--- ../cache/pianobar-2018.06.22/Makefile	2018-06-22 14:57:26.000000000 +0800
+++ ./Makefile	2018-08-15 19:56:31.529627505 +0800
@@ -1,7 +1,7 @@
 # makefile of pianobar
 
 PKG_CONFIG?=pkg-config
-PREFIX:=/usr/local
+PREFIX?=/usr/local
 BINDIR:=${PREFIX}/bin
 LIBDIR:=${PREFIX}/lib
 INCDIR:=${PREFIX}/include