diff --git a/abigail.m4 b/abigail.m4
index 86c769b2..2c7626d7 100644
--- a/abigail.m4
+++ b/abigail.m4
@@ -1,28 +1,10 @@
+# SPDX-License-Identifier: GPL-3.0-or-later WITH GCC-exception-3.1
+#
 # Copyright (C) 2013-2020 Red Hat, Inc
-# 
-# This file is part of the GNU Application Binary Interface Generic
-# Analysis and Instrumentation Library (libabigail).  This library is
-# free software; you can redistribute it and/or modify it under the
-# terms of the GNU General Public License as published by the Free
-# Software Foundation; either version 3, or (at your option) any
-# later version.
-# 
-# This library is distributed in the hope that it will be useful, but
-# WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-# General Public License for more details.
-# 
-# Under Section 7 of GPL version 3, you are granted additional
-# permissions described in the GCC Runtime Library Exception, version
-# 3.1, as published by the Free Software Foundation.
-# 
-# You should have received a copy of the GNU General Public License
-# and a copy of the GCC Runtime Library Exception along with this
-# program; see the files COPYING3 and COPYING.RUNTIME respectively.
-# If not, see <http://www.gnu.org/licenses/>.
 #
-#// Author: Dodji Seketeli <dodji@redhat.com>
+# Author: Dodji Seketeli <dodji@redhat.com>
 
+#
 # ABIGAIL_INIT
 #
 # Handle the detection of the libabigail header and library files on
diff --git a/autoconf-archive/ax_check_python_modules.m4 b/autoconf-archive/ax_check_python_modules.m4
index 65381701..d5285dba 100644
--- a/autoconf-archive/ax_check_python_modules.m4
+++ b/autoconf-archive/ax_check_python_modules.m4
@@ -1,26 +1,8 @@
+# SPDX-License-Identifier: FSFAP
 # -*- Autoconf -*-
 #
 # ax_check_python_modules.m4 - Macros to locate python modules.
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 2 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful, but
-# WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-# General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-#
-# As a special exception to the GNU General Public License, if you
-# distribute this file as part of a program that contains a
-# configuration script generated by Autoconf, you may include it under
-# the same distribution terms that you use for the rest of that program.
-#
 # Author: Dodji Seketeli <dodji@seketeli.org>
 #
 
diff --git a/autoconf-archive/ax_compare_version.m4 b/autoconf-archive/ax_compare_version.m4
index 74dc0fdd..cddb15d7 100644
--- a/autoconf-archive/ax_compare_version.m4
+++ b/autoconf-archive/ax_compare_version.m4
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: FSFAP
 # ===========================================================================
 #    http://www.gnu.org/software/autoconf-archive/ax_compare_version.html
 # ===========================================================================
diff --git a/autoconf-archive/ax_prog_python_version.m4 b/autoconf-archive/ax_prog_python_version.m4
index 628a3e43..626d8ebd 100644
--- a/autoconf-archive/ax_prog_python_version.m4
+++ b/autoconf-archive/ax_prog_python_version.m4
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: FSFAP
 # ===========================================================================
 #  http://www.gnu.org/software/autoconf-archive/ax_prog_python_version.html
 # ===========================================================================
diff --git a/autoconf-archive/ax_valgrind_check.m4 b/autoconf-archive/ax_valgrind_check.m4
index d0e3c2d0..be834904 100644
--- a/autoconf-archive/ax_valgrind_check.m4
+++ b/autoconf-archive/ax_valgrind_check.m4
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: FSFAP
 # ===========================================================================
 #     http://www.gnu.org/software/autoconf-archive/ax_valgrind_check.html
 # ===========================================================================
diff --git a/gen-changelog.py b/gen-changelog.py
index 9b8e002f..3515aa02 100644
--- a/gen-changelog.py
+++ b/gen-changelog.py
@@ -1,4 +1,6 @@
 #!/usr/bin/env python
+# SPDX-License-Identifier: LGPL-2.0-or-later
+#
 # -*- mode: python -*-
 #
 # This python program has been copied from
@@ -11,19 +13,6 @@
 # published by the Free Software Foundaion; either version 2, or (at
 # your option) any later version.
 #
-# Thus, this program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU Lesser General Public License
-# as published by the Free Software Foundation; either version 2, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful, but
-# WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-# General Lesser Public License for more details.
-#
-# You should have received a copy of the GNU Lesser General Public
-# License along with this program; see the file COPYING-LGPLV2.  If
-# not, see <http://www.gnu.org/licenses/>.
 
 import sys
 import subprocess
diff --git a/include/abg-comp-filter.h b/include/abg-comp-filter.h
index 556bad4f..e02b32ae 100644
--- a/include/abg-comp-filter.h
+++ b/include/abg-comp-filter.h
@@ -1,23 +1,8 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
 //
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
-//
 // Author: Dodji Seketeli
 
 /// @file
diff --git a/include/abg-comparison.h b/include/abg-comparison.h
index c4eb5925..99c852d3 100644
--- a/include/abg-comparison.h
+++ b/include/abg-comparison.h
@@ -1,23 +1,8 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
 //
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
-//
 // Author: Dodji Seketeli
 
 #ifndef __ABG_COMPARISON_H__
diff --git a/include/abg-config.h b/include/abg-config.h
index 314fc343..e7fecdb2 100644
--- a/include/abg-config.h
+++ b/include/abg-config.h
@@ -1,22 +1,7 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
-//
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
 
 /// @file
 
diff --git a/include/abg-corpus.h b/include/abg-corpus.h
index 4e8a8e91..be679210 100644
--- a/include/abg-corpus.h
+++ b/include/abg-corpus.h
@@ -1,22 +1,7 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
-//
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
 
 /// @file
 
diff --git a/include/abg-cxx-compat.h b/include/abg-cxx-compat.h
index 71417718..d692464b 100644
--- a/include/abg-cxx-compat.h
+++ b/include/abg-cxx-compat.h
@@ -1,22 +1,7 @@
+// SPDX-License-Identifier: LGPL-2.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2019-2020 Google, Inc.
-//
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 2, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV2.  If
-// not, see <http://www.gnu.org/licenses/>.
 
