#209 PNG terminal is not available, why?

[foice]

Hello
I have installed 5.0.3 from the sources and terminal=dumb works fine. However all the graphics files terminals seem absent, in particular PNG.

Did I miss any configuire option or what? I understand from the help that by default PNG (via cairo?) should be there. I am not sure, however, if I have cairo or no.

Thanks for your suggestiosn,
Rob

gnuplot-5.0.3>gnuplot

    G N U P L O T
    Version 5.0 patchlevel 3    last modified 2016-02-21

    Copyright (C) 1986-1993, 1998, 2004, 2007-2016
    Thomas Williams, Colin Kelley and many others

    gnuplot home:     http://www.gnuplot.info
    faq, bugs, etc:   type "help FAQ"
    immediate help:   type "help"  (plot window: hit 'h')

Terminal type set to 'unknown'
gnuplot> set terminal png
Terminal type set to 'unknown'
^
unknown or ambiguous terminal type; type just 'set terminal' for a list

gnuplot> set terminal

Available terminal types:
canvas HTML Canvas object
cgm Computer Graphics Metafile
context ConTeXt with MetaFun (for PDF documents)
corel EPS format for CorelDRAW
dumb ascii art for anything that prints text
dxf dxf-file for AutoCad (default size 120x80)
eepic EEPIC -- extended LaTeX picture environment
emf Enhanced Metafile format
emtex LaTeX picture environment with emTeX specials
epslatex LaTeX picture environment using graphicx package
fig FIG graphics language for XFIG graphics editor
hpgl HP7475 and relatives [number of pens] [eject]
latex LaTeX picture environment
mf Metafont plotting standard
mp MetaPost plotting standard
pcl5 HP Designjet 750C, HP Laserjet III/IV, etc. (many options)
postscript PostScript graphics, including EPSF embedded files (*.eps)
pslatex LaTeX picture environment with PostScript \specials
pstex plain TeX with PostScript \specials
pstricks LaTeX picture environment with PSTricks macros
qms QMS/QUIC Laser printer (also Talaris 1200 and others)
Press return for more:
svg W3C Scalable Vector Graphics
tek40xx Tektronix 4010 and others; most TEK emulators
tek410x Tektronix 4106, 4107, 4109 and 420X terminals
texdraw LaTeX texdraw environment
tgif TGIF X11 [mode] [x,y] [dashed] ["font" [fontsize]]
tkcanvas Tk canvas widget
tpic TPIC -- LaTeX picture environment with tpic \specials
unknown Unknown terminal type - not a plotting device
vttek VT-like tek40xx terminal emulator
x11 X11 Window System
xlib X11 Window System (gnulib_x11 dump)
xterm Xterm Tektronix 4014 Mode

[Hans-Bernhard Broeker]

What you missed is about a metric ton of warning messages from 'configure' about things it did not find, including all the libraries needed to support those output formats you're now missing.

[foice]

Thanks for pointing it out. Installing the missing libs flagged by configure it works ok now.

I have to say that configure is quite obscure in telling you something is missing, I mean if I give --with-cairo and cairo is missing it should probably fail or do something more visible. Maybe just my un-expert opinion ...