--- a/debian/patches/reproducible_build.patch	1970-01-01 02:00:00.000000000 +0200
--- b/debian/patches/reproducible_build.patch	2016-07-04 22:21:11.347622522 +0200
@@ -0,0 +1,15 @@
+--- neat-2.0.orig/Makefile
++++ neat-2.0/Makefile
+@@ -30,7 +30,11 @@ FC=gfortran
+ LD=gfortran
+ PREFIX=/usr
+ VERSION := $(shell git describe --always --tags --dirty)
+-BUILDDATE := "$(shell date)"
++ifdef SOURCE_DATE_EPOCH
++	BUILDDATE := "$(shell date -u -d "@$(SOURCE_DATE_EPOCH)" 2>/dev/null || date -u -r "$(SOURCE_DATE_EPOCH)" 2>/dev/null || date -u)"
++else
++	BUILDDATE := "$(shell date)"
++endif
+ FFLAGS+=-cpp -DPREFIX=\"${PREFIX}\" -DVERSION=\"${VERSION}\" -DBUILDDATE=\"${BUILDDATE}\"
+ LDFLAGS+=
+ MANDIR=${DESTDIR}${PREFIX}/share/man/man1
--- a/debian/patches/series	1970-01-01 02:00:00.000000000 +0200
--- b/debian/patches/series	2016-07-04 22:16:53.285310063 +0200
@@ -0,0 +1 @@
+reproducible_build.patch