diff --git a/tests/scripts/all-helpers.sh b/tests/scripts/all-helpers.sh
index 9ecf63d..06a9247 100644
--- a/tests/scripts/all-helpers.sh
+++ b/tests/scripts/all-helpers.sh
@@ -266,6 +266,15 @@
     fi
 }
 
+gcc_version() {
+    cc="$1"
+    if command -v clang > /dev/null ; then
+        "$cc" --version | sed -En '1s/^[^ ]* \([^)]*\) ([0-9]+).*/\1/p'
+    else
+        echo 0  # report version 0 for "no clang"
+    fi
+}
+
 can_run_cc_output() {
     cc="$1"
     result=1
@@ -302,3 +311,14 @@
     fi
     return $((! can_run_arm_linux_gnueabihf))
 }
+
+can_run_aarch64_linux_gnu () {
+    if [ -z "${can_run_aarch64_linux_gnu:-}" ]; then
+        if can_run_cc_output "${AARCH64_LINUX_GNU_GCC_PREFIX}gcc"; then
+            can_run_aarch64_linux_gnu=1
+        else
+            can_run_aarch64_linux_gnu=0
+        fi
+    fi
+    return $((! can_run_aarch64_linux_gnu))
+}