debian/changelog

+libzstd (1.3.4+dfsg-3) UNRELEASED; urgency=medium
+
+  * Update d/rules, use dh_auto_build instead of make to avoid cross build
+    failures. Thanks to Helmut Grohne for the patch. Closes: 895925
+
+ -- Alexandre Mestiashvili <mestia@debian.org>  Tue, 17 Apr 2018 17:06:15 +0200
+
 libzstd (1.3.4+dfsg-2) unstable; urgency=medium
 
   * Team upload.
   
   [ Adam Borowski ]
-  * Enable build on riscv64 
+  * Enable build on riscv64
     Closes: #895259
 
  -- Andreas Tille <tille@debian.org>  Mon, 09 Apr 2018 08:21:45 +0200

debian/rules

@@ -18,7 +18,7 @@ endif
 
 override_dh_auto_build:
 	dh_auto_build
-	$(MAKE) -C contrib/pzstd/ pzstd
+	dh_auto_build --sourcedirectory=contrib/pzstd/ -- pzstd
 
 override_dh_install:
 	# Call d-shlibmove to comply with library packaging guide