The qt package is 4.8.7 while the qt5 package is 5.5.1. I'd like to be able to build against Qt 5.x from qt creator, but it seems like it only looks for qt in /bin and not qt5. The installer from qt.io seems to handle patching things up ok, but I'd rather use the package from the repo. Suggestions?

And what qtcreator do you have installed? This post is very unclear....

The repo version can't use Qt 4 at all.

pacman -Qi qtcreator

If you mean the settings for the needed qmake, set the path to /usr/lib/qt5/bin/qmake

My apologies, I should provide much more detail. In previous setups I had relied on using the Qt installer from qt.io which did a fairly good job of automatically detecting whichever version of Qt that it had installed along side of qtcreator and configuring the IDE to use the latest installed. With the repo version, when opening qtcreator, selecting Tools->Options->Build&Run->Qt Versions, none are auto-detected. However, upon first run a manual entry is already populated which is Qt 4.8.7 from /usr/bin/qmake. Adding another manual entry of /usr/bin/qmake-qt5 and editing the Kits to point to this fixed me up. My laziness got the better of me.

pacman -Qi qtcreator

reports

Name : qtcreator

Version : 3.6.0-2

Description : Lightweight, cross-platform integrated development environment.

Architecture : x86_64

URL : http://qt.digia.com/

Licenses : LGPL

Groups : programming

Provides : None

Depends On : qt5-tools qt5-quick1

Optional Deps : qt5-docs: for the integrated Qt documentation

qt5-webkit-examples: to work with webkit examples [installed]

gdb: for the debugger [installed]

cmake: for cmake project suppport [installed]

git: for git support [installed]

mercurial: for mercurial support [installed]

bzr: for bazaar support [installed]

Required By : None

Optional For : None

Conflicts With : None

Replaces : None

Installed Size : 77.72 MiB

Packager : Anke Boersma <demm@kaosx.us>

Build Date : Fri 08 Jan 2016 11:34:28 PM EST

Install Date : Mon 01 Feb 2016 11:18:09 PM EST

Install Reason : Explicitly installed

Install Script : No

Validated By : SHA256 Sum