-ifndef EMACS
- EMACS = emacs
-endif
-ifndef XEMACS
- XEMACS = xemacs
-endif
-FLAGS = -batch -q -no-site-file
-TAR = tar
-
-ifndef PREFIX
- PREFIX = NONE
-endif
-ifndef LISPDIR
- LISPDIR = NONE
-endif
-PACKAGEDIR = NONE
-VERSION_SPECIFIC_LISPDIR = NONE
-
-GOMI = liece-setup.el *.elc
-
-all: elc
+EMACS ?= emacs
+XEMACS ?= xemacs
+FLAGS ?= -batch -q -no-site-file
+TAR ?= tar
+PREFIX ?= NONE
+LISPDIR ?= NONE
+PACKAGEDIR ?= NONE
+VERSION_SPECIFIC_LISPDIR ?= NONE
+
+GOMI = liece-setup.el *.elc
+
+all:: elc