BIND is not compatible with LibreSSL 3.5.0

Summary

BIND fails to compile with the newly released LibreSSL 3.5.0.

BIND version used

BIND 9.18.0

Steps to reproduce

./configure
make -j8

What is the current bug behavior?

Compilation error in 3 places:

aes.c: In function 'isc_aes128_crypt':
aes.c:35:24: error: storage size of '_context' isn't known
   35 |         EVP_CIPHER_CTX _context;
      |                        ^~~~~~~~
aes.c:26:43: error: left-hand operand of comma expression has no effect [-Werror=unused-value]
   26 | #define EVP_CIPHER_CTX_new()   &(_context), EVP_CIPHER_CTX_init(&_context)
      |                                           ^
aes.c:41:13: note: in expansion of macro 'EVP_CIPHER_CTX_new'
   41 |         c = EVP_CIPHER_CTX_new();
      |             ^~~~~~~~~~~~~~~~~~
aes.c:35:24: error: unused variable '_context' [-Werror=unused-variable]
   35 |         EVP_CIPHER_CTX _context;
      |                        ^~~~~~~~
aes.c: In function 'isc_aes192_crypt':
aes.c:55:24: error: storage size of '_context' isn't known
   55 |         EVP_CIPHER_CTX _context;
      |                        ^~~~~~~~
aes.c:26:43: error: left-hand operand of comma expression has no effect [-Werror=unused-value]
   26 | #define EVP_CIPHER_CTX_new()   &(_context), EVP_CIPHER_CTX_init(&_context)
      |                                           ^
aes.c:61:13: note: in expansion of macro 'EVP_CIPHER_CTX_new'
   61 |         c = EVP_CIPHER_CTX_new();
      |             ^~~~~~~~~~~~~~~~~~
aes.c:55:24: error: unused variable '_context' [-Werror=unused-variable]
   55 |         EVP_CIPHER_CTX _context;
      |                        ^~~~~~~~
aes.c: In function 'isc_aes256_crypt':
aes.c:75:24: error: storage size of '_context' isn't known
   75 |         EVP_CIPHER_CTX _context;
      |                        ^~~~~~~~
aes.c:26:43: error: left-hand operand of comma expression has no effect [-Werror=unused-value]
   26 | #define EVP_CIPHER_CTX_new()   &(_context), EVP_CIPHER_CTX_init(&_context)
      |                                           ^
aes.c:81:13: note: in expansion of macro 'EVP_CIPHER_CTX_new'
   81 |         c = EVP_CIPHER_CTX_new();
      |             ^~~~~~~~~~~~~~~~~~
aes.c:75:24: error: unused variable '_context' [-Werror=unused-variable]
   75 |         EVP_CIPHER_CTX _context;
      |                        ^~~~~~~~

openssldh_link.c: In function 'progress_cb':
dst_openssl.h:38:33: error: invalid use of incomplete typedef 'BN_GENCB' {aka 'struct bn_gencb_st'}
   38 | #define BN_GENCB_get_arg(x) ((x)->arg)
      |                                 ^~
openssldh_link.c:329:18: note: in expansion of macro 'BN_GENCB_get_arg'
  329 |         u.dptr = BN_GENCB_get_arg(cb);
      |                  ^~~~~~~~~~~~~~~~
openssldh_link.c: In function 'openssldh_generate':
openssldh_link.c:364:18: error: storage size of '_cb' isn't known
  364 |         BN_GENCB _cb;
      |                  ^~~
openssldh_link.c:364:18: error: unused variable '_cb' [-Werror=unused-variable]

opensslrsa_link.c: In function 'progress_cb':
dst_openssl.h:38:33: error: invalid use of incomplete typedef 'BN_GENCB' {aka 'struct bn_gencb_st'}
   38 | #define BN_GENCB_get_arg(x) ((x)->arg)
      |                                 ^~
opensslrsa_link.c:352:18: note: in expansion of macro 'BN_GENCB_get_arg'
  352 |         u.dptr = BN_GENCB_get_arg(cb);
      |                  ^~~~~~~~~~~~~~~~
opensslrsa_link.c: In function 'opensslrsa_generate':
opensslrsa_link.c:387:18: error: storage size of '_cb' isn't known
  387 |         BN_GENCB _cb;
      |                  ^~~
opensslrsa_link.c:387:18: error: unused variable '_cb' [-Werror=unused-variable]

What is the expected correct behavior?

Clean compile.

Relevant configuration files

N/A

Relevant logs and/or screenshots

N/A

Possible fixes

MR Pending