 /// @file
 
diff --git a/include/abg-diff-utils.h b/include/abg-diff-utils.h
index b59ffa04..60937d1a 100644
--- a/include/abg-diff-utils.h
+++ b/include/abg-diff-utils.h
@@ -1,22 +1,7 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
-//
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
 
 /// @file
 ///
diff --git a/include/abg-dwarf-reader.h b/include/abg-dwarf-reader.h
index d0329aed..628cc334 100644
--- a/include/abg-dwarf-reader.h
+++ b/include/abg-dwarf-reader.h
@@ -1,23 +1,8 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
 //
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
-//
 // Author: Dodji Seketeli
 
 /// @file
diff --git a/include/abg-fwd.h b/include/abg-fwd.h
index ca4f85fc..12093328 100644
--- a/include/abg-fwd.h
+++ b/include/abg-fwd.h
@@ -1,22 +1,7 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
-//
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
 
 /// @file
 
diff --git a/include/abg-hash.h b/include/abg-hash.h
index 732b1451..c698a967 100644
--- a/include/abg-hash.h
+++ b/include/abg-hash.h
@@ -1,22 +1,7 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
-//
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
 
 /// @file
 
diff --git a/include/abg-ini.h b/include/abg-ini.h
index df791984..60d328df 100644
--- a/include/abg-ini.h
+++ b/include/abg-ini.h
@@ -1,23 +1,8 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
 //
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
-//
 // Author: Dodji Seketeli
 
 /// @file
diff --git a/include/abg-interned-str.h b/include/abg-interned-str.h
index 2bc8f430..6ba40586 100644
--- a/include/abg-interned-str.h
+++ b/include/abg-interned-str.h
@@ -1,23 +1,8 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2016-2020 Red Hat, Inc.
 //
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
-//
 // Author: Dodji Seketeli
 
 /// @file
diff --git a/include/abg-ir.h b/include/abg-ir.h
index dca0d12a..cb8d39e5 100644
--- a/include/abg-ir.h
+++ b/include/abg-ir.h
@@ -1,23 +1,8 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
 //
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
-//
 // Author: Dodji Seketeli
 
 /// @file
diff --git a/include/abg-libxml-utils.h b/include/abg-libxml-utils.h
index cf167b8a..f127962e 100644
--- a/include/abg-libxml-utils.h
+++ b/include/abg-libxml-utils.h
@@ -1,22 +1,7 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
-//
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
 
 /// @file
 
diff --git a/include/abg-libzip-utils.h b/include/abg-libzip-utils.h
index a1122794..5e52e069 100644
--- a/include/abg-libzip-utils.h
+++ b/include/abg-libzip-utils.h
@@ -1,22 +1,7 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
-//
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
 
 /// @file
 
diff --git a/include/abg-reader.h b/include/abg-reader.h
index d86fcb17..39ff7441 100644
--- a/include/abg-reader.h
+++ b/include/abg-reader.h
@@ -1,23 +1,8 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
 //
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
-//
 // Author: Dodji Seketeli
 
 /// @file
diff --git a/include/abg-regex.h b/include/abg-regex.h
index 7ab9fc08..d9b5a281 100644
--- a/include/abg-regex.h
+++ b/include/abg-regex.h
@@ -1,22 +1,7 @@
-// -*- mode: C++ -*-
+// SPDX-License-Identifier: LGPL-3.0-or-later
+// -*- Mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
-//
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
 
 /// @file
 ///
diff --git a/include/abg-reporter.h b/include/abg-reporter.h
index 6aec6a65..7e37969f 100644
--- a/include/abg-reporter.h
+++ b/include/abg-reporter.h
@@ -1,23 +1,8 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2017-2020 Red Hat, Inc.
 //
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
-//
 // Author: Dodji Seketeli
 
 /// @file
diff --git a/include/abg-sptr-utils.h b/include/abg-sptr-utils.h
index 2a12707b..6adf54b2 100644
--- a/include/abg-sptr-utils.h
+++ b/include/abg-sptr-utils.h
@@ -1,22 +1,7 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
-//
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
 
 /// @file
 ///
diff --git a/include/abg-suppression.h b/include/abg-suppression.h
index 6383b932..65698c16 100644
--- a/include/abg-suppression.h
+++ b/include/abg-suppression.h
@@ -1,23 +1,8 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2016-2020 Red Hat, Inc.
 //
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
-//
 // Author: Dodji Seketeli
 
 #ifndef __ABG_SUPPRESSION_H__
diff --git a/include/abg-tools-utils.h b/include/abg-tools-utils.h
index dc62b3ff..94f43f28 100644
--- a/include/abg-tools-utils.h
+++ b/include/abg-tools-utils.h
@@ -1,22 +1,7 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
-//
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
 
 ///@file
 
diff --git a/include/abg-traverse.h b/include/abg-traverse.h
index 92a8a24a..9b016793 100644
--- a/include/abg-traverse.h
+++ b/include/abg-traverse.h
@@ -1,22 +1,7 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
-//
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
 
