From 5c785f98c5eb95f778345b74fcbdf2fe1dd96061 Mon Sep 17 00:00:00 2001
From: Ingo Schwarze <schwarze@openbsd.org>
Date: Mon, 20 Sep 2021 10:19:51 +0000
Subject: make the path to ar(1) configurable, needed by NixOS; suggested by
 Lukas Epple <sternenseemann at systemli dot org>

---
 Makefile                | 4 ++--
 configure               | 4 +++-
 configure.local.example | 9 +++++++--
 3 files changed, 12 insertions(+), 5 deletions(-)

diff --git a/Makefile b/Makefile
index 1cacdbdc..6871af8d 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-# $Id: Makefile,v 1.538 2021/09/20 10:14:34 schwarze Exp $
+# $Id: Makefile,v 1.539 2021/09/20 10:19:51 schwarze Exp $
 #
 # Copyright (c) 2011, 2013-2021 Ingo Schwarze <schwarze@openbsd.org>
 # Copyright (c) 2010, 2011, 2012 Kristaps Dzonsons <kristaps@bsd.lv>
@@ -513,7 +513,7 @@ Makefile.local config.h: configure $(TESTSRCS)
 	@exit 1
 
 libmandoc.a: $(MANDOC_COBJS) $(LIBMANDOC_OBJS)
-	ar rs $@ $(MANDOC_COBJS) $(LIBMANDOC_OBJS)
+	$(AR) rs $@ $(MANDOC_COBJS) $(LIBMANDOC_OBJS)
 
 mandoc: $(MAIN_OBJS) libmandoc.a
 	$(CC) -o $@ $(LDFLAGS) $(MAIN_OBJS) libmandoc.a $(LDADD)
diff --git a/configure b/configure
index c71205b7..5cf4e081 100755
--- a/configure
+++ b/configure
@@ -1,6 +1,6 @@
 #!/bin/sh
 #
-# $Id: configure,v 1.80 2021/09/19 15:05:39 schwarze Exp $
+# $Id: configure,v 1.81 2021/09/20 10:19:51 schwarze Exp $
 #
 # Copyright (c) 2014-2021 Ingo Schwarze <schwarze@openbsd.org>
 #
@@ -41,6 +41,7 @@ OSENUM=
 OSNAME=
 UTF8_LOCALE=
 
+AR=ar
 CC=cc
 CFLAGS=
 FATAL=0
@@ -634,6 +635,7 @@ INSTALL_TARGETS=
 cat << __HEREDOC__
 BUILD_TARGETS	= ${BUILD_TARGETS}
 INSTALL_TARGETS	= ${INSTALL_TARGETS}
+AR		= ${AR}
 CC		= ${CC}
 CFLAGS		= ${CFLAGS}
 LDADD		= ${LDADD}
diff --git a/configure.local.example b/configure.local.example
index 302eaaf2..76c06dff 100644
--- a/configure.local.example
+++ b/configure.local.example
@@ -1,6 +1,6 @@
-# $Id: configure.local.example,v 1.41 2021/09/19 16:19:09 schwarze Exp $
+# $Id: configure.local.example,v 1.42 2021/09/20 10:19:51 schwarze Exp $
 #
-# Copyright (c) 2014-2019 Ingo Schwarze <schwarze@openbsd.org>
+# Copyright (c) 2014-2021 Ingo Schwarze <schwarze@openbsd.org>
 #
 # Permission to use, copy, modify, and distribute this software for any
 # purpose with or without fee is hereby granted, provided that the above
@@ -36,6 +36,11 @@ CC=gcc
 # IBM AIX may need:
 CC=xlc
 
+# By default, "ar" is used as the library archive builder, but it
+# can be overridden.  For example, NixOS may not have ar(1) in the
+# PATH, but may want to specify an absolute path instead.
+AR=ar
+
 # For -Tutf8 and -Tlocale operation, mandoc(1) requires <locale.h>
 # providing setlocale(3) and <wchar.h> providing wcwidth(3) and
 # putwchar(3) with a wchar_t storing UCS-4 values.  Theoretically,
-- 
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