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Davide Beatrici e199710d0e QHostInfo: use dlsym() with RTLD_DEFAULT in case libs cannot be loaded 
The current code only tries to load the required functions from
LIBRESOLV_SO (if defined) and resolv, but on FreeBSD they are in libc:
https://www.freebsd.org/cgi/man.cgi?query=res_query&sektion=3&apropos=0&manpath=freebsd

This commit changes the code so that, after failing to load the
non-existent libraries, it attempts to load the functions with dlsym()
using the special handle RTLD_DEFAULT, which searches for the specified
symbol in the loaded libraries.

This is a follow-up to 8eeb5150ed.

Change-Id: I19d90b0ca8703398bf4f5f4edd5ae31e346ef251
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2019-04-06 17:30:27 +00:00
bin syncqt: Do not clean header directory before "-minimal" run 2018-11-22 14:16:53 +00:00
config.tests x86: Disable AVX support on 64-bit MinGW 2019-02-06 08:11:29 +00:00
dist Add changes file for Qt 5.12.2 2019-02-28 07:53:54 +00:00
doc Doc: Remove background colors from simplified offline CSS 2019-03-10 20:00:11 +00:00
examples Examples: properly parse more than one element in maps and lists 2019-03-22 02:08:02 +00:00
lib Purge all fonts 2015-08-18 19:59:14 +00:00
mkspecs Fix cross compile on Ubuntu 2019-03-30 07:34:30 +00:00
qmake qmake: Remove dead code 2019-04-05 07:48:34 +00:00
src QHostInfo: use dlsym() with RTLD_DEFAULT in case libs cannot be loaded 2019-04-06 17:30:27 +00:00
tests Fix various uncommon cases in QTzTimeZonePrivate backend 2019-04-05 20:31:26 +00:00
util Remove broken code from unicode generator 2019-03-18 15:17:10 +00:00
.gitattributes Update the git-archive export options 2012-09-07 15:39:31 +02:00
.gitignore Remove support for qml1 plugins and modules 2018-11-15 19:52:13 +00:00
.qmake.conf Bump version 2019-03-22 05:35:40 +00:00
.tag Update the git-archive export options 2012-09-07 15:39:31 +02:00
config_help.txt configure: improve warning when all qpa plugins disabled with features.gui 2019-01-07 07:27:35 +00:00
configure configure: Treat win32-clang-g++ the same as win32-g++ 2018-10-10 04:10:40 +00:00
configure.bat Configure: simplify logic 2019-03-14 12:13:58 +00:00
configure.json configure: enable inline tests to contain auxiliary files 2018-12-19 19:22:06 +00:00
configure.pri Fix detection of QMAKE_DEFAULT{INC|LIB}DIRS for gcc cross-builds 2019-03-24 07:23:32 +00:00
header.BSD Use placeholder for year in header.* files 2018-04-16 11:02:22 +00:00
header.COMM Use placeholder for year in header.* files 2018-04-16 11:02:22 +00:00
header.FDL Use placeholder for year in header.* files 2018-04-16 11:02:22 +00:00
header.GPL Use placeholder for year in header.* files 2018-04-16 11:02:22 +00:00
header.GPL-EXCEPT Use placeholder for year in header.* files 2018-04-16 11:02:22 +00:00
header.LGPL Use placeholder for year in header.* files 2018-04-16 11:02:22 +00:00
header.LGPL3 Use placeholder for year in header.* files 2018-04-16 11:02:22 +00:00
header.LGPL3-COMM Use placeholder for year in header.* files 2018-04-16 11:02:22 +00:00
header.LGPL-NOGPL2 Use placeholder for year in header.* files 2018-04-16 11:02:22 +00:00
header.LGPL-ONLY Use placeholder for year in header.* files 2018-04-16 11:02:22 +00:00
header.MIT qsimd: add support for new x86 CPU features 2018-05-05 06:20:07 +00:00
INSTALL INSTALL: Remove outdated reference to Windows CE 2019-02-13 13:01:57 +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
LICENSE.GPL3 Add new license header templates and license files 2016-01-14 20:43:46 +00:00
LICENSE.GPL3-EXCEPT Add new license header templates and license files 2016-01-14 20:43:46 +00:00
LICENSE.LGPL3 Add new license header templates and license files 2016-01-14 20:43:46 +00:00
LICENSE.LGPLv3 Remove LICENSE.GPLv3, LICENSE.LGPLv21, LGPL_EXCEPTION.txt 2018-04-16 11:02:14 +00:00
LICENSE.QT-LICENSE-AGREEMENT-4.0 Replace commercial preview license with Qt License Agreement 4.0 2018-06-21 11:39:15 +00:00
qtbase.pro nuke configure -host-option 2016-12-13 18:55:59 +00:00
sync.profile Fix build failed with ANGLE 2018-10-16 05:19:43 +00:00