Add USE_PGXS autoconfig

diff --git a/Makefile b/Makefile
index c850670..a06a180 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -37,6 +37,12 @@ EXTRA_CLEAN = sql/ut_anyarray-*.sql expected/ut_anyarray-*.out \
        export_stats.dmp ut-fdw.csv $(DATA) $(STARBALLS) RPMS/*/* \
        *~
 
+ifndef USE_PGXS
+ifeq ($(wildcard ../../contrib/contrib-global.mk),)
+       USE_PGXS=1
+endif
+endif
+
 ifdef USE_PGXS
 PG_CONFIG = pg_config
 PGXS := $(shell $(PG_CONFIG) --pgxs)