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rust: kbuild: add proc macro library support 

Add the proc macro library rule that produces `.rlib` files to be used
by proc macros such as the `macros` crate.

Reviewed-by: Gary Guo <gary@garyguo.net>
Tested-by: Gary Guo <gary@garyguo.net>
Tested-by: Jesung Yang <y.j3ms.n@gmail.com>
Link: https://patch.msgid.link/20251124151837.2184382-4-ojeda@kernel.org
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
This commit is contained in:
Miguel Ojeda 2025-11-24 16:18:15 +01:00
parent 1181c97442
commit 7dbe46c0b1
2 changed files with 11 additions and 0 deletions
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1
.gitignore vendored
View File

@ -41,6 +41,7 @@
*.o.* *.o.*
*.patch *.patch
*.pyc *.pyc
*.rlib
*.rmeta *.rmeta
*.rpm *.rpm
*.rsi *.rsi

10
rust/Makefile
View File

@ -421,6 +421,16 @@ $(obj)/exports_bindings_generated.h: $(obj)/bindings.o FORCE
$(obj)/exports_kernel_generated.h: $(obj)/kernel.o FORCE $(obj)/exports_kernel_generated.h: $(obj)/kernel.o FORCE
$(call if_changed,exports) $(call if_changed,exports)
quiet_cmd_rustc_procmacrolibrary = $(RUSTC_OR_CLIPPY_QUIET) PL $@
cmd_rustc_procmacrolibrary = \
$(if $(skip_clippy),$(RUSTC),$(RUSTC_OR_CLIPPY)) \
$(filter-out $(skip_flags),$(rust_common_flags) $(rustc_target_flags)) \
--emit=dep-info,link --crate-type rlib -O \
--out-dir $(objtree)/$(obj) -L$(objtree)/$(obj) \
--crate-name $(patsubst lib%.rlib,%,$(notdir $@)) $<; \
mv $(objtree)/$(obj)/$(patsubst lib%.rlib,%,$(notdir $@)).d $(depfile); \
sed -i '/^\#/d' $(depfile)
quiet_cmd_rustc_procmacro = $(RUSTC_OR_CLIPPY_QUIET) P $@ quiet_cmd_rustc_procmacro = $(RUSTC_OR_CLIPPY_QUIET) P $@
cmd_rustc_procmacro = \ cmd_rustc_procmacro = \
$(RUSTC_OR_CLIPPY) $(rust_common_flags) $(rustc_target_flags) \ $(RUSTC_OR_CLIPPY) $(rust_common_flags) $(rustc_target_flags) \