From: Jonathan Wakely Date: Mon, 16 Jan 2023 15:52:20 +0000 (+0000) Subject: libstdc++: Fix --with-default-libstdcxx-abi=gcc4-compatible build X-Git-Tag: basepoints/gcc-14~1993 X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=d694a3d57535fbb3737dd583b15b69e0845a5846;p=thirdparty%2Fgcc.git libstdc++: Fix --with-default-libstdcxx-abi=gcc4-compatible build When building src/c++20/tzdb.cc we currently get a build error for --with-default-libstdcxx-abi=gcc4-compatible because std::chrono::tzdb and related types are not declared for the gcc4-compatible ABI (unless --disable-libstdcxx-dual-abi is also used, so that the gcc4-compatible ABI is the only one built). Define _GLIBCXX_USE_CXX11_ABI in tzdb.cc so that for a dual-abi build we always build it for the cxx11 ABI. libstdc++-v3/ChangeLog: * src/c++20/tzdb.cc (_GLIBCXX_USE_CXX11_ABI): Define to 1. --- diff --git a/libstdc++-v3/src/c++20/tzdb.cc b/libstdc++-v3/src/c++20/tzdb.cc index 2ce53d387687..20399b91e470 100644 --- a/libstdc++-v3/src/c++20/tzdb.cc +++ b/libstdc++-v3/src/c++20/tzdb.cc @@ -25,6 +25,9 @@ // The -Wabi warnings in this file are all for non-exported symbols. #pragma GCC diagnostic ignored "-Wabi" +// In the usual dual-abi build, std::chrono::tzdb is only defined for cxx11. +#define _GLIBCXX_USE_CXX11_ABI 1 + #include #include // ifstream #include // istringstream