Problem: Private/internal macros defined in public header.

Solution: Move the macros to a private header.

src/session_base.cpp

@@ -27,6 +27,7 @@
     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
+#include "macros.hpp"
 #include "session_base.hpp"
 #include "i_engine.hpp"
 #include "err.hpp"