripts/rustdoc_test_gen FORCE
192 $(call if_changed,rustdoc_test_kernel)
193
194# We cannot use `-Zpanic-abort-tests` because some tests are dynamic,
195# so for the moment we skip `-Cpanic=abort`.
196quiet_cmd_rustc_test = RUSTC T $<
197 cmd_rustc_test = \
198 OBJTREE=$(abspath $(objtree)) \
199 $(RUSTC) --test $(rust_common_flags) \
200 @$(objtree)/include/generated/rustc_cfg \
201 $(rustc_target_flags) --out-dir $(objtree)/$(obj)/test \
202 --sysroot $(objtree)/$(obj)/test/sysroot \
203 -L$(objtree)/$(obj)/test \
204 --crate-name $(subst rusttest-,,$@) $<; \
205 $(objtree)/$(obj)/test/$(subst rusttest-,,$@) $(rust_test_quiet) \
206 $(rustc_test_run_flags)
207
208rusttest: rusttest-macros rusttest-kernel
209
210# This prepares a custom sysroot with our custom `alloc` instead of
211# the standard one.
212#
213# This requires several hacks:
214# - Unlike `core` and `alloc`, `std` depends on more than a dozen crates,
215# including third-party crates that need to be downloaded, plus custom
216# `build.rs` steps. Thus hardcoding things here is not maintainable.
217# - `cargo` knows how to build the standard library, but it is an unstable
218# feature so far (`-Zbuild-std`).
219# - `cargo` only considers the use case of building the standard library
220# to use it in a given package. Thus we need to create a dummy package
221# and pick the generated libraries from there.
222# - Since we only keep a subset of upstream `alloc` in-tree, we need
223# to recreate it on the fly by putting our sources on top.
224# - The usual ways of modifying the dependency graph in `cargo` do not seem
225# to apply for the `-Zbuild-std` steps, thus we have to mislead it
226# by modifying the sources in the sysroot.
227# - To avoid messing with the user's Rust installation, we create a clone
228# of the sysroot. However, `cargo` ignores `RUSTFLAGS` in the `-Zbuild-std`
229# steps, thus we use a wrapper binary passed via `RUSTC` to pass the flag.
230#
231# In the future, we hope to avoid the whole ordeal by either:
232# - Making the `test` crate not depend on `std` (either improving upstream
233# or having our own custom crate).
234# - Making the tests run in kernel space (requires the previous point).
235# - Making `std` and friends be more like a "normal" crate, so that
236# `-Zbuild-std` and related hacks are not needed.
237quiet_cmd_rustsysroot = RUSTSYSROOT
238 cmd_rustsysroot = \
239 rm -rf $(objtree)/$(obj)/test; \
240 mkdir -p $(objtree)/$(obj)/test; \
241 cp -a $(rustc_sysroot) $(objtree)/$(obj)/test/sysroot; \
242 cp -r $(srctree)/$(src)/alloc/* \
243 $(objtree)/$(obj)/test/sysroot/lib/rustlib/src/rust/library/alloc/src; \
244 echo '\#!/bin/sh' > $(objtree)/$(obj)/test/rustc_sysroot; \
245 echo "$(RUSTC) --sysroot=$(abspath $(objtree)/$(obj)/test/sysroot) \"\$$@\"" \
246 >> $(objtree)/$(obj)/test/rustc_sysroot; \
247 chmod u+x $(objtree)/$(obj)/test/rustc_sysroot; \
248 $(CARGO) -q new $(objtree)/$(obj)/test/dummy; \
249 RUSTC=$(objtree)/$(obj)/test/rustc_sysroot $(CARGO) $(cargo_quiet) \
250 test -Zbuild-std --target $(rustc_host_target) \
251 --manifest-path $(objtree)/$(obj)/test/dummy/Cargo.toml; \
252 rm $(objtree)/$(obj)/test/sysroot/lib/rustlib/$(rustc_host_target)/lib/*; \
253 cp $(objtree)/$(obj)/test/dummy/target/$(rustc_host_target)/debug/deps/* \
254 $(objtree)/$(obj)/test/sysroot/lib/rustlib/$(rustc_host_target)/lib
255
256rusttest-prepare: FORCE
257 $(call if_changed,rustsysroot)
258
259rusttest-macros: private rustc_target_flags = --extern proc_macro
260rusttest-macros: private rustdoc_test_target_flags = --crate-type proc-macro
261rusttest-macros: $(src)/macros/lib.rs rusttest-prepare FORCE
262 $(call if_changed,rustc_test)
263 $(call if_changed,rustdoc_test)
264
265rusttest-kernel: private rustc_target_flags = --extern alloc \
266 --extern build_error --extern macros --extern bindings --extern uapi
267rusttest-kernel: $(src)/kernel/lib.rs rusttest-prepare \
268 rusttestlib-build_error rusttestlib-macros rusttestlib-bindings \
269 rusttestlib-uapi FORCE
270 $(call if_changed,rustc_test)
271 $(call if_changed,rustc_test_library)
272
273ifdef CONFIG_CC_IS_CLANG
274bindgen_c_flags = $(c_flags)
275else
276# bindgen relies on libclang to parse C. Ideally, bindgen would support a GCC
277# plugin backend and/or the Clang driver would be perfectly compatible with GCC.
