https://code.wireshark.org/review/8481

From edefd74591d8f7010024a31576c2cb51eb1526ad Mon Sep 17 00:00:00 2001
From: Mike Frysinger <vapier@chromium.org>
Date: Sat, 16 May 2015 05:08:53 -0400
Subject: [PATCH] switch to AC_PATH_TOOL

The TOOL variant will automatically search for host prefixed scripts
(e.g. armv7a-unknown-linux-gnueabi-pcap-config) before falling back
to the default (i.e. pcap-config).  This makes cross-compiling a bit
simpler.

--- a/acinclude.m4
+++ b/acinclude.m4
@@ -349,7 +349,7 @@ AC_DEFUN([AC_WIRESHARK_PCAP_CHECK],
 	  # The user didn't specify a directory in which libpcap resides.
 	  # First, look for a pcap-config script.
 	  #
-	  AC_PATH_PROG(PCAP_CONFIG, pcap-config)
+	  AC_PATH_TOOL(PCAP_CONFIG, pcap-config)
 
 	  if test -n "$PCAP_CONFIG" ; then
 	    #
@@ -1296,7 +1296,7 @@ AC_DEFUN([AC_WIRESHARK_KRB5_CHECK],
 	    AC_DEFINE(HAVE_MIT_KERBEROS, 1, [Define to use MIT kerberos])
 	  fi
 	else
-	  AC_PATH_PROG(KRB5_CONFIG, krb5-config)
+	  AC_PATH_TOOL(KRB5_CONFIG, krb5-config)
 	  if test -x "$KRB5_CONFIG"
 	  then
 	    KRB5_FLAGS=`"$KRB5_CONFIG" --cflags`