x86_64-managarm-gcc -pthread  -Wall -Wextra -Werror=implicit-function-declaration wchar/wcpcpy.c -o wchar/wcpcpy -D_GNU_SOURCE -D_BSD_SOURCE -D_ALL_SOURCE -D_DEFAULT_SOURCE -lm -lpthread -lrt -lintl -liconv
wchar/wcpcpy.c: In function ‘main’:
wchar/wcpcpy.c:11:14: error: implicit declaration of function ‘wcpcpy’; did you mean ‘wcscpy’? [-Wimplicit-function-declaration]
   11 |         if ( wcpcpy(dst, src) != dst + 7 )
      |              ^~~~~~
      |              wcscpy
wchar/wcpcpy.c:11:31: warning: comparison between pointer and integer
   11 |         if ( wcpcpy(dst, src) != dst + 7 )
      |                               ^~