This implements a basic support for OpenEXR on gThumb, the GNOME image viewer.

An AUR is available here: https://aur.archlinux.org/packages/gthumb-openexr-extension/

If using yaourt, you can install it with (after sync):

yaourt -Sy
yaourt -S gthumb-openexr-extension

Finally, see the 'Usage' section for activating and using the extension.

A ppa is available here: https://launchpad.net/~alban-f/+archive/ubuntu/gthumb-openexr-extension

You need to add it to your repositories:

sudo add-apt-repository ppa:alban-f/gthumb-openexr-extension
sudo apt-get update

Then, install the extension:

sudo apt install gthumb-openexr-extension

Finally, see the 'Usage' section for activating and using the extension.

To use the extension, you need to activate it in gThumb. Go to the top left menu, then to Preferences.

Open the Extensions tab.

Then activate OpenEXR format support.

After restarting gThumb, you should be able to display OpenEXR images.

You need to install these dependencies to compile and install the extension:

• gthumb
• gthumb-dev
• gnome-common
• libglib2.0-dev
• build-essential
• gnome-doc-utils
• libgtk-3-dev
• libgconf2-dev
• libopenexr-dev

sudo apt install gthumb gthumb-dev gnome-common libglib2.0-dev build-essential gnome-doc-utils libgtk-3-dev libgconf2-dev libopenexr-dev

In order to compile and install the extension, do:

./autogen.sh --prefix=/usr
make
sudo make install