From f15afef6b3166e5e1466fc1faed224178094c4e2 Mon Sep 17 00:00:00 2001
From: Dana Robinson <43805+derobins@users.noreply.github.com>
Date: Fri, 1 Apr 2022 13:42:22 -0700
Subject: Fix for unexported global variable on Windows (#1568)

---
 src/H5private.h | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/H5private.h b/src/H5private.h
index 08e8a5e..d98d76d 100644
--- a/src/H5private.h
+++ b/src/H5private.h
@@ -1990,8 +1990,11 @@ extern hbool_t H5_libterm_g; /* Is the library being shutdown? */
 
 /* Extern global to determine if we should use selection I/O if available (this
  * variable should be removed once selection I/O performs as well as the
- * previous scalar I/O implementation */
-extern hbool_t H5_use_selection_io_g;
+ * previous scalar I/O implementation
+ *
+ * NOTE: Must be exposed via H5_DLLVAR so parallel tests pass on Windows.
+ */
+H5_DLLVAR hbool_t H5_use_selection_io_g;
 
 #ifdef H5_HAVE_CODESTACK
 
-- 
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