 /// @file
 
diff --git a/include/abg-viz-common.h b/include/abg-viz-common.h
index 948b1f4c..5ab37186 100644
--- a/include/abg-viz-common.h
+++ b/include/abg-viz-common.h
@@ -1,22 +1,7 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
-//
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
 
 /// @file
 
diff --git a/include/abg-viz-dot.h b/include/abg-viz-dot.h
index ac84bd94..ceae3b10 100644
--- a/include/abg-viz-dot.h
+++ b/include/abg-viz-dot.h
@@ -1,22 +1,7 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
-//
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
 
 /// @file
 
diff --git a/include/abg-viz-svg.h b/include/abg-viz-svg.h
index 567f7896..601683a1 100644
--- a/include/abg-viz-svg.h
+++ b/include/abg-viz-svg.h
@@ -1,22 +1,7 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
-//
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
 
 /// @file
 
diff --git a/include/abg-workers.h b/include/abg-workers.h
index 65d3e837..2f3a2386 100644
--- a/include/abg-workers.h
+++ b/include/abg-workers.h
@@ -1,23 +1,8 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
 //
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
-
 // Author: Dodji Seketeli
 
 /// @file
diff --git a/include/abg-writer.h b/include/abg-writer.h
index d44b4838..ddb1d2cb 100644
--- a/include/abg-writer.h
+++ b/include/abg-writer.h
@@ -1,23 +1,8 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
 //
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
-//
 // Author: Dodji Seketeli
 
 /// @file
diff --git a/install-sh b/install-sh
index 377bb868..0a3cd07d 100755
--- a/install-sh
+++ b/install-sh
@@ -1,4 +1,5 @@
 #!/bin/sh
+# SPDX-License-Identifier: MIT
 # install - install a program, script, or datafile
 
 scriptversion=2011-11-20.07; # UTC
@@ -9,23 +10,6 @@ scriptversion=2011-11-20.07; # UTC
 #
 # Copyright (C) 1994 X Consortium
 #
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documentation files (the "Software"), to
-# deal in the Software without restriction, including without limitation the
-# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
-# sell copies of the Software, and to permit persons to whom the Software is
-# furnished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be included in
-# all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
-# X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
-# AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNEC-
-# TION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-#
 # Except as contained in this notice, the name of the X Consortium shall not
 # be used in advertising or otherwise to promote the sale, use or other deal-
 # ings in this Software without prior written authorization from the X Consor-
diff --git a/ltmain.sh b/ltmain.sh
index 63ae69dc..02087600 100644
--- a/ltmain.sh
+++ b/ltmain.sh
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # libtool (GNU libtool) 2.4.2
 # Written by Gordon Matzigkeit <gord@gnu.ai.mit.edu>, 1996
@@ -7,27 +8,6 @@
 # This is free software; see the source for copying conditions.  There is NO
 # warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 
-# GNU Libtool is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 2 of the License, or
-# (at your option) any later version.
-#
-# As a special exception to the GNU General Public License,
-# if you distribute this file as part of a program or library that
-# is built using GNU Libtool, you may include this file under the
-# same distribution terms that you use for the rest of that program.
-#
-# GNU Libtool is distributed in the hope that it will be useful, but
-# WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-# General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-
 # Usage: $progname [OPTION]... [MODE-ARG]...
 #
 # Provide generalized library-building support services.
diff --git a/src/abg-comp-filter.cc b/src/abg-comp-filter.cc
index 35c92772..79ac925a 100644
--- a/src/abg-comp-filter.cc
+++ b/src/abg-comp-filter.cc
@@ -1,23 +1,8 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
 //
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
-//
 // Author: Dodji Seketeli
 
 /// @file
diff --git a/src/abg-comparison-priv.h b/src/abg-comparison-priv.h
index 1e595313..5ff1f900 100644
--- a/src/abg-comparison-priv.h
+++ b/src/abg-comparison-priv.h
@@ -1,24 +1,8 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2017-2020 Red Hat, Inc.
 //
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
-//
-//
 // Author: Dodji Seketeli
 
 /// @file
diff --git a/src/abg-comparison.cc b/src/abg-comparison.cc
index bae9c266..fefe4aea 100644
--- a/src/abg-comparison.cc
+++ b/src/abg-comparison.cc
@@ -1,23 +1,8 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
 //
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
-//
 // Author: Dodji Seketeli
 
 /// @file
diff --git a/src/abg-config.cc b/src/abg-config.cc
index 34b7bf41..ddde9d23 100644
--- a/src/abg-config.cc
+++ b/src/abg-config.cc
@@ -1,22 +1,7 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
-//
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the files COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
 
 /// @file
 
diff --git a/src/abg-corpus-priv.h b/src/abg-corpus-priv.h
index e31734a9..bcc9ca61 100644
--- a/src/abg-corpus-priv.h
+++ b/src/abg-corpus-priv.h
@@ -1,22 +1,7 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2016-2020 Red Hat, Inc.
-//
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
 
 /// @file
 ///
diff --git a/src/abg-corpus.cc b/src/abg-corpus.cc
index 940d4840..11f68d78 100644
--- a/src/abg-corpus.cc
+++ b/src/abg-corpus.cc
@@ -1,22 +1,7 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
-//
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
 
 /// @file
 
diff --git a/src/abg-default-reporter.cc b/src/abg-default-reporter.cc
index 5d4acaa6..55fe12cd 100644
--- a/src/abg-default-reporter.cc
+++ b/src/abg-default-reporter.cc
@@ -1,23 +1,8 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2017-2020 Red Hat, Inc.
 //
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
-//
 // Author: Dodji Seketeli
 
 
diff --git a/src/abg-diff-utils.cc b/src/abg-diff-utils.cc
index 6c521f60..27519c03 100644
--- a/src/abg-diff-utils.cc
+++ b/src/abg-diff-utils.cc
@@ -1,22 +1,7 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
-//
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
 
