--- a/debian/patches/reproducible-build.patch	1970-01-01 01:00:00.000000000 +0100
--- b/debian/patches/reproducible-build.patch	2020-07-24 11:45:11.440551173 +0100
@@ -0,0 +1,15 @@
+Description: Make the build reproducible
+Author: Chris Lamb <lamby@debian.org>
+Last-Update: 2020-07-24
+
+--- jskeus-1.2.4+dfsg.orig/irteus/Makefile
++++ jskeus-1.2.4+dfsg/irteus/Makefile
+@@ -177,7 +177,7 @@ MKDIR:
+ 
+ .PHONY: defun.h
+ defun.h:
+-	echo '#include "eus.h"\n#undef defun\npointer TEST();\nvoid test(void) {register context *ctx; pointer mod; defun(ctx,"TEST",mod,TEST,NULL);}' > test.c
++	printf '#include "eus.h"\n#undef defun\npointer TEST();\nvoid test(void) {register context *ctx; pointer mod; defun(ctx,"TEST",mod,TEST,NULL);}\n' > test.c
+ 	echo "// redefine defun for update defun() API () https://github.com/euslisp/EusLisp/pull/116" > defun.h
+ 	echo "#undef defun" >> defun.h
+ 	$(CC) $(CFLAGS) $(WFLAGS) -c test.c $(OBJOPT) test.o || echo "#define defun(a, b, c, d, e) defun(a, b, c, d) // for EusLisp < 9.24" >> defun.h
--- a/debian/patches/series	2020-07-24 11:29:15.620084291 +0100
--- b/debian/patches/series	2020-07-24 11:45:10.440537576 +0100
@@ -2,3 +2,4 @@
 makefile-for-debian.patch
 fix-make-clean.patch
 
+reproducible-build.patch