Debug bzip2 failure

Author: zanieb

cpython-unix/build-bzip2.sh

@@ -15,6 +15,11 @@ else
     AR=ar
 fi
 
+# Add compiler-rt for aarch64-musl to resolve missing __extenddftf2 and __multf3 symbols
+if [ "${TARGET_TRIPLE}" = "aarch64-unknown-linux-musl" ]; then
+    EXTRA_TARGET_LDFLAGS="${EXTRA_TARGET_LDFLAGS} --rtlib=compiler-rt -lcompiler-rt"
+fi
+
 tar -xf bzip2-${BZIP2_VERSION}.tar.gz
 
 pushd bzip2-${BZIP2_VERSION}