need help to build urdl in win19/64bit-pro

[meir100]

hello chriskohlhoff - URDL lib
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in windows 10/64bit/pro:

i defined BOOST_ROOT environment variable pointing to the location of Boost. C:\boost_1_64_0_GCC
i set an OPENSSL_ROOT environment variable pointing to the location of OpenSSL. C:\openssl-1.1.0e

(i can see it with set command)

i use bjam "toolset=gcc" in: C:\urdl-master
output:

Performing configuration checks

- 32-bit                   : no
- 64-bit                   : yes
- arm                      : no
- mips1                    : no
- power                    : no
- sparc                    : no
- x86                      : yes
- symlinks supported       : no
- junctions supported      : yes
- hardlinks supported      : yes

error: Unable to find file or target named
error: '/urdl//C:\openssl-1.1.0e/out32dll/libeay32.lib'
error: referred to from project at
error: 'build'

what do i have to do to make it build in windows 10/64bit/pro?