diff --git a/tmp/list-symbols.sh b/tmp/list-symbols.sh
new file mode 100755
index 0000000..9f10c62
--- /dev/null
+++ b/tmp/list-symbols.sh
@@ -0,0 +1,17 @@
+#!/bin/sh
+
+set -eu
+
+if grep -i cmake Makefile >/dev/null; then
+    echo "not compatible with cmake" >&2
+    exit 1
+fi
+
+cp include/mbedtls/config.h{,.bak}
+scripts/config.pl full
+CFLAGS=-fno-asynchronous-unwind-tables make clean lib >/dev/null 2>&1
+mv include/mbedtls/config.h{.bak,}
+nm -gUj library/libmbedtls.a 2>/dev/null | sed -n -e 's/^_//p' | sort > exported-symbols
+make clean
+
+wc -l exported-symbols