From 9a08dec095725012546ea93ac07142a570d1b220 Mon Sep 17 00:00:00 2001
From: Stefan Kreutz <mail@skreutz.com>
Date: Wed, 9 Nov 2022 09:49:02 +0100
Subject: Port to GNU/Linux

Tested on Void Linux x86_64 glibc.
---
 .gitignore |  1 +
 Makefile   | 36 +++++++++++++++++++++++++++++-------
 README.md  | 21 ++++++++++++++++++---
 configure  | 18 ++++++++++++++++++
 4 files changed, 66 insertions(+), 10 deletions(-)
 create mode 100644 .gitignore
 create mode 100755 configure

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..aee2e4c
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+config.mk
diff --git a/Makefile b/Makefile
index 552ebda..8f06eeb 100644
--- a/Makefile
+++ b/Makefile
@@ -1,9 +1,31 @@
-MAN=    jotpass.1
-BINDIR= /usr/local/bin
-MANDIR= /usr/local/man/man
+# Portable makefile supporting OpenBSD and GNU/Linux.
 
-beforeinstall:
-	${INSTALL} ${INSTALL_COPY} -o ${BINOWN} -g ${BINGRP} -m ${BINMODE} \
-		${.CURDIR}/jotpass.ksh ${DESTDIR}${BINDIR}/jotpass
+PREFIX = /usr/local
+INSTALL = install
+BINDIR = bin
+BINOWN = root
+BINGRP = root
+BINMODE = 555
+MANDIR = man/man
+MANOWN = root
+MANGRP = root
+MANMODE = 444
 
-.include <bsd.prog.mk>
+include config.mk
+
+all:
+
+clean:
+
+lint:
+	shellcheck -a jotpass.ksh
+	mandoc -T lint -W warning jotpass.1
+	-mandoc -T lint -W all jotpass.1
+
+install:
+	${INSTALL} -o ${BINOWN} -g ${BINGRP} -m ${BINMODE} jotpass.ksh ${DESTDIR}${PREFIX}/${BINDIR}/jotpass
+	${INSTALL} -o ${MANOWN} -g ${MANGRP} -m ${MANMODE} jotpass.1 ${DESTDIR}${PREFIX}/${MANDIR}1/jotpass.1
+
+uninstall:
+	rm -f ${DESTDIR}${PREFIX}/${BINDIR}/jotpass
+	rm -f ${DESTDIR}${PREFIX}/${MANDIR}1/jotpass.1
diff --git a/README.md b/README.md
index 866beac..70341df 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 # Jotpass
 
-Jotpass is a BSD utility that facilitates generating random passwords suitable
-for handwriting. See [this][intro] blog post for an introduction.
+The `jotpass` utility facilitates generating random passwords suitable for
+handwriting. See [this][intro] blog post for an introduction.
 
 [intro]: https://www.skreutz.com/posts/readable-random-passwords-with-jot/
 
@@ -14,6 +14,21 @@ Print a random password:
 
 See the manual page for details.
 
+## Dependencies
+
+The `jotpass` utility depends on `ksh(1)`, `jot(1)`, and some base utilities
+like `sed(1)`.
+
+On OpenBSD these are included in the default base installation.
+
+On Void Linux you can install the dependencies using `xbps-install(1)`:
+follows:
+
+    $ sudo xbps-install -S oksh outils coreutils bc sed
+
 ## Installation
 
-Run `make install` as root to install the `jotpass` utility and man page.
+    $ ./configure
+    $ make
+    $ sudo make install
+
diff --git a/configure b/configure
new file mode 100755
index 0000000..9a1e936
--- /dev/null
+++ b/configure
@@ -0,0 +1,18 @@
+#! /bin/sh
+
+set -o errexit
+set -o nounset
+
+exec 3>config.mk
+
+case "$( uname )" in
+  OpenBSD)
+    echo 'BINGRP = bin' 1>&3
+    echo 'MANGRP = bin' 1>&3
+    ;;
+  Linux)
+    echo 'BINMODE = 755' 1>&3
+    echo 'MANMODE = 644' 1>&3
+    echo 'MANDIR = share/man/man' 1>&3
+    ;;
+esac
-- 
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