_capsicum.c:1:10: fatal error: sys/capsicum.h: No such file or directory
 #include <sys/capsicum.h>
          ^~~~~~~~~~~~~~~~
compilation terminated.
_pledge.c: In function 'main':
_pledge.c:3:16: error: implicit declaration of function 'pledge' [-Werror=implicit-function-declaration]
         return pledge("stdio", NULL);
                ^~~~~~
cc1: all warnings being treated as errors
_getifaddrs_addrflags.c: In function 'main':
_getifaddrs_addrflags.c:6:20: error: 'struct ifaddrs' has no member named 'ifa_addrflags'; did you mean 'ifa_flags'?
  return (int)ifap->ifa_addrflags;
                    ^~~~~~~~~~~~~
                    ifa_flags
_arc4random.c: In function 'main':
_arc4random.c:3:2: error: implicit declaration of function 'arc4random'; did you mean 'srandom'? [-Werror=implicit-function-declaration]
  arc4random();
  ^~~~~~~~~~
  srandom
cc1: all warnings being treated as errors
_arc4random_uniform.c: In function 'main':
_arc4random_uniform.c:3:2: error: implicit declaration of function 'arc4random_uniform' [-Werror=implicit-function-declaration]
  arc4random_uniform(100);
  ^~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
_pidfile.c:2:10: fatal error: util.h: No such file or directory
 #include <util.h>
          ^~~~~~~~
compilation terminated.
_setproctitle.c: In function 'main':
_setproctitle.c:4:2: error: implicit declaration of function 'setproctitle'; did you mean 'sethostid'? [-Werror=implicit-function-declaration]
  setproctitle("foo");
  ^~~~~~~~~~~~
  sethostid
cc1: all warnings being treated as errors
_strlcpy.c: In function 'main':
_strlcpy.c:5:2: error: implicit declaration of function 'strlcpy'; did you mean 'strncpy'? [-Werror=implicit-function-declaration]
  strlcpy(s2, s1, sizeof(s2));
  ^~~~~~~
  strncpy
cc1: all warnings being treated as errors
_strtoi.c: In function 'main':
_strtoi.c:6:2: error: implicit declaration of function 'strtoi'; did you mean 'strtoq'? [-Werror=implicit-function-declaration]
  strtoi("1234", NULL, 0, 0, INT32_MAX, &e);
  ^~~~~~
  strtoq
cc1: all warnings being treated as errors
_consttime_memequal.c: In function 'main':
_consttime_memequal.c:3:9: error: implicit declaration of function 'consttime_memequal' [-Werror=implicit-function-declaration]
  return consttime_memequal("deadbeef", "deadbeef", 8);
         ^~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
_queue.c: In function 'main':
_queue.c:4:2: error: #error TAILQ_FOREACH_SAFE
 #error TAILQ_FOREACH_SAFE
  ^~~~~
_queue.c: In function 'main':
_queue.c:4:2: error: #error TAILQ_FOREACH_MUTABLE
 #error TAILQ_FOREACH_MUTABLE
  ^~~~~
_rbtree.c:1:10: fatal error: sys/rbtree.h: No such file or directory
 #include <sys/rbtree.h>
          ^~~~~~~~~~~~~~
compilation terminated.
_be64enc.c:1:10: fatal error: sys/endian.h: No such file or directory
 #include <sys/endian.h>
          ^~~~~~~~~~~~~~
compilation terminated.
_fls64.c:1:10: fatal error: sys/bitops.h: No such file or directory
 #include <sys/bitops.h>
          ^~~~~~~~~~~~~~
compilation terminated.
_md5.c:2:10: fatal error: md5.h: No such file or directory
 #include <md5.h>
          ^~~~~~~
compilation terminated.
_sha256.c: In function 'main':
_sha256.c:4:2: error: unknown type name 'SHA256_CTX'
  SHA256_CTX context;
  ^~~~~~~~~~
_sha256.c:5:2: error: implicit declaration of function 'SHA256_Init' [-Werror=implicit-function-declaration]
  SHA256_Init(&context);
  ^~~~~~~~~~~
cc1: all warnings being treated as errors
_sha256.c: In function 'main':
_sha256.c:4:2: error: unknown type name 'SHA2_CTX'
  SHA2_CTX context;
  ^~~~~~~~
_sha256.c:5:2: error: implicit declaration of function 'SHA256Init' [-Werror=implicit-function-declaration]
  SHA256Init(&context);
  ^~~~~~~~~~
cc1: all warnings being treated as errors
_hmac.c:2:10: fatal error: hmac.h: No such file or directory
 #include <hmac.h>
          ^~~~~~~~
compilation terminated.
_hmac.c: In function 'main':
_hmac.c:3:2: error: implicit declaration of function 'hmac' [-Werror=implicit-function-declaration]
  hmac(NULL, NULL, 0, NULL, 0, NULL, 0);
  ^~~~
cc1: all warnings being treated as errors