Build system: implement REUSE with SPDX identifiers

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

diff --git a/m4/ax_check_class.m4 b/m4/ax_check_class.m4
index e673c2d35d62a29503f6ce6d270f38d3c4b167b1..e3778b4e4a2953b08c7d717f8fab5c782e79baa3 100644 (file)
--- a/m4/ax_check_class.m4
+++ b/m4/ax_check_class.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_check_class.html
 # ===========================================================================