From 172d1dce6a099f32d31321b5aeee4675acec6ebb Mon Sep 17 00:00:00 2001
From: Fabian Sauter <sauter.fabian@mailbox.org>
Date: Wed, 27 Dec 2023 19:13:02 +0100
Subject: [PATCH] Fixed openssl/types.h include for ubuntu20.04

---
 cpr/ssl_ctx.cpp | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/cpr/ssl_ctx.cpp b/cpr/ssl_ctx.cpp
index f628809bb..64f3d384c 100644
--- a/cpr/ssl_ctx.cpp
+++ b/cpr/ssl_ctx.cpp
@@ -11,10 +11,16 @@
 #include <openssl/bio.h>
 #include <openssl/pem.h>
 #include <openssl/ssl.h>
-#include <openssl/types.h>
 #include <openssl/x509.h>
 #include <openssl/x509_vfy.h>
 
+// openssl/types.h was added in later version of openssl and is therefore not always available.
+// This is for example the case on Ubuntu 20.04.
+// We try to include it if available to satisfy clang-tidy.
+#if __has_include(<openssl/types.h>)
+#include <openssl/types.h>
+#endif
+
 namespace cpr {
 
 /**