--- info/Makefile.orig	2021-01-31 07:40:24 UTC
+++ info/Makefile
@@ -15,7 +15,7 @@
 ## EDIT THE FOLLOWINGS
 ##
 
-prefix=/usr/local
+prefix=${PREFIX}
 infodir=$(prefix)/info
 
 EMACS=emacs
@@ -59,6 +59,7 @@ mew.info: tmp.texi
 	$(EMACS) -batch -q -no-site-file \
 		--eval "(set-default-coding-systems 'utf-8-unix)" \
 		-l texinfmt -f batch-texinfo-format $?
+	$(RM) tmp.text
 
 tmpj.texi: mew.texi
 	sed -e 's/@setfilename mew.info/@setfilename mew.ja.info/' \
@@ -69,6 +70,7 @@ mew.ja.info: tmpj.texi
 	$(EMACS) -batch -q -no-site-file \
 		--eval "(set-default-coding-systems 'utf-8-unix)" \
 		-l texinfmt -f batch-texinfo-format $?
+	$(RM) tmpj.text
 
 install: install-info
 install-info: