Re: [PATCH v10 5/5] rust: add arch_static_branch

[Miguel Ojeda <miguel.ojeda.sandonis@xxxxxxxxx>]

On Tue, Oct 15, 2024 at 1:06 PM kernel test robot <lkp@xxxxxxxxx> wrote:
>
> >> /bin/sh: 1: cannot create rust/kernel/arch_static_branch_asm.rs: Directory nonexistent

This happens because we run `RSCPP` even when it is not a target. We
can add the dependency conditionally:

@@ -423,8 +425,10 @@ $(obj)/uapi.o: $(src)/uapi/lib.rs \
 $(obj)/kernel.o: private rustc_target_flags = --extern alloc \
     --extern build_error --extern macros --extern bindings --extern uapi
 $(obj)/kernel.o: $(src)/kernel/lib.rs $(obj)/alloc.o $(obj)/build_error.o \
-    $(obj)/libmacros.so $(obj)/bindings.o $(obj)/uapi.o \
-       $(obj)/kernel/arch_static_branch_asm.rs FORCE
+    $(obj)/libmacros.so $(obj)/bindings.o $(obj)/uapi.o FORCE
        +$(call if_changed_rule,rustc_library)
+ifneq ($(CONFIG_JUMP_LABEL),)
+$(obj)/kernel.o: $(obj)/kernel/arch_static_branch_asm.rs
+endif

Cheers,
Miguel