From c4b85ba704a1b5257dc82786a84f676bacb7b027 Mon Sep 17 00:00:00 2001
From: Luke Dashjr <luke-jr+git@utopios.org>
Date: Thu, 20 Aug 2020 17:41:54 +0000
Subject: Bugfix: Define and use HAVE_FDATASYNC correctly outside LevelDB

---
 configure.ac        | 2 +-
 src/util/system.cpp | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/configure.ac b/configure.ac
index 3ab97eb531..ee6c6962e1 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1039,13 +1039,13 @@ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <stdint.h>
  [ AC_MSG_RESULT(no)]
 )
 
-dnl LevelDB platform checks
 AC_MSG_CHECKING(for fdatasync)
 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <unistd.h>]],
  [[ fdatasync(0); ]])],
  [ AC_MSG_RESULT(yes); HAVE_FDATASYNC=1 ],
  [ AC_MSG_RESULT(no); HAVE_FDATASYNC=0 ]
 )
+AC_DEFINE_UNQUOTED([HAVE_FDATASYNC], [$HAVE_FDATASYNC], [Define to 1 if fdatasync is available.])
 
 AC_MSG_CHECKING(for F_FULLFSYNC)
 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <fcntl.h>]],
diff --git a/src/util/system.cpp b/src/util/system.cpp
index 7b74789b32..f5931b5ff1 100644
--- a/src/util/system.cpp
+++ b/src/util/system.cpp
@@ -1025,7 +1025,7 @@ bool FileCommit(FILE *file)
         return false;
     }
 #else
-    #if defined(HAVE_FDATASYNC)
+    #if HAVE_FDATASYNC
     if (fdatasync(fileno(file)) != 0 && errno != EINVAL) { // Ignore EINVAL for filesystems that don't support sync
         LogPrintf("%s: fdatasync failed: %d\n", __func__, errno);
         return false;
-- 
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