/opt/IBM/openxlC/17.1.1/bin/ibm-clang -pthread  -Wall -Wextra -Werror=implicit-function-declaration string/strlcat.c -o string/strlcat -D_GNU_SOURCE -D_BSD_SOURCE -D_ALL_SOURCE -D_DEFAULT_SOURCE -lm -lpthread -lrt -latomic
string/strlcat.c:11:18: error: call to undeclared library function 'strlcat' with type 'unsigned long (char *, const char *, unsigned long)'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration]
        size_t result = strlcat(dst, src, 8);
                        ^
string/strlcat.c:11:18: note: include the header <string.h> or explicitly provide a declaration for 'strlcat'
1 error generated.