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1 | ------------------------------------------------------------------ | ||
2 | This file is part of bzip2/libbzip2, a program and library for | ||
3 | lossless, block-sorting data compression. | ||
4 | |||
5 | bzip2/libbzip2 version 1.0.6 of 6 September 2010 | ||
6 | Copyright (C) 1996-2010 Julian Seward <jseward@bzip.org> | ||
7 | |||
8 | Please read the WARNING, DISCLAIMER and PATENTS sections in the | ||
9 | README file. | ||
10 | |||
11 | This program is released under the terms of the license contained | ||
12 | in the file LICENSE. | ||
13 | ------------------------------------------------------------------ | ||
14 | |||
15 | bzip2-1.0.6 should compile without problems on the vast majority of | ||
16 | platforms. Using the supplied Makefile, I've built and tested it | ||
17 | myself for x86-linux and amd64-linux. With makefile.msc, Visual C++ | ||
18 | 6.0 and nmake, you can build a native Win32 version too. Large file | ||
19 | support seems to work correctly on at least on amd64-linux. | ||
20 | |||
21 | When I say "large file" I mean a file of size 2,147,483,648 (2^31) | ||
22 | bytes or above. Many older OSs can't handle files above this size, | ||
23 | but many newer ones can. Large files are pretty huge -- most files | ||
24 | you'll encounter are not Large Files. | ||
25 | |||
26 | Early versions of bzip2 (0.1, 0.9.0, 0.9.5) compiled on a wide variety | ||
27 | of platforms without difficulty, and I hope this version will continue | ||
28 | in that tradition. However, in order to support large files, I've had | ||
29 | to include the define -D_FILE_OFFSET_BITS=64 in the Makefile. This | ||
30 | can cause problems. | ||
31 | |||
32 | The technique of adding -D_FILE_OFFSET_BITS=64 to get large file | ||
33 | support is, as far as I know, the Recommended Way to get correct large | ||
34 | file support. For more details, see the Large File Support | ||
35 | Specification, published by the Large File Summit, at | ||
36 | |||
37 | http://ftp.sas.com/standards/large.file | ||
38 | |||
39 | As a general comment, if you get compilation errors which you think | ||
40 | are related to large file support, try removing the above define from | ||
41 | the Makefile, ie, delete the line | ||
42 | |||
43 | BIGFILES=-D_FILE_OFFSET_BITS=64 | ||
44 | |||
45 | from the Makefile, and do 'make clean ; make'. This will give you a | ||
46 | version of bzip2 without large file support, which, for most | ||
47 | applications, is probably not a problem. | ||
48 | |||
49 | Alternatively, try some of the platform-specific hints listed below. | ||
50 | |||
51 | You can use the spewG.c program to generate huge files to test bzip2's | ||
52 | large file support, if you are feeling paranoid. Be aware though that | ||
53 | any compilation problems which affect bzip2 will also affect spewG.c, | ||
54 | alas. | ||
55 | |||
56 | AIX: I have reports that for large file support, you need to specify | ||
57 | -D_LARGE_FILES rather than -D_FILE_OFFSET_BITS=64. I have not tested | ||
58 | this myself. | ||