OSSL_PROVIDER reference issue

[kgoudra at ups.com]

Hello Team,

We are getting below error specifically in linux RHEL8 environment and the same is working perfect on windows.

error: 'OSSL_PROVIDER' does not name a type; did you mean 'SSL_TXT_IDEA'?
  static OSSL_PROVIDER *legacy;
         ^~~~~~~~~~~~~
         SSL_TXT_IDEA
error: 'OSSL_PROVIDER' does not name a type; did you mean 'SSL_TXT_IDEA'?
  static OSSL_PROVIDER *deflt;

Code is as below:
                static OSSL_PROVIDER *legacy;
                static OSSL_PROVIDER *deflt;

Trying to use them as below:
                OSSL_PROVIDER * SSLSocket::legacy;
                OSSL_PROVIDER * SSLSocket::deflt;

We are trying to use provider functionalities like OSSL_PROVIDER_load() and OSSL_PROVIDER_unload() in our app and only on linux it is not able to reference although we have included openssl headers.

Please suggest what could be the problem here?

Thanks,
Kirtikumar
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