emacs: error: use of undeclared identifier 'MD5_DIGEST_SIZE'

[ryandesign (Ryan Carsten Schmidt)]

emacs doesn't build:

fns.c:4987:21: error: use of undeclared identifier 'MD5_DIGEST_SIZE'
      digest_size = MD5_DIGEST_SIZE;
                    ^
fns.c:4988:21: error: use of undeclared identifier 'md5_buffer'
      hash_func   = md5_buffer;
                    ^
fns.c:4992:21: error: use of undeclared identifier 'SHA1_DIGEST_SIZE'
      digest_size = SHA1_DIGEST_SIZE;
                    ^
fns.c:4993:21: error: use of undeclared identifier 'sha1_buffer'
      hash_func   = sha1_buffer;
                    ^
fns.c:4997:21: error: use of undeclared identifier 'SHA224_DIGEST_SIZE'
      digest_size = SHA224_DIGEST_SIZE;
                    ^
fns.c:4998:21: error: use of undeclared identifier 'sha224_buffer'
      hash_func   = sha224_buffer;
                    ^
fns.c:5002:21: error: use of undeclared identifier 'SHA256_DIGEST_SIZE'
      digest_size = SHA256_DIGEST_SIZE;
                    ^
fns.c:5003:21: error: use of undeclared identifier 'sha256_buffer'
      hash_func   = sha256_buffer;
                    ^
fns.c:5007:21: error: use of undeclared identifier 'SHA384_DIGEST_SIZE'
      digest_size = SHA384_DIGEST_SIZE;
                    ^
fns.c:5008:21: error: use of undeclared identifier 'sha384_buffer'
      hash_func   = sha384_buffer;
                    ^
fns.c:5012:21: error: use of undeclared identifier 'SHA512_DIGEST_SIZE'
      digest_size = SHA512_DIGEST_SIZE;
                    ^
fns.c:5013:21: error: use of undeclared identifier 'sha512_buffer'
      hash_func   = sha512_buffer;
                    ^
fns.c:5089:19: error: variable has incomplete type 'struct sha1_ctx'
  struct sha1_ctx ctx;
                  ^
fns.c:5089:10: note: forward declaration of 'struct sha1_ctx'
  struct sha1_ctx ctx;
         ^
fns.c:5099:3: warning: implicit declaration of function 'sha1_init_ctx' is invalid in C99 [-Wimplicit-function-declaration]
  sha1_init_ctx (&ctx);
  ^
fns.c:5102:3: warning: implicit declaration of function 'sha1_process_bytes' is invalid in C99 [-Wimplicit-function-declaration]
  sha1_process_bytes (BUF_BEG_ADDR (b),
  ^
fns.c:5113:44: error: use of undeclared identifier 'SHA1_DIGEST_SIZE'
  Lisp_Object digest = make_uninit_string (SHA1_DIGEST_SIZE * 2);
                                           ^
fns.c:5114:3: warning: implicit declaration of function 'sha1_finish_ctx' is invalid in C99 [-Wimplicit-function-declaration]
  sha1_finish_ctx (&ctx, SSDATA (digest));
  ^
fns.c:5115:38: error: use of undeclared identifier 'SHA1_DIGEST_SIZE'
  return make_digest_string (digest, SHA1_DIGEST_SIZE);
                                     ^
3 warnings and 15 errors generated.

[cooljeanius (Eric Gallager)]

in #62643 I discovered (via the use of trace mode) that this is due to having libmd active, as the build picks up its headers. A conflicts_build entry should be added against it, or the libmd port should be modified to put its headers somewhere else.

(This also affects emacs-app and emacs-mac-app, too, btw)

[ryandesign (Ryan Carsten Schmidt)]

libmd's headers have been moved to a subdirectory which should fix this problem.