diff -up squid-3.4.9/configure.ac.egrep squid-3.4.9/configure.ac
--- squid-3.4.9/configure.ac.egrep	2014-11-22 05:15:02.438839068 +0100
+++ squid-3.4.9/configure.ac	2014-11-22 05:25:52.120683510 +0100
@@ -28,6 +28,9 @@ if test "x$LDFLAGS" = "x" ; then
   LDFLAGS="-g"
 fi
 
+# grep is used in checks below
+AC_PROG_EGREP
+
 # Check for GNU cc
 AC_PROG_CC
 AM_PROG_CC_C_O
@@ -99,7 +102,6 @@ AC_PROG_LIBTOOL
 AC_PROG_CPP
 AC_PROG_INSTALL
 AC_PROG_LN_S
-AC_PROG_EGREP
 
 AC_PATH_PROG(SH, sh, /bin/sh)
 AC_PATH_PROG(FALSE, false, /usr/bin/false)