Merge commit 'd2f9129f94b8b5f543e4890ec31419c1ea0d53d1' into PGPROEE10_scheduler

Author: Vladimir Ershov

contrib/pgpro_scheduler/Makefile

@@ -23,7 +23,9 @@ ifdef USE_PGXS
 else
 	subdir = contrib/pgpro_scheduler
 	top_builddir = ../..
-	PG_CPPFLAGS = -D_WITH_MTM -I$(top_srcdir)/contrib/mmts -I$(libpq_srcdir)
+	ifneq ($(MAJORVERSION),10)
+		PG_CPPFLAGS = -D_WITH_MTM -I$(top_srcdir)/contrib/mmts -I$(libpq_srcdir)
+	endif
 	include $(top_builddir)/src/Makefile.global
 	include $(top_srcdir)/contrib/contrib-global.mk
 endif