rust: fix double build of kernel.o

nbdd0121 · nbdd0121 · commit 9fd4e5778b83 · 2021-05-20T20:30:15.000+01:00
Reported-by: Sven Van Asbroeck &lt;thesven73@gmail.com&gt;
Signed-off-by: Gary Guo &lt;gary@garyguo.net&gt;
diff --git a/rust/Makefile b/rust/Makefile
@@ -11,6 +11,8 @@ extra-$(CONFIG_RUST) += exports_alloc_generated.h exports_kernel_generated.h
 
 ifndef CONFIG_RUST_BUILD_ASSERT_DENY
 obj-$(CONFIG_RUST) += build_error.o
+else
+extra-$(CONFIG_RUST) += build_error.o
 endif
 
 obj-$(CONFIG_RUST) += exports.o
