Tweaking build options a bit more

postgresql/installation/Makefile

@@ -1,6 +1,8 @@
 HERE := $(PWD)
 DOWNLOAD_ROOT := http://ftp.postgresql.org/pub/source/
+PG_PORT := 25432
 PG_VERSION := 9.1.4
+PYTHON3 := $(shell which python3)
 TARBALL_BASENAME := postgresql-$(PG_VERSION)
 TARBALL_URL := $(DOWNLOAD_ROOT)/v$(PG_VERSION)/$(TARBALL_BASENAME).tar.bz2
 
@@ -22,7 +24,8 @@ $(TARBALL_BASENAME)/configure: $(TARBALL_BASENAME).tar.bz2
 	tar xjvf $< && touch $@
 
 $(HERE)/bin/pg_ctl: $(TARBALL_BASENAME)/configure
-	cd $(TARBALL_BASENAME) && ./configure \
+	cd $(TARBALL_BASENAME) && \
+		PYTHON=$(PYTHON3) ./configure \
 		--prefix=$(HERE) \
 		--with-python \
 		--with-perl \
@@ -30,7 +33,8 @@ $(HERE)/bin/pg_ctl: $(TARBALL_BASENAME)/configure
 		--with-tclconfig=/usr/lib/tcl8.5 \
 		--with-openssl \
 		--with-libxml \
-		--with-libxslt  && \
+		--with-libxslt \
+		--with-pgport=$(PG_PORT) && \
 		make && \
 		make install