The build procedure for Pine is somewhat unusual, in that options usually passed as ./configure options or housed in $CFLAGS must all be passed on the command line to the ./build script. ./build sl5 Pine offers quite a few target platforms, slx specifies Linux using -lcrypt to get the crypt function. See the doc/pine-ports file for more information and other authentication options. DEBUG='-Os ' Optimize binaries for size. MAILSPOOL='/var/mail' Location of mail spool files, /var/mail. cd bin && install pine /usr/bin This is all that is required to install Pine, all other executables may be installed in the same manner.