[PATCH V7 1/4] rust: Fix a race condition in Makefile
From: Mukesh Kumar Chaurasiya (IBM) <hidden>
Date: 2026-03-29 16:03:16
Also in:
lkml, rust-for-linux
Subsystem:
rust, the rest · Maintainers:
Miguel Ojeda, Linus Torvalds
When compiling with -j1 flag in powerpc, the libproc_macro finds the libcore.rmeta both in toolchain and local rust directory. libproc_macro should use the toolchain provided libcore.rmeta. So for this, make libproc_macro2 libquote and libsyn dependent on core.o so that libcore.rmeta is generated after these 3 files are done compiling. Signed-off-by: Mukesh Kumar Chaurasiya (IBM) <redacted> --- rust/Makefile | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/rust/Makefile b/rust/Makefile
index 9801af2e1e02..8e62f6fcf94f 100644
--- a/rust/Makefile
+++ b/rust/Makefile@@ -650,7 +650,8 @@ $(obj)/core.o: private skip_flags = $(core-skip_flags) $(obj)/core.o: private rustc_objcopy = $(foreach sym,$(redirect-intrinsics),--redefine-sym $(sym)=__rust$(sym)) $(obj)/core.o: private rustc_target_flags = $(core-flags) $(obj)/core.o: $(RUST_LIB_SRC)/core/src/lib.rs \ - $(wildcard $(objtree)/include/config/RUSTC_VERSION_TEXT) FORCE + $(wildcard $(objtree)/include/config/RUSTC_VERSION_TEXT) FORCE \ + | $(obj)/libproc_macro2.rlib $(obj)/libquote.rlib $(obj)/libsyn.rlib FORCE +$(call if_changed_rule,rustc_library) ifneq ($(or $(CONFIG_X86_64),$(CONFIG_X86_32)),) $(obj)/core.o: scripts/target.json
--
2.53.0