1 files changed, 28 insertions, 10 deletions
diff --git a/ext/openssl/ossl.h b/ext/openssl/ossl.h
index 65d022c7f3..68d42b71e2 100644
--- a/ext/openssl/ossl.h
+++ b/ext/openssl/ossl.h
@@ -18,6 +18,7 @@
 #include <ruby/io.h>
 #include <ruby/thread.h>
 #include <openssl/opensslv.h>
+
 #include <openssl/err.h>
 #include <openssl/asn1.h>
 #include <openssl/x509v3.h>
@@ -30,9 +31,6 @@
   #include <openssl/ts.h>
 #endif
 #include <openssl/crypto.h>
-#if !defined(OPENSSL_NO_ENGINE)
-#  include <openssl/engine.h>
-#endif
 #if !defined(OPENSSL_NO_OCSP)
 #  include <openssl/ocsp.h>
 #endif
@@ -42,6 +40,32 @@
 #include <openssl/evp.h>
 #include <openssl/dh.h>
 
+#ifndef LIBRESSL_VERSION_NUMBER
+# define OSSL_IS_LIBRESSL 0
+# define OSSL_OPENSSL_PREREQ(maj, min, pat) \
+      (OPENSSL_VERSION_NUMBER >= ((maj << 28) | (min << 20) | (pat << 12)))
+# define OSSL_LIBRESSL_PREREQ(maj, min, pat) 0
+#else
+# define OSSL_IS_LIBRESSL 1
+# define OSSL_OPENSSL_PREREQ(maj, min, pat) 0
+# define OSSL_LIBRESSL_PREREQ(maj, min, pat) \
+      (LIBRESSL_VERSION_NUMBER >= ((maj << 28) | (min << 20) | (pat << 12)))
+#endif
+
+#if OSSL_OPENSSL_PREREQ(3, 0, 0)
+# define OSSL_3_const const
+#else
+# define OSSL_3_const /* const */
+#endif
+
+#if !defined(OPENSSL_NO_ENGINE) && !OSSL_OPENSSL_PREREQ(3, 0, 0)
+# define OSSL_USE_ENGINE
+#endif
+
+#if OSSL_OPENSSL_PREREQ(3, 0, 0)
+# define OSSL_USE_PROVIDER
+#endif
+
 /*
  * Common Module
  */
@@ -137,7 +161,6 @@ VALUE ossl_to_der_if_possible(VALUE);
  */
 extern VALUE dOSSL;
 
-#if defined(HAVE_VA_ARGS_MACRO)
 #define OSSL_Debug(...) do { \
   if (dOSSL == Qtrue) { \
     fprintf(stderr, "OSSL_DEBUG: "); \
@@ -146,16 +169,10 @@ extern VALUE dOSSL;
   } \
 } while (0)
 
-#else
-void ossl_debug(const char *, ...);
-#define OSSL_Debug ossl_debug
-#endif
-
 /*
  * Include all parts
  */
 #include "openssl_missing.h"
-#include "ruby_missing.h"
 #include "ossl_asn1.h"
 #include "ossl_bio.h"
 #include "ossl_bn.h"
@@ -175,6 +192,7 @@ void ossl_debug(const char *, ...);
 #endif
 #include "ossl_x509.h"
 #include "ossl_engine.h"
+#include "ossl_provider.h"
 #include "ossl_kdf.h"
 
 void Init_openssl(void);