core: python3

see https://review.gluster.org/#/c/19788/,
    https://review.gluster.org/#/c/19871/,
    https://review.gluster.org/#/c/19952/,
    https://review.gluster.org/#/c/20104/,
    https://review.gluster.org/#/c/20162/,
    https://review.gluster.org/#/c/20185/,
    https://review.gluster.org/#/c/20207/,
    https://review.gluster.org/#/c/20227/,
    https://review.gluster.org/#/c/20307/,
    https://review.gluster.org/#/c/20320/,
    https://review.gluster.org/#/c/20332/,
    https://review.gluster.org/#/c/20364/,
    https://review.gluster.org/#/c/20441/, and
    https://review.gluster.org/#/c/20484

shebangs changed from /usr/bin/python2 to /usr/bin/python3.
(Reminder, various distribution packaging guidelines require use
of explicit python version and don't allow '#!/usr/bin/env python',
regardless of how handy that idiom may be.)

glusterfs.spec(.in) package python{2,3}-gluster and python2 or
python3 dependencies as appropriate.

configure(.ac):
+ test for and use python2 or python3 as appropriate. If build
  machine has python2 and python3, use python3. Override by
  setting PYTHON=/usr/bin/python2 when running configure.
+ PYTHONDEV_CPPFLAGS from python[23]-config --includes is a
  better match to the original python sysconfig.get_python_inc().
  All those other extraneous flags breaks the build.
+ Only change the shebangs once. Changing them over and over
  again, e.g., during a `make glusterrpms` in extras/LinuxRPM
  just sends make (is it really make that's looping?) into an
  infinite loop. If you figure out why, let me know.
+ Oldest python2 is python2.6 on CentOS 6 and Debian 8 (Jessie).
  Everything else has 2.7 or 3.x
+ logic from https://review.gluster.org/c/glusterfs/+/21050, which
  needs to be removed/merged after that patch is merged.

Builds on CentOS 6, CentOS 7, Fedora 28, Fedora rawhide, and the
mysterious RHEL > 7.

Change-Id: Idae21d3b6f58b32372e1daa0d234e491e563198f
updates: #411
Signed-off-by: Kaleb S. KEITHLEY <kkeithle@redhat.com>

12 files changed, 13 insertions, 13 deletions

diff --git a/extras/cliutils/README.md b/extras/cliutils/README.md
index 2e0ffe772c7..e11166774e3 100644
--- a/extras/cliutils/README.md
+++ b/extras/cliutils/README.md
@@ -81,7 +81,7 @@ to address the following issues
 Create a file in `$LIBEXEC/glusterfs/peer_message.py` with following
 content.
 
-    #!/usr/bin/python2
+    #!/usr/bin/python3
     from gluster.cliutils import Cmd, runcli, execute_in_peers, node_output_ok
 
     class NodeHello(Cmd):
@@ -149,7 +149,7 @@ Now users can use `gluster-message` instead of calling
 Following example uses prettytable library, which can be installed
 using `pip install prettytable` or `dnf install python-prettytable`
 
-    #!/usr/bin/python2
+    #!/usr/bin/python3
     from prettytable import PrettyTable
     from gluster.cliutils import Cmd, runcli, execute_in_peers, node_output_ok
 
diff --git a/extras/create_new_xlator/generate_xlator.py b/extras/create_new_xlator/generate_xlator.py
index 2746e90893d..2c554c991c9 100755
--- a/extras/create_new_xlator/generate_xlator.py
+++ b/extras/create_new_xlator/generate_xlator.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python2
+#!/usr/bin/python3
 
 from __future__ import print_function
 import os
diff --git a/extras/distributed-testing/distributed-test-runner.py b/extras/distributed-testing/distributed-test-runner.py
index 4d6313625db..7bfb6c9652a 100755
--- a/extras/distributed-testing/distributed-test-runner.py
+++ b/extras/distributed-testing/distributed-test-runner.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python2
+#!/usr/bin/python3
 
