59 lines
2.4 KiB
Diff
59 lines
2.4 KiB
Diff
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From: Jan Engelhardt <jengelh@inai.de>
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Date: 2020-07-04 23:56:54.411950316 +0200
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References: http://ffmpeg.org/pipermail/ffmpeg-devel/2020-July/265694.html
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User frispete wrote on 2020-6-26 22:13+0000 at
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https://build.opensuse.org/package/show/multimedia:libs/ffmpeg-4#comment-1257440
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: """Unfortunately, this version is binary incompatible to 4.2.3 in some
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aspects. [...]"""
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Further discussion on the mailing list explored this topic, and
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revealed that ELF symbol versioning is lacklusterly implemented in
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ffmpeg, which can cause inadvertent mixing of library versions on
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openSUSE, and precompiled Linux distributions in general. It is
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unclear when upstream will have implemented a solution. Until then,
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we will need to tighten the requirements between packages, to which
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end we stretch the SOVERSION to include MINOR.
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Programs linking to libavcodec get the right DT_NEEDED field with value
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libavcodec.so.58.91, and so they do not request libavcodec.so.58 (which could
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potentially lead to libavcodec.so.58.54).
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Programs dlopening libavcodec.so.58 will get something random, that's
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what dlopening programs have to deal with.
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[2022-07-23: ffmpeg is at it again! Reinstate the patch.
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$ abidiff abidiff /usr/lib64/libavformat.so.59.16.100 usr/lib64/libavformat.so.59.27.100
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Functions changes summary: 0 Removed, 0 Changed, 0 Added function
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Variables changes summary: 0 Removed, 0 Changed, 0 Added variable
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Function symbols changes summary: 0 Removed, 1 Added function symbol not referenced by debug info
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Variable symbols changes summary: 0 Removed, 0 Added variable symbol not referenced by debug info
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1 Added function symbol not referenced by debug info:
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[A] avio_vprintf@@LIBAVFORMAT_59
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]
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---
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configure | 4 ++--
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1 file changed, 2 insertions(+), 2 deletions(-)
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Index: ffmpeg-4.4.1/configure
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===================================================================
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--- ffmpeg-4.4.1.orig/configure
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+++ ffmpeg-4.4.1/configure
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@@ -3834,10 +3834,10 @@ SLIBPREF="lib"
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SLIBSUF=".so"
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SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
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SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
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-SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
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+SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
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LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
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SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
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-SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
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+SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME) $(SLIBNAME).$(LIBMAJOR)'
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VERSION_SCRIPT_POSTPROCESS_CMD="cat"
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asflags_filter=echo
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