Bug 386577 – media-sound/mpg123: set dependency_libs to '' in libtool files (.la) to make them harmless

• Status: RESOLVED FIXED
• Product: Gentoo Linux

[Description Hans 2011-10-09 19:54:19 UTC]

Created attachment 289407 [details]
emerge --info

media-sound/mpg123-1.13.4 installs three .la files, not even static libraries:

/usr/lib64/libmpg123.la
/usr/lib64/mpg123/output_alsa.la
/usr/lib64/mpg123/output_dummy.la

Please get rid of these files or introduce USE=static-libs support.
Thanks!

[Comment 1 Samuli Suominen (RETIRED) 2011-10-09 20:22:16 UTC]

They are propably used by libltdl for loading plugins. USE=static-libs is not the only use for .la files.

[Comment 2 Samuli Suominen (RETIRED) 2011-10-09 20:23:05 UTC]

(In reply to comment #1)
> They are propably used by libltdl for loading plugins. USE=static-libs is not
> the only use for .la files.

$ objdump -p /usr/bin/mpg123 | grep ltdl
  NEEDED               libltdl.so.7

[Comment 3 Hans 2011-10-09 20:32:05 UTC]

You are, of course, absolutely right.
I was only considering the libraries, since I have no need for the binaries.
My bad, sorry.

[Comment 4 Samuli Suominen (RETIRED) 2011-10-09 20:36:27 UTC]

And after removing .la files:

$ mpg123 Boot\ to\ the\ Head.MP3 
[module.c:140] error: Failed to open module alsa: file not found
[module.c:140] error: Failed to open module sdl: file not found
[audio.c:180] error: Unable to find a working output module in this list:
alsa,sdl
[audio.c:529] error: Failed to open audio output module
[mpg123.c:869] error: Failed to initialize output, goodbye.

Please see:

http://blog.flameeyes.eu/2009/07/06/identifying-pointless-la-files-for-plugins

But we can make them harmless:

+  09 Oct 2011; Samuli Suominen <[e-mail]> mpg123-1.13.4.ebuild:
+  Reset dependency_libs to '' in libtool files (libltdl is using them to load
+  output plugins) wrt #386577