[Bug]: librdkafka is not buildable with openssl on

[auzhva]

What happened?

When openssl is on, which is default, it doesn't build with errors:

external/librdkafka+/src/rdkafka_ssl.c:1533:21: error: call to undeclared function 'SSL_CTX_use_cert_and_key'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
                r = SSL_CTX_use_cert_and_key(ctx, cert, pkey, ca, 1);
                    ^
external/librdkafka+/src/rdkafka_ssl.c:1533:21: note: did you mean 'SSL_CTX_set_chain_and_key'?
external/boringssl+/include/openssl/ssl.h:1288:20: note: 'SSL_CTX_set_chain_and_key' declared here
OPENSSL_EXPORT int SSL_CTX_set_chain_and_key(
                   ^
external/librdkafka+/src/rdkafka_ssl.c:1816:45: warning: format specifies type 'unsigned long' but the argument has type 'int' [-Wformat]
                     OpenSSL_version_num(), OPENSSL_VERSION_NUMBER);
                                            ^~~~~~~~~~~~~~~~~~~~~~
external/boringssl+/include/openssl/base.h:101:32: note: expanded from macro 'OPENSSL_VERSION_NUMBER'
#define OPENSSL_VERSION_NUMBER 0x1010107f
                               ^~~~~~~~~~
external/librdkafka+/src/rdkafka_int.h:1006:66: note: expanded from macro 'rd_kafka_dbg'
                                      (RD_KAFKA_DBG_##ctx), fac, __VA_ARGS__); \
                                                                 ^~~~~~~~~~~
external/librdkafka+/src/rdkafka_ssl.c:2063:14: error: call to undeclared function 'HMAC'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
        if (!HMAC(evp, (const unsigned char *)in->ptr, (int)in->size, saltplus,

Version

Development (host) and target OS/architectures:

Output of bazel --version:
bazel 8.0.1

Version of relevant rules from the WORKSPACE or MODULE.bazel file:
bazel_dep(name = "librdkafka", version = "2.8.0.bcr.2")

Language(s) and/or frameworks involved:

How to reproduce

Any other information?

No response