KSSL: Add names for OpenSSL 3.x libraries to SSL libraries search.

Use OPENSSL_SHLIB_VERSION for default libraries version.

This relates to issue #176.

Signed-off-by: Slávek Banko <slavek.banko@axis.cz>
(cherry picked from commit cb87252f7d)

tdeio/kssl/kopenssl.cpp

@@ -33,6 +33,8 @@
 #include <unistd.h>
 #include "kopenssl.h"
 
+#define STRINGIFY(x) #x
+
 #define GET_CRYPTOLIB_SYMBOL(a) ((_cryptoLib->hasSymbol(a)) ? _cryptoLib->symbol(a) : NULL)
 #define GET_SSLLIB_SYMBOL(a) ((_sslLib->hasSymbol(a)) ? _sslLib->symbol(a) : NULL)
 
@@ -367,10 +369,14 @@ TDEConfig *cfg;
 	     << "libssl.dylib"
 	     << "libssl.0.9.dylib"
 	     #else
+	       #ifdef OPENSSL_SHLIB_VERSION
+	       << "libssl.so." STRINGIFY(OPENSSL_SHLIB_VERSION)
+	       #endif
 	       #ifdef SHLIB_VERSION_NUMBER
 	       << "libssl.so." SHLIB_VERSION_NUMBER
 	       #endif
 	       << "libssl.so"
+	       << "libssl.so.3"
 	       << "libssl.so.0"
 	     #endif
 	     ;
@@ -384,10 +390,14 @@ TDEConfig *cfg;
 	     << "libcrypto.dylib"
 	     << "libcrypto.0.9.dylib"
 	     #else
+	       #ifdef OPENSSL_SHLIB_VERSION
+	       << "libcrypto.so." STRINGIFY(OPENSSL_SHLIB_VERSION)
+	       #endif
 	       #ifdef SHLIB_VERSION_NUMBER
 	       << "libcrypto.so." SHLIB_VERSION_NUMBER
 	       #endif
 	       << "libcrypto.so"
+	       << "libcrypto.so.3"
 	       << "libcrypto.so.0"
 	     #endif
 	     ;