Misc updates

dat/ncdc/install.md

@@ -81,7 +81,21 @@ Ncdc is available in the Portage tree, so installation is trivial:
 
 ## Mac OS X
 
-Ncdc is available in [Homebrew](http://braumeister.org/formula/ncdc).
+Ncdc is available in [Homebrew](https://formulae.brew.sh/formula/ncdc).
+
+## OpenBSD
+
+Compile & install from source:
+
+    doas pkg_add -i glib2
+    ftp https://dev.yorhel.nl/download/ncdc-1.22.1.tar.gz
+    tar zxvf ncdc-1.22.1.tar.gz
+    cd ncdc-1.22.1
+    ./configure NCURSES_CFLAGS="-lncurses" NCURSES_LIBS="-lncursesw"\
+        CPPFLAGS="-I/usr/include -I/usr/local/include"\
+        LDFLAGS="-L/usr/lib -L/usr/local/lib"
+    make
+    doas make install
 
 ## OpenIndiana