diff options
Diffstat (limited to 'm4/extensions.m4')
| -rw-r--r-- | m4/extensions.m4 | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/m4/extensions.m4 b/m4/extensions.m4 index 44be1d1..5792a95 100644 --- a/m4/extensions.m4 +++ b/m4/extensions.m4 @@ -1,7 +1,7 @@ -# serial 21 -*- Autoconf -*- +# serial 22 -*- Autoconf -*- # Enable extensions on systems that normally disable them. -# Copyright (C) 2003, 2006-2020 Free Software Foundation, Inc. +# Copyright (C) 2003, 2006-2021 Free Software Foundation, Inc. # This file is free software; the Free Software Foundation # gives unlimited permission to copy and/or distribute it, # with or without modifications, as long as this notice is preserved. @@ -212,4 +212,16 @@ dnl it should only be defined when necessary. AC_DEFUN_ONCE([gl_USE_SYSTEM_EXTENSIONS], [ AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS]) + + dnl On OpenBSD 6.8 with GCC, the include files contain a couple of + dnl definitions that are only activated with an explicit -D_ISOC11_SOURCE. + dnl That's because this version of GCC (4.2.1) supports the option + dnl '-std=gnu99' but not the option '-std=gnu11'. + AC_REQUIRE([AC_CANONICAL_HOST]) + case "$host_os" in + openbsd*) + AC_DEFINE([_ISOC11_SOURCE], [1], + [Define to enable the declarations of ISO C 11 types and functions.]) + ;; + esac ]) |