Custom rules must come after pgxs inclusion, not before, because any
rule added before pgxs will break the default 'all' target.
Author: Cédric Villemain <cedric@2ndquadrant.fr>
# Use the following layout for your Makefile:
#
# [variable assignments, see below]
-# [custom rules, rarely necessary]
#
# PG_CONFIG = pg_config
# PGXS := $(shell $(PG_CONFIG) --pgxs)
# include $(PGXS)
#
+# [custom rules, rarely necessary]
+#
# Set one of these three variables to specify what is built:
#
# MODULES -- list of shared-library objects to be built from source files