package/pkg-cargo.mk: fix building cargo packages on 32bit arm

There are duplicated symbols between rustc and gcc. Specifying --allow-multiple-definition to the linker as workaround until rustc is fixed. rust-lang issue: rust-lang/compiler-builtins#420 Fixes: http://autobuild.buildroot.net/results/53f/53f5598b8e520caaa135fb4923c09da382dab329 Signed-off-by: Moritz Bitsch <[email protected]> Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <[email protected]>
woodsts · Mar 7, 2022 · f439f7c · f439f7c
1 parent 08f6960
commit f439f7c
Showing 1 changed file with 8 additions and 0 deletions.
diff --git a/package/pkg-cargo.mk b/package/pkg-cargo.mk
@@ -46,6 +46,14 @@ PKG_CARGO_ENV = \
 	CARGO_BUILD_TARGET="$(RUSTC_TARGET_NAME)" \
 	CARGO_TARGET_$(call UPPERCASE,$(RUSTC_TARGET_NAME))_LINKER=$(notdir $(TARGET_CROSS))gcc
 
+#
+# This is a workaround for https://github.com/rust-lang/compiler-builtins/issues/420
+# and should be removed when fixed upstream
+#
+ifeq ($(NORMALIZED_ARCH),arm)
+	PKG_CARGO_ENV += RUSTFLAGS="-Clink-arg=-Wl,--allow-multiple-definition"
+endif
+
 HOST_PKG_CARGO_ENV = \
 	$(PKG_COMMON_CARGO_ENV)