From 7536d690fdb8859193cdfdd2f68752711425bdd0 Mon Sep 17 00:00:00 2001
From: Nicholas Marriott <nicholas.marriott@gmail.com>
Date: Sun, 1 Mar 2015 21:46:05 +0000
Subject: [PATCH] Explicitly look for cpp and egrep to avoid AC_EGREP_CPP
 messing up output.

---
 configure.ac | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/configure.ac b/configure.ac
index a5b212ea..4a321d5c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -18,6 +18,8 @@ AC_CANONICAL_HOST
 # Set up the compiler in two different ways and say yes we may want to install.
 AC_PROG_CC
 AM_PROG_CC_C_O
+AC_PROG_CPP
+AC_PROG_EGREP
 AC_PROG_INSTALL
 
 # Default tmux.conf goes in /etc not ${prefix}/etc.