chore(license): add headers to project files

- document copyright and GPL-3.0-or-later licensing
- cover CMake flags and module export definitions

1 files changed, 25 insertions, 0 deletions

diff --git a/cmake/FlagsOverrides.cmake b/cmake/FlagsOverrides.cmake
index 6c5c994..8eab45c 100644
--- a/cmake/FlagsOverrides.cmake
+++ b/cmake/FlagsOverrides.cmake
@@ -1,3 +1,28 @@
+# Copyright (C) 2021-2026 Saturneric <[email protected]>
+#
+# This file is part of GpgFrontend.
+#
+# GpgFrontend 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 of the License, or
+# (at your option) any later version.
+#
+# GpgFrontend 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 GpgFrontend. If not, see <https://www.gnu.org/licenses/>.
+#
+# The initial version of the source code is inherited from
+# the gpg4usb project, which is under GPL-3.0-or-later.
+#
+# All the source code of GpgFrontend was modified and released by
+# Saturneric <[email protected]> starting on May 12, 2021.
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+
 SET (CMAKE_C_FLAGS               "-Wall -std=c11")
 SET (CMAKE_C_FLAGS_DEBUG         "-g")
 SET (CMAKE_C_FLAGS_MINSIZERE     "-Os -DNDEBUG")