cc -pthread -Wall -Wextra -Werror=implicit-function-declaration wctype/iswctype_l.c -o wctype/iswctype_l -D_GNU_SOURCE -D_BSD_SOURCE -D_ALL_SOURCE -D_DEFAULT_SOURCE -lm -lpthread -lrt -lintl -liconv [cc@relibc::platform::sys:590 INFO] TODO: getrlimit(3, 0x7ffffffffbf0): not implemented [cc1@relibc::platform::sys:590 INFO] TODO: getrlimit(3, 0x7ffffffffb00): not implemented [cc1@relibc::platform::sys:590 INFO] TODO: getrlimit(9, 0x7ffffffffad0): not implemented [cc1@relibc::platform::sys:590 INFO] TODO: getrlimit(9, 0x7ffffffffb00): not implemented [cc1@relibc::platform::sys:590 INFO] TODO: getrlimit(5, 0x7ffffffffb00): not implemented [cc1@relibc::platform::sys:590 INFO] TODO: getrlimit(9, 0x7ffffffffad0): not implemented wctype/iswctype_l.c: In function 'main': wctype/iswctype_l.c:13:30: error: implicit declaration of function 'wctype_l'; did you mean 'wctype'? [-Werror=implicit-function-declaration] 13 | wctype_t charclass = wctype_l("alpha", locale); | ^~~~~~~~ | wctype wctype/iswctype_l.c:18:15: error: implicit declaration of function 'iswctype_l'; did you mean 'iswctype'? [-Werror=implicit-function-declaration] 18 | if ( !iswctype_l(wc1, charclass, locale) ) | ^~~~~~~~~~ | iswctype cc1: some warnings being treated as errors