Fix build against OpenSSL 1.1 without pkg-config

Author: DaveRandom

scripts/autotools/libmongoc/CheckSSL.m4

@@ -82,12 +82,25 @@ AS_IF([test "$PHP_MONGODB_SSL" = "openssl" -o "$PHP_MONGODB_SSL" = "auto"],[
                       [have_crypto_lib="yes"],
                       [have_crypto_lib="no"],
                       [$OPENSSL_LIBDIR_LDFLAG])
+
+    have_ssl_lib="no"
+
+    dnl OpenSSL < 1.1.0
     PHP_CHECK_LIBRARY([ssl],
                       [SSL_library_init],
                       [have_ssl_lib="yes"],
-                      [have_ssl_lib="no"],
+                      [],
                       [$OPENSSL_LIBDIR_LDFLAG -lcrypto])
 
+    dnl OpenSSL >= 1.1.0
+    if test "$have_ssl_lib" = "no"; then
+      PHP_CHECK_LIBRARY([ssl],
+                        [OPENSSL_init_ssl],
+                        [have_ssl_lib="yes"],
+                        [],
+                        [$OPENSSL_LIBDIR_LDFLAG -lcrypto])
+    fi
+
     if test "$have_ssl_lib" = "yes" -a "$have_crypto_lib" = "yes"; then
       PHP_ADD_LIBRARY([ssl],,[MONGODB_SHARED_LIBADD])
       PHP_ADD_LIBRARY([crypto],,[MONGODB_SHARED_LIBADD])