From b8116a874ba58e00919f4000e51865f2c91dd2f5 Mon Sep 17 00:00:00 2001
From: Dan Ehrenberg <dehrenberg@chromium.org>
Date: Tue, 14 Apr 2015 15:58:17 -0700
Subject: [PATCH] mtd: Add CONFIG_MTD to ./configure script

The CONFIG_MTD option will allow the mtd ioengine to be built. It
only works when the Linux MTD header is present.

Signed-off-by: Dan Ehrenberg <dehrenberg@chromium.org>
Signed-off-by: Jens Axboe <axboe@fb.com>
---
 configure | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/configure b/configure
index c1a4915d..ff97200c 100755
--- a/configure
+++ b/configure
@@ -1369,6 +1369,23 @@ if test "$libhdfs" = "yes" ; then
 fi
 echo "HDFS engine                   $libhdfs"
 
+##########################################
+# Check whether we have MTD
+mtd="no"
+cat > $TMPC << EOF
+#include <mtd/mtd-user.h>
+#include <sys/ioctl.h>
+int main(int argc, char **argv)
+{
+  struct mtd_info_user info;
+  return ioctl(0, MEMGETINFO, &info);
+}
+EOF
+if compile_prog "" "" "mtd"; then
+  mtd="yes"
+fi
+echo "MTD                           $mtd"
+
 # Check if we have lex/yacc available
 yacc="no"
 yacc_is_bison="no"
@@ -1572,6 +1589,9 @@ if test "$libhdfs" = "yes" ; then
   echo "FIO_LIBHDFS_INCLUDE=$FIO_LIBHDFS_INCLUDE" >> $config_host_mak
   echo "FIO_LIBHDFS_LIB=$FIO_LIBHDFS_LIB" >> $config_host_mak
  fi
+if test "$mtd" = "yes" ; then
+  output_sym "CONFIG_MTD"
+fi
 if test "$arith" = "yes" ; then
   output_sym "CONFIG_ARITHMETIC"
   if test "$yacc_is_bison" = "yes" ; then
-- 
2.25.1