pw_tls_client: Add a build time backend
Implement a backend to facade pw_tls_client:time that uses build time
as the date time.
Change-Id: I5e2ed16198005c7e337e0cd8fcdeb08e977338c1
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/51044
Commit-Queue: Yecheng Zhao <zyecheng@google.com>
Reviewed-by: Ali Zhang <alizhang@google.com>
diff --git a/pw_tls_client/docs.rst b/pw_tls_client/docs.rst
index ab1bf19..1429ef5 100644
--- a/pw_tls_client/docs.rst
+++ b/pw_tls_client/docs.rst
@@ -63,6 +63,8 @@
obtaining date time. To accomodate the use of these libraries, a facade target
``pw_tls_client:time`` is added that wraps these APIs. For gn build,
specify the backend target with variable ``pw_tls_client_C_TIME_BACKEND``.
+``pw_tls_client_C_TIME_BACKEND`` defaults to the ``pw_tls_client::build_time``
+backend that returns build time.
If downstream project chooses to use other TLS libraires that handle time source
differently, then it needs to be investigated separately.