Description: Use CURDIR instead of PWD
 PWD might or might not be defined in the environment,
 CURDIR is defined by make.
Author: Adrian Bunk <bunk@debian.org>
Bug-Debian: https://bugs.debian.org/956814

--- sprai-0.9.9.23+dfsg.orig/makefile
+++ sprai-0.9.9.23+dfsg/makefile
@@ -1,7 +1,7 @@
 APPNAME = 'sprai'
 VERSION = '0.9.9.23'
 
-PREFIX=$(PWD)/debian/sprai/usr
+PREFIX=$(CURDIR)/debian/sprai/usr
 COMPILED= \
 bfmt72s \
 nss2v_v3 \