Unable to specify custom openSSL directory with openssl-linked

Running ./configure with openssl-linked and custom libs no longer works on 5.9.0:

OPENSSL_LIBDIR='/opt/local/lib' OPENSSL_INCDIR='/opt/local/include' OPENSSL_LIBS='-lssl -lcrypto' ./configure -opensource -openssl-linked -sdk macosx10.12

Excerpt from configuration output:

Qt Network:
   CoreWLan ............................... yes
   getaddrinfo() .......................... yes
   getifaddrs() ........................... yes
   IPv6 ifname ............................ yes
   libproxy ............................... no
   SecureTransport ........................ no
   OpenSSL ................................ no
    Qt directly linked to OpenSSL ........ no
  SCTP ................................... no
   Use system proxies ..................... yes

 and at the very end:

ERROR: Feature 'openssl-linked' was enabled, but the pre-condition '!features.securetransport && libs.openssl' failed. 

ERROR: Feature 'openssl' was enabled, but the pre-condition '!features.securetransport && (features.openssl-linked || libs.openssl_headers)' failed.

This is the content of the directories:

$ ll /opt/local/lib/libcrypto* /opt/local/lib/libssl*
{{ lrwxr-xr-x 1 root admin 58 Jun 7 09:58 /opt/local/lib/libcrypto.1.0.0.dylib -> /usr/local/Cellar/openssl/1.0.2l/lib/libcrypto.1.0.0.dylib}}
{{ lrwxr-xr-x 1 root admin 48 Jun 7 09:58 /opt/local/lib/libcrypto.a -> /usr/local/Cellar/openssl/1.0.2l/lib/libcrypto.a}}
{{ lrwxr-xr-x 1 root admin 21 Mar 1 2016 /opt/local/lib/libcrypto.dylib -> libcrypto.1.0.0.dylib}}
{{ lrwxr-xr-x 1 root admin 55 Jun 7 09:58 /opt/local/lib/libssl.1.0.0.dylib -> /usr/local/Cellar/openssl/1.0.2l/lib/libssl.1.0.0.dylib}}
{{ lrwxr-xr-x 1 root admin 45 Jun 7 09:58 /opt/local/lib/libssl.a -> /usr/local/Cellar/openssl/1.0.2l/lib/libssl.a}}
{{ lrwxr-xr-x 1 root admin 18 Mar 1 2016 /opt/local/lib/libssl.dylib -> libssl.1.0.0.dylib}}
{{ $ ll /opt/local/include/openssl}}
{{ lrwxr-xr-x 1 root admin 49 Jun 7 09:58 /opt/local/include/openssl -> /usr/local/Cellar/openssl/1.0.2l/include/openssl/}}

This may be related to the fix of https://bugreports.qt.io/browse/QTBUG-30083.