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| -rw-r--r-- | src/include/compiler.h | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/src/include/compiler.h b/src/include/compiler.h index d23c1672..7c1aa1f4 100644 --- a/src/include/compiler.h +++ b/src/include/compiler.h @@ -408,6 +408,107 @@ int __debug_disable; #define barrier() __asm__ __volatile__ ( "" : : : "memory" ) #endif /* ASSEMBLY */ +/** + * @defgroup licences Licence declarations + * + * For reasons that are partly historical, various different files + * within the gPXE codebase have differing licences. + * + * @{ + */ + +/** Declare a file as being in the public domain + * + * This licence declaration is applicable when a file states itself to + * be in the public domain. + */ +#define FILE_LICENCE_PUBLIC_DOMAIN \ + PROVIDE_SYMBOL ( __licence_public_domain ) + +/** Declare a file as being under version 2 (or later) of the GNU GPL + * + * This licence declaration is applicable when a file states itself to + * be licensed under the GNU GPL; "either version 2 of the License, or + * (at your option) any later version". + */ +#define FILE_LICENCE_GPL2_OR_LATER \ + PROVIDE_SYMBOL ( __licence_gpl2_or_later ) + +/** Declare a file as being under version 2 of the GNU GPL + * + * This licence declaration is applicable when a file states itself to + * be licensed under version 2 of the GPL, and does not include the + * "or, at your option, any later version" clause. + */ +#define FILE_LICENCE_GPL2_ONLY \ + PROVIDE_SYMBOL ( __licence_gpl2_only ) + +/** Declare a file as being under any version of the GNU GPL + * + * This licence declaration is applicable when a file states itself to + * be licensed under the GPL, but does not specify a version. + * + * According to section 9 of the GPLv2, "If the Program does not + * specify a version number of this License, you may choose any + * version ever published by the Free Software Foundation". + */ +#define FILE_LICENCE_GPL_ANY \ + PROVIDE_SYMBOL ( __licence_gpl_any ) + +/** Declare a file as being under the three-clause BSD licence + * + * This licence declaration is applicable when a file states itself to + * be licensed under terms allowing redistribution in source and + * binary forms (with or without modification) provided that: + * + * redistributions of source code retain the copyright notice, + * list of conditions and any attached disclaimers + * + * redistributions in binary form reproduce the copyright notice, + * list of conditions and any attached disclaimers in the + * documentation and/or other materials provided with the + * distribution + * + * the name of the author is not used to endorse or promote + * products derived from the software without specific prior + * written permission + * + * It is not necessary for the file to explicitly state that it is + * under a "BSD" licence; only that the licensing terms be + * functionally equivalent to the standard three-clause BSD licence. + */ +#define FILE_LICENCE_BSD3 \ + PROVIDE_SYMBOL ( __licence_bsd3 ) + +/** Declare a file as being under the two-clause BSD licence + * + * This licence declaration is applicable when a file states itself to + * be licensed under terms allowing redistribution in source and + * binary forms (with or without modification) provided that: + * + * redistributions of source code retain the copyright notice, + * list of conditions and any attached disclaimers + * + * redistributions in binary form reproduce the copyright notice, + * list of conditions and any attached disclaimers in the + * documentation and/or other materials provided with the + * distribution + * + * It is not necessary for the file to explicitly state that it is + * under a "BSD" licence; only that the licensing terms be + * functionally equivalent to the standard two-clause BSD licence. + */ +#define FILE_LICENCE_BSD2 \ + PROVIDE_SYMBOL ( __licence_bsd2 ) + +/** Declare a particular licence as applying to a file */ +#define FILE_LICENCE( _licence ) FILE_LICENCE_ ## _licence + +/** @} */ + +/* This file itself is under GPLv2-or-later */ +FILE_LICENCE ( GPL2_OR_LATER ); + #include <bits/compiler.h> #endif /* COMPILER_H */ |