From 1756ca5c13d79af26a6bae1c9913c2fbbde09ca0 Mon Sep 17 00:00:00 2001
From: Neil Fortner <nfortne2@hdfgroup.org>
Date: Fri, 27 Mar 2015 17:17:31 -0500
Subject: [svn-r26633] Add -D_DEFAULT_SOURCE to CPPFLAGS on Linux systems. 
 -D_BSD_SOURCE is deprecated in recent versions of glibc, and
 -D_DEFAULT_SOURCE is the replacement.  Keep -D_BSD_SOURCE for now to support
 older systems.  gcc will not issue a warning about -D_BSD_SOURCE being
 deprecated when -D_DEFAULT_SOURCE is supplied as well.

Tested: jam, koala, ostrich (h5committest)
---
 configure    | 5 +++++
 configure.ac | 5 +++++
 2 files changed, 10 insertions(+)

diff --git a/configure b/configure
index a272c8d..6863855 100755
--- a/configure
+++ b/configure
@@ -22929,6 +22929,11 @@ case "$host_cpu-$host_vendor-$host_os" in
     ## however, we do not do this since it breaks the big test on some
     ## older platforms.
     H5_CPPFLAGS="-D_BSD_SOURCE $H5_CPPFLAGS"
+
+    ## _BSD_SOURCE is deprecated as of glibc 2.20, in favor of _DEFAULT_SOURCE.
+    ## To avoid warnings, we define _DEFAULT_SOURCE in addition to _BSD_SOURCE,
+    ## which should work for all versions of glibc.
+    H5_CPPFLAGS="-D_DEFAULT_SOURCE $H5_CPPFLAGS"
     ;;
 esac
 
diff --git a/configure.ac b/configure.ac
index 2150de2..ea7608c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1120,6 +1120,11 @@ case "$host_cpu-$host_vendor-$host_os" in
     ## however, we do not do this since it breaks the big test on some 
     ## older platforms.
     H5_CPPFLAGS="-D_BSD_SOURCE $H5_CPPFLAGS"
+
+    ## _BSD_SOURCE is deprecated as of glibc 2.20, in favor of _DEFAULT_SOURCE.
+    ## To avoid warnings, we define _DEFAULT_SOURCE in addition to _BSD_SOURCE,
+    ## which should work for all versions of glibc.
+    H5_CPPFLAGS="-D_DEFAULT_SOURCE $H5_CPPFLAGS"
     ;;
 esac
 
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