This repository is a clone of the Apple Lossless Audio Codec (ALAC) repository at http:https://alac.macosforge.org with added files to enable it to be built using GNU autotools. Use it to build and install the ALAC library libalac.

The added files are based on work done by Tiancheng "Timothy" Gu in his repository https://github.com/TimothyGu/alac with some changes. Many thanks to him for his work. This respository is bare-bones – for Visual Studio or Debian packaging support or for man pages, please go to Timothy's repository.

To download, build and install libalac do the following:

• Clone the repository and cd into the folder:

$ git clone https://github.com/mikebrady/alac.git
$ cd alac

• Configure the build and make the library:

$ autoreconf -fi
$ ./configure
$ make

The autoconfigure command may take a long time. You may get a warning which you can ignore:

aclocal: warning: couldn't open directory 'm4': No such file or directory

• Install the library:

# make install

• Finally, to make the library visible during compilation, you need to tell ld about it. Be careful here – if you are on FreeBSD, the Linux commands will mess up your system. On Linux, use the following command:

# ldconfig -v

On FreeBSD you must add the location of the alac.pc file to the PKG_CONFIG_PATH, if it exists, and define it otherwise. Here is what you do if it doesn't already exist:

$ PKG_CONFIG_PATH="/usr/local/lib/pkgconfig"
$ export PKG_CONFIG_PATH

That's it – the library can now be linked to via pkg-config: the module name is alac, thus:

PKG_CHECK_MODULES([ALAC], [alac], [LIBS="${ALAC_LIBS} ${LIBS}"])

should work. If you are using AC_CHECK_LIB, something like this will work:

AC_CHECK_LIB([alac], [BitBufferInit], , AC_MSG_ERROR(Apple ALAC Decoder support requires the alac library!))