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Bug#966183: abseil FTBFS on !amd64/ppc64: missing symbols

From	Adrian Bunk <bunk@debian.org>
Newsgroups	linux.debian.bugs.dist
Subject	Bug#966183: abseil FTBFS on !amd64/ppc64: missing symbols
Date	2020-07-24 14:10 +0200
Message-ID	<Aw4Gu-7ag-1@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

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Source: abseil
Version: 0~20200225.2-1
Severity: serious
Tags: ftbfs

https://buildd.debian.org/status/package.php?p=abseil&suite=sid

...
   dh_makeshlibs -a
dpkg-gensymbols: warning: some new symbols appeared in the symbols file: see diff output below
dpkg-gensymbols: error: some symbols or patterns disappeared in the symbols file: see diff output below
dpkg-gensymbols: warning: debian/libabsl20200225/DEBIAN/symbols doesn't match completely debian/libabsl20200225.symbols
...


Symbols files for C++ libraries are a real pain,
unless upstream makes only exported symbols visible:
https://gcc.gnu.org/wiki/Visibility

When the soname of the library encodes the exact upstream
version as abseil does, there are exactly zero benefits
of using a symbols - every update of abseil will be a
library transition in any case.

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Bug#966183: abseil FTBFS on !amd64/ppc64: missing symbols Adrian Bunk <bunk@debian.org> - 2020-07-24 14:10 +0200

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