 #include <cstring>
 
diff --git a/src/abg-dwarf-reader.cc b/src/abg-dwarf-reader.cc
index 61845a63..4554d16f 100644
--- a/src/abg-dwarf-reader.cc
+++ b/src/abg-dwarf-reader.cc
@@ -1,23 +1,8 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
 //
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
-//
 // Author: Dodji Seketeli
 
 /// @file
diff --git a/src/abg-elf-helpers.cc b/src/abg-elf-helpers.cc
index ed768d22..24bb678d 100644
--- a/src/abg-elf-helpers.cc
+++ b/src/abg-elf-helpers.cc
@@ -1,22 +1,7 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2020 Google, Inc.
-//
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
 
 /// @file
 ///
diff --git a/src/abg-elf-helpers.h b/src/abg-elf-helpers.h
index 647c9270..b0fe0c27 100644
--- a/src/abg-elf-helpers.h
+++ b/src/abg-elf-helpers.h
@@ -1,22 +1,7 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2020 Google, Inc.
-//
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
 
 /// @file
 ///
diff --git a/src/abg-hash.cc b/src/abg-hash.cc
index ca67689c..803f919d 100644
--- a/src/abg-hash.cc
+++ b/src/abg-hash.cc
@@ -1,22 +1,7 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
-//
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
 
 /// @file
 
diff --git a/src/abg-ini.cc b/src/abg-ini.cc
index 5dc438b4..3603d956 100644
--- a/src/abg-ini.cc
+++ b/src/abg-ini.cc
@@ -1,23 +1,8 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
 //
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
-//
 // Author: Dodji Seketeli
 
 /// @file
diff --git a/src/abg-internal.h b/src/abg-internal.h
index fbe5316d..b2e3a39e 100644
--- a/src/abg-internal.h
+++ b/src/abg-internal.h
@@ -1,23 +1,8 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2016-2020 Red Hat, Inc.
 //
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
-//
 // Author: Dodji Seketeli
 
 #ifndef __ABG_INTERNAL_H__
diff --git a/src/abg-ir-priv.h b/src/abg-ir-priv.h
index 63c63b14..62b1b720 100644
--- a/src/abg-ir-priv.h
+++ b/src/abg-ir-priv.h
@@ -1,23 +1,8 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2016-2020 Red Hat, Inc.
 //
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
-//
 // Author: Dodji Seketeli
 
 /// @file
diff --git a/src/abg-ir.cc b/src/abg-ir.cc
index 5198686e..85b8a19e 100644
--- a/src/abg-ir.cc
+++ b/src/abg-ir.cc
@@ -1,23 +1,8 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
 //
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
-//
 //Author: Dodji Seketeli
 
 /// @file
diff --git a/src/abg-leaf-reporter.cc b/src/abg-leaf-reporter.cc
index c2a766e6..8b0c5935 100644
--- a/src/abg-leaf-reporter.cc
+++ b/src/abg-leaf-reporter.cc
@@ -1,23 +1,8 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2017-2020 Red Hat, Inc.
 //
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
-//
 // Author: Dodji Seketeli
 
 
diff --git a/src/abg-libxml-utils.cc b/src/abg-libxml-utils.cc
index 2c46aad8..31788623 100644
--- a/src/abg-libxml-utils.cc
+++ b/src/abg-libxml-utils.cc
@@ -1,22 +1,7 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
-//
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
 
 /// @file
 
diff --git a/src/abg-libzip-utils.cc b/src/abg-libzip-utils.cc
index c0a2944a..f96741d6 100644
--- a/src/abg-libzip-utils.cc
+++ b/src/abg-libzip-utils.cc
@@ -1,22 +1,7 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
-//
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
 
 /// @file
 
diff --git a/src/abg-reader.cc b/src/abg-reader.cc
index cb279814..6eacfd5c 100644
--- a/src/abg-reader.cc
+++ b/src/abg-reader.cc
@@ -1,22 +1,7 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
-//
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
 
 /// @file
 ///
diff --git a/src/abg-regex.cc b/src/abg-regex.cc
index 5bcd130b..c124df8e 100644
--- a/src/abg-regex.cc
+++ b/src/abg-regex.cc
@@ -1,22 +1,7 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2016-2020 Red Hat, Inc.
-//
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
 
 /// @file
 ///
diff --git a/src/abg-reporter-priv.cc b/src/abg-reporter-priv.cc
index 78491143..b6545a90 100644
--- a/src/abg-reporter-priv.cc
+++ b/src/abg-reporter-priv.cc
@@ -1,23 +1,8 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2017-2020 Red Hat, Inc.
 //
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
-//
 // Author: Dodji Seketeli
 
 #include <libgen.h>
diff --git a/src/abg-reporter-priv.h b/src/abg-reporter-priv.h
index 84cb2382..2b1cb3cb 100644
--- a/src/abg-reporter-priv.h
+++ b/src/abg-reporter-priv.h
@@ -1,23 +1,8 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
 //
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
-//
 // Author: Dodji Seketeli
 
 #ifndef __ABG_REPORTER_PRIV_H__
diff --git a/src/abg-suppression-priv.h b/src/abg-suppression-priv.h
index deb08269..d0c16a83 100644
--- a/src/abg-suppression-priv.h
+++ b/src/abg-suppression-priv.h
@@ -1,23 +1,8 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2016-2020 Red Hat, Inc.
 //
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
-//
 // Author: Dodji Seketeli
 
