3 files changed, 11 insertions, 7 deletions

diff --git a/meta/classes/rust-common.bbclass b/meta/classes/rust-common.bbclass
index 8cfe864ca3..65ad677499 100644
--- a/meta/classes/rust-common.bbclass
+++ b/meta/classes/rust-common.bbclass
@@ -89,6 +89,10 @@ def rust_base_triple(d, thing):
         libc = bb.utils.contains('TUNE_FEATURES', 'callconvention-hard', 'hf', '', d)
     return arch + vendor + '-' + os + libc
 
+
+# In some cases uname and the toolchain differ on their idea of the arch name
+RUST_BUILD_ARCH = "${@oe.rust.arch_to_rust_arch(d.getVar('BUILD_ARCH'))}"
+
 # Naming explanation
 # Yocto
 # - BUILD_SYS - Yocto triple of the build environment
diff --git a/meta/recipes-devtools/rust/rust-snapshot.inc b/meta/recipes-devtools/rust/rust-snapshot.inc
index 74b558262f..173648c889 100644
--- a/meta/recipes-devtools/rust/rust-snapshot.inc
+++ b/meta/recipes-devtools/rust/rust-snapshot.inc
@@ -15,11 +15,11 @@ SRC_URI[rustc-snapshot-aarch64.sha256sum] = "f26811e48d03c56c125de03d389e1ae7c6d
 SRC_URI[cargo-snapshot-aarch64.sha256sum] = "6d11cd94618d80cda273eeeae7285980445f61a49ebacc616777b482a41cbf3f"
 
 SRC_URI += " \
-    https://static.rust-lang.org/dist/${RUST_STD_SNAPSHOT}.tar.xz;name=rust-std-snapshot-${BUILD_ARCH};subdir=rust-snapshot-components \
-    https://static.rust-lang.org/dist/${RUSTC_SNAPSHOT}.tar.xz;name=rustc-snapshot-${BUILD_ARCH};subdir=rust-snapshot-components \
-    https://static.rust-lang.org/dist/${CARGO_SNAPSHOT}.tar.xz;name=cargo-snapshot-${BUILD_ARCH};subdir=rust-snapshot-components \
+    https://static.rust-lang.org/dist/${RUST_STD_SNAPSHOT}.tar.xz;name=rust-std-snapshot-${RUST_BUILD_ARCH};subdir=rust-snapshot-components \
+    https://static.rust-lang.org/dist/${RUSTC_SNAPSHOT}.tar.xz;name=rustc-snapshot-${RUST_BUILD_ARCH};subdir=rust-snapshot-components \
+    https://static.rust-lang.org/dist/${CARGO_SNAPSHOT}.tar.xz;name=cargo-snapshot-${RUST_BUILD_ARCH};subdir=rust-snapshot-components \
 "
 
-RUST_STD_SNAPSHOT = "rust-std-${RS_VERSION}-${BUILD_ARCH}-unknown-linux-gnu"
-RUSTC_SNAPSHOT = "rustc-${RS_VERSION}-${BUILD_ARCH}-unknown-linux-gnu"
-CARGO_SNAPSHOT = "cargo-${CARGO_VERSION}-${BUILD_ARCH}-unknown-linux-gnu"
+RUST_STD_SNAPSHOT = "rust-std-${RS_VERSION}-${RUST_BUILD_ARCH}-unknown-linux-gnu"
+RUSTC_SNAPSHOT = "rustc-${RS_VERSION}-${RUST_BUILD_ARCH}-unknown-linux-gnu"
+CARGO_SNAPSHOT = "cargo-${CARGO_VERSION}-${RUST_BUILD_ARCH}-unknown-linux-gnu"
diff --git a/meta/recipes-devtools/rust/rust.inc b/meta/recipes-devtools/rust/rust.inc
index 1d6f99afad..f39228e3c0 100644
--- a/meta/recipes-devtools/rust/rust.inc
+++ b/meta/recipes-devtools/rust/rust.inc
@@ -27,7 +27,7 @@ CARGO_DISABLE_BITBAKE_VENDORING = "1"
 
 # We can't use RUST_BUILD_SYS here because that may be "musl" if
 # TCLIBC="musl". Snapshots are always -unknown-linux-gnu
-SNAPSHOT_BUILD_SYS = "${BUILD_ARCH}-unknown-linux-gnu"
+SNAPSHOT_BUILD_SYS = "${RUST_BUILD_ARCH}-unknown-linux-gnu"
 setup_cargo_environment () {
     # The first step is to build bootstrap and some early stage tools,
     # these are build for the same target as the snapshot, e.g.