From: Viktor Szakats <commit@vsz.me>
Date: Tue, 28 Jan 2025 15:51:18 +0000 (+0100)
Subject: cmake: warn for OpenSSL versions missing TLS 1.3 support
X-Git-Tag: curl-8_12_0~19
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=34c1c653fc475efb828658f900979596905c688e;p=thirdparty%2Fcurl.git

cmake: warn for OpenSSL versions missing TLS 1.3 support

To match existing warnings for Secure Transport and BearSSL.

OpenSSL 1.1.1 or upper are offering TLS 1.3 support.

Ref: https://wiki.openssl.org/index.php/TLS1.3

Closes #16120
---

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2d869882fe..0a81ef41e1 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -778,6 +778,9 @@ if(CURL_USE_OPENSSL)
     set(_openssl "AmiSSL")
   else()
     set(_openssl "OpenSSL")
+    if(OPENSSL_VERSION VERSION_LESS 1.1.1)
+      message(WARNING "OpenSSL ${OPENSSL_VERSION} does not support TLS 1.3.")
+    endif()
   endif()
 endif()