Index: fish/Makefile.in
===================================================================
--- fish.orig/Makefile.in	2018-01-17 19:57:29.240262993 +0200
+++ fish/Makefile.in	2018-01-17 19:58:55.949777188 +0200
@@ -342,7 +342,7 @@
 #
 # Note that doing `make DESTDIR=/some/path/ test` overrides this assignment.
 #
-test: DESTDIR = $(PWD)/test/root/
+test: DESTDIR = $(CURDIR)/test/root/
 test: prefix = .
 test: test-prep install-force test_low_level test_high_level
 	$v rm -f /tmp/file_truncation_test.txt /tmp/tee_test.txt /tmp/fish_foo.txt
@@ -372,7 +372,7 @@
 	env XDG_DATA_HOME=test/data XDG_CONFIG_HOME=test/home HOME=test/homedir ./fish_tests
 .PHONY: test_low_level
 
-test_high_level: DESTDIR = $(PWD)/test/root/
+test_high_level: DESTDIR = $(CURDIR)/test/root/
 test_high_level: prefix = .
 test_high_level: test-prep install-force test_invocation test_fishscript test_interactive
 .PHONY: test_high_level
