Fix makefile fuction

Makefile

@@ -3,10 +3,10 @@ VERSION = $(shell git describe | sed 's/-/./g')
 BRANCH = $(shell git branch --show-current)
 
 define rpm_eval
-shell rpm --eval '%{$(1)}'
+	rpm --eval '%{$(1)}'
 endef
 
-TARBALL_PATH = $(call rpm_eval _sourcedir)/$(NAME)-$(VERSION).tar.gz
+TARBALL_PATH = $(call rpm_eval,_sourcedir)/$(NAME)-$(VERSION).tar.gz
 
 .PHONY: name
 name:
@@ -28,7 +28,7 @@ tarball: $(TARBALL_PATH)
 
 .PHONY: install
 install:
-	install --directory $(DESTDIR)$(call rpm_eval _sysconfdir)/netoik-rp
-	install --target-directory=$(DESTDIR)$(call rpm_eval _sysconfdir)/netoik-rp/ conf/neotik-rp.conf
-	install --target-directory=$(DESTDIR)$(call rpm_eval _sysconfdir)/netoik-rp/ conf/ovh.ini
-	install --target-directory=$(DESTDIR)$(call rpm_eval _unitdir)/ services/netoik-rp.service
+	install --directory $(DESTDIR)$(call rpm_eval,_sysconfdir)/netoik-rp
+	install --target-directory=$(DESTDIR)$(call rpm_eval,_sysconfdir)/netoik-rp/ conf/neotik-rp.conf
+	install --target-directory=$(DESTDIR)$(call rpm_eval,_sysconfdir)/netoik-rp/ conf/ovh.ini
+	install --target-directory=$(DESTDIR)$(call rpm_eval,_unitdir)/ services/netoik-rp.service