updated for version 7.0001
diff --git a/src/toolcheck b/src/toolcheck
new file mode 100755
index 0000000..b05118a
--- /dev/null
+++ b/src/toolcheck
@@ -0,0 +1,36 @@
+#!/bin/sh
+# toolcheck -- check for tools that have severe bugs. Good that all the buggy
+# tools identify by version numbers. This is the spirit of GNU :-)
+#
+# 24.7.95 jw.
+
+retval=0
+reply="`sh -version -c exit 2>&1 < /dev/null`"
+case "$reply" in
+ GNU*1.14.3*)
+ echo "- sh is '$reply'";
+ echo " CAUTION: This shell has a buggy 'trap' command.";
+ echo " The configure script may fail silently.";
+ retval=1;
+ ;;
+ GNU*)
+ echo "- sh is '$reply' - probably OK.";
+ ;;
+ *) ;;
+esac
+
+reply="`sed --version 2>&1 < /dev/null`"
+case "$reply" in
+ GNU\ sed\ version\ 2.0[34])
+ echo "- sed is '$reply'";
+ echo " CAUTION: This sed cannot configure screen properly."
+ retval=1;
+ ;;
+ GNU\ sed\ version\ 2.05|GNU\ sed\ version\ 2.03\ kevin)
+ echo "- sed is '$reply' - good.";
+ ;;
+ GNU*) echo "- sed is '$reply'.";
+ ;;
+ *) ;;
+esac
+exit $retval