NSCCN/perl-compress-raw-bzip2：Perl语言中用于处理bzip2压缩数据的底层接口库

                        Compress-Raw-Bzip2

                          Version 2.218

                           8 March 2026

    Copyright (c) 2005-2026 Paul Marquess. All rights reserved.
      This program is free software; you can redistribute it
       and/or modify it under the same terms as Perl itself.

         The directory bzip2-src contains a subset of the
      source files copied directly from bzip2 version 1.0.8.
       These files are Copyright(C) 1996-2019 Julian Seward.
See the file bzip2-src/LICENSE for licence details for these files.
         Full source for the bzip2 library is available at
                   https://sourceware.org/bzip2/

      Note that some of the bzip2 source files have been modified
               to allow them to build with a C++ compiler
                   and/or silence compiler warnings.
           The file bzip2-src/bzip2.patch contains the patch
              that was used to modify the original source.

DESCRIPTION

Compress-Raw-Bzip2 provides the interface to the bzip2 library for the modules IO::Compress::Bzip2 and IO::Compress::Bunzip2.

PREREQUISITES

Before you can build Compress-Raw-Bzip2 you need to have the following installed on your system:

* A C compiler

* Perl 5.006 or better.

BUILDING THE MODULE

Assuming you have met all the prerequisites, the module can now be built using this sequence of commands:

perl Makefile.PL
make
make test

INSTALLATION

To install Compress-Raw-Bzip2, run the command below:

make install

TROUBLESHOOTING

Solaris build fails with “language optional software package not installed”

If you are trying to build this module under Solaris and you get an error message like this

/usr/ucb/cc: language optional software package not installed

it means that Perl cannot find the C compiler on your system. The cryptic message is just Sun’s way of telling you that you haven’t bought their C compiler.

When you build a Perl module that needs a C compiler, the Perl build system tries to use the same C compiler that was used to build perl itself. In this case your Perl binary was built with a C compiler that lived in /usr/ucb.

To continue with building this module, you need to get a C compiler, or tell Perl where your C compiler is, if you already have one.

Assuming you have now got a C compiler, what you do next will be dependent on what C compiler you have installed. If you have just installed Sun’s C compiler, you shouldn’t have to do anything. Just try rebuilding this module.

If you have installed another C compiler, say gcc, you have to tell perl how to use it instead of /usr/ucb/cc.

This set of options seems to work if you want to use gcc. Your mileage may vary.

perl Makefile.PL CC=gcc CCCDLFLAGS=-fPIC OPTIMIZE=" "
make test

If that doesn’t work for you, it’s time to make changes to the Makefile by hand. Good luck!

Solaris build fails with “gcc: unrecognized option `-KPIC’”

You are running Solaris and you get an error like this when you try to build this Perl module

gcc: unrecognized option `-KPIC'

This symptom usually means that you are using a Perl binary that has been built with the Sun C compiler, but you are using gcc to build this module.

When Perl builds modules that need a C compiler, it will attempt to use the same C compiler and command line options that was used to build perl itself. In this case “-KPIC” is a valid option for the Sun C compiler, but not for gcc. The equivalent option for gcc is “-fPIC”.

The solution is either:

1. Build both Perl and this module with the same C compiler, either
   by using the Sun C compiler for both or gcc for both.

2. Try generating the Makefile for this module like this perl

       perl Makefile.PL CC=gcc CCCDLFLAGS=-fPIC OPTIMIZE=" " LD=gcc
       make test

   This second option seems to work when mixing a Perl binary built
   with the Sun C compiler and this module built with gcc. Your
   mileage may vary.

HP-UX Notes

I’ve had a report that when building Compress-Raw-Bzip2 under HP-UX that it is necessary to have first built the bzip2 library with the -fpic option.

SUPPORT

General feedback/questions/bug reports should be sent to https://github.com/pmqs/Compress-Raw-Bzip2/issues

FEEDBACK

How to report a problem with Compress-Raw-Bzip2.

To help me help you, I need all of the following information:

The Versions of everything relevant. This includes:

a. The complete output from running this

    perl -V

Do not edit the output in any way.
Note, I want you to run "perl -V" and NOT "perl -v".

If your perl does not understand the "-V" option it is too
old. This module needs Perl version 5.004 or better.

b. The version of Compress-Raw-Bzip2 you have.

If you have successfully installed Compress-Raw-Bzip2, this one-liner
will tell you:

   perl -MCompress::Raw::Bzip2 -e 'print qq[ver $Compress::Raw::Bzip2::VERSION\n]'

If you are  running windows use this

   perl -MCompress::Raw::Bzip2 -e "print qq[ver $Compress::Raw::Bzip2::VERSION\n]"

If you haven't installed Compress-Raw-Bzip2 then search Compress::Raw::Bzip2.pm
for a line like this:

  $VERSION = "2.218" ;

c. The version of bzip2 you have used.

If you have successfully installed Compress-Raw-Bzip2, this one-liner
will tell you:

  perl -MCompress::Raw::Bzip2 -e "print q[bzip2 ver ]. Compress::Raw::Bzip2::ZLIB_VERSION.qq[\n]"

If not, look at the beginning of the file zlib.h.

If you are having problems building Compress-Raw-Bzip2, send me a complete log of what happened. Start by unpacking the Compress-Raw-Bzip2 module into a fresh directory and keep a log of all the steps, including the setting of configuration environment variables (if applicable).
```
[edit config.in or set environment variables, if necessary]
perl Makefile.PL
make
make test TEST_VERBOSE=1
```

Paul Marquess pmqs@cpan.org