BIND 9.18.0 and Mac OS X 10.15.7 - cannot build

[Larry Stone]

So, just for fun, I decided to see if I could build 9.18.0 on my current MacBookPro (where I already run 9.16.26). It’s on MacOS Catalina 10.15.7 (cannot go higher - new MacBookPro coming soon!).

First attempt to configure told me I either needed libnghttp2 or to configure with --disable-doh. I downloaded nghttp2 (v1.46.0) from nghttp2.org per the link in the release notes, built and installed it. Attempted to configure bind 9.18.0 and this time configure aborted with:
configure: error: in `[redacted dirpath]/bind-9.18.0':
configure: error: EVP_DigestSignInit/EVP_DigestVerifyInit support in OpenSSL is mandatory.

Tried configuring with --disable-doh and received the same error. Googling that message and variations of it have turned up nothing useful (at least to me).

OpenSSL version was 1.1.1a, I subsequently upgraded to 1.1.1m but same error. OpenSSL is installed in /usr/local/ssl and built with the standard ./configure; make.

From config.log, the relevant part appears to be:
configure:17852: checking for EVP_DigestSignInit
configure:17852: gcc -o conftest -g -O2 -pthread -I/usr/local/ssl/include   conftest.c -lpthread  -lssl -lcrypto >&5
ld: library not found for -lssl
clang: error: linker command failed with exit code 1 (use -v to see invocation)
configure:17852: $? = 1

(I then tried to build 9.18.0 on an older system I have running macOS 10.13.6. I did not try to install nghttp2 on it and configure worked fine with --disable-doh. But it then errored with some SSL issues (./openssl_shim.h:99:1: error: conflicting types for ‘OPENSSL_init_crypto’ was the first) but I have not started to dig into that (this system still has OpenSSL 1.1.1a)).

Anyway, I’m stuck on the "configure: error: EVP_DigestSignInit/EVP_DigestVerifyInit support in OpenSSL is mandatory” error and not sure what direction to go. I think it’s an issue with OpenSSL but I can’t see what it is (and Bind 9.16.x builds fine). Probably something simple but I need a nudge in the right direction. Thanks.

-- 
Larry Stone
lstone19 at stonejongleux.com