packaging: allow to run make with python3
Use "?=", otherwise the variable cannot be set from environment.
--- a/Makefile Wed Apr 03 11:21:27 2019 -0700
+++ b/Makefile Thu Apr 04 19:06:48 2019 +0200
@@ -5,7 +5,7 @@
# % make PREFIX=/opt/ install
export PREFIX=/usr/local
-PYTHON=python
+PYTHON?=python
$(eval HGROOT := $(shell pwd))
HGPYTHONS ?= $(HGROOT)/build/pythons
PURE=
--- a/doc/Makefile Wed Apr 03 11:21:27 2019 -0700
+++ b/doc/Makefile Thu Apr 04 19:06:48 2019 +0200
@@ -6,7 +6,7 @@
PREFIX=/usr/local
MANDIR=$(PREFIX)/share/man
INSTALL=install -c -m 644
-PYTHON=python
+PYTHON?=python
RSTARGS=
export HGENCODING=UTF-8