Build system: implement REUSE with SPDX identifiers

[lttng-ust.git] / m4 / ax_c___attribute__.m4

diff --git a/m4/ax_c___attribute__.m4 b/m4/ax_c___attribute__.m4
index 6a1ede15e6315876712dc0007100ea298028b593..86cb7d91fd3e201a79dab3a0265997bc7749d772 100644 (file)
--- a/m4/ax_c___attribute__.m4
+++ b/m4/ax_c___attribute__.m4
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-or-later WITH LicenseRef-Autoconf-exception-macro
+#
 # ===========================================================================
 #    https://www.gnu.org/software/autoconf-archive/ax_c___attribute__.html
 # ===========================================================================