From ea2a8dd268a31ad2562d23f41df90f134811d52c Mon Sep 17 00:00:00 2001
From: Kris Thielemans <k.thielemans@ucl.ac.uk>
Date: Sat, 4 Mar 2017 04:19:01 +0000
Subject: FindHDF5: Restore `-D` in HDF5_DEFINITIONS

Changes in commit v3.8.0-rc1~7^2~5 (FindHDF5: Fix command-line parsing
argument extraction order, 2017-02-02) accidentally dropped `-D` from
preprocessor definition flags extracted from the HDF5 compiler wrappers.

Fixes: #16693
---
 Modules/FindHDF5.cmake | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Modules/FindHDF5.cmake b/Modules/FindHDF5.cmake
index 65a825d..36cd335 100644
--- a/Modules/FindHDF5.cmake
+++ b/Modules/FindHDF5.cmake
@@ -352,7 +352,7 @@ macro( _HDF5_parse_compile_line
       list(APPEND ${include_paths} "${CMAKE_MATCH_1}")
     elseif("${arg}" MATCHES "^-D(.*)$")
       # compile definition
-      list(APPEND ${definitions} "${CMAKE_MATCH_1}")
+      list(APPEND ${definitions} "-D${CMAKE_MATCH_1}")
     elseif("${arg}" MATCHES "^-L(.*)$")
       # library search path
       list(APPEND ${library_paths} "${CMAKE_MATCH_1}")
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