https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111238
--- Comment #1 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Christophe Lyon <cl...@gcc.gnu.org>: https://gcc.gnu.org/g:56d0592db19b69e3cc217fabe5c2f8be3a75a8cf commit r14-3660-g56d0592db19b69e3cc217fabe5c2f8be3a75a8cf Author: Christophe Lyon <christophe.l...@linaro.org> Date: Thu Aug 31 13:50:16 2023 +0000 libstdc++: Use GLIBCXX_CHECK_LINKER_FEATURES for cross-builds (PR111238) As discussed in PR104167 (comments #8 and below), and PR111238, using -Wl,-gc-sections in the libstdc++ testsuite for arm-eabi (cross-toolchain) avoids link failures for a few tests: 27_io/filesystem/path/108636.cc std/time/clock/gps/1.cc std/time/clock/gps/io.cc std/time/clock/tai/1.cc std/time/clock/tai/io.cc std/time/clock/utc/1.cc std/time/clock/utc/io.cc std/time/clock/utc/leap_second_info.cc std/time/exceptions.cc std/time/format.cc std/time/time_zone/get_info_local.cc std/time/time_zone/get_info_sys.cc std/time/tzdb/1.cc std/time/tzdb/leap_seconds.cc std/time/tzdb_list/1.cc std/time/zoned_time/1.cc std/time/zoned_time/custom.cc std/time/zoned_time/io.cc std/time/zoned_traits.cc This patch achieves this by calling GLIBCXX_CHECK_LINKER_FEATURES in cross-build cases, like we already do for native builds. We keep not doing so in Canadian-cross builds. However, this would hide the fact that libstdc++ somehow forces the user to use -Wl,-gc-sections to avoid undefined references to chdir, mkdir, chmod, pathconf, ... so maybe it's better to keep the status quo and not apply this patch? 2023-08-31 Christophe Lyon <christophe.l...@linaro.org> libstdc++-v3/ChangeLog: PR libstdc++/111238 * configure: Regenerate. * configure.ac: Call GLIBCXX_CHECK_LINKER_FEATURES in cross, non-Canadian builds.
