diff -Nuar a/ogr/ogrsf_frmts/mysql/ogrmysqldatasource.cpp b/ogr/ogrsf_frmts/mysql/ogrmysqldatasource.cpp
--- a/ogr/ogrsf_frmts/mysql/ogrmysqldatasource.cpp	2018-05-04 09:09:26.000000000 +0200
+++ b/ogr/ogrsf_frmts/mysql/ogrmysqldatasource.cpp	2018-05-11 23:07:44.284558300 +0200
@@ -235,7 +235,7 @@
         // Enable automatic reconnection
         // Must be called after mysql_real_connect() on MySQL < 5.0.19
         // and at any point on more recent versions.
-        my_bool reconnect = 1;
+        bool reconnect = 1;
         mysql_options(hConn, MYSQL_OPT_RECONNECT, &reconnect);
     }