I've become enamoured with redshift on linux, and want it on my freebsd workstation. As an introduction, blue light is known to suppress melatonin output. To get a good nights sleep, your body needs to start producing some melatonin after nightfall so that you can feel tired etc. If you are an insomniac or just have trouble sleeping, this is worth a try. You can do this by using yellow tinted bug lights after dark, and configuring your GUI to output less blue as evening progresses. Redshift is an app that reduces the color temperature of x11 output after nightfall, according to your longitude and latitude. I've downloaded the source for 1.5, and done a # ./configure; make; make install However, the make install appears to hang after the following: Code: sed -e "s|\@bindir\@|/usr/local/bin|g" -e "s|\@localdir\@|/usr/local/share/locale|g" > defs.py At that point, we CTRL-C out of it, and see Code: ^C*** defs.py removed However, at this stage the gtk-redshift is not built, but redshift is. So we can still use the command line executable. It is in /path/to/redshift-1.5/src. So we can manually put it in the right place: # cp /path/to/redshift-1.5/src/redshift /usr/local/bin From there we can make a custom launcher in the gnome panel, put it in the startup applications, or whatever. However, I'd be curious to see if anyone else can get it to fully compile.