Introduce SPDX license identifiers

This replaces the lengthy license text headers with a short
and standardized license tag. See http://spdx.org for details.

This is useful e.g. for license compliance tools which scan
through files and generate a report of the licenses used
in a project.

Signed-off-by: Michael Heimpold <mhei@heimpold.de>

src/modbus-data.c

@@ -1,19 +1,7 @@
 /*
  * Copyright © 2010-2011 Stéphane Raimbault <stephane.raimbault@gmail.com>
  *
- * 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 2.1 of the License, 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
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ * SPDX-License-Identifier: LGPL-2.1+
  */
 
 #include <stdlib.h>

src/modbus-private.h

@@ -1,19 +1,7 @@
 /*
  * Copyright © 2010-2012 Stéphane Raimbault <stephane.raimbault@gmail.com>
  *
- * 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 2.1 of the License, 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
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ * SPDX-License-Identifier: LGPL-2.1+
  */
 
 #ifndef MODBUS_PRIVATE_H

src/modbus-rtu-private.h

@@ -1,19 +1,7 @@
 /*
  * Copyright © 2001-2011 Stéphane Raimbault <stephane.raimbault@gmail.com>
  *
- * 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 2.1 of the License, 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
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ * SPDX-License-Identifier: LGPL-2.1+
  */
 
 #ifndef MODBUS_RTU_PRIVATE_H

src/modbus-rtu.c

@@ -1,19 +1,7 @@
 /*
  * Copyright © 2001-2011 Stéphane Raimbault <stephane.raimbault@gmail.com>
  *
- * 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 2.1 of the License, 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
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ * SPDX-License-Identifier: LGPL-2.1+
  */
 
 #include <stdio.h>

src/modbus-rtu.h

@@ -1,19 +1,7 @@
 /*
  * Copyright © 2001-2011 Stéphane Raimbault <stephane.raimbault@gmail.com>
  *
- * 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 2.1 of the License, 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
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ * SPDX-License-Identifier: LGPL-2.1+
  */
 
 #ifndef MODBUS_RTU_H

src/modbus-tcp-private.h

@@ -1,19 +1,7 @@
 /*
  * Copyright © 2001-2011 Stéphane Raimbault <stephane.raimbault@gmail.com>
  *
- * 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 2.1 of the License, 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
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ * SPDX-License-Identifier: LGPL-2.1+
  */
 
 #ifndef MODBUS_TCP_PRIVATE_H

src/modbus-tcp.c

@@ -1,19 +1,7 @@
 /*
  * Copyright © 2001-2013 Stéphane Raimbault <stephane.raimbault@gmail.com>
  *
- * 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 2.1 of the License, 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
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ * SPDX-License-Identifier: LGPL-2.1+
  */
 
 #include <stdio.h>

src/modbus-tcp.h

@@ -1,19 +1,7 @@
 /*
  * Copyright © 2001-2010 Stéphane Raimbault <stephane.raimbault@gmail.com>
  *
- * 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 2.1 of the License, 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
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ * SPDX-License-Identifier: LGPL-2.1+
  */
 
 #ifndef MODBUS_TCP_H

src/modbus.c

@@ -1,20 +1,7 @@
 /*
  * Copyright © 2001-2011 Stéphane Raimbault <stephane.raimbault@gmail.com>
  *
- * 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 2.1 of the License, 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
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
+ * SPDX-License-Identifier: LGPL-2.1+
  *
  * This library implements the Modbus protocol.
  * http://libmodbus.org/

src/modbus.h

@@ -1,19 +1,7 @@
 /*
  * Copyright © 2001-2013 Stéphane Raimbault <stephane.raimbault@gmail.com>
  *
- * 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 2.1 of the License, 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
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ * SPDX-License-Identifier: LGPL-2.1+
  */
 
 #ifndef MODBUS_H

tests/bandwidth-client.c

@@ -1,8 +1,7 @@
 /*
  * Copyright © 2008-2014 Stéphane Raimbault <stephane.raimbault@gmail.com>
  *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the BSD License.
+ * SPDX-License-Identifier: BSD-3-Clause
  */
 
 #include <stdio.h>

tests/bandwidth-server-many-up.c

@@ -1,8 +1,7 @@
 /*
  * Copyright © 2008-2014 Stéphane Raimbault <stephane.raimbault@gmail.com>
  *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the BSD License.
+ * SPDX-License-Identifier: BSD-3-Clause
  */
 
 #include <stdio.h>

tests/bandwidth-server-one.c

@@ -1,8 +1,7 @@
 /*
  * Copyright © 2008-2014 Stéphane Raimbault <stephane.raimbault@gmail.com>
  *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the BSD License.
+ * SPDX-License-Identifier: BSD-3-Clause
  */
 
 #include <stdio.h>

tests/random-test-client.c

@@ -1,8 +1,7 @@
 /*
  * Copyright © 2008-2014 Stéphane Raimbault <stephane.raimbault@gmail.com>
  *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the BSD License.
+ * SPDX-License-Identifier: BSD-3-Clause
  */
 
 #include <stdio.h>

tests/random-test-server.c

@@ -1,8 +1,7 @@
 /*
  * Copyright © 2008-2014 Stéphane Raimbault <stephane.raimbault@gmail.com>
  *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the BSD License.
+ * SPDX-License-Identifier: BSD-3-Clause
  */
 
 #include <stdio.h>

tests/unit-test-client.c

@@ -1,8 +1,7 @@
 /*
  * Copyright © 2008-2014 Stéphane Raimbault <stephane.raimbault@gmail.com>
  *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the BSD License.
+ * SPDX-License-Identifier: BSD-3-Clause
  */
 
 #include <stdio.h>

tests/unit-test-server.c

@@ -1,8 +1,7 @@
 /*
  * Copyright © 2008-2014 Stéphane Raimbault <stephane.raimbault@gmail.com>
  *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the BSD License.
+ * SPDX-License-Identifier: BSD-3-Clause
  */
 
 #include <stdio.h>

tests/unit-test.h.in

@@ -1,8 +1,7 @@
 /*
  * Copyright © 2008-2014 Stéphane Raimbault <stephane.raimbault@gmail.com>
  *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the BSD License.
+ * SPDX-License-Identifier: BSD-3-Clause
  */
 
 #ifndef _UNIT_TEST_H_

tests/version.c

@@ -1,8 +1,7 @@
 /*
  * Copyright © 2008-2014 Stéphane Raimbault <stephane.raimbault@gmail.com>
  *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the BSD License.
+ * SPDX-License-Identifier: BSD-3-Clause
  */
 
 #include <stdio.h>