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Re: [Discuss-gnuradio] gr-qtgui configuring?
From: |
Eric Blossom |
Subject: |
Re: [Discuss-gnuradio] gr-qtgui configuring? |
Date: |
Sat, 5 May 2007 20:18:55 -0700 |
User-agent: |
Mutt/1.5.9i |
On Sat, May 05, 2007 at 10:25:38PM -0400, Michael Dickens wrote:
> My bad ... RTF Readme file that goes along with gr-qtgui! Requires
> qwt >= 5.0.0 ! Ububtu Edgy can install QWT 4.2, but no greater ... doh!
>
> Can we check for this in the m4 file somehow (the QT version is
> already checked for, so why not also QWT?)?
>
> QWT version is found in the file qwt_global.h, under the name
> QWT_VERSION. Looks like there's no pkgconfig file for qwt installed
> by default, but there is one at <http://n4hy.org/Qwt/qwt.pc> that
> could be copied in separately. If we want to require the
> installation of 'qwt.pc', then something can be added to the
> "grc_gr_qtgui.m4" script along the lines of:
>
> PKG_CHECK_MODULES(QWT, qwt >= 5.0.0,[],
> [passed=no;AC_MSG_RESULT([gr-qtgui requires libqwt >= 5.0.0.])])
>
> If not using 'qwt.pc', then I'd suggest adding to the "gr_qwt.m4"
> script something along the lines of:
>
> AC_TRY_LINK([#include <qwt_global.h>],
> [#if QWT_VERSION < 0x050000 foo #endif],
> [],
> [libqwt_ok=no;AC_MSG_RESULT([QWT library version
> must be at least 5.0.0])]
> )
>
> Or maybe trying both (along the lines of first searching for libqt,
> then libqt-mt) ... with the PKG_CHECK first trying as written, then a
> backup to trying the "gr_qwt.m4" with the addition above. I don't
> have time to try these out tonight, but can do so tomorrow or Monday
> unless someone else wants to. - MLD
Unless the upstream guys produce and ship the .pc file I don't want to
check for it with pkgconfig. The second seems OK.
Eric