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Date: Sat, 22 Jun 2024 09:29:17 +0900
To: cygwin@cygwin.com
Subject: Re: Analyze dependencies of a cygwin package
Message-Id: <20240622092917.43a848baf5e90159357efcfb@nifty.ne.jp>
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From: Takashi Yano via Cygwin <cygwin@cygwin.com>
Reply-To: Takashi Yano <takashi.yano@nifty.ne.jp>
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On Sat, 22 Jun 2024 07:22:42 +0900
Takashi Yano wrote:
> Hi Federico,
> 
> On Fri, 21 Jun 2024 19:35:32 +0200
> Federico Kircheis wrote:
> > After some investigation, it seems that ffmeg hash clang (which has gcc) 
>                                           ^^^^^^^^^^
> > as dependency in its chain.
> > 
> > I would consider it a bug, although not critical.
> 
> Do you mean "ffmpeg has clang as dependency"?
> That's right thing. ffmpeg depends on clang indirectly as follows.
> 
> ffmpeg depends on libavfilter10.
> libavfilter10 depends on libOpenCL1.
> libOpenCL1 depends on libpocl2.
> libpocl2 depends on clang.
> 
> pocl uses Clang as an OpenCL C frontend and LLVM for the kernel
> compiler implementation, and as a portability layer.

BTW, I looked into cmus.cygport of 2.11.0-2 and noticed that you
need to patch for configure to enable ffmpeg plugin as attached. 

With ffmpeg plugin, many of audio formats get supported by cmus.

Furthermore, you do not need to add ffmpeg to "REQUIRES" because
the cmus package itself does not really depend on ffmpeg package
even though it depends libavcodec, libavformat, libavutil and
libswresample.

Maybe, you do not have to add any of packages to "REQUIRES"
because dependencies are added automatically by cygport in most
cases.

-- 
Takashi Yano <takashi.yano@nifty.ne.jp>

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