tech-pkg: Can't install by 'do-install'

Subject: Can't install by 'do-install'
To: None <tech-pkg@netbsd.org>
From: Ruey-Shyang Guo <rsguo@ms25.hinet.net>
List: tech-pkg
Date: 02/18/1999 16:16:08

I add these lines to my Makefile for installing:
WRKSRC=  ${WRKDIR}/musicbox-1.01
do-install:
        ${INSTALL_PROGRAM} ${WRKSRC}/musicbox ${PREFIX}/bin
But it can't find the correct path for binary.
How to fix it?