# HG changeset patch
# User Gregory Szorc <gregory.szorc@gmail.com>
# Date 2020-10-06 02:46:31
# Node ID c2837640aeb0274f6c4684d545fa5e0db32ca569
# Parent  ee826f43cf4f38a799da2e747fcbda068d2a472e

makefile: use Python 3 by default (BC)

This change is long overdue IMO.

.. bc::

   Makefile now uses `python3` instead of `python` by default on
   non-Windows platforms. This means Mercurial will be built and
   run with Python 3 instead of Python 2.7 by default.

   To continue using Python 2, set the PYTHON variable. e.g.
   `make install PYTHON=python2.7`.

Differential Revision: https://phab.mercurial-scm.org/D7258

diff --git a/Makefile b/Makefile
--- a/Makefile
+++ b/Makefile
@@ -5,7 +5,16 @@
 # % make PREFIX=/opt/ install
 
 export PREFIX=/usr/local
+
+# Default to Python 3.
+#
+# Windows ships Python 3 as `python.exe`.
+ifeq ($(OS),Windows_NT)
 PYTHON?=python
+else
+PYTHON?=python3
+endif
+
 $(eval HGROOT := $(shell pwd))
 HGPYTHONS ?= $(HGROOT)/build/pythons
 PURE=