[Ffmpeg-devel] [PATCH] Don't use --as-needed for every operating system

[Diego 'Flameeyes' Pettenò]

As per summary, --as-needed LDFLAG cannot be used safely for every operating 
system.

Currently gcc (that is the first user of it) consider it working only for 
Linux, because on at least FreeBSD and DragonFly it's not usable (by design).

The reason is that -pthread for libraries is a no-op, while on final 
executables it brings in -lpthread, even if it does not resolve local 
unresolved symbols, to link the libraries using pthreads themselves. 
With --as-needed, the final link to libpthread is then discarded, resulting 
in unusable libav* libraries.

HTH,
-- 
Diego "Flameeyes" Petten? - http://farragut.flameeyes.is-a-geek.org/
Gentoo/Alt lead, Gentoo/FreeBSD, Video, Sound, ALSA, PAM, KDE, CJK, Ruby ...
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