diff -Nru digitemp-3.7.1/debian/changelog digitemp-3.7.1/debian/changelog
--- digitemp-3.7.1/debian/changelog	2015-12-12 23:08:23.000000000 +0000
+++ digitemp-3.7.1/debian/changelog	2015-12-13 07:18:16.000000000 +0000
@@ -1,3 +1,12 @@
+digitemp (3.7.1-2) unstable; urgency=medium
+
+  * [REGRESSION] Re-add VPATH-based compilation via build-serial and
+    build-usb to allow digitemp_DS2490 to work correctly.  This method
+    was removed in 3.7.1-1 but is still needed.  Description of problem
+    can be found at https://bugzilla.redhat.com/show_bug.cgi?id=517284
+
+ -- Ryan Finnie <ryan@finnie.org>  Sun, 13 Dec 2015 07:13:07 +0000
+
 digitemp (3.7.1-1) unstable; urgency=medium
 
   * New upstream release
diff -Nru digitemp-3.7.1/debian/rules digitemp-3.7.1/debian/rules
--- digitemp-3.7.1/debian/rules	2015-12-12 23:00:01.000000000 +0000
+++ digitemp-3.7.1/debian/rules	2015-12-13 07:12:58.000000000 +0000
@@ -8,13 +8,17 @@
 	dh $@
 
 override_dh_auto_build:
-	$(MAKE) ds9097 ds9097u ds2490
+	mkdir -p build-serial/src build-serial/userial/ds9097 build-serial/userial/ds9097u
+	$(MAKE) -C build-serial -f ../Makefile SRCDIR=.. ds9097 ds9097u
+
+	mkdir -p build-usb/src build-usb/userial/ds2490
+	$(MAKE) -C build-usb    -f ../Makefile SRCDIR=.. ds2490
 
 override_dh_auto_install:
 	install -m 0755 -d debian/digitemp/usr/bin
-	install -m 0755 digitemp_DS9097 debian/digitemp/usr/bin
-	install -m 0755 digitemp_DS9097U debian/digitemp/usr/bin
-	install -m 0755 digitemp_DS2490 debian/digitemp/usr/bin
+	install -m 0755 build-serial/digitemp_DS9097 debian/digitemp/usr/bin
+	install -m 0755 build-serial/digitemp_DS9097U debian/digitemp/usr/bin
+	install -m 0755 build-usb/digitemp_DS2490 debian/digitemp/usr/bin
 
 override_dh_installman:
 	dh_installman digitemp.1
@@ -23,6 +27,7 @@
 	dh_link usr/share/man/man1/digitemp.1.gz usr/share/man/man1/digitemp_DS2490.1.gz
 
 override_dh_auto_clean:
+	rm -rf build-serial
+	rm -rf build-usb
 	$(MAKE) clean
-	$(RM) digitemp_DS9097 digitemp_DS9097U digitemp_DS2490
 	dh_clean