1 files changed, 27 insertions, 0 deletions
diff --git a/contrib/libfido2/src/diff_exports.sh b/contrib/libfido2/src/diff_exports.sh
new file mode 100755
index 000000000000..2e15cd0c5b9b
--- /dev/null
+++ b/contrib/libfido2/src/diff_exports.sh
@@ -0,0 +1,27 @@
+#!/bin/sh -u
+
+# Copyright (c) 2018 Yubico AB. All rights reserved.
+# Use of this source code is governed by a BSD-style
+# license that can be found in the LICENSE file.
+# SPDX-License-Identifier: BSD-2-Clause
+
+for f in export.gnu export.llvm export.msvc; do
+	if [ ! -f "${f}" ]; then
+		exit 1
+	fi
+done
+
+TMPDIR="$(mktemp -d)"
+GNU="${TMPDIR}/gnu"
+LLVM="${TMPDIR}/llvm"
+MSVC="${TMPDIR}/msvc"
+
+awk '/^[^*{}]+;$/' export.gnu | tr -d '\t;' | sort > "${GNU}"
+sed 's/^_//' export.llvm | sort > "${LLVM}"
+grep -v '^EXPORTS$' export.msvc | sort > "${MSVC}"
+diff -u "${GNU}" "${LLVM}" && diff -u "${MSVC}" "${LLVM}"
+ERROR=$?
+rm "${GNU}" "${LLVM}" "${MSVC}"
+rmdir "${TMPDIR}"
+
+exit ${ERROR}