On Wed, 20 Apr 2016 09:31:37 +0200, Gerhard Kugler wrote: >if I call urlview within mutt, I get: >"urlview: error while loading shared libraries: libncursesw.so.5: >cannot open shared object file: No such file or directory" > >ncurses is existing here of course You are using a package from AUR!!! https://aur.archlinux.org/packages/urlview/ You likely upgraded packages from official repositories. $ pacman -Si ncurses | grep Provides Provides : libncurses++w.so=6-64 libformw.so=6-64 libmenuw.so=6-64 libpanelw.so=6-64 libncursesw.so=6-64 $ pacman -Ql ncurses | grep libncursesw.so. ncurses /usr/lib/libncursesw.so.6 ncurses /usr/lib/libncursesw.so.6.0 >Where can I find aclocal? http://lmgtfy.com/?q=arch+linux+aclocal Regards, Ralf