From b291e003c04431557c7369c12f2febd1aa233109 Mon Sep 17 00:00:00 2001
From: Fabian Greffrath <fabian@greffrath.com>
Date: Fri, 27 Nov 2020 09:17:04 +0100
Subject: [PATCH] build: use python3 exclusively

Python 2 is deprecated and is going to be removed from Linux
distributions in the short term [1,2]. Thus, (parts of) the build
process will fail on current systems like e.g. Debian unstable.

The /bin/python binary is not going to exist anymore. The canonical
name for the Python 3 binary is, you guess it, /bin/python3. So, let's
just use this during our build process and go future proof.

Fixes #1158.

[1] https://wiki.debian.org/Python#Python_in_Debian
[2] https://wiki.debian.org/Python/2Removal
---
 configure.ac                  |    2 +-
 data/convert-icon             |    2 +-
 man/docgen                    |    2 +-
 man/simplecpp                 |    2 +-
 pkg/win32/cp-with-libs        |    2 +-
 textscreen/fonts/convert-font |    2 +-
 6 files changed, 6 insertions(+), 6 deletions(-)

Index: chocolate-doom-3.0.1/configure.ac
===================================================================
--- chocolate-doom-3.0.1.orig/configure.ac
+++ chocolate-doom-3.0.1/configure.ac
@@ -16,7 +16,7 @@ orig_CFLAGS="$CFLAGS"
 
 AC_PROG_CC
 AC_PROG_RANLIB
-AC_CHECK_PROG(HAVE_PYTHON, python, true, false)
+AC_CHECK_PROG(HAVE_PYTHON, python3, true, false)
 
 OPT_LEVEL=2
 
Index: chocolate-doom-3.0.1/data/convert-icon
===================================================================
--- chocolate-doom-3.0.1.orig/data/convert-icon
+++ chocolate-doom-3.0.1/data/convert-icon
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #
 # Copyright(C) 2005-2014 Simon Howard
 #
Index: chocolate-doom-3.0.1/man/docgen
===================================================================
--- chocolate-doom-3.0.1.orig/man/docgen
+++ chocolate-doom-3.0.1/man/docgen
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # 
 # Chocolate Doom self-documentation tool.  This works similar to javadoc
 # or doxygen, but documents command line parameters and configuration
Index: chocolate-doom-3.0.1/man/simplecpp
===================================================================
--- chocolate-doom-3.0.1.orig/man/simplecpp
+++ chocolate-doom-3.0.1/man/simplecpp
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #
 # Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
 # Contributors to the Freedoom project.  All rights reserved.
Index: chocolate-doom-3.0.1/pkg/win32/cp-with-libs
===================================================================
--- chocolate-doom-3.0.1.orig/pkg/win32/cp-with-libs
+++ chocolate-doom-3.0.1/pkg/win32/cp-with-libs
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #
 # Copyright(C) 2016 Simon Howard
 #
Index: chocolate-doom-3.0.1/textscreen/fonts/convert-font
===================================================================
--- chocolate-doom-3.0.1.orig/textscreen/fonts/convert-font
+++ chocolate-doom-3.0.1/textscreen/fonts/convert-font
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #
 # Copyright(C) 2016 Simon Howard
 #