On Thu, Mar 26, 2020 at 03:38:27PM +0100, Aurelien LAJOIE wrote: > +#ifdef UUID_UNPARSE_DEFAULT_UPPER > void uuid_unparse(const uuid_t uu, char *out) > -{ > - uuid_unparse_x(uu, out, FMT_DEFAULT); > -} > + __attribute__((alias("uuid_unparse_upper"))); > +#else > +void uuid_unparse(const uuid_t uu, char *out) > + __attribute__((alias("uuid_unparse_lower"))); > +#endif The alias attribute is not portable to clang on Darwin. https://travis-ci.org/github/karelzak/util-linux/jobs/669244356?utm_medium=notification&utm_source=email I have replaced the aliases with function calls. https://github.com/karelzak/util-linux/commit/bee464006776203a8cb545a35c86234181c7a55a Karel -- Karel Zak <kzak@xxxxxxxxxx> http://karelzak.blogspot.com