 from __future__ import absolute_import
 from __future__ import division
diff --git a/extras/failed-tests.py b/extras/failed-tests.py
index 0f5ad38aa09..f7f110246b5 100755
--- a/extras/failed-tests.py
+++ b/extras/failed-tests.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python2
+#!/usr/bin/python3
 
 from __future__ import print_function
 import blessings
diff --git a/extras/geo-rep/schedule_georep.py.in b/extras/geo-rep/schedule_georep.py.in
index 38d8f500ad6..79af80b841a 100644
--- a/extras/geo-rep/schedule_georep.py.in
+++ b/extras/geo-rep/schedule_georep.py.in
@@ -1,4 +1,4 @@
-#!/usr/bin/python2
+#!/usr/bin/python3
 """
 Schedule Geo-replication
 ------------------------
diff --git a/extras/hook-scripts/S40ufo-stop.py b/extras/hook-scripts/S40ufo-stop.py
index 48ee1c788b6..2c79eb1d54a 100755
--- a/extras/hook-scripts/S40ufo-stop.py
+++ b/extras/hook-scripts/S40ufo-stop.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python2
+#!/usr/bin/python3
 
 import os
 from optparse import OptionParser
diff --git a/extras/profiler/glusterfs-profiler b/extras/profiler/glusterfs-profiler
index 5f5e4ed8dbd..aaafd088648 100755
--- a/extras/profiler/glusterfs-profiler
+++ b/extras/profiler/glusterfs-profiler
@@ -1,4 +1,4 @@
-#!/usr/bin/python2
+#!/usr/bin/python3
 
 #  Copyright (c) 2006-2012 Red Hat, Inc. <http://www.redhat.com>
 #  This file is part of GlusterFS.
diff --git a/extras/quota/xattr_analysis.py b/extras/quota/xattr_analysis.py
index 780ff340677..7bd7d96374c 100755
--- a/extras/quota/xattr_analysis.py
+++ b/extras/quota/xattr_analysis.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python2
+#!/usr/bin/python3
 # Below script has two purposes
 #  1. Display xattr of entire FS tree in a human readable form
 #  2. Display all the directory where contri and size mismatch.
diff --git a/extras/rebalance.py b/extras/rebalance.py
index 6dd364b9028..59d7af96d88 100755
--- a/extras/rebalance.py
+++ b/extras/rebalance.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python2
+#!/usr/bin/python3
 
 from __future__ import print_function
 import atexit
diff --git a/extras/snap_scheduler/conf.py.in b/extras/snap_scheduler/conf.py.in
index e04b6cb008b..35838005fc2 100644
--- a/extras/snap_scheduler/conf.py.in
+++ b/extras/snap_scheduler/conf.py.in
@@ -1,4 +1,4 @@
-#!/usr/bin/python2
+#!/usr/bin/python3
 #
 # Copyright (c) 2016 Red Hat, Inc. <http://www.redhat.com>
 # This file is part of GlusterFS.
diff --git a/extras/snap_scheduler/gcron.py b/extras/snap_scheduler/gcron.py
index de79562ceab..1c8569dcd85 100755
--- a/extras/snap_scheduler/gcron.py
+++ b/extras/snap_scheduler/gcron.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python2
+#!/usr/bin/python3
 #
 # Copyright (c) 2015 Red Hat, Inc. <http://www.redhat.com>
 # This file is part of GlusterFS.
diff --git a/extras/snap_scheduler/snap_scheduler.py b/extras/snap_scheduler/snap_scheduler.py
index f0868d8b57d..09859844efc 100755
--- a/extras/snap_scheduler/snap_scheduler.py
+++ b/extras/snap_scheduler/snap_scheduler.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python2
+#!/usr/bin/python3
 #
 # Copyright (c) 2015 Red Hat, Inc. <http://www.redhat.com>
 # This file is part of GlusterFS.