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meson: Use <version> header for C++ library version check

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The ciso646 header has been removed in C++20. Use the version header
instead.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Reviewed-by: Barnabás Pőcze <barnabas.pocze@ideasonboard.com>
This commit is contained in:
Laurent Pinchart
2026-04-06 01:00:32 +03:00
parent cfa7520a22
commit 3ca844bd94
1 changed files with 2 additions and 3 deletions
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meson.build
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@@ -118,10 +118,9 @@ cpp_arguments = [
'-Wnon-virtual-dtor',
]
# \todo Switch to `version` when moving to C++20 as `ciso646` has been removed in C++20.
if cxx.has_header_symbol('ciso646', '_LIBCPP_VERSION')
if cxx.has_header_symbol('version', '_LIBCPP_VERSION')
cxx_stdlib = 'libc++'
elif cxx.has_header_symbol('ciso646', '__GLIBCXX__')
elif cxx.has_header_symbol('version', '__GLIBCXX__')
cxx_stdlib = 'libstdc++'
else
error('C++ standard library cannot be detected')