Merge "Add flavor.mk to indicate that this is OpenSSL."
diff --git a/flavor.mk b/flavor.mk
new file mode 100644
index 0000000..f32fe41
--- /dev/null
+++ b/flavor.mk
@@ -0,0 +1,4 @@
+# This makefile exists to be included by makefiles in other directories so that
+# they can detect whether BoringSSL or OpenSSL is being used.
+
+OPENSSL_FLAVOR=OpenSSL