Ensure that we don't inherit OS and others from env.

diff --git a/configure b/configure
index 7de2a9b90a99ed6dfa1c04c7c694b703650a3c7f..b59b3c10533037971eff12ddccc5384745ab5802 100755 (executable)
--- a/configure
+++ b/configure
@@ -1,11 +1,18 @@
 #!/bin/sh
 # Try and be like autotools configure, but without autotools
 
+# Ensure that we do not inherit these from env
 HOOKSET=false
 ARC4RANDOM=
 CLOSEFROM=
 GETLINE=
 STRLCPY=
+OS=
+BUILD=
+HOST=
+TARGET=
+DEBUG=
+FORK=
 
 for x; do
        opt=${x%%=*}