we don't use 'xz' binary directly

use $(AUTOCONF) to make pkg-config, add dependancy on autoconf

Signed-off-by: Rafaël Carré <funman@videolan.org>

This makes sure our build of tar (if it exists) is used before system tar

We need -arch to specify which arch to be built, else we have no idea

Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

This also prevents VLC to abort at exit.
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

Removing useless destructor & using initialization list.
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

Feel free to improve/add rationale

This reverts commit 08b3a966.

Patch was merged in libav and ffmpeg

Use this as the default
Specify which framework to use by using OSX_VERSION=10.6

It's only available since XCode4 on MacOSX 10.6