FYI: here's a list of symbols for which I get deprecation warnings when
compiling httpd 2.4.47 (plus bundled APU) against current OpenSSL
3.0.0alpha15:
srclib/apr-util/crypto/apr_crypto_openssl.c:141:5
ENGINE_load_builtin_engines
srclib/apr-util/crypto/apr_crypto_openssl.c:142:5
ENGINE_register_all_complete
srclib/apr-util/crypto/apr_crypto_openssl.c:208:9 ENGINE_finish
srclib/apr-util/crypto/apr_crypto_openssl.c:209:9 ENGINE_free
srclib/apr-util/crypto/apr_crypto_openssl.c:326:9 ENGINE_by_id
srclib/apr-util/crypto/apr_crypto_openssl.c:330:9 ENGINE_init
srclib/apr-util/crypto/apr_crypto_openssl.c:331:13 ENGINE_free
modules/ssl/ssl_engine_config.c:610:5 ENGINE_by_id
modules/ssl/ssl_engine_config.c:612:9 ENGINE_free
modules/ssl/ssl_engine_config.c:617:9 ENGINE_get_first
modules/ssl/ssl_engine_config.c:619:13 ENGINE_get_id
modules/ssl/ssl_engine_config.c:620:42 ENGINE_get_name
modules/ssl/ssl_engine_config.c:623:13 ENGINE_get_next
modules/ssl/ssl_engine_init.c:102:5 DH_new
modules/ssl/ssl_engine_init.c:113:5 DH_set0_pqg
modules/ssl/ssl_engine_init.c:114:9 DH_free
modules/ssl/ssl_engine_init.c:1434:9 DH_bits
modules/ssl/ssl_engine_init.c:1437:9 DH_free
modules/ssl/ssl_engine_init.c:1447:9 EC_KEY_new_by_curve_name
modules/ssl/ssl_engine_init.c:1469:5 EC_KEY_free
modules/ssl/ssl_engine_init.c:152:9 DH_free
modules/ssl/ssl_engine_init.c:1722:9 SRP_VBASE_free
modules/ssl/ssl_engine_init.c:457:9 ENGINE_by_id
modules/ssl/ssl_engine_init.c:467:13 ENGINE_ctrl
modules/ssl/ssl_engine_init.c:471:9 ENGINE_set_default
modules/ssl/ssl_engine_init.c:482:9 ENGINE_free
modules/ssl/ssl_engine_init.c:548:9 SRP_VBASE_new
modules/ssl/ssl_engine_init.c:557:9 SRP_VBASE_init
modules/ssl/ssl_engine_init.c:565:9 SSL_CTX_set_srp_username_callback
modules/ssl/ssl_engine_init.c:567:9 SSL_CTX_set_srp_cb_arg
modules/ssl/ssl_engine_init.c:832:5 SSL_CTX_set_tmp_dh_callback
modules/ssl/ssl_engine_kernel.c:2632:9 HMAC_Init_ex
modules/ssl/ssl_engine_kernel.c:2653:9 HMAC_Init_ex
modules/ssl/ssl_engine_kernel.c:2781:5 SSL_get_srp_username
modules/ssl/ssl_engine_kernel.c:2788:9 SRP_VBASE_get1_by_user
modules/ssl/ssl_engine_kernel.c:2794:5 SSL_set_srp_server_param
modules/ssl/ssl_engine_kernel.c:2796:9 SRP_user_pwd_free
modules/ssl/ssl_engine_kernel.c:2804:5 SRP_user_pwd_free
modules/ssl/ssl_engine_kernel.c:545:5 SSL_get_srp_username
modules/ssl/ssl_engine_log.c:90:5 ERR_peek_error_line_data
modules/ssl/ssl_engine_pphrase.c:856:5 ENGINE_by_id
modules/ssl/ssl_engine_pphrase.c:864:5 ENGINE_init
modules/ssl/ssl_engine_pphrase.c:877:9 ENGINE_ctrl_cmd_string
modules/ssl/ssl_engine_pphrase.c:886:9 ENGINE_ctrl_cmd
modules/ssl/ssl_engine_pphrase.c:896:5 ENGINE_load_private_key
modules/ssl/ssl_engine_pphrase.c:904:5 ENGINE_finish
modules/ssl/ssl_engine_pphrase.c:905:5 ENGINE_free
modules/ssl/ssl_engine_vars.c:432:9 SSL_get_srp_username
modules/ssl/ssl_engine_vars.c:437:9 SSL_get_srp_userinfo
modules/ssl/ssl_util_ssl.c:474:5 PEM_read_bio_DHparams
modules/ssl/ssl_util_ssl.c:487:5 PEM_read_bio_ECPKParameters
support/ab.c:756:25 EVP_PKEY_get1_EC_KEY
support/ab.c:757:25 EC_KEY_get0_group
support/ab.c:758:25 EC_KEY_free
modules/http2/h2_push.c:477:5 SHA256_Update
modules/http2/h2_push.c:487:5 SHA256_Init
modules/http2/h2_push.c:492:5 SHA256_Final
modules/md/md_crypt.c:530:5 EVP_PKEY_get1_RSA
modules/md/md_crypt.c:535:5 RSA_get0_key
modules/md/md_crypt.c:542:5 EVP_PKEY_get1_RSA
modules/md/md_crypt.c:547:5 RSA_get0_key
