Index: acinclude.m4
==================================================================
--- acinclude.m4
+++ acinclude.m4
@@ -10,10 +10,19 @@
 
 AC_DEFUN([TCLTLS_SSL_OPENSSL], [
 	dnl Determine if pkg-config tool is available
 	AC_CHECK_TOOL([PKG_CONFIG], [pkg-config])
 
+	dnl Enable support for SSL 3.0 protocol
+	AC_ARG_ENABLE([ssl3], AS_HELP_STRING([--disable-ssl3], [disable SSL3 protocol]), [
+		if test "${enableval}" == "no"; then
+			AC_DEFINE([NO_SSL3], [1], [Disable SSL3 protocol])
+			AC_MSG_CHECKING([for disable SSL3 protocol])
+			AC_MSG_RESULT([yes])
+		fi
+	], AC_DEFINE([NO_SSL3], [1], [Disable SSL3 protocol]))
+
 	dnl Disable support for TLS 1.0 protocol
 	AC_ARG_ENABLE([tls1], AS_HELP_STRING([--disable-tls1], [disable TLS1 protocol]), [
 		if test "${enableval}" == "no"; then
 			AC_DEFINE([NO_TLS1], [1], [Disable TLS1 protocol])
 			AC_MSG_CHECKING([for disable TLS1 protocol])

Index: configure
==================================================================
--- configure
+++ configure
@@ -766,10 +766,11 @@
 enable_stubs
 enable_64bit
 enable_64bit_vis
 enable_rpath
 enable_symbols
+enable_ssl3
 enable_tls1
 enable_tls1_1
 enable_tls1_2
 enable_tls1_3
 enable_ssl_fastpath
@@ -1416,10 +1417,11 @@
                           shared builds (default: on)
   --enable-64bit          enable 64bit support (default: off)
   --enable-64bit-vis      enable 64bit Sparc VIS support (default: off)
   --disable-rpath         disable rpath support (default: on)
   --enable-symbols        build with debugging symbols (default: off)
+  --disable-ssl3          disable SSL3 protocol
   --disable-tls1          disable TLS1 protocol
   --disable-tls1_1        disable TLS1.1 protocol
   --disable-tls1_2        disable TLS1.2 protocol
   --disable-tls1_3        disable TLS1.3 protocol
   --enable-ssl-fastpath   enable using the underlying file descriptor for
@@ -9277,10 +9279,32 @@
   fi
 else
   PKG_CONFIG="$ac_cv_prog_PKG_CONFIG"
 fi
 
+
+		# Check whether --enable-ssl3 was given.
+if test ${enable_ssl3+y}
+then :
+  enableval=$enable_ssl3;
+		if test "${enableval}" == "no"; then
+
+printf "%s\n" "#define NO_SSL3 1" >>confdefs.h
+
+			{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for disable SSL3 protocol" >&5
+printf %s "checking for disable SSL3 protocol... " >&6; }
+			{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+		fi
+
+else case e in #(
+  e)
+printf "%s\n" "#define NO_SSL3 1" >>confdefs.h
+ ;;
+esac
+fi
+
 
 		# Check whether --enable-tls1 was given.
 if test ${enable_tls1+y}
 then :
   enableval=$enable_tls1;