vonsh specifies `$(MAKE) debug` for building the package and hence does not pass the relevant cross
compiler to the Makefile.

It is rather easier to just use dh_auto_build which takes care of this and also use buildsystem as
makefile as an enhancement.

Please consider to apply the patch pasted below.


diff --git a/debian/rules b/debian/rules
index 2efd498..5c80992 100755
--- a/debian/rules
+++ b/debian/rules
@@ -12,10 +12,10 @@ export VERSION_STR=$(DEB_VERSION)
 export STRIP=true

 %:
-	dh $@
+	dh $@ --buildsystem=makefile

 override_dh_auto_build:
-	$(MAKE) debug
+	dh_auto_build -- debug

 override_dh_builddeb:
 	dh_builddeb -- -Zxz