From a9bca4aa722a23d648e622da8a83f5ab3a943531 Mon Sep 17 00:00:00 2001
From: Jens Axboe <axboe@kernel.dk>
Date: Fri, 5 Apr 2013 12:55:42 +0200
Subject: [PATCH] configure: check for zlib

It's required for gfio, even if gfio isn't enabled. The client
and server uses compression for larger messages.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
---
 configure | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/configure b/configure
index 5dd683c6..4e2202fe 100755
--- a/configure
+++ b/configure
@@ -395,6 +395,28 @@ else
 fi
 echo "Wordsize                      $wordsize"
 
+##########################################
+# zlib probe
+zlib="no"
+cat > $TMPC <<EOF
+#include <zlib.h>
+int main(void)
+{
+  z_stream stream;
+  if (inflateInit(&stream) != Z_OK)
+    return 1;
+  return 0;
+}
+EOF
+if compile_prog "" "-lz" "zlib" ; then
+  zlib=yes
+  LIBS="-lz $LIBS"
+else
+  feature_not_found "zlib"
+  zlib=no
+fi
+echo "zlib                          $zlib"
+
 ##########################################
 # linux-aio probe
 libaio="no"
-- 
2.25.1