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-rw-r--r--lib/sha1.h18
1 files changed, 16 insertions, 2 deletions
diff --git a/lib/sha1.h b/lib/sha1.h
index 854213a..940163e 100644
--- a/lib/sha1.h
+++ b/lib/sha1.h
@@ -1,6 +1,6 @@
/* Declarations of functions and data types used for SHA1 sum
library functions.
- Copyright (C) 2000-2001, 2003, 2005-2006, 2008-2023 Free Software
+ Copyright (C) 2000-2001, 2003, 2005-2006, 2008-2024 Free Software
Foundation, Inc.
This file is free software: you can redistribute it and/or modify
@@ -31,7 +31,21 @@
# ifndef OPENSSL_API_COMPAT
# define OPENSSL_API_COMPAT 0x10101000L /* FIXME: Use OpenSSL 1.1+ API. */
# endif
-# include <openssl/sha.h>
+/* If <openssl/macros.h> would give a compile-time error, don't use OpenSSL. */
+# include <openssl/opensslv.h>
+# if OPENSSL_VERSION_MAJOR >= 3
+# include <openssl/configuration.h>
+# if (OPENSSL_CONFIGURED_API \
+ < (OPENSSL_API_COMPAT < 0x900000L ? OPENSSL_API_COMPAT : \
+ ((OPENSSL_API_COMPAT >> 28) & 0xF) * 10000 \
+ + ((OPENSSL_API_COMPAT >> 20) & 0xFF) * 100 \
+ + ((OPENSSL_API_COMPAT >> 12) & 0xFF)))
+# undef HAVE_OPENSSL_SHA1
+# endif
+# endif
+# if HAVE_OPENSSL_SHA1
+# include <openssl/sha.h>
+# endif
# endif
# ifdef __cplusplus