5 files changed, 22 insertions, 0 deletions
diff --git a/configure b/configure
index 75979166efe..ac0d98e2a4d 100755
--- a/configure
+++ b/configure
@@ -8509,6 +8509,17 @@ else
   as_fn_error $? "library 'ssl' is required for OpenSSL" "$LINENO" 5
 fi
 
+     for ac_func in SSL_get_current_compression
+do :
+  ac_fn_c_check_func "$LINENO" "SSL_get_current_compression" "ac_cv_func_SSL_get_current_compression"
+if test "x$ac_cv_func_SSL_get_current_compression" = xyes; then :
+  cat >>confdefs.h <<_ACEOF
+#define HAVE_SSL_GET_CURRENT_COMPRESSION 1
+_ACEOF
+
+fi
+done
+
   else
      { $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing CRYPTO_new_ex_data" >&5
 $as_echo_n "checking for library containing CRYPTO_new_ex_data... " >&6; }
diff --git a/configure.in b/configure.in
index 9d1f1187645..32eda48f631 100644
--- a/configure.in
+++ b/configure.in
@@ -950,6 +950,7 @@ if test "$with_openssl" = yes ; then
   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])])
+     AC_CHECK_FUNCS([SSL_get_current_compression])
   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])])
diff --git a/src/include/pg_config.h.in b/src/include/pg_config.h.in
index 2a40d6140bd..4383ad5172c 100644
--- a/src/include/pg_config.h.in
+++ b/src/include/pg_config.h.in
@@ -430,6 +430,9 @@
 /* Define to 1 if you have the `srandom' function. */
 #undef HAVE_SRANDOM
 
+/* Define to 1 if you have the `SSL_get_current_compression' function. */
+#undef HAVE_SSL_GET_CURRENT_COMPRESSION
+
 /* Define to 1 if you have the <stdint.h> header file. */
 #undef HAVE_STDINT_H
 
diff --git a/src/include/pg_config.h.win32 b/src/include/pg_config.h.win32
index 1c9cd82b838..f7c2419252b 100644
--- a/src/include/pg_config.h.win32
+++ b/src/include/pg_config.h.win32
@@ -337,6 +337,9 @@
 /* Define to 1 if you have the `srandom' function. */
 /* #undef HAVE_SRANDOM */
 
+/* Define to 1 if you have the `SSL_get_current_compression' function. */
+#define HAVE_SSL_GET_CURRENT_COMPRESSION 1
+
 /* Define to 1 if you have the <stdint.h> header file. */
 /* #undef HAVE_STDINT_H */
 
diff --git a/src/include/port.h b/src/include/port.h
index 3d974818344..9f8465e78ad 100644
--- a/src/include/port.h
+++ b/src/include/port.h
@@ -420,6 +420,10 @@ extern void unsetenv(const char *name);
 extern void srandom(unsigned int seed);
 #endif
 
+#ifndef HAVE_SSL_GET_CURRENT_COMPRESSION
+#define SSL_get_current_compression(x) 0
+#endif
+
 /* thread.h */
 extern char *pqStrerror(int errnum, char *strerrbuf, size_t buflen);