Gentoo's Bugzilla –
Attachment 555092 Details for
Bug 671138dev-libs/xml-security-c-1.7.3 with dev-libs/openssl-1.1.1 - In file included from enc/OpenSSL/OpenSSLCryptoHashHMAC.cpp:35: ../xsec/enc/OpenSSL/OpenSSLCryptoHashHMAC.hpp:178:13: error: field ‘m_hctx’ has incomplete type ‘HMAC_CTX’ {aka ‘hmac_ctx_st’}