This is a port of Cross-platform Audio Library 1.2.0 to MSDOS/DJGPP.

  Libao is a cross-platform audio library that allows programs to output
  audio using a simple API on a wide variety of platforms.  It currently
  supports:
     * Null output
     * WAV files
     * OSS (Open Sound System)
     * ESD (ESounD or Enlightened Sound Daemon)
     * ALSA (Advanced Linux Sound Architecture)
     * PulseAudio (next generation GNOME sound server)
     * AIX
     * Solaris (untested)
     * IRIX (untested)



1.:     DJGPP specific changes.
        =======================

      - This port has been configured to be build in the "0build" directory.
      - The port has been configured and compiled on WinXP SP3, Win98SE and
        MSDOS 6.22 and DOSLFN v0.41f.  There is absolute no guarantee that
        this may be possible with any other DOS-like OS.  Due to the use of
        long file names it will not be possible to configure and compile
        without LFN support.
      - The following backends are supported by the port:
          file output: AU, RAW and WAV
          live output: NULL
      - The port expects "/dev/env/DJDIR/etc/libao.conf" as the system wide
        config file and the user specific one either as ".libao" or "_libao"
        in the HOME directory.  If the HOME environment variable is not set
        then the current working directory is used to find the config file.
      - The reading/writing stream is switched into O_BINARY mode.  If the
        stream is connected to stdin/stdout/TTY, then Ctrl-C and Ctrl-Break
        are re-enabled so the user can interrupt the program.
      - This version of the port has been compiled using gcc346 and bnu2351b.

        As usual, all djgpp specific files (config.bat, diffs, readme files,
        etc.) are located in the djgpp subdir.

        For further information about the Cross-platform Audio Library please
        read the info docs and NEWS file.


2.:     Installing the binary package.
        ==============================

2.1.:   Copy the binary distribution into the top DJGPP installation directory
        and unzip it running *ONE* of the following commands:
          unzip32 lao120b.zip      or
          djtarx lao120b.zip       or
          pkunzip -d lao120b.zip


3.:     Building the binaries from sources.
        ===================================

3.1.:   Create a temporary directory and copy the source package into the
        directory.  If you download the source distribution from one of the
        DJGPP sites, just unzip it preserving the directory structure
        running *ONE* of the following commands:
          unzip32 lao120s.zip      or
          djtarx lao120s.zip       or
          pkunzip -d lao120s.zip

3.2.:   To build the binaries you will need the following binary packages:
          djdev205.zip (or a later but NOT a prior version)
          bsh4253b.zip (or a later but NOT a prior version)
          gccNNNb.zip, bnuNNNb.zip, makNNNb.zip, filNNNb.zip, shlNNNb.zip,
          txtNNNb.zip, txiNNNb.zip, grepNNNb.zip, sedNNNb.zip, mktmpNNb.zip,
          difNNNb.zip and pkcNNNb.

        NNN represents the latest version number of the binary packages.  All
        this packages can be found in the /v2gnu directory of any
        ftp.delorie.com mirror.
        You will need bsh4253b.zip or later and *NOT* a prior version or
        the build will fail.  The same applies to djdev205.zip.

3.3.:   The package has been configured to be build in a separate build directory
        under the top srcdir (aka libao-1.2.0).  To build the binaries cd
        into "0build" directory.  If for some reason you want to reconfigure the
        package cd into the build directory and run the following commands:
          del config.cache
          make clean
          ..\djgpp\config ./..

        Please note that you _must_ delete the config.cache file in the "0build"
        directory or you will not really reconfigure the sources because the
        configuration informations will be read from the cache file instead
        of being newly computed.

        config.bat, among other things, will start the configure script passing
        to it a couple of arguments.  You can control these argument passing the
        following command line arguments to config.bat:
          cache or no-cache, default cache.  Cache in build directory.
          dep or no-dep, default no-dep.  No dependency tracking.
          silent or no-silent, default silent.  Controls the verbosity of the
                                                build process.
        All other configure specific options are not set by config.bat so their
        values are left as they are.  If no arguments are passed to config.bat
        then the default values are used.

        To build the programs in a directory other than where the sources are,
        you must add the parameter that specifies the source directory,
        e.g:
          x:\src\contrib\libao-1.2.0\djgpp\config x:/src/contrib/libao-1.2.0

        Lets assume you want to build the binaries in a directory placed on a
        different drive (z:\build in this case) from where the sources are,
        then you will run the following commands:
          z:
          md \build
          cd \build
          x:\src\contrib\libao-1.2.0\djgpp\config x:/src/contrib/libao-1.2.0

        The order of the options and the srcdir option does not matter.  You
        _must_ use forward slashes to specify the source directory.

        The batch file will set same environment variables, make MSDOS specific
        modifications to the Makefile.in's and supply all other needed options
        to the configure script.

3.4.:   To compile the package run from the directory where you have configured
        the sources the command:
          make

3.5.:   Now you can run the tests if you like. From the directory where you have
        configured the sources run the command:
          make check

3.6.:   To install the binary, info docs and man pages run the following command
        from the directory where you have configured the sources:
          make install

        This will install the products into your DJGPP installation tree given
        by the default prefix "/dev/env/DJDIR".  If you prefer to install them
        into some other directory you will have to set prefix to the appropriate
        value:
          make install prefix=z:/some/other/place



        Send Cross-platform Audio Library specific bug reports to
        <https://gitlab.xiph.org/xiph/libao/activity/>.
        Send suggestions and bug reports concerning the DJGPP port
        to comp.os.msdos.djgpp or <djgpp@delorie.com>.


Enjoy.

          Guerrero, Juan Manuel <juan.guerrero@gmx.de>
