--- Makefile.orig	2014-10-13 12:21:54 UTC
+++ Makefile
@@ -1,6 +1,7 @@
 PREFIX ?= /usr/local
 BINPREFIX ?= "$(PREFIX)/bin"
-MANPREFIX ?= "$(PREFIX)/share/man/man1"
+MANPREFIX = "$(PREFIX)/man/man1"
+ETCPREFIX ?= "$(PREFIX)/etc"
 BINS = $(wildcard bin/git-*)
 MANS = $(wildcard man/git-*.md)
 MAN_HTML = $(MANS:.md=.html)
@@ -17,7 +18,7 @@
 	@mkdir -p $(DESTDIR)$(BINPREFIX)
 	@echo "... installing bins to $(DESTDIR)$(BINPREFIX)"
 	@echo "... installing man pages to $(DESTDIR)$(MANPREFIX)"
-	$(eval TEMPFILE := $(shell mktemp))
+	$(eval TEMPFILE := $(shell mktemp -t git-extras))
 	@# chmod from rw-------(default) to rwxrwxr-x, so that users can exec the scripts
 	@chmod 775 $(TEMPFILE)
 	@$(foreach COMMAND, $(COMMANDS_USED_WITH_GIT_REPO), \
@@ -31,8 +32,8 @@
 		cp -f bin/$(COMMAND) $(DESTDIR)$(BINPREFIX); \
 	)
 	cp -f man/git-*.1 $(DESTDIR)$(MANPREFIX)
-	@mkdir -p $(DESTDIR)/etc/bash_completion.d
-	cp -f etc/bash_completion.sh $(DESTDIR)/etc/bash_completion.d/git-extras
+	@mkdir -p $(DESTDIR)$(ETCPREFIX)/bash_completion.d
+	cp -f etc/bash_completion.sh $(DESTDIR)$(ETCPREFIX)/bash_completion.d/git-extras
 
 man/%.html: man/%.md
 	ronn \