Re: Link fails on Ubuntu 16.04 (on WSL) due to undefined reference to symbol 'FcUcs4ToUtf8'

[Tatsuro M. <tma...@ya...>]

I have tested native Ubunutu16.04 with or without your this time fix(3d5154)

The results are the same as those on Ubuntu 16.04 on WSL.

The fix (3d5154) is really needed for Ubuntu 16.04. (I don't know for 17.10) 

> But also I do not understand for a second reason.
> As you say, libfontconfig is already used by various support libraries
> that gnuplot already uses  (cairo pango-ft gdlib qt ...).
> So it must surely be linked in already because of the library dependencies
> for various terminals.  I wonder that is not true on your machine.
> 
> When I run ./configure it adds -lfontconfig to both TERM_LIBS
> and GTK_LIBS.  Does this not happen on your setup?

sudo apt build-dep gnuplot5
does not enable GTK_LIBS.
(config.log says GTK_LIBS is empty)

And thus this time fault might occur.
In the case of cygwin, I need install GTK_LIB I can build without commit 3d5154.
So problem seems to be ubuntu (at least 16.04) specific.

Tatsuro