Compilation against openssl 3.0.0 beta2 is failing to build unbound

[satya-rajesh]

Unbound when compiled against openssl beta2, it is failing to compile.
https://github.com/openssl/openssl/releases/tag/openssl-3.0.0-beta2

To reproduce
Steps to reproduce the behavior:

1. Use openssl 3.0.0 beta2 from https://github.com/openssl/openssl/releases/tag/openssl-3.0.0-beta2
2. Compile unbound

Expected behavior
The build should succeed

System:

• Unbound version: 1.12.0
• OS: photon

Error:
smallapp/unbound-control.c: In function 'ssl_path_err':
smallapp/unbound-control.c:490:4: warning: implicit declaration of function 'ERR_GET_FUNC'; did you mean 'ERR_GET_LIB'? [-Wimplicit-function-declaration]
490 | (ERR_GET_FUNC(err) == SYS_F_FOPEN ||
| ^~~~~~~~~~~~
| ERR_GET_LIB

/bin/ld: .libs/unbound-control.o: in function ssl_path_err': /usr/src/photon/BUILD/unbound-1.12.0/smallapp/unbound-control.c:490: undefined reference to ERR_GET_FUNC'
/bin/ld: /usr/src/photon/BUILD/unbound-1.12.0/smallapp/unbound-control.c:491: undefined reference to `ERR_GET_FUNC'
collect2: error: ld returned 1 exit status
make: *** [Makefile:355: unbound-control] Error 1

[satya-rajesh]

As per: https://www.openssl.org/news/changelog.html

The ERR_GET_FUNC() function was removed. With the loss of meaningful function codes, this function can only cause problems for calling applications.

[wcawijngaards]

In the latest version of the code repo, this compilation problem is fixed. Also the use of deprecated functions has been replaced with the new OpenSSL 3.0.0 provider API. Thanks for the links!

[satya-rajesh]

Thanks, it works now