EXTENSION    = $(shell grep -m 1 '"name":' META.json | \
               sed -e 's/[[:space:]]*"name":[[:space:]]*"\([^"]*\)",/\1/')
EXTVERSION   = $(shell grep -m 1 '[[:space:]]\{6\}"version":' META.json | \
               sed -e 's/[[:space:]]*"version":[[:space:]]*"\([^"]*\)",\{0,1\}/\1/')
DISTVERSION  = $(shell grep -m 1 '[[:space:]]\{3\}"version":' META.json | \
               sed -e 's/[[:space:]]*"version":[[:space:]]*"\([^"]*\)",\{0,1\}/\1/')

EXTVERSIONS = 0.1.2

DATA 		 = $(wildcard sql/*--*.sql)
DATA_built   = $(foreach v,$(EXTVERSIONS),sql/$(EXTENSION)--$(v).sql)

DOCS         = $(wildcard doc/*.md)
TESTS        = $(wildcard test/sql/*.sql)
REGRESS      = $(patsubst test/sql/%.sql,%,$(TESTS))
REGRESS_OPTS = --inputdir=test
PG_CONFIG = pg_config
EXTRA_CLEAN = sql/$(EXTENSION)--$(EXTVERSION).sql

PGXS := $(shell $(PG_CONFIG) --pgxs)
include $(PGXS)

all: sql/$(EXTENSION)--$(EXTVERSION).sql

dist:
	git archive --format zip --prefix=$(EXTENSION)-$(DISTVERSION)/ -o $(EXTENSION)-$(DISTVERSION).zip HEAD

latest-changes.md: Changes
	perl -e 'while (<>) {last if /^(v?\Q${DISTVERSION}\E)/; } print "Changes for v${DISTVERSION}:\n"; while (<>) { last if /^\s*$$/; s/^\s+//; print }' Changes > $@

# generate each version's file installation file by concatenating
# previous upgrade scripts
sql/$(EXTENSION)--0.1.2.sql: sql/$(EXTENSION).sql
	cat $^ > $@