gnuplot-beta

compiling Qt on Mac

[Mojca M. <moj...@gm...>]

Hello,

I wanted to test Qt compilation, but I cannot even start it. The
configure scripts asks for lrelease-qt4, but the name of binary on mac
seems to be lrelease-4.7 (it probably depends on version).

On top of that it complains about

No package 'QtCore' found
No package 'QtGui' found
No package 'QtNetwork' found
No package 'QtSvg' found

However I have
    /Library/Frameworks/QtCore.framework
and others present and I'm able to compile and use other Qt applications.

Mojca

Re: compiling Qt on Mac

[Ethan A M. <sf...@us...>]

On Friday, May 27, 2011 12:20:26 am Mojca Miklavec wrote:
> Hello,
> 
> I wanted to test Qt compilation, but I cannot even start it.

The configure script is assuming that a pkg-config files exists to 
describe the local installation of Qt.  I think we've been through 
this before that OSX does not [typically] use pkg-config.  So you
may have to modify the autoconf scripts to deal with the OSX way 
of doing things.  Here's a start:

> configure scripts asks for lrelease-qt4, but the name of binary on mac
> seems to be lrelease-4.7 (it probably depends on version).

Modify the following line
configure.in:1189:AC_CHECK_PROGS(LRELEASE, lrelease-qt4 lrelease, no)

> On top of that it complains about
> 
> No package 'QtCore' found
> No package 'QtGui' found
> No package 'QtNetwork' found
> No package 'QtSvg' found

Those would have been picked up in the pkgconfig files, I think.
But on OSX they may well be defined in a system header that needs to
be included.  The linux libqt4 distribution includes header files for
a surprising number of other systems. I see, for example:
/usr/lib/qt4/mkspecs/common/mac-g++.conf
/usr/lib/qt4/mkspecs/common/mac-llvm.conf
/usr/lib/qt4/mkspecs/common/mac.conf
/usr/lib/qt4/mkspecs/cygwin-g++
/usr/lib/qt4/mkspecs/cygwin-g++/qmake.conf
/usr/lib/qt4/mkspecs/cygwin-g++/qplatformdefs.h
/usr/lib/qt4/mkspecs/darwin-g++
/usr/lib/qt4/mkspecs/darwin-g++/qmake.conf
/usr/lib/qt4/mkspecs/darwin-g++/qplatformdefs.h
/usr/lib/qt4/mkspecs/macx-xcode
/usr/lib/qt4/mkspecs/macx-xcode/Info.plist.app
/usr/lib/qt4/mkspecs/macx-xcode/Info.plist.lib
/usr/lib/qt4/mkspecs/macx-xcode/qmake.conf
/usr/lib/qt4/mkspecs/macx-xcode/qplatformdefs.h
/usr/lib/qt4/mkspecs/macx-xlc
/usr/lib/qt4/mkspecs/macx-xlc/qmake.conf
/usr/lib/qt4/mkspecs/macx-xlc/qplatformdefs.h

It seems likely that among those (and many more I didn't list) are
the definitions and configuration information you need.

> However I have
>     /Library/Frameworks/QtCore.framework
> and others present and I'm able to compile and use other Qt applications.

Aha. Sounds promising.
Can you see how the Make files for those other Qt applications
refer to Qt, and borrow equivalent commands for gnuplot's configure script?

Re: compiling Qt on Mac

[Mojca M. <moj...@gm...>]

On Fri, May 27, 2011 at 18:31, Ethan A Merritt wrote:
>
>> However I have
>>     /Library/Frameworks/QtCore.framework
>> and others present and I'm able to compile and use other Qt applications.
>
> Aha. Sounds promising.
> Can you see how the Make files for those other Qt applications
> refer to Qt, and borrow equivalent commands for gnuplot's configure script?

I just checked the source code of Geant4
(http://geant4.cern.ch/support/download.shtml). The configure script
includes 500 lines of code devoted to Qt only.

At the end it sets the following variables (which are later used as
flags to compiler):

QTFLAGS=-I/Library/Frameworks/QtCore.framework/Headers
-I/Library/Frameworks/QtGui.framework/Headers
-I/Library/Frameworks/QtOpenGl.framework/Headers
QTLIBS=-F/Library/Frameworks -framework QtCore -framework QtGui

I now commented out a few lines in gnuplot's configure script and ran

export QT_CFLAGS="-I/Library/Frameworks/QtCore.framework/Headers
-I/Library/Frameworks/QtGui.framework/Headers
-I/Library/Frameworks/QtNetwork.framework/Headers
-I/Library/Frameworks/QtSvg.framework/Headers"
export QT_LIBS="-F/Library/Frameworks -framework QtCore -framework
QtGui -framework QtNetwork -framework QtSvg"

./configure --enable-qt

which ended up building gnuplot, but complaining about
qtterminal/QtGnuplotWidget.cpp:280:34: error: ui_QtGnuplotSettings.h:
No such file or directory

which seems to be a valid complaint. I cannot find such file in
gnuplot sources either.

Mojca