 /// @file
diff --git a/src/abg-suppression.cc b/src/abg-suppression.cc
index 0d8604a6..8d6bb168 100644
--- a/src/abg-suppression.cc
+++ b/src/abg-suppression.cc
@@ -1,23 +1,8 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2016-2020 Red Hat, Inc.
 //
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
-//
 // Author: Dodji Seketeli
 
 /// @file
diff --git a/src/abg-tools-utils.cc b/src/abg-tools-utils.cc
index bc3d5871..efbb4d92 100644
--- a/src/abg-tools-utils.cc
+++ b/src/abg-tools-utils.cc
@@ -1,22 +1,7 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
-//
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
 
 ///@file
 
diff --git a/src/abg-traverse.cc b/src/abg-traverse.cc
index a3cb7979..c8e483cb 100644
--- a/src/abg-traverse.cc
+++ b/src/abg-traverse.cc
@@ -1,22 +1,7 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
-//
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
 
 /// @file
 
diff --git a/src/abg-viz-common.cc b/src/abg-viz-common.cc
index ab89413d..3473c5b4 100644
--- a/src/abg-viz-common.cc
+++ b/src/abg-viz-common.cc
@@ -1,22 +1,7 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
-//
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
 
 #include <stdexcept>
 #include <fstream>
diff --git a/src/abg-viz-dot.cc b/src/abg-viz-dot.cc
index d637b6e2..5fdeeea0 100644
--- a/src/abg-viz-dot.cc
+++ b/src/abg-viz-dot.cc
@@ -1,23 +1,7 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
-//
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
-
 
 #include <stdexcept>
 #include <fstream>
diff --git a/src/abg-viz-svg.cc b/src/abg-viz-svg.cc
index 07c78aeb..f510af6c 100644
--- a/src/abg-viz-svg.cc
+++ b/src/abg-viz-svg.cc
@@ -1,22 +1,7 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
-//
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
 
 #include <stdexcept>
 #include <fstream>
diff --git a/src/abg-workers.cc b/src/abg-workers.cc
index 9035854d..3ffd53db 100644
--- a/src/abg-workers.cc
+++ b/src/abg-workers.cc
@@ -1,23 +1,8 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
 //
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
-
 // Author: Dodji Seketeli
 
 /// @file
diff --git a/src/abg-writer.cc b/src/abg-writer.cc
index 216ca156..48b74711 100644
--- a/src/abg-writer.cc
+++ b/src/abg-writer.cc
@@ -1,22 +1,7 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
-//
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
 
 /// @file
 ///
diff --git a/tests/lib/catch.cc b/tests/lib/catch.cc
index aae1a627..0c56f12a 100644
--- a/tests/lib/catch.cc
+++ b/tests/lib/catch.cc
@@ -1,23 +1,8 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2020 Google, Inc.
 //
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
-
 // Author: Matthias Maennich
 
 /// @file
diff --git a/tests/lib/catch.hpp b/tests/lib/catch.hpp
index fdb046fe..a0a87f2b 100644
--- a/tests/lib/catch.hpp
+++ b/tests/lib/catch.hpp
@@ -1,5 +1,5 @@
-/*
- *  Catch v1.12.2
+// SPDX-License-Identifier: BSL-1.0
+/*  Catch v1.12.2
  *  Generated: 2018-05-14 15:10:01.112442
  *  ----------------------------------------------------------
  *  This file has been merged from multiple headers. Please don't edit it directly
diff --git a/tests/mockfedabipkgdiff.in b/tests/mockfedabipkgdiff.in
index 47c8cc82..346cacfa 100644
--- a/tests/mockfedabipkgdiff.in
+++ b/tests/mockfedabipkgdiff.in
@@ -1,23 +1,8 @@
 #!/usr/bin/env python
+# SPDX-License-Identifier: GPL-3.0-or-later
 # -*- coding: utf-8 -*-
 # -*- Mode: Python
 #
-# This file is part of the GNU Application Binary Interface Generic
-# Analysis and Instrumentation Library (libabigail).  This library is
-# free software; you can redistribute it and/or modify it under the
-# terms of the GNU General Public License as published by the
-# Free Software Foundation; either version 3, or (at your option) any
-# later version.
-#
-# This library is distributed in the hope that it will be useful, but
-# WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-# General Public License for more details.
-#
-# You should have received a copy of the GNU General Public
-# License along with this program; see the file COPYING-GPLV3.  If
-# not, see <http:#www.gnu.org/licenses/>.
-#
 # Author: Dodji Seketeli
 #
 # Based on some preliminary work from Chenxiong Qi, posted to
diff --git a/tests/print-diff-tree.cc b/tests/print-diff-tree.cc
index 24ad95c0..662c9540 100644
--- a/tests/print-diff-tree.cc
+++ b/tests/print-diff-tree.cc
@@ -1,25 +1,9 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
-
-// Copyright (C) 2013-2020 Red Hat, Inc.
 //
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
+// Copyright (C) 2013-2020 Red Hat, Inc.
 //
 // Author: Dodji Seketeli
-//
 
