From bea9152aa811d85301b7a8ed5edb44593aadaf61 Mon Sep 17 00:00:00 2001
From: Daniel Stenberg <daniel@haxx.se>
Date: Mon, 15 Mar 2004 07:47:13 +0000
Subject: Check for a GNU version of m4, since autoconf won't run nicely
 without one.

---
 buildconf | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

(limited to 'buildconf')

diff --git a/buildconf b/buildconf
index ee2721885..29abf2704 100755
--- a/buildconf
+++ b/buildconf
@@ -138,6 +138,20 @@ fi
 
 echo "buildconf: libtool version $lt_version (ok)"
 
+#--------------------------------------------------------------------------
+# m4 check
+#
+m4=`${M4:-m4} --version 2>/dev/null|head -1`;
+m4_version=`echo $m4 | sed -e 's/^.* \([0-9]\)/\1/' -e 's/[a-z]* *$//'`
+
+if { echo $m4 | grep "GNU" >/dev/null 2>&1; } then
+  echo "buildconf: GNU m4 version $m4_version (ok)"
+else
+  echo "buildconf: m4 version $m4 found. You need a GNU m4 installed!"
+  exit 1
+fi
+
+
 # ------------------------------------------------------------
 
 # run the correct scripts now
-- 
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