278#
279# For the moment, here we are tweaking the flags on the fly. This is a hack,
280# and some kernel configurations may not work (e.g. `GCC_PLUGIN_RANDSTRUCT`
281# if we end up using one of those structs).
282bindgen_skip_c_flags := -mno-fp-ret-in-387 -mpreferred-stack-boundary=% \
283 -mskip-rax-setup -mgeneral-regs-only -msign-return-address=% \
284 -mindirect-branch=thunk-extern -mindirect-branch-register \
285 -mfunction-return=thunk-extern -mrecord-mcount -mabi=lp64 \
286 -mindirect-branch-cs-prefix -mstack-protector-guard% -mtraceback=no \
287 -mno-pointers-to-nested-functions -mno-string \
288 -mno-strict-align -mstrict-align \
289 -fconserve-stack -falign-jumps=% -falign-loops=% \
290 -femit-struct-debug-baseonly -fno-ipa-cp-clone -fno-ipa-sra \
291 -fno-partial-inlining -fplugin-arg-arm_ssp_per_task_plugin-% \
292 -fno-reorder-blocks -fno-allow-store-data-races -fasan-shadow-offset=% \
293 -fzero-call-used-regs=% -fno-stack-clash-protection \
294 -fno-inline-functions-called-once -fsanitize=bounds-strict \
295 -fstrict-flex-arrays=% \
296 --param=% --param asan-%
297
298# Derived from `scripts/Makefile.clang`.
299BINDGEN_TARGET_x86 := x86_64-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 $(abs_srctree) $(abs_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 scripts/target.json FORCE
438 $(call if_changed_dep,rustc_library)
439
440$(obj)/compiler_builtins.o: private rustc_objcopy = -w -W '__*'
441$(obj)/compiler_builtins.o: $(src)/compiler_builtins.rs $(obj)/core.o FORCE
442 $(call if_changed_dep,rustc_library)
443
444$(obj)/alloc.o: private skip_clippy = 1
445$(obj)/alloc.o: private skip_flags = -Dunreachable_pub
446$(obj)/alloc.o: private rustc_target_flags = $(alloc-cfgs)
447$(obj)/alloc.o: $(src)/alloc/lib.rs $(obj)/compiler_builtins.o FORCE
448 $(call if_changed_dep,rustc_library)
449
450$(obj)/build_error.o: $(src)/build_error.rs $(obj)/compiler_builtins.o FORCE
451 $(call if_changed_dep,rustc_library)
452
453$(obj)/bindings.o: $(src)/bindings/lib.rs \
454 $(obj)/compiler_builtins.o \
455 $(obj)/bindings/bindings_generated.rs \
456 $(obj)/bindings/bindings_helpers_generated.rs FORCE
457 $(call if_changed_dep,rustc_library)
458
459$(obj)/uapi.o: $(src)/uapi/lib.rs \
460 $(obj)/compiler_builtins.o \
461 $(obj)/uapi/uapi_generated.rs FORCE
462 $(call if_changed_dep,rustc_library)
463
464$(obj)/kernel.o: private rustc_target_flags = --extern alloc \
465 --extern build_error --extern macros --extern bindings --extern uapi
466$(obj)/kernel.o: $(src)/kernel/lib.rs $(obj)/alloc.o $(obj)/build_error.o \
467 $(obj)/libmacros.so $(obj)/bindings.o $(obj)/uapi.o FORCE
468 $(call if_changed_dep,rustc_library)
469
470endif # CONFIG_RUST