 #include <cstring>
 #include <iostream>
diff --git a/tests/runtestfedabipkgdiff.py.in b/tests/runtestfedabipkgdiff.py.in
index 04429b64..ac2d6243 100755
--- a/tests/runtestfedabipkgdiff.py.in
+++ b/tests/runtestfedabipkgdiff.py.in
@@ -1,23 +1,8 @@
 #!/usr/bin/env python
+# SPDX-License-Identifier: GPL-3.0-or-later
 # -*- coding: utf-8 -*-
 # -*- Mode: Python
 #
-# This file is part of the GNU Application Binary Interface Generic
-# Analysis and Instrumentation Library (libabigail).  This library is
-# free software; you can redistribute it and/or modify it under the
-# terms of the GNU General Public License as published by the
-# Free Software Foundation; either version 3, or (at your option) any
-# later version.
-#
-# This library is distributed in the hope that it will be useful, but
-# WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-# General Public License for more details.
-#
-# You should have received a copy of the GNU General Public
-# License along with this program; see the file COPYING-GPLV3.  If
-# not, see <http:#www.gnu.org/licenses/>.
-#
 # Author: Chenxiong Qi
 
 '''Runs tests for the fedabipkgdiff program
diff --git a/tests/test-abicompat.cc b/tests/test-abicompat.cc
index 7b02781c..7f33c4b3 100644
--- a/tests/test-abicompat.cc
+++ b/tests/test-abicompat.cc
@@ -1,23 +1,8 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2014-2020 Red Hat, Inc.
 //
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
-
 // Author: Dodji Seketeli
 
 /// @file
diff --git a/tests/test-abidiff-exit.cc b/tests/test-abidiff-exit.cc
index 6ebe2a09..294a25fa 100644
--- a/tests/test-abidiff-exit.cc
+++ b/tests/test-abidiff-exit.cc
@@ -1,23 +1,8 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2016-2020 Red Hat, Inc.
 //
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
-
 // Author: Dodji Seketeli
 
 /// @file
diff --git a/tests/test-abidiff.cc b/tests/test-abidiff.cc
index dcb1401b..625c1418 100644
--- a/tests/test-abidiff.cc
+++ b/tests/test-abidiff.cc
@@ -1,23 +1,8 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
 //
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
-
 // Author: Dodji Seketeli
 
 /// @file
diff --git a/tests/test-alt-dwarf-file.cc b/tests/test-alt-dwarf-file.cc
index cd8769df..2d78f4c9 100644
--- a/tests/test-alt-dwarf-file.cc
+++ b/tests/test-alt-dwarf-file.cc
@@ -1,23 +1,8 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
 //
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
-
 // Author: Dodji Seketeli
 
 /// @file
diff --git a/tests/test-annotate.cc b/tests/test-annotate.cc
index ba715cce..c01e483f 100644
--- a/tests/test-annotate.cc
+++ b/tests/test-annotate.cc
@@ -1,21 +1,6 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
-
 // Author: Ondrej Oprala
 
 /// @file
diff --git a/tests/test-core-diff.cc b/tests/test-core-diff.cc
index 531f4930..298ebc86 100644
--- a/tests/test-core-diff.cc
+++ b/tests/test-core-diff.cc
@@ -1,22 +1,7 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
-
-// Copyright (C) 2013-2020 Red Hat, Inc.
 //
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
+// Copyright (C) 2013-2020 Red Hat, Inc.
 //
 // Author: Dodji Seketeli
 
diff --git a/tests/test-cxx-compat.cc b/tests/test-cxx-compat.cc
index 0a230a54..4dfb41f6 100644
--- a/tests/test-cxx-compat.cc
+++ b/tests/test-cxx-compat.cc
@@ -1,23 +1,8 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2020 Google, Inc.
 //
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
-
 // Author: Matthias Maennich
 
 /// @file
@@ -27,4 +12,3 @@
 #include "lib/catch.hpp"
 
 #include "abg-cxx-compat.h"
-
diff --git a/tests/test-diff-dwarf-abixml.cc b/tests/test-diff-dwarf-abixml.cc
index f1696241..02046d83 100644
--- a/tests/test-diff-dwarf-abixml.cc
+++ b/tests/test-diff-dwarf-abixml.cc
@@ -1,23 +1,8 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
 //
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
-
 // Author: Dodji Seketeli
 
 /// @file compare the ABI of an an elf binary and an abixml file.
diff --git a/tests/test-diff-dwarf.cc b/tests/test-diff-dwarf.cc
index 3b8a6267..d65d63a6 100644
--- a/tests/test-diff-dwarf.cc
+++ b/tests/test-diff-dwarf.cc
@@ -1,23 +1,8 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
 //
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
-
 // Author: Dodji Seketeli
 
 /// @file
diff --git a/tests/test-diff-filter.cc b/tests/test-diff-filter.cc
index 26eb34c4..b3142460 100644
--- a/tests/test-diff-filter.cc
+++ b/tests/test-diff-filter.cc
@@ -1,23 +1,8 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
 //
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
-
 // Author: Dodji Seketeli
 
 /// @file
diff --git a/tests/test-diff-pkg.cc b/tests/test-diff-pkg.cc
index a7115b60..1876d3aa 100644
--- a/tests/test-diff-pkg.cc
+++ b/tests/test-diff-pkg.cc
@@ -1,23 +1,8 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
 //
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
-
 // Author: Sinny Kumari
 
 /// @file
diff --git a/tests/test-diff-suppr.cc b/tests/test-diff-suppr.cc
index 93476c7d..95f287c3 100644
--- a/tests/test-diff-suppr.cc
+++ b/tests/test-diff-suppr.cc
@@ -1,23 +1,8 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
 //
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
-
 // Author: Dodji Seketeli
 
 /// @file
diff --git a/tests/test-diff2.cc b/tests/test-diff2.cc
index 85d5aa68..120ec279 100644
--- a/tests/test-diff2.cc
+++ b/tests/test-diff2.cc
@@ -1,25 +1,9 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
-
-// Copyright (C) 2013-2020 Red Hat, Inc.
 //
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
+// Copyright (C) 2013-2020 Red Hat, Inc.
 //
 // Author: Dodji Seketeli
-//
 
