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doc: update docs for CHECK_ATOMIC macro

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Clarify that supported versions of GCC are not affected, and that Clang
prior to version 15 still requires the explicit -latomic linking, when
compiling for 32-bit.
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fanquake 2023-11-02 16:53:58 +00:00
parent 023418a140
commit ebc7063c80
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1 changed files with 4 additions and 2 deletions
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build-aux/m4/l_atomic.m4
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@ -4,8 +4,10 @@ dnl permitted in any medium without royalty provided the copyright notice
dnl and this notice are preserved. This file is offered as-is, without any
dnl warranty.
# Some versions of gcc/libstdc++ require linking with -latomic if
# using the C++ atomic library.
# Clang prior to version 15, when building for 32-bit,
# and linking against libstdc++, requires linking with
# -latomic if using the C++ atomic library.
# Can be tested with: clang++ test.cpp -m32
#
# Sourced from http://bugs.debian.org/797228