Configuring EMBOSS graphics

The PLPLOT library can produce output to many devices but requires certain libraries that are NOT distributed with EMBOSS

To get X-windows based output you must have X installed, or else PLplot will not build the required driver. You may need to specify the location of your X-windows library with the configuration options:

-x-includes=DIR

(X include files are in DIR)

-x-libraries=DIR

(X library files are in DIR)

To explicitly configure PLPLOT without X-windows, use

-without-x

.

You can explicitly tell EMBOSS to not include PNG support with

-without-pngdriver

.

You can tell if

./configure

has found a suitable PNG library by watching for something like the following when running

./configure

:

checking if png driver is wanted... yes
checking for inflateEnd in -lz... (cached) yes
checking for png_destroy_read_struct in -lpng... (cached) yes
checking for gdImageCreateFromPng in -lgd... (cached) yes

This means that the configuration script has located the PNG libraries on your system. If you see a message indicating that

./configure

could not find the libraries or that the version of

gd

was too old then you should install the latest versions of the libraries yourself and rerun configure with the correct

-with-pngdriver

value.

When you run an EMBOSS graphical application you can see the list of installed graph devices by giving '?' as the response to the 'Graph type' prompt.