 /// @file
 ///
diff --git a/tests/test-dot.cc b/tests/test-dot.cc
index fab0c19c..4e3920a9 100644
--- a/tests/test-dot.cc
+++ b/tests/test-dot.cc
@@ -1,27 +1,7 @@
-// Copyright (C) 2013-2019 Red Hat, Inc.
-//
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU General Public License as published by the Free
-// Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Public License for more details.
-
-// Under Section 7 of GPL version 3, you are granted additional
-// permissions described in the GCC Runtime Library Exception, version
-// 3.1, as published by the Free Software Foundation.
-
-// You should have received a copy of the GNU General Public License
-// and a copy of the GCC Runtime Library Exception along with this
-// program; see the files COPYING3 and COPYING.RUNTIME respectively.
-// If not, see <http://www.gnu.org/licenses/>.
-
+// SPDX-License-Identifier: GPL-3.0-with-GCC-exception
 // -*- mode: C++ -*-
+//
+// Copyright (C) 2013-2019 Red Hat, Inc.
 
 #include "abg-viz-dot.h"
 
diff --git a/tests/test-elf-helpers.cc b/tests/test-elf-helpers.cc
index 1b36ee2f..ca5d7eb7 100644
--- a/tests/test-elf-helpers.cc
+++ b/tests/test-elf-helpers.cc
@@ -1,23 +1,8 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2020 Google, Inc.
 //
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
-
 // Author: Matthias Maennich
 
 /// @file
diff --git a/tests/test-ini.cc b/tests/test-ini.cc
index 12b1fb6b..441f0eec 100644
--- a/tests/test-ini.cc
+++ b/tests/test-ini.cc
@@ -1,23 +1,8 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
 //
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
-
 // Author: Dodji Seketeli
 
 /// @file
diff --git a/tests/test-ir-walker.cc b/tests/test-ir-walker.cc
index 41b6adc5..6ebaeb2f 100644
--- a/tests/test-ir-walker.cc
+++ b/tests/test-ir-walker.cc
@@ -1,22 +1,7 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
-//
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
 
 #include <string>
 #include <fstream>
diff --git a/tests/test-kmi-whitelist.cc b/tests/test-kmi-whitelist.cc
index bcc5adee..7d45f156 100644
--- a/tests/test-kmi-whitelist.cc
+++ b/tests/test-kmi-whitelist.cc
@@ -1,23 +1,8 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2020 Google, Inc.
 //
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
-
 // Author: Matthias Maennich
 
 /// @file
diff --git a/tests/test-lookup-syms.cc b/tests/test-lookup-syms.cc
index 077f33b9..f2c1cb6e 100644
--- a/tests/test-lookup-syms.cc
+++ b/tests/test-lookup-syms.cc
@@ -1,23 +1,8 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
 //
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
-
 // Author: Dodji Seketeli
 
 /// @file
diff --git a/tests/test-read-dwarf.cc b/tests/test-read-dwarf.cc
index 7db4a028..431875ba 100644
--- a/tests/test-read-dwarf.cc
+++ b/tests/test-read-dwarf.cc
@@ -1,23 +1,8 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
 //
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
-
 // Author: Dodji Seketeli
 
 /// @file read ELF binaries containing DWARF, save them in XML corpus
diff --git a/tests/test-read-write.cc b/tests/test-read-write.cc
index 7d24bee5..d709aabb 100644
--- a/tests/test-read-write.cc
+++ b/tests/test-read-write.cc
@@ -1,22 +1,7 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
-//
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
 
 /// @file read an XML corpus file (in the native Abigail XML format),
 /// save it back and diff the resulting XML file against the input
diff --git a/tests/test-svg.cc b/tests/test-svg.cc
index 4a9d44dd..71ec75d5 100644
--- a/tests/test-svg.cc
+++ b/tests/test-svg.cc
@@ -1,27 +1,7 @@
-// Copyright (C) 2013-2019 Red Hat, Inc.
-//
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU General Public License as published by the Free
-// Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Public License for more details.
-
-// Under Section 7 of GPL version 3, you are granted additional
-// permissions described in the GCC Runtime Library Exception, version
-// 3.1, as published by the Free Software Foundation.
-
-// You should have received a copy of the GNU General Public License
-// and a copy of the GCC Runtime Library Exception along with this
-// program; see the files COPYING3 and COPYING.RUNTIME respectively.
-// If not, see <http://www.gnu.org/licenses/>.
-
+// SPDX-License-Identifier: GPL-3.0-with-GCC-exception
 // -*- mode: C++ -*-
+//
+// Copyright (C) 2013-2019 Red Hat, Inc.
 
 #include "abg-viz-svg.h"
 
diff --git a/tests/test-symtab.cc b/tests/test-symtab.cc
index 20e3071c..97e6cadf 100644
--- a/tests/test-symtab.cc
+++ b/tests/test-symtab.cc
@@ -1,23 +1,8 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2020 Google, Inc.
 //
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 2, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
-
 // Author: Matthias Maennich
 
 /// @file
diff --git a/tests/test-tools-utils.cc b/tests/test-tools-utils.cc
index 5597873f..0f20a02c 100644
--- a/tests/test-tools-utils.cc
+++ b/tests/test-tools-utils.cc
@@ -1,22 +1,7 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
-//
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
 
 /// @file
 ///
diff --git a/tests/test-types-stability.cc b/tests/test-types-stability.cc
index 1c1a5312..d0cf99c2 100644
--- a/tests/test-types-stability.cc
+++ b/tests/test-types-stability.cc
@@ -1,23 +1,8 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
 //
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
-
 // Author: Dodji Seketeli
 
