--- include/openssl/opensslfeatures.h.orig	Fri Jul 28 06:04:42 2023
+++ include/openssl/opensslfeatures.h	Fri Jul 28 06:09:00 2023
@@ -8,6 +8,13 @@
 #define LIBRESSL_HAS_TLS1_3
 #define LIBRESSL_HAS_DTLS1_2
 
+/*
+ * Used for compatibility with compilers lacking __attribute__
+ */
+#if defined(_MSC_VER) && !defined(__clang__) && !defined(__attribute__)
+#define __attribute__(a)
+#endif
+
 #define OPENSSL_THREADS
 
 #define OPENSSL_NO_BUF_FREELISTS
--- crypto/crypto_internal.h.orig	Sat Dec 14 14:15:39 2024
+++ crypto/crypto_internal.h	Sat Dec 14 14:15:52 2024
@@ -15,6 +15,8 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
+#include <openssl/opensslfeatures.h>
+
 #include <endian.h>
 #include <stddef.h>
 #include <stdint.h>
--- tests/parse_test_file.h.orig	Thu Dec 26 01:13:00 2024
+++ tests/parse_test_file.h	Thu Dec 26 01:13:27 2024
@@ -22,6 +22,8 @@
 #include <stdint.h>
 #include <stdio.h>
 
+#include <openssl/opensslfeatures.h>
+
 #include "bytestring.h"
 
 #if defined(__cplusplus)