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Thiago Macieira 11604b5366 QHostInfo: adapt to glibc 2.26 no longer requiring us to res_init 
From the announcement[1]
  - The GNU C Library will now detect when /etc/resolv.conf has been
    modified and reload the changed configuration.  The new resolver
    option “no-reload” (RES_NORELOAD) disables this behavior.

Since glibc can do it, we don't have to call res_init before every
single getaddrinfo() call. And since we don't need to call res_init, we
don't need to load libresolv.so at all, until we need res_ninit.

We won't do it even if the user configured "no-reload" in
/etc/resolv.conf or RES_NORELOAD in the res variable -- let's assume
that it is the intent, like when /etc/resolv.conf is known to never
change.

[1] https://sourceware.org/ml/libc-alpha/2017-08/msg00010.html

Change-Id: I3868166e5efc45538544fffd14d738d40c375fd1
Reviewed-by: Timur Pocheptsov <timur.pocheptsov@qt.io>
2017-09-22 04:28:50 +00:00
bin don't try to timestamp injected qvulkanfunctions.h 2017-03-22 15:49:19 +00:00
config.tests QFileSystemEngine::setFileTime/Unix: remove the fallback to futimesat 2017-08-05 16:41:42 +00:00
dist Remove mention of reverted fix 2017-06-28 11:54:29 +02:00
doc Merge remote-tracking branch 'origin/5.9' into dev 2017-08-31 14:31:31 +02:00
examples Replace Q_NULLPTR with nullptr where possible 2017-09-19 11:53:55 +00:00
lib Purge all fonts 2015-08-18 19:59:14 +00:00
mkspecs Remove obsolete file 2017-09-10 05:39:42 +00:00
qmake Merge remote-tracking branch 'origin/5.9' into dev 2017-08-31 14:31:31 +02:00
src QHostInfo: adapt to glibc 2.26 no longer requiring us to res_init 2017-09-22 04:28:50 +00:00
tests Replace Q_NULLPTR with nullptr where possible 2017-09-19 11:53:55 +00:00
util Replace Q_DECL_OVERRIDE with override where possible 2017-09-19 11:53:42 +00:00
.gitattributes Update the git-archive export options 2012-09-07 15:39:31 +02:00
.gitignore GitIgnore config.status.bat and config.tests/.qmake.stash 2017-06-13 05:58:30 +00:00
.qmake.conf Bump version 2017-09-04 18:07:28 +02:00
.tag Update the git-archive export options 2012-09-07 15:39:31 +02:00
config_help.txt Restore behavior of using libEGL and libGLESv2 as default for angle 2017-05-11 08:35:54 +00:00
configure configure: dispose of which.test 2017-08-02 16:37:32 +00:00
configure.bat configure: balk at any of {{,X}QMAKESPEC,QMAKE{PATH,FEATURES}} being set 2017-04-21 09:22:27 +00:00
configure.json Merge remote-tracking branch 'origin/5.9' into dev 2017-08-02 22:52:32 +02:00
configure.pri Append the QMAKE_EXTRA_ARGS to the output instead of overwriting it 2017-08-25 10:32:32 +00:00
header.BSD Add new license header templates and license files 2016-01-14 20:43:46 +00:00
header.BSD-OLD Add new license header templates and license files 2016-01-14 20:43:46 +00:00
header.COMM Add header template for commercial only modules 2015-10-19 10:37:18 +00:00
header.FDL Add new license header templates and license files 2016-01-14 20:43:46 +00:00
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header.LGPL Add new license header templates and license files 2016-01-14 20:43:46 +00:00
header.LGPL3 Update copyright headers 2015-02-11 06:49:51 +00:00
header.LGPL3-COMM Update copyright headers 2015-02-11 06:49:51 +00:00
header.LGPL21 Update copyright headers 2015-02-11 06:49:51 +00:00
header.LGPL-NOGPL2 Add new license header templates and license files 2016-01-14 20:43:46 +00:00
header.LGPL-ONLY Update copyright headers 2015-02-11 06:49:51 +00:00
INSTALL Doc: Update links in INSTALL file 2015-02-16 09:06:41 +00:00
LGPL_EXCEPTION.txt Update copyright headers 2015-02-11 06:49:51 +00:00
LICENSE.FDL Initial import from the monolithic Qt. 2011-04-27 12:05:43 +02:00
LICENSE.GPL2 Add new license header templates and license files 2016-01-14 20:43:46 +00:00
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LICENSE.GPL3-EXCEPT Add new license header templates and license files 2016-01-14 20:43:46 +00:00
LICENSE.GPLv3 Expand license scope from "Qt GUI Toolkit" to "Qt Toolkit" 2016-06-15 07:02:32 +00:00
LICENSE.LGPL3 Add new license header templates and license files 2016-01-14 20:43:46 +00:00
LICENSE.LGPLv3 Expand license scope from "Qt GUI Toolkit" to "Qt Toolkit" 2016-06-15 07:02:32 +00:00
LICENSE.LGPLv21 Expand license scope from "Qt GUI Toolkit" to "Qt Toolkit" 2016-06-15 07:02:32 +00:00
LICENSE.PREVIEW.COMMERCIAL Add new license header templates and license files 2016-01-14 20:43:46 +00:00
qtbase.pro nuke configure -host-option 2016-12-13 18:55:59 +00:00
sync.profile EDID parser library 2017-05-02 09:11:56 +00:00