Add notice of caching whether the compiler is MSVC
Signed-off-by: Bence Szépkúti <bence.szepkuti@arm.com>
diff --git a/scripts/mbedtls_dev/c_build_helper.py b/scripts/mbedtls_dev/c_build_helper.py
index 4ce96eb..d02deb3 100644
--- a/scripts/mbedtls_dev/c_build_helper.py
+++ b/scripts/mbedtls_dev/c_build_helper.py
@@ -115,6 +115,9 @@
to ``cc``. If ``CC`` looks like MSVC, use its command line syntax,
otherwise assume the compiler supports Unix traditional ``-I`` and ``-o``.
+ NOTE: This function only checks the identity of the compiler referred to by
+ ``CC`` on its first invocation, and caches the result.
+
Return the list of values of the ``expressions``.
"""
if include_path is None: