For most *nix systems, all that should be required is:
lfhex uses "qmake" for builds. The following commands should work for most *nix systems.
% cd src % qmake % make % make install
lfhex supports basic X11 command line options supported through Qt's
QApplication class. Here are some options I find useful:
-fg
Set foreground color.
-bg
Set background color.
A full list of supported X11 options can be found in the Qt documentation
for the QApplication class.
The command line option "-c" is used to start lfhex in "compare" mode.
Summary
Tonality is a GUI-driven utility that streamlines the typical B&W image conversion process. It thumbnails images in B&W for quick preview. It allows previews based on individual color channels. It also makes adjusting individual channel contributions without changing the overall exposure easy.