crypto/krb5/src/util/profile/prof_file.c:189:20: warning: implicit declaration of function 'secure_getenv' is invalid in C99 [-Wimplicit-function-declaration] /usr/include/sys/sysctl.h:1189:40: error: unknown type name 'size_t' /usr/include/sys/sysctl.h:1190:40: error: unknown type name 'size_t' /usr/include/sys/sysctl.h:1191:42: error: unknown type name 'size_t'