From 0f3fd8d53d9af7e024668c1cfae0780cb9f424dd Mon Sep 17 00:00:00 2001
From: Larry Knox <lrknox@hdfgroup.org>
Date: Fri, 10 Jul 2020 13:39:59 -0500
Subject: Remove path to szip header file from AM_CPPFLAGS when configure check
 of libsz fails. Fix for HDFFV-10830.

---
 configure.ac | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index d7e3cb5..fb50f94 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1604,7 +1604,10 @@ case "X-$withval" in
 
     if test "x$HAVE_SZLIB" = "xyes" -a "x$HAVE_SZLIB_H" = "xyes"; then
       AC_CHECK_LIB([sz], [SZ_BufftoBuffCompress],,
-                   [LDFLAGS="$saved_LDFLAGS"; AM_LDFLAGS="$saved_AM_LDFLAGS"; unset HAVE_SZLIB])
+                   [CPPFLAGS="$saved_CPPFLAGS"; AM_CPPFLAGS="$saved_AM_CPPFLAGS"; LDFLAGS="$saved_LDFLAGS"; AM_LDFLAGS="$saved_AM_LDFLAGS"; unset HAVE_SZLIB])
+      if test -z "$HAVE_SZLIB"; then
+        AC_MSG_RESULT([Using SZ_BufftoBuffCompress from libsz in $szlib_lib failed.  Szip not enabled.])
+      fi
     fi
 
     if test -z "$HAVE_SZLIB" -a -n "$HDF5_CONFIG_ABORT"; then
-- 
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