X-Git-Url: https://ncurses.scripts.mit.edu/?p=ncurses.git;a=blobdiff_plain;f=test%2Faclocal.m4;h=b787f030ab532b7295313a2e2165ba7bdd31c05a;hp=81c1b9f05d7b560cf07d5a9fca414cc770be1e97;hb=96592d717179f99c8fe1c5a63fc4a26c24867288;hpb=aa70bf3c762c5b6407bf34812d63c20f7ac8ffdd

diff --git a/test/aclocal.m4 b/test/aclocal.m4
index 81c1b9f0..b787f030 100644
--- a/test/aclocal.m4
+++ b/test/aclocal.m4
@@ -26,7 +26,7 @@ dnl sale, use or other dealings in this Software without prior written       *
 dnl authorization.                                                           *
 dnl***************************************************************************
 dnl
-dnl $Id: aclocal.m4,v 1.130 2016/06/25 20:29:33 tom Exp $
+dnl $Id: aclocal.m4,v 1.131 2016/08/06 23:42:15 tom Exp $
 dnl
 dnl Author: Thomas E. Dickey
 dnl
@@ -1629,7 +1629,7 @@ if test $cf_cv_getopt_header = getopt.h ; then
 fi
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_GNU_SOURCE version: 6 updated: 2005/07/09 13:23:07
+dnl CF_GNU_SOURCE version: 7 updated: 2016/08/05 05:15:37
 dnl -------------
 dnl Check if we must define _GNU_SOURCE to get a reasonable value for
 dnl _XOPEN_SOURCE, upon which many POSIX definitions depend.  This is a defect
@@ -1656,7 +1656,20 @@ make an error
 	CPPFLAGS="$cf_save"
 	])
 ])
-test "$cf_cv_gnu_source" = yes && CPPFLAGS="$CPPFLAGS -D_GNU_SOURCE"
+
+if test "$cf_cv_gnu_source" = yes
+then
+AC_CACHE_CHECK(if we should also define _DEFAULT_SOURCE,cf_cv_default_source,[
+CPPFLAGS="$CPPFLAGS -D_GNU_SOURCE"
+	AC_TRY_COMPILE([#include <sys/types.h>],[
+#ifdef _DEFAULT_SOURCE
+make an error
+#endif],
+		[cf_cv_default_source=no],
+		[cf_cv_default_source=yes])
+	])
+test "$cf_cv_default_source" = yes && CPPFLAGS="$CPPFLAGS -D_DEFAULT_SOURCE"
+fi
 ])dnl
 dnl ---------------------------------------------------------------------------
 dnl CF_HEADER_PATH version: 13 updated: 2015/04/15 19:08:48