From 206f9fdf8691616666801b432857df3da391870d Mon Sep 17 00:00:00 2001
From: "Robert C. Sheets" <rcsheets@acm.org>
Date: Thu, 27 Aug 2015 03:18:51 -0700
Subject: [PATCH 1/3] Bail out with a useful message if a required command
 isn't available

---
 autogen.sh | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/autogen.sh b/autogen.sh
index 4b2af12..e2ece19 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -1,5 +1,22 @@
 #!/bin/sh
 
+set -e
+
+needed='rm mkdir autoreconf echo'
+if ! type $needed >/dev/null
+then
+  for cmd in $needed
+  do
+    if ! type $cmd >/dev/null
+    then
+      # Have type print an error message for each missing command
+      type $cmd || true
+    fi
+  done
+  echo A required command is missing. Unable to continue.
+  exit 1
+fi
+
 rm -rf autom4te.cache
 rm -f depcomp aclocal.m4 missing config.guess config.sub install-sh
 rm -f configure config.h.in config.h.in~ m4/libtool.m4 m4/lt*.m4 Makefile.in

From a62db28570e14168fe033c7de1ab70f28d56a9fe Mon Sep 17 00:00:00 2001
From: "Robert C. Sheets" <rcsheets@acm.org>
Date: Thu, 27 Aug 2015 03:21:44 -0700
Subject: [PATCH 2/3] One more comment

---
 autogen.sh | 1 +
 1 file changed, 1 insertion(+)

diff --git a/autogen.sh b/autogen.sh
index e2ece19..847cfc8 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -2,6 +2,7 @@
 
 set -e
 
+# Commands this script needs
 needed='rm mkdir autoreconf echo'
 if ! type $needed >/dev/null
 then

From b3b2964752836beac198026b62c90c18245e118f Mon Sep 17 00:00:00 2001
From: "Robert C. Sheets" <rcsheets@acm.org>
Date: Thu, 27 Aug 2015 10:47:48 -0700
Subject: [PATCH 3/3] When type output is not wanted, redirect all output
 instead of just stdout

---
 autogen.sh | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/autogen.sh b/autogen.sh
index 847cfc8..531dcb4 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -4,11 +4,11 @@ set -e
 
 # Commands this script needs
 needed='rm mkdir autoreconf echo'
-if ! type $needed >/dev/null
+if ! type $needed >/dev/null 2>&1
 then
   for cmd in $needed
   do
-    if ! type $cmd >/dev/null
+    if ! type $cmd >/dev/null 2>&1
     then
       # Have type print an error message for each missing command
       type $cmd || true