Add test script for doxygen warnings
diff --git a/tests/scripts/doxygen.sh b/tests/scripts/doxygen.sh
new file mode 100755
index 0000000..5a00c90
--- /dev/null
+++ b/tests/scripts/doxygen.sh
@@ -0,0 +1,25 @@
+#!/bin/sh
+
+# Make sure the doxygen documentation builds without warnings
+
+# Abort on errors (and uninitiliased variables)
+set -eu
+
+if [ -d library -a -d include -a -d tests ]; then :; else
+ echo "Must be run from mbed TLS root" >&2
+ exit 1
+fi
+
+if make apidoc > doc.out 2>doc.err; then :; else
+ cat doc.err
+ echo "FAIL" >&2
+ exit 1;
+fi
+
+if grep warning doc.out doc.err; then
+ echo "FAIL" >&2
+ exit 1;
+fi
+
+make apidoc_clean
+rm -f doc.out doc.err
