change licencing to LGPL-2.1-or-later

It appears that it is not permitted to put GPL-2.0-only code into
LGPL-3.0-or-later code.

https://www.gnu.org/licenses/gpl-faq.en.html#AllCompatibility

Unfortunately, one of UAPI headers of Linux kernel
(include/sound/firewire.h) is included in libhitaki for backporting,
and it is licensed under GPL-2.0-only. The last change of the header is
for v6.3 kernel, therefore it seems to be preferable to keep it for a
while.

It is granted to put GPL-2.0-only code into LGPL-2.1-or-later code. This
commit relicenses libhitaki itself under LGPL-2.1-or-later.

Signed-off-by: Takashi Sakamoto <[email protected]>

README.rst

@@ -2,7 +2,7 @@
 The libhitaki project
 =====================
 
-2023/03/14
+2024/02/16
 Takashi Sakamoto
 
 Introduction
@@ -23,7 +23,7 @@ The latest release is `0.2.0 <https://github.com/alsa-project/libhitaki/tags/v0.
 License
 =======
 
-Released under GNU Lesser General Public License version 3 or later, including UAPI header of ALSA
+Released under GNU Lesser General Public License version 2.1 or later, including UAPI header of ALSA
 firewire stack released under GNU General Public License version 2.0.
 
 Repository

doc/hitaki.toml.in

@@ -2,7 +2,7 @@
 version = "@VERSION@"
 description = "The library to operate ALSA HwDep character device for Audio and Music unit in IEEE 1394 bus"
 authors = "Takashi Sakamoto"
-license = "LGPL-3.0-or-later"
+license = "LGPL-2.1-or-later"
 website_url = "https://alsa-project.github.io/gobject-introspection-docs/hitaki/"
 docs_url = "https://alsa-project.github.io/gobject-introspection-docs/hitaki/"
 browse_url = "https://github.com/alsa-project/libhitaki/"

meson.build

@@ -1,6 +1,6 @@
 project('hitaki', 'c',
   version: '0.2.0',
-  license: 'LGPL-3.0-or-later',
+  license: 'LGPL-2.1-or-later',
   meson_version: '>= 0.46.0',
 )
 

src/alsa_firewire.c

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: LGPL-3.0-or-later
+// SPDX-License-Identifier: LGPL-2.1-or-later
 #include "alsa_firewire_private.h"
 
 /**

src/alsa_firewire.h

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: LGPL-3.0-or-later
+// SPDX-License-Identifier: LGPL-2.1-or-later
 #ifndef __HITAKI_ALSA_FIREWIRE_H__
 #define __HITAKI_ALSA_FIREWIRE_H__
 

src/alsa_firewire_private.c

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: LGPL-3.0-or-later
+// SPDX-License-Identifier: LGPL-2.1-or-later
 #include "alsa_firewire_private.h"
 
 #include <sys/types.h>

src/alsa_firewire_private.h

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: LGPL-3.0-or-later
+// SPDX-License-Identifier: LGPL-2.1-or-later
 #ifndef __HITAKI_ALSA_FIREWIRE_PRIVATE_H__
 #define __HITAKI_ALSA_FIREWIRE_PRIVATE_H__
 

src/efw_protocol.c

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: LGPL-3.0-or-later
+// SPDX-License-Identifier: LGPL-2.1-or-later
 #include "efw_protocol_private.h"
 
 #include <sound/firewire.h>

src/efw_protocol.h

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: LGPL-3.0-or-later
+// SPDX-License-Identifier: LGPL-2.1-or-later
 #ifndef __HITAKI_EFW_PROTOCOL_H__
 #define __HITAKI_EFW_PROTOCOL_H__
 

src/efw_protocol_private.h

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: LGPL-3.0-or-later
+// SPDX-License-Identifier: LGPL-2.1-or-later
 #ifndef __HITAKI_EFW_PROTOCOL_PRIVATE_H__
 #define __HITAKI_EFW_PROTOCOL_PRIVATE_H__
 

src/hitaki.h

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: LGPL-3.0-or-later
+// SPDX-License-Identifier: LGPL-2.1-or-later
 #ifndef __HITAKI_H__
 #define __HITAKI_H__
 

src/hitaki_enum_types.h

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: LGPL-3.0-or-later
+// SPDX-License-Identifier: LGPL-2.1-or-later
 #ifndef __HITAKI_ENUM_TYPES_H__
 #define __HITAKI_ENUM_TYPES_H__
 

src/motu_command_dsp.c

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: LGPL-3.0-or-later
+// SPDX-License-Identifier: LGPL-2.1-or-later
 #include "motu_command_dsp.h"
 
 /**

src/motu_command_dsp.h

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: LGPL-3.0-or-later
+// SPDX-License-Identifier: LGPL-2.1-or-later
 #ifndef __HITAKI_MOTU_COMMAND_DSP_H__
 #define __HITAKI_MOTU_COMMAND_DSP_H__
 

src/motu_register_dsp.c

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: LGPL-3.0-or-later
+// SPDX-License-Identifier: LGPL-2.1-or-later
 #include "motu_register_dsp.h"
 
