Compilation issues of the curses module on Solaris and OpenIndiana

[vstinner]

BPO	13552
Nosy	@jcea, @vstinner, @tpn
Files	curses_hacks.patch

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = None
closed_at = <Date 2017-06-28.01:42:40.076>
created_at = <Date 2011-12-08.00:53:17.521>
labels = ['build']
title = 'Compilation issues of the curses module on Solaris and OpenIndiana'
updated_at = <Date 2017-06-28.01:42:40.074>
user = 'https://github.com/vstinner'

bugs.python.org fields:

activity = <Date 2017-06-28.01:42:40.074>
actor = 'vstinner'
assignee = 'none'
closed = True
closed_date = <Date 2017-06-28.01:42:40.076>
closer = 'vstinner'
components = ['Build']
creation = <Date 2011-12-08.00:53:17.521>
creator = 'vstinner'
dependencies = []
files = ['23873']
hgrepos = []
issue_num = 13552
keywords = ['patch']
message_count = 6.0
messages = ['149007', '149010', '155145', '164784', '178874', '297131']
nosy_count = 7.0
nosy_names = ['jcea', 'vstinner', 'enchanter', 'trent', 'mschmarck', 'iandekit', 'Justin.Venus']
pr_nums = []
priority = 'normal'
resolution = 'out of date'
stage = 'resolved'
status = 'closed'
superseder = None
type = None
url = 'https://bugs.python.org/issue13552'
versions = ['Python 3.3']

[vstinner]

The _curses module has two issues on OpenSolaris:

• using the default curses library, mvwchgat() cannot be found and _curses module compilation fails
• there is a "XPG4 curses" library. I tried to use it using various hacks in _cursesmodule.c and setup.py, but test_curses failed with a crash.
• if the readline library (not the Python module) is linked to libncursesw, the compilation of the _curses module fails because cchar_t is not defined. I suppose that curses.h is the bytes library, not the ncursesw Unicode library.

See issue bpo-12567 for the ncursesw issue and issue bpo-3786 for the mvwchgat() problem. The issue bpo-3786 contains information about XPG4 curses and has a (non working) patch for the mvwchgat() issue.

--

I opened a new issue because bpo-12567 is more specific to Unicode, and bpo-3786 talks about various issues (it is not specific to curses).

[vstinner]

curses_hacks.patch: various hacks to use the XPG4 curses on OpenIndiana.

[vstinner]

Jesús Cea Avión also noticed in msg143798 from the issue bpo-6755:

I have compiled ncurses myself, supporting wide characters. I get this warnings in the buildbots:

"""
/export/home/buildbot/32bits/3.x.cea-indiana-x86/build/Modules/_cursesmodule.c:920: warning: implicit declaration of function 'wget_wch'
/export/home/buildbot/32bits/3.x.cea-indiana-x86/build/Modules/_cursesmodule.c:927: warning: implicit declaration of function 'mvwget_wch'
/export/home/buildbot/32bits/3.x.cea-indiana-x86/build/Modules/_cursesmodule.c:2760: warning: implicit declaration of function 'unget_wch'
"""

Studying the "ncurses.h", I see the definition of "wget_wch" and others. But these definitions are created only if "_XOPEN_SOURCE_EXTENDED" is defined.

Something to be explored?.

[JustinVenus]

Does OpenIndiana ship with the gnu version of ncurses like Solaris 11?

Headers:
/usr/include/ncurses

Libraries:
/usr/gnu/lib

If it matches Solaris, then you can use my patch[1] in bpo-3786 to see if that works around the issue, like it does for Solaris.

1. http://bugs.python.org/file26171/bug3786.patch

[vstinner]

What is the status of this issue? Is curses still broken on Python 3.4?

[vstinner]

The OpenIndiana buildbot is offline. The Solaris buildbot was removed. We cannot develop on these operating systems, so I just close the issue. Sorry.