From 1eaf1fc353729ce696ac2528471d551d51175b8e Mon Sep 17 00:00:00 2001
From: Pauli <ppzgs1@gmail.com>
Date: Wed, 10 Feb 2021 21:53:57 +1000
Subject: [PATCH] Add a configure time option to disable the fetch cache.

Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/14126)
---
 Configure  | 1 +
 INSTALL.md | 8 ++++++++
 2 files changed, 9 insertions(+)

diff --git a/Configure b/Configure
index 9a96a7f0c0..cd11b2e393 100755
--- a/Configure
+++ b/Configure
@@ -392,6 +392,7 @@ my @disablables = (
     "blake2",
     "buildtest-c++",
     "bulk",
+    "cached-fetch",
     "camellia",
     "capieng",
     "cast",
diff --git a/INSTALL.md b/INSTALL.md
index e005312bc0..d9aa5c47c2 100644
--- a/INSTALL.md
+++ b/INSTALL.md
@@ -582,6 +582,14 @@ alternative, you can use the language specific variables, `CFLAGS` and `CXXFLAGS
 Build only some minimal set of features.
 This is a developer option used internally for CI build tests of the project.
 
+### no-cached-fetch
+
+Never cache algorithms when they are fetched from a provider.  Normally, a
+provider indicates if the algorithms it supplies can be cached or not.  Using
+this option will reduce run-time memory usage but it also introduces a
+significant performance penalty.  This option is primarily designed to help
+with detecting incorrect reference counting.
+
 ### no-capieng
 
 Don't build the CAPI engine.