LICENSE

   1 Userspace RCU library licensing
   2 Mathieu Desnoyers
   3 September 3, 2012
   4
   5
   6 * LGPLv2.1
   7
   8 The library part is distributed under LGPLv2.1 or later. See lgpl-2.1.txt for
   9 license details. Refer to the individual file headers for details.
  10
  11 LGPL-compatible source code can statically use the library header using :
  12
  13 #define _LGPL_SOURCE
  14 #include <urcu.h>
  15
  16 Dynamic-only linking with the LGPL library is used if _LGPL_SOURCE is not
  17 defined. It permits relinking with newer versions of the library, which is
  18 required by the LGPL license.
  19
  20 See lgpl-relicensing.txt for details.
  21
  22
  23 * MIT-style license :
  24
  25 xchg() primitive has been rewritten from scratch starting from atomic_ops 1.2
  26 which has a MIT-style license that is intended to allow use in both free and
  27 proprietary software:
  28         http://www.hpl.hp.com/research/linux/atomic_ops/LICENSING.txt
  29         http://www.hpl.hp.com/personal/Hans_Boehm/gc/gc_source/
  30
  31 This MIT-style license (BSD like) apply to:
  32
  33 uatomic/gcc.h
  34 uatomic/unknown.h
  35 uatomic/generic.h
  36 uatomic/sparc64.h
  37 uatomic/arm.h
  38 uatomic/ppc.h
  39 uatomic/x86.h
  40 uatomic.h
  41
  42 MIT/X11 (BSD like) license apply to:
  43
  44 compiler.h
  45 arch/s390.h
  46 uatomic/alpha.h
  47 uatomic/mips.h
  48 uatomic/s390.h
  49 system.h
  50
  51
  52 * GPLv2
  53
  54 Library test code is distributed under the GPLv2 license. See gpl-2.0.txt for
  55 license details. See headers of individual files under tests/ for details.
  56
  57
  58 * GPLv3 (or later)
  59
  60 The following build-related macro is under GPLv3 (or later):
  61
  62 m4/ax_tls.m4