From 7862d8d80e8612b3e7285ce2fe3ec901fda05fe6 Mon Sep 17 00:00:00 2001
From: Alan Coopersmith <alan.coopersmith@oracle.com>
Date: Tue, 20 Dec 2022 12:21:37 -0800
Subject: configure: Use AC_SYS_LARGEFILE to enable large file support

Also adds include of "config.h" before any other header files
are included, to avoid mismatch of _FILE_OFFSET_BITS when
processing other header files.

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
---
 Mailbox.c    | 4 ++++
 configure.ac | 3 +++
 xbiff.c      | 4 ++++
 3 files changed, 11 insertions(+)

diff --git a/Mailbox.c b/Mailbox.c
index 4d263b6..9a592dd 100644
--- a/Mailbox.c
+++ b/Mailbox.c
@@ -40,6 +40,10 @@ from the X Consortium.
  *         XBiff*emptyPixmap:  mailempty
  */
 
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
 #include <X11/IntrinsicP.h>		/* for toolkit stuff */
 #include <X11/StringDefs.h>		/* for useful atom names */
 #include <X11/cursorfont.h>		/* for cursor constants */
diff --git a/configure.ac b/configure.ac
index 52ddb3d..dd8cbff 100644
--- a/configure.ac
+++ b/configure.ac
@@ -43,6 +43,9 @@ PKG_CHECK_MODULES(XBIFF, xaw7 xmu xbitmaps xext x11)
 # Checks for headers
 AC_CHECK_HEADERS([paths.h])
 
+# Checks for typedefs, structures, and compiler characteristics.
+AC_SYS_LARGEFILE
+
 # Allow builder to set path to look for mailboxes
 AC_MSG_CHECKING([for mailbox directory])
 AC_ARG_WITH([mailbox-directory],
diff --git a/xbiff.c b/xbiff.c
index 5fcdb51..dbf90eb 100644
--- a/xbiff.c
+++ b/xbiff.c
@@ -30,6 +30,10 @@ from the X Consortium.
 */
 /* $XFree86: xc/programs/xbiff/xbiff.c,v 1.3tsi Exp $ */
 
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <X11/Xatom.h>
-- 
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