is libpq and openssl 1.1.* compatible?

[Konstantin Izmailov <pgfizm@xxxxxxxxx>]

I got the latest libpq (from pg 10.1), and tried to compile it with openssl 1.1. I got errors:
libpq10\fe-secure-openssl.c(1582): error C2037: left of 'ptr' specifies undefined struct/union 'bio_st'
libpq10\fe-secure-openssl.c(1582): error C2198: 'pqsecure_raw_read' : too few arguments for call
libpq10\fe-secure-openssl.c(1612): error C2037: left of 'ptr' specifies undefined struct/union 'bio_st'
libpq10\fe-secure-openssl.c(1612): error C2198: 'pqsecure_raw_write' : too few arguments for call
libpq10\fe-secure-openssl.c(1671): error C2027: use of undefined type 'bio_method_st'
          openssl-1.1.0g\inc32\openssl\bio.h(244) : see declaration of 'bio_method_st'
libpq10\fe-secure-openssl.c(1674): error C2027: use of undefined type 'bio_method_st'

I wonder if I'm not doing smth right, or libpq is not compatible with openssl 1.1? Please help.

Thank you!