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[Octave-bug-tracker] [bug #37101] GUI build fails on Fedora or RHEL with

From: Mike Miller
Subject: [Octave-bug-tracker] [bug #37101] GUI build fails on Fedora or RHEL with qt3-devel installed
Date: Wed, 15 Aug 2012 15:57:36 +0000
User-agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.1 (KHTML, like Gecko) Chrome/21.0.1180.79 Safari/537.1

Update of bug #37101 (project octave):

                 Summary: GUI build fails on FC 17 x86_64 => GUI build fails
on Fedora or RHEL with qt3-devel installed


Follow-up Comment #2:

The problem was the presence of qmake from Qt version 3 in the PATH, which
configure found and used before qmake-qt4.

Fedora and RHEL systems install Qt4 qmake as /usr/bin/qmake-qt4. Qt3 can be
co-installed, and its qmake executable is just qmake.

For now,

yum erase qt3-devel

is a workaround for this problem.

Validating the output of qmake should be enough to tell it's a version we can
work with, here are some examples on a Fedora 17 64-bit:

address@hidden ~]$ qmake-qt4 -query QT_INSTALL_HEADERS
address@hidden ~]$ qmake -query QT_INSTALL_HEADERS
address@hidden ~]$ qmake-qt4 -query QT_INSTALL_LIBS
address@hidden ~]$ qmake -query QT_INSTALL_LIBS

If no valid paths are found from qmake, configure should keep searching for
qmake candidates in PATH.


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