PGXS support for contrib/hstore

Joey Adams

contrib/hstore/Makefile

 # contrib/hstore/Makefile
 
-subdir = contrib/hstore
-top_builddir = ../..
-include $(top_builddir)/src/Makefile.global
-
 MODULE_big = hstore
 OBJS = hstore_io.o hstore_op.o hstore_gist.o hstore_gin.o hstore_compat.o \
 	crc32.o
@@ -12,4 +8,13 @@ DATA_built = hstore.sql
 DATA = uninstall_hstore.sql
 REGRESS = hstore
 
+ifdef USE_PGXS
+PG_CONFIG = pg_config
+PGXS := $(shell $(PG_CONFIG) --pgxs)
+include $(PGXS)
+else
+subdir = contrib/hstore
+top_builddir = ../..
+include $(top_builddir)/src/Makefile.global
 include $(top_srcdir)/contrib/contrib-global.mk
+endif