pass prefix variables to makefiles via debian rules

Author: ka9q

Makefile

@@ -14,6 +14,10 @@ pkgdatadir    ?= $(datadir)/ka9q-radio
 pkglibdir     ?= $(libdir)/ka9q-radio
 statedir      ?= $(localstatedir)/lib/ka9q-radio
 mandir	      ?= $(prefix)/share/man
+
+export prefix exec_prefix bindir sbindir libdir datadir sysconfdir
+export localstatedir pkgdatadir pkglibdir statedir mandir
+
 PKG_CONFIG_PATH=
 LD_LIBRARY_PATH=
 

debian/rules

@@ -40,7 +40,7 @@ PLUGIN_FLAGS = \
 override_dh_auto_build:
 	@echo "MAKEFLAGS=$(MAKEFLAGS)"
 	@echo "DEB_BUILD_OPTIONS=$(DEB_BUILD_OPTIONS)"
-	$(MAKE) -j$(shell nproc) $(PLUGIN_FLAGS)
+	$(MAKE) -j$(shell nproc) $(PLUGIN_FLAGS) prefix=/usr systemdunitdir=/usr/lib/systemd/system
 
 #override_dh_auto_build:
 #	dh_auto_build -- $(PLUGIN_FLAGS)