Re: Font problem in 2-lines titles with cairo terminals

For wxt terminal, something may be wrong for your intall of libwxgtk for build gnuplot.

In build directory, configure log file "config.log" exist,
open config.log, and search keyword "wx-config" and what is reported.
Please report here.

For qt terminal, qt libraries should be installed.
Note that hey must be massive libraries.

I recomend qt5 because qt4 is obsolate.
The below is the cygwin's build depends for qt5 library
libQt5Core-devel, libQt5Gui-devel, libQt5Svg-devel,
perhaps similar libs are required for the Debian.

Tatsuro



> ----- Original Message -----
> 
> From: "hchiPer" <[email protected]>
> To: "Peter Rockett" <[email protected]>
> Cc: "[email protected]" <[email protected]>
> Date: 2022/02/18 金 04:48
> Subject: Re: [Gnuplot-info] Font problem in 2-lines titles with cairo terminals
> 
> 
> Thanks a lot Peter.
> 
> In a virtual machine with the same distro (but 32 bits instead of 64) I 
> have installed successfully (sudo apt install ...):
> - libwxtgtk3.0-gtk3-dev
> - libpango1.0-dev
> - libreadline-dev
> - libgd-dev
> 
> I compiled gnuplot (./configure ans make). And the cairo terminals were 
> available. I never thought I could make it! The "ampersand problem" is 
> solved with gnuplot 5.4.3 :)
> 
> One thing is that wxt (and qt) terminals are not available. I also often 
> use wxt (and sometimes qt). In ./configure summary I read this:
> 
> - wxt terminal: no (requires c++, wxWidgets>2.6, cairo>0.9, pango>1.22)
> - Qt terminal: no (use --with-qt or --with_qt=qt4)
> 
> cairo and pango are not the problem since they were required for the 
> cairo terminals, which work fine.
> 
> For wxt, it seems I need to install c++ but I don't know exactly which 
> package (apt list give a lot of possibilities) and libwxgtk3.0-gtk3-dev 
> might be a wronk package...?
> 
> For qt, I tried ./configure --with-qt and ./configure --with-qt=qt4, but 
> the same warning is still there.
> 
> Anyway I am very happy (and proud) to have been able to compile gnuplot 
> successfully, thanks to your help.
> 
> 
> 
> 
> Le 17/02/22 à 09:48, Peter Rockett a écrit :
> >
> > The wxgtk-3.0 and readline8 versions will probably work. They are just 
> > later versions and unlikely to break things.
> >
> > You will need to install the *-dev variants of the libraries to build 
> > anything. ('dev' for developer.) They provide the necessary header 
> > files without which you will get "header files do not exist" errors.
> >
> > P.
> >
> >
> > On 17/02/2022 07:51, hchiPer wrote:
> >>
> >> Thanks for your reply.
> >>
> >> libwxgtk2.8-dev:
> >> only libwxgtk3.0-gtk3-devavailable and libwxgtk3.0-gtk3-0v5already 
> >> installed
> >>
> >> libpango1.0-dev:
> >> libpango1.0-devavailable and libpango-1.0-0already installed
> >>
> >> libreadline5-dev:
> >> libreadline-dev(8.1-1) available and libreadline8already installed
> >>
> >> I'll try this and Tatsuro's advices on a virtual machine first (as I 
> >> wrote, I'm not an long time linux user and I fear to make something 
> >> wrong that might corrupt my system).
> >>
> >> Once again, thanks a lot for your help. Step by step I'm going deeper 
> >> in linux knowledge.
> >>
> >>
> >>
> >> Le 16/02/22 à 10:09, Peter Rockett a écrit :
> >>> On 15/02/2022 22:02, hchiPer wrote:
> >>>> The distro I have installed is  Q4OS 4.7 (www.q4os.org). I began 
> >>>> using it because it was said to require few resources and to run 
> >>>> smoothly on rather old machines (mine is more than 10 years old).
> >>>>
> >>>> I installed gnuplot 5.4.2 on another computer under Win10, and the 
> >>>> font problem doesn't happen.
> >>>>
> >>>> I suspect the cause of the problem is in the cairo or pango 
> >>>> library, but I am not sure.
> >>>>
> >>>> I was indeed able to compile 5.4.3, but without the terminals I use 
> >>>> to use (wxt, pngcairo, pdfcairo), it is not very useful.
> >>>
> >>> On Debian (and derivatives) you need to install libwxgtk2.8-dev (for 
> >>> the wxt terminal), libpango1.0-dev (for the cairo terminals) and 
> >>> libreadline5-dev (readline support (editing command lines). Follow 
> >>> the configure/make steps below and you should have wxt and the two 
> >>> cairo terminals. Carefully inspect the final lines of the build 
> >>> output since this tells you what has and has not been included; if 
> >>> anything you need is missing you will need to hunt down the 
> >>> necessary dependency.
> >>>
> >>> Peter
> >>>
> >>>
> >>>>
> >>>> Thanks anyway for all your help :)
> >>>>
> >>>>
> >>>> Le 15/02/22 à 20:47, Norwid Behrnd a écrit :
> >>>>> On Tue, 15 Feb 2022 19:54:56 +0100
> >>>>> hchiPer<[email protected]> wrote:
> >>>>>
> >>>>>> It seems 5.4.3 brings the solution, but I'm unable to find a .deb
> >>>>>> package. And unluckily I'm not able to compile myself.
> >>>>> Perhaps I missed it, but what is the Linux «based on Debian 11» you
> >>>>> use?  Is it one of the ubuntu family, like Xubuntu?  Is it Linux 
> >>>>> Mint'
> >>>>> /Mint/, or the LDME 4 closer to Debian than Mint's Mint? Perhaps
> >>>>> something specific to your distribution contributes to the problems
> >>>>> you report which might be beyond reach of Gnuplot.
> >>>>>
> >>>>> Curiosity aside, I just fetched Gnuplot (Version 5.4 patchlevel 3,
> >>>>> last modified 2021-12-24) from sourceforge, decompressed the tar.gz
> >>>>> (4.5 Mo).  The INSTALL file (no file extension) describes well what
> >>>>> has to be done to perform the installation, which starts by entering
> >>>>> the decompressed archive from the terminal.  Then run from the
> >>>>> terminal `./configure`, followed by `make`, and `make check`. For
> >>>>> the then following installation /per se/, you possibly need elevated
> >>>>> administrator privileges, i.e., `sudo make install`. True, you have
> >>>>> to request `synaptic` once to get GNU Make (e.g., GNU Make 4.3 by
> >>>>> 2020) to run the make command.  In my case, it overwrites synaptic's
> >>>>> earlier installation of Gnuplot 5.4 patchlevel 2 from Debian's
> >>>>> repositories.
> >>>>>
> >>>>> Caveat: The installation based on the sourceforge archive does not
> >>>>> offer you access to wxterm, pngcairo, epscairo, or pdfcairo terminal.
> >>>>> Yet have the postscript terminal instead to generate a .eps with the
> >>>>> two-line plot title with escaped ampersand and both lines in serif
> >>>>> fonts greater than usually seen (by appearance /likely/ a different
> >>>>> serif font than the by Bistream Vera).
> >>>>
> >>>>
> >>>> _______________________________________________
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> >>>
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