From c955d291ab89b0b577179f914a297418c5ecdb62 Mon Sep 17 00:00:00 2001
From: P. J. McDermott <pjm@nac.net>
Date: Mon, 08 Oct 2012 18:17:28 -0400
Subject: Sanitize option names in configure.

---
(limited to 'configure')

diff --git a/configure b/configure
index c5743d1..67bc927 100755
--- a/configure
+++ b/configure
@@ -202,6 +202,7 @@ EOF
 			exit 1
 		fi
 		if ${_optarg_set}; then
+			_opt="$(printf '%s' "${_opt}" | tr -c '[a-z0-9]' '_')"
 			eval ${_opt}=\$\{_optarg\}
 		else
 			_prev="${_opt}"
--
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