Add TLS detection m4 macro
[urcu.git] / LICENSE
1 Userspace RCU library licensing
2 Mathieu Desnoyers
3 May 15, 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 details. This applies to :
10
11 urcu.h
12 urcu.c
13 urcu-static.h
14 arch_x86.h
15 arch_ppc.h
16
17 LGPL-compatible source code can statically use the library header using :
18
19 #define _LGPL_SOURCE
20 #include <urcu.h>
21
22 Dynamic-only linking with the LGPL library is used if _LGPL_SOURCE is not
23 defined. It permits relinking with newer versions of the library, which is
24 required by the LGPL license.
25
26 See lgpl-relicensing.txt for details.
27
28
29 * MIT-style license :
30
31 xchg() primitive has been rewritten from scratch starting from atomic_ops 1.2
32 which has a MIT-style license that is intended to allow use in both free and
33 proprietary software:
34 http://www.hpl.hp.com/research/linux/atomic_ops/LICENSING.txt
35 http://www.hpl.hp.com/personal/Hans_Boehm/gc/gc_source/
36
37 This license applies to :
38
39 arch_atomic_x86.h
40 arch_atomic_ppc.h
41 arch_atomic_s390.h
42 arch_s390.h
43 compiler.h
44
45
46 * GPLv2
47
48 Library test code is distributed under the GPLv2 license. See gpl-2.0.txt for
49 details. This applies to :
50
51 urcutorture.h
52 urcutorture.c
53 api_x86.h
54 api_ppc.h
55 api_gcc.h
56 test_urcu.c
57 test_urcu_yield.c
58 test_rwlock_timing.c
59 urcu-asm.c
60
61 * GPLv3 (or later)
62
63 The following build-related macro is under GPLv3 (or later):
64
65 m4/ax_tls.m4
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