From: François-Xavier Carton <fx.carton91@gmail.com>
Date: Wed, 8 Jun 2022 19:36:48 +0200
Subject: [PATCH] system libtiff has INT64

Enabling this, otherwise using system libtiff leads to errors. In particular
tests fail because there is some IFD8 data but the itkTIFFDataSize function
returns 0 instead of 8, resulting in invalid mem access.

--- a/Modules/ThirdParty/TIFF/src/itk_tiff.h.in.orig	2022-06-08 19:34:04.412431969 +0200
+++ b/Modules/ThirdParty/TIFF/src/itk_tiff.h.in	2022-06-08 19:34:26.240431631 +0200
@@ -34,6 +34,7 @@
 #cmakedefine ITK_TIFF_HAS_TIFFFieldReadCount
 #cmakedefine ITK_TIFF_HAS_TIFFField
 #ifdef ITK_USE_SYSTEM_TIFF
+# define TIFF_INT64_T int64_t
 # include <tiffio.h>
 #else
 # include "itktiff/tiffio.h"