maintainer-feedback requested: [Bug 223443] multimedia/gstreamer1-libav: Does not build for Python 3.x

[bugzilla-noreply at freebsd.org]

Rainer Hurling <rhurlin at gwdg.de> has reassigned Bugzilla Automation
<bugzilla at FreeBSD.org>'s request for maintainer-feedback to
multimedia at FreeBSD.org:
Bug 223443: multimedia/gstreamer1-libav: Does not build for Python 3.x
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=223443



--- Description ---
In the process of preparing a new port for the upcoming QGIS3, I need to use
many QT5 and Python3 dependencies.

With 'DEFAULT_VERSIONS+= python=3.6 python3=3.6' in
${LOCALBASE}/etc/poudriere.d/make.conf, I am using Poudriere (recent
12.0-CURRENT amd64) for the test runs. Obviously, there is a problem with the
build of multimedia/gstreamer1-libav:


The relevant part of Poudriere log shows, that the port is not able to detect
Python 3.6:


[..snip..]
=======================<phase: configure      >============================
===>  Configuring for gstreamer1-libav-1.12.3_1
[..snip..]
checking for python... no
checking for python2... no
checking for python3... no
checking for python3.5... no
checking for python3.4... no
checking for python3.3... no
checking for python3.2... no
checking for python3.1... no
checking for python3.0... no
checking for python2.7... no
checking for python2.6... no
checking for python2.5... no
checking for python2.4... no
checking for python2.3... no
checking for python2.2... no
checking for python2.1... no
checking for python2.0... no
configure: error: no suitable Python interpreter found
===>  Script "configure" failed unexpectedly.



A small patch in the ports configure script would help, but leads to the next
problem:

--- configure.orig	2017-09-18 11:37:20 UTC
+++ configure
@@ -15510,7 +15510,7 @@ fi

	 # Find any Python interpreter.
     if test -z "$PYTHON"; then
-      for ac_prog in python python2 python3 python3.5 python3.4 python3.3
python3.2 python3.1 python3.0 python2.7  python2.6 python2.5 python2.4
python2.3 python2.2 python2.1 python2.0
+      for ac_prog in python python2 python3 python3.6 python3.5 python3.4
python3.3 python3.2 python3.1 python3.0 python2.7  python2.6 python2.5
python2.4 python2.3 python2.2 python2.1 python2.0
 do
   # Extract the first word of "$ac_prog", so it can be a program name with
args.
 set dummy $ac_prog; ac_word=$2



Poudriere now finds the right Python version, but stops because it does not
find automake-1.15:

[..snip..]
=======================<phase: configure      >============================
===>  Configuring for gstreamer1-libav-1.12.3_1
[..snip..]
checking for python... no
checking for python2... no
checking for python3... no
checking for python3.6... /usr/local/bin/python3.6
checking for python version... 3.6
checking for python platform... freebsd12
checking for python script directory... ${prefix}/lib/python3.6/site-packages
checking for python extension module directory...
${exec_prefix}/lib/python3.6/site-packages
[..snip..]
=======================<phase: build	      >============================
===>  Building for gstreamer1-libav-1.12.3_1
gmake[1]: Entering directory
'/wrkdirs/usr/ports/multimedia/gstreamer1-libav/work/gst-libav-1.12.3'
 cd . && /bin/sh
/wrkdirs/usr/ports/multimedia/gstreamer1-libav/work/gst-libav-1.12.3/missing
automake-1.15 --gnu
/wrkdirs/usr/ports/multimedia/gstreamer1-libav/work/gst-libav-1.12.3/missing:
automake-1.15: not found
WARNING: 'automake-1.15' is missing on your system.
	 You should only need it if you modified 'Makefile.am' or
	 'configure.ac' or m4 files included by 'configure.ac'.
	 The 'automake' program is part of the GNU Automake package:
	 <http://www.gnu.org/software/automake>
	 It also requires GNU Autoconf, GNU m4 and Perl in order to run:
	 <http://www.gnu.org/software/autoconf>
	 <http://www.gnu.org/software/m4/>
	 <http://www.perl.org/>
gmake[1]: *** [Makefile:479: Makefile.in] Error 1
gmake[1]: Leaving directory
'/wrkdirs/usr/ports/multimedia/gstreamer1-libav/work/gst-libav-1.12.3'
*** Error code 1



I don't know, what is the best way to solve this, sorry.