From b9aa6a15ea946c1d2ea622c8230576dceeb6ecee Mon Sep 17 00:00:00 2001
From: P. J. McDermott <pj@pehjota.net>
Date: Mon, 07 Dec 2015 17:20:04 -0500
Subject: configure.ac: Find gunzip utility

---
(limited to 'configure.ac')

diff --git a/configure.ac b/configure.ac
index 299fda9..f97791f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -79,6 +79,31 @@ AC_ARG_WITH(
 	]
 )
 AC_ARG_WITH(
+	[gunzip],
+	[AS_HELP_STRING([--with-gunzip=PATH], [path to gunzip utility])],
+	[
+		case "${withval}" in
+			'yes'|'')
+				AC_MSG_ERROR(
+					[--with-gunzip requires an argument])
+				;;
+			'no')
+				AC_MSG_ERROR([gunzip is required])
+				;;
+			*)
+				GUNZIP="${withval}"
+				AC_SUBST([GUNZIP])
+				;;
+		esac
+	],
+	[
+		AC_PATH_PROG([GUNZIP], [gunzip])
+		if test -z "${GUNZIP}"; then
+			AC_MSG_ERROR([gunzip not found])
+		fi
+	]
+)
+AC_ARG_WITH(
 	[sha256sum],
 	[AS_HELP_STRING([--with-sha256sum=PATH], [path to sha512sum utility])],
 	[
--
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