diff --git a/build-llvm.sh b/build-llvm.sh
index c950cfa..ecd55db 100755
--- a/build-llvm.sh
+++ b/build-llvm.sh
@@ -191,6 +191,7 @@ if [ -n "$HOST" ]; then
         CMAKEFLAGS="$CMAKEFLAGS -DCMAKE_C_COMPILER=clang"
         CMAKEFLAGS="$CMAKEFLAGS -DCMAKE_CXX_COMPILER=clang++"
         CMAKEFLAGS="$CMAKEFLAGS -DLLVM_USE_LINKER=lld"
+        CMAKEFLAGS="$CMAKEFLAGS -DCMAKE_ASM_COMPILER_TARGET=$HOST"
         CMAKEFLAGS="$CMAKEFLAGS -DCMAKE_C_COMPILER_TARGET=$HOST"
         CMAKEFLAGS="$CMAKEFLAGS -DCMAKE_CXX_COMPILER_TARGET=$HOST"
     else