[Bug 615357] [macosx] Handle multi-arch plugin-scanner

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=615357
  GStreamer | gstreamer (core) | git

--- Comment #27 from Daniel Macks <dmacks at netspace.org> 2011-04-11 19:40:51 UTC ---
/usr/bin/arch has always existed on OS X, but on older 10.x it merely reports
arch data and cannot be used as a wrapper to set the arch. Hardcoding its use
here limits backward portability (either to compile, or to build on new that is
still usable on old). I think it changed to the wrapper behavior as of 10.5, so
certainly reasonable to abandon the ancient 10.4 and earlier, but might want to
document this limitation. On 10.4, there wasn't really the same idea of
multiarch (each CPU did not have multiple modes), so could maybe have runtime
check for kernel version to control whether to use the wrapper.

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