 /// @file
diff --git a/tests/test-utils.cc b/tests/test-utils.cc
index 4daf7ce0..efcdfb76 100644
--- a/tests/test-utils.cc
+++ b/tests/test-utils.cc
@@ -1,23 +1,7 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
-//
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
-
 
 #include "test-utils.h"
 
diff --git a/tests/test-utils.h b/tests/test-utils.h
index ec9a520b..ec338458 100644
--- a/tests/test-utils.h
+++ b/tests/test-utils.h
@@ -1,22 +1,7 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
-//
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
 
 #ifndef __TEST_UTILS_H__
 #define __TEST_UTILS_H__
diff --git a/tests/test-write-read-archive.cc b/tests/test-write-read-archive.cc
index f6821051..539a9636 100644
--- a/tests/test-write-read-archive.cc
+++ b/tests/test-write-read-archive.cc
@@ -1,22 +1,7 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
-//
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
 
 #include <cstdlib>
 #include <iostream>
diff --git a/tools/abiar.cc b/tools/abiar.cc
index 22fe375e..b73de2f1 100644
--- a/tools/abiar.cc
+++ b/tools/abiar.cc
@@ -1,22 +1,7 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
-//
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
 
 #include <sys/types.h>
 #include <sys/stat.h>// The two above is for 'stat'
diff --git a/tools/abicompat.cc b/tools/abicompat.cc
index a5c707d7..d7147c62 100644
--- a/tools/abicompat.cc
+++ b/tools/abicompat.cc
@@ -1,23 +1,8 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2014-2020 Red Hat, Inc.
 //
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
-//
 // Author: Dodji Seketeli
 
 /// @file
diff --git a/tools/abidiff.cc b/tools/abidiff.cc
index 6ac81eeb..f5b40691 100644
--- a/tools/abidiff.cc
+++ b/tools/abidiff.cc
@@ -1,23 +1,8 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
 //
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
-//
 // Author: Dodji Seketeli
 
 /// @file
diff --git a/tools/abidw.cc b/tools/abidw.cc
index 6e37132c..a0603370 100644
--- a/tools/abidw.cc
+++ b/tools/abidw.cc
@@ -1,23 +1,8 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
 //
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
-//
 // Author: Dodji Seketeli
 
 /// @file
diff --git a/tools/abilint.cc b/tools/abilint.cc
index e9d6f93e..fc397a7c 100644
--- a/tools/abilint.cc
+++ b/tools/abilint.cc
@@ -1,23 +1,8 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
 //
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
-//
 // Author: Dodji Seketeli
 
 /// @file
diff --git a/tools/abipkgdiff.cc b/tools/abipkgdiff.cc
index 709b687a..6c248f4e 100644
--- a/tools/abipkgdiff.cc
+++ b/tools/abipkgdiff.cc
@@ -1,23 +1,8 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2015-2020 Red Hat, Inc.
 //
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
-//
 // Author: Sinny Kumari
 
 /// @file
diff --git a/tools/abisym.cc b/tools/abisym.cc
index 2da45b41..d6089a88 100644
--- a/tools/abisym.cc
+++ b/tools/abisym.cc
@@ -1,23 +1,8 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
 //
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
-
 // Author: Dodji Seketeli
 
 /// @file
diff --git a/tools/binilint.cc b/tools/binilint.cc
index 4f0abaac..94d55951 100644
--- a/tools/binilint.cc
+++ b/tools/binilint.cc
@@ -1,23 +1,8 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2013-2020 Red Hat, Inc.
 //
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
-
 // Author: Dodji Seketeli
 
 /// @file
diff --git a/tools/fedabipkgdiff b/tools/fedabipkgdiff
index 06ab5732..7e10416d 100755
--- a/tools/fedabipkgdiff
+++ b/tools/fedabipkgdiff
@@ -1,25 +1,10 @@
 #!/usr/bin/env python
+# SPDX-License-Identifier: GPL-3.0-or-later
 # -*- coding: utf-8 -*-
 # -*- Mode: Python
 #
 # Copyright (C) 2013-2016 Red Hat, Inc.
 #
-# This file is part of the GNU Application Binary Interface Generic
-# Analysis and Instrumentation Library (libabigail).  This library is
-# free software; you can redistribute it and/or modify it under the
-# terms of the GNU General Public License as published by the
-# Free Software Foundation; either version 3, or (at your option) any
-# later version.
-#
-# This library is distributed in the hope that it will be useful, but
-# WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-# General Public License for more details.
-#
-# You should have received a copy of the GNU General Public
-# License along with this program; see the file COPYING-GPLV3.  If
-# not, see <http:#www.gnu.org/licenses/>.
-#
 # Author: Chenxiong Qi
 
 from __future__ import print_function
diff --git a/tools/kmidiff.cc b/tools/kmidiff.cc
index 2840eb08..7798cba6 100644
--- a/tools/kmidiff.cc
+++ b/tools/kmidiff.cc
@@ -1,23 +1,8 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
 // -*- Mode: C++ -*-
 //
 // Copyright (C) 2017-2020 Red Hat, Inc.
 //
-// This file is part of the GNU Application Binary Interface Generic
-// Analysis and Instrumentation Library (libabigail).  This library is
-// free software; you can redistribute it and/or modify it under the
-// terms of the GNU Lesser General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This library is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Lesser Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this program; see the file COPYING-LGPLV3.  If
-// not, see <http://www.gnu.org/licenses/>.
-//
 // Author: Dodji Seketeli
 
 /// @file