--- config.mk.orig	2017-08-26 10:41:22.000000000 -0700
+++ config.mk	2017-08-26 10:44:05.000000000 -0700
@@ -4,7 +4,7 @@
 # Customize below to fit your system
 
 # paths
-PREFIX = /usr/local
+PREFIX = @@MACPORTS_PREFIX@@
 MANPREFIX = ${PREFIX}/share/man
 LIBPREFIX = ${PREFIX}/lib/surf
 
@@ -15,8 +15,8 @@
 GTKLIB = `pkg-config --libs gtk+-3.0 webkit2gtk-4.0`
 
 # includes and libs
-INCS = -I. -I/usr/include -I${X11INC} ${GTKINC}
-LIBS = -L/usr/lib -lc -L${X11LIB} -lX11 ${GTKLIB} -lgthread-2.0
+INCS = -I. -I@@MACPORTS_PREFIX@@/include -I${X11INC} ${GTKINC}
+LIBS = -L@@MACPORTS_PREFIX@@/lib -lc -L${X11LIB} -lX11 ${GTKLIB} -lgthread-2.0
 
 # flags
 CPPFLAGS = -DVERSION=\"${VERSION}\" -DWEBEXTDIR=\"${LIBPREFIX}\" -D_DEFAULT_SOURCE