Add MANDIR variable and use it

Follow GNU Coding Standards and increase interoperability with package
managers.
No semantic change.

Signed-off-by: Silvio Rhatto <rhatto@riseup.net>

diff --git a/Makefile b/Makefile
index 0dc138b948922037d7469263a72ac7368592fea2..b1c347aaf717aea1b39834556361a3a4f45e277b 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -17,6 +17,7 @@
 PACKAGE  = keyringer
 VERSION  = $(shell ./keyringer | head -n 1 | cut -d ' ' -f 2)
 PREFIX  ?= /usr/local
+MANDIR ?=$(PREFIX)/share/man
 ARCHIVE ?= tarballs
 INSTALL  = /usr/bin/install
 
@@ -38,7 +39,7 @@ install_doc:
        $(INSTALL) -D -m 0644 LICENSE $(DESTDIR)/$(PREFIX)/share/doc/$(PACKAGE)/LICENSE
 
 install_man:
-       $(INSTALL) -D -m 0644 share/man/keyringer.1 $(DESTDIR)/$(PREFIX)/share/man/man1/keyringer.1
+       $(INSTALL) -D -m 0644 share/man/keyringer.1 $(DESTDIR)/$(MANDIR)/man1/keyringer.1
 
 install_completion:
        $(INSTALL) -D -m 0644 lib/keyringer/completions/bash/keyringer $(DESTDIR)/$(PREFIX)/share/bash-completion/completions/keyringer