r196: Allow compiling against Linux 2.6.18 nbd.h

[nbd.git] / configure.ac

diff --git a/configure.ac b/configure.ac
index 568f661..d300bd8 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -67,12 +67,10 @@ case "`uname`" in
      *) AC_MSG_RESULT(no) ;;
 esac
 AC_MSG_CHECKING(where to find a working nbd.h)
-dnl We need to check for NBD_CMD_DISC, but that's part of an enum, it is not
-dnl #define'd. Therefore, we check for something which is differently #define'd
-dnl in the old or new versions, even if we don't really care about that.
-dnl This might break at some time, but it should work for now, so...
 AC_TRY_COMPILE([#define u32 int
 #define u64 int
+#define __be32 int
+#define __be64 int
 #include "nbd.h"
 ],
 [int foo=NBD_CMD_DISC], 
@@ -80,6 +78,8 @@ AC_TRY_COMPILE([#define u32 int
     NBD_H='"nbd.h"'],
   AC_TRY_COMPILE([#define u32 int
 #define u64 int
+#define __be32 int
+#define __be64 int
 #include <linux/nbd.h>
   ],
 [int foo=NBD_CMD_DISC],