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It's wrong to assume that clock_gettime is unavailable on any *-*-linux* target that doesn't have glibc 2.17 or later. Use a generic test instead of using __GLIBC_PREREQ. Only do that test when is_hosted=yes so that we don't get an error for cross targets without a working linker. This ensures that C library's clock_gettime will be used on non-glibc targets, instead of an incorrect syscall to SYS_clock_gettime. PR libstdc++/93325 * acinclude.m4 (GLIBCXX_ENABLE_LIBSTDCXX_TIME): Use AC_SEARCH_LIBS for clock_gettime instead of explicit glibc version check. * configure: Regenerate.
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