Bug#852983: allegro4.4: please do not build-depend on oss4-dev on Linux

[Simon McVittie]

Source: allegro4.4
Version: 2:4.4.2-9
Severity: serious
Justification: release team consensus

allegro4.4 build-depends on oss4-dev, which is built by RC-buggy source
package oss4.

I discussed this with some release team members and their opinion is that
oss4 should only be used on non-Linux architectures: on Linux, we should be
using ALSA, either directly or via intermediaries like PulseAudio.
Please restrict the build-dependency to oss4-dev [kfreebsd-any] or possibly
oss4-dev [kfreebsd-any hurd-any], and set the CMake options so OSS is only
requested on those architectures, similar to what is done in
vlc (>= 2.2.0~pre3-1).

Regards,
    smcv
    helping the Cambridge BSP

-- System Information:
Debian Release: 9.0
  APT prefers unstable-debug
  APT policy: (500, 'unstable-debug'), (500, 'unstable'), (500, 'testing'), (500, 'stable'), (1, 'experimental-debug'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.9.0-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_GB.utf8, LC_CTYPE=en_GB.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)