 /**

src/motu_register_dsp.h

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: LGPL-3.0-or-later
+// SPDX-License-Identifier: LGPL-2.1-or-later
 #ifndef __HITAKI_MOTU_REGISTER_DSP_H__
 #define __HITAKI_MOTU_REGISTER_DSP_H__
 

src/quadlet_notification.c

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: LGPL-3.0-or-later
+// SPDX-License-Identifier: LGPL-2.1-or-later
 #include "quadlet_notification.h"
 
 /**

src/quadlet_notification.h

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: LGPL-3.0-or-later
+// SPDX-License-Identifier: LGPL-2.1-or-later
 #ifndef __HITAKI_QUADLET_NOTIFICATION_H__
 #define __HITAKI_QUADLET_NOTIFICATION_H__
 

src/snd_dice.c

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: LGPL-3.0-or-later
+// SPDX-License-Identifier: LGPL-2.1-or-later
 #include "alsa_firewire_private.h"
 
 /**

src/snd_dice.h

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: LGPL-3.0-or-later
+// SPDX-License-Identifier: LGPL-2.1-or-later
 #ifndef __HITAKI_SND_DICE_H__
 #define __HITAKI_SND_DICE_H__
 

src/snd_digi00x.c

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: LGPL-3.0-or-later
+// SPDX-License-Identifier: LGPL-2.1-or-later
 #include "alsa_firewire_private.h"
 
 /**

src/snd_digi00x.h

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: LGPL-3.0-or-later
+// SPDX-License-Identifier: LGPL-2.1-or-later
 #ifndef __HITAKI_SND_DIGI00X_H__
 #define __HITAKI_SND_DIGI00X_H__
 

src/snd_efw.c

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: LGPL-3.0-or-later
+// SPDX-License-Identifier: LGPL-2.1-or-later
 #include "alsa_firewire_private.h"
 #include "efw_protocol_private.h"
 

src/snd_efw.h

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: LGPL-3.0-or-later
+// SPDX-License-Identifier: LGPL-2.1-or-later
 #ifndef __HITAKI_SND_EFW_H__
 #define __HITAKI_SND_EFW_H__
 

src/snd_fireface.c

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: LGPL-3.0-or-later
+// SPDX-License-Identifier: LGPL-2.1-or-later
 #include "alsa_firewire_private.h"
 
 /**

src/snd_fireface.h

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: LGPL-3.0-or-later
+// SPDX-License-Identifier: LGPL-2.1-or-later
 #ifndef __HITAKI_SND_FIREFACE_H__
 #define __HITAKI_SND_FIREFACE_H__
 

src/snd_motu.c

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: LGPL-3.0-or-later
+// SPDX-License-Identifier: LGPL-2.1-or-later
 #include "alsa_firewire_private.h"
 
 /**

src/snd_motu.h

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: LGPL-3.0-or-later
+// SPDX-License-Identifier: LGPL-2.1-or-later
 #ifndef __HITAKI_SND_MOTU_H__
 #define __HITAKI_SND_MOTU_H__
 

src/snd_motu_register_dsp_parameter.c

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: LGPL-3.0-or-later
+// SPDX-License-Identifier: LGPL-2.1-or-later
 #include "alsa_firewire_private.h"
 
 /**

src/snd_motu_register_dsp_parameter.h

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: LGPL-3.0-or-later
+// SPDX-License-Identifier: LGPL-2.1-or-later
 #ifndef __HITAKI_SND_MOTU_REGISTER_DSP_PARAMETER_H__
 #define __HITAKI_SND_MOTU_REGISTER_DSP_PARAMETER_H__
 

src/snd_tascam.c

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: LGPL-3.0-or-later
+// SPDX-License-Identifier: LGPL-2.1-or-later
 #include "alsa_firewire_private.h"
 #include "tascam_protocol.h"
 

src/snd_tascam.h

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: LGPL-3.0-or-later
+// SPDX-License-Identifier: LGPL-2.1-or-later
 #ifndef __HITAKI_SND_TASCAM_H__
 #define __HITAKI_SND_TASCAM_H__
 

src/snd_unit.c

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: LGPL-3.0-or-later
+// SPDX-License-Identifier: LGPL-2.1-or-later
 #include "alsa_firewire_private.h"
 
 /**

src/snd_unit.h

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: LGPL-3.0-or-later
+// SPDX-License-Identifier: LGPL-2.1-or-later
 #ifndef __HITAKI_SND_UNIT_H__
 #define __HITAKI_SND_UNIT_H__
 

src/tascam_protocol.c

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: LGPL-3.0-or-later
+// SPDX-License-Identifier: LGPL-2.1-or-later
 #include "tascam_protocol.h"
 
 /**

src/tascam_protocol.h

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: LGPL-3.0-or-later
+// SPDX-License-Identifier: LGPL-2.1-or-later
 #ifndef __HITAKI_TASCAM_PROTOCOL_H__
 #define __HITAKI_TASCAM_PROTOCOL_H__
 

src/timestamped_quadlet_notification.c

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: LGPL-3.0-or-later
+// SPDX-License-Identifier: LGPL-2.1-or-later
 #include "timestamped_quadlet_notification.h"
 
 /**

src/timestamped_quadlet_notification.h

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: LGPL-3.0-or-later
+// SPDX-License-Identifier: LGPL-2.1-or-later
 #ifndef __HITAKI_TIMESTAMPED_QUADLET_NOTIFICATION_H__
 #define __HITAKI_TIMESTAMPED_QUADLET_NOTIFICATION_H__