https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117135
--- Comment #9 from Jonathan Wakely <redi at gcc dot gnu.org> --- (In reply to Jonathan Wakely from comment #8) > Ah! that explains it. The --enable-clocale=gnu configure option gets ignored: > > # Sanity check model, and test for special functionality. > if test $enable_clocale_flag = gnu; then > AC_EGREP_CPP([_GLIBCXX_ok], [ > #include <features.h> > #if (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 3)) && > !defined(__UCLIBC__) > _GLIBCXX_ok > #endif > ], enable_clocale_flag=gnu, enable_clocale_flag=generic) I think I should also make configure print a warning for this case to say that --enable-clocale=gnu is being ignored. If somebody wanted to, they could also implement a config/locale/newlib/time_members.cc model that used the newlib extensions _NL_TIME_WD_T_FMT etc.
