From bfaab6ed6bb3e8865cd8dd60375fbdc39203a862 Mon Sep 17 00:00:00 2001
From: Yang Tse <yangsita@gmail.com>
Date: Wed, 2 Jul 2008 17:42:08 +0000
Subject: The configure process will now halt when sed or grep are unavailable

---
 ares/configure.ac | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

(limited to 'ares')

diff --git a/ares/configure.ac b/ares/configure.ac
index 12b61514f..797940af2 100644
--- a/ares/configure.ac
+++ b/ares/configure.ac
@@ -5,6 +5,22 @@ AM_CONFIG_HEADER([config.h])
 AM_MAINTAINER_MODE
 AM_INIT_AUTOMAKE
 
+dnl sed is mandatory for configure process
+AC_PATH_PROG([SED], [sed], [not found],
+  [$PATH:/usr/bin:/usr/local/bin])
+AC_SUBST([SED])
+if test -z "$SED" || test "$SED" = "not found"; then
+  AC_MSG_ERROR([Cannot continue without sed.])
+fi
+
+dnl grep is mandatory for configure process
+AC_PATH_PROG([GREP], [grep], [not found],
+  [$PATH:/usr/bin:/usr/local/bin])
+AC_SUBST([GREP])
+if test -z "$GREP" || test "$GREP" = "not found"; then
+  AC_MSG_ERROR([Cannot continue without grep.])
+fi
+
 dnl
 dnl Detect the canonical host and target build environment
 dnl
-- 
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