59 lines
2.4 KiB
Plaintext
59 lines
2.4 KiB
Plaintext
------------------------------------------------------------------
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This file is part of bzip2/libbzip2, a program and library for
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lossless, block-sorting data compression.
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bzip2/libbzip2 version 1.0.8 of 13 July 2019
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Copyright (C) 1996-2019 Julian Seward <jseward@acm.org>
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Please read the WARNING, DISCLAIMER and PATENTS sections in the
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README file.
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This program is released under the terms of the license contained
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in the file LICENSE.
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------------------------------------------------------------------
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bzip2 should compile without problems on the vast majority of
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platforms. Using the supplied Makefile, I've built and tested it
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myself for x86-linux and amd64-linux. With makefile.msc, Visual C++
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6.0 and nmake, you can build a native Win32 version too. Large file
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support seems to work correctly on at least on amd64-linux.
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When I say "large file" I mean a file of size 2,147,483,648 (2^31)
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bytes or above. Many older OSs can't handle files above this size,
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but many newer ones can. Large files are pretty huge -- most files
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you'll encounter are not Large Files.
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Early versions of bzip2 (0.1, 0.9.0, 0.9.5) compiled on a wide variety
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of platforms without difficulty, and I hope this version will continue
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in that tradition. However, in order to support large files, I've had
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to include the define -D_FILE_OFFSET_BITS=64 in the Makefile. This
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can cause problems.
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The technique of adding -D_FILE_OFFSET_BITS=64 to get large file
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support is, as far as I know, the Recommended Way to get correct large
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file support. For more details, see the Large File Support
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Specification, published by the Large File Summit, at
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http://ftp.sas.com/standards/large.file
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As a general comment, if you get compilation errors which you think
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are related to large file support, try removing the above define from
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the Makefile, ie, delete the line
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BIGFILES=-D_FILE_OFFSET_BITS=64
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from the Makefile, and do 'make clean ; make'. This will give you a
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version of bzip2 without large file support, which, for most
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applications, is probably not a problem.
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Alternatively, try some of the platform-specific hints listed below.
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You can use the spewG.c program to generate huge files to test bzip2's
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large file support, if you are feeling paranoid. Be aware though that
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any compilation problems which affect bzip2 will also affect spewG.c,
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alas.
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AIX: I have reports that for large file support, you need to specify
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-D_LARGE_FILES rather than -D_FILE_OFFSET_BITS=64. I have not tested
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this myself.
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