Re: BUG #14308: Postgres 9.5.4 does not configure against OpenSSL 1.1.0

The following gets past the OpenSSL 1.1.0 configuration problems.

It was tested against Postgres 9.5.4 and Master (6591f4226c81104f).
Thanks to ldav1s at http://stackoverflow.com/q/39285733 (I'm an
OpenSSL guy; not an Autoconf guy).

$ git diff configure.in > configure.in.patch
riemann:postgresql$ cat configure.in.patch
diff --git a/configure.in b/configure.in
index c878b4e..c12bfb6 100644
--- a/configure.in
+++ b/configure.in
@@ -1112,10 +1112,16 @@ if test "$with_openssl" = yes ; then
   dnl Order matters!
   if test "$PORTNAME" != "win32"; then
      AC_CHECK_LIB(crypto, CRYPTO_new_ex_data, [],
[AC_MSG_ERROR([library 'crypto' is required for OpenSSL])])
-     AC_CHECK_LIB(ssl,    SSL_library_init, [],
[AC_MSG_ERROR([library 'ssl' is required for OpenSSL])])
+     FOUND_SSL_LIB="no"
+     AC_CHECK_LIB(ssl, OPENSSL_init_ssl, [FOUND_SSL_LIB="yes"])
+     AC_CHECK_LIB(ssl, SSL_library_init, [FOUND_SSL_LIB="yes"])
+     AS_IF([test "x$FOUND_SSL_LIB" = xno], [AC_MSG_ERROR([library
'ssl' is required for OpenSSL])])
   else
      AC_SEARCH_LIBS(CRYPTO_new_ex_data, eay32 crypto, [],
[AC_MSG_ERROR([library 'eay32' or 'crypto' is required for OpenSSL])])
-     AC_SEARCH_LIBS(SSL_library_init, ssleay32 ssl, [],
[AC_MSG_ERROR([library 'ssleay32' or 'ssl' is required for OpenSSL])])
+     FOUND_SSL_LIB="no"
+     AC_SEARCH_LIBS(ssleay32 ssl, OPENSSL_init_ssl, [FOUND_SSL_LIB="yes"])
+     AC_SEARCH_LIBS(ssleay32 ssl, SSL_library_init, [FOUND_SSL_LIB="yes"])
+     AS_IF([test "x$FOUND_SSL_LIB" = xno], [AC_MSG_ERROR([library
'ssleay32' or 'ssl' is required for OpenSSL])])
   fi
   AC_CHECK_FUNCS([SSL_get_current_compression])
 fi

On Fri, Sep 2, 2016 at 2:21 AM, Michael Paquier
<michael.paquier@gmail.com> wrote:
> On Fri, Sep 2, 2016 at 3:10 PM,  <noloader@gmail.com> wrote:
>> OpenSSL 1.1.0 does not use SSL_library_init. Instead, it uses
>> OPENSSL_init_ssl.
>
> The work to be done with OpenSSL 1.1.0 is discussed here:
> https://www.postgresql.org/message-id/20160627151604.GD1051@msg.df7cb.de
> I'd expect a patch to land soon.
> --
> Michael