Version 1.6.1 of POCO C++ Libraries is concerned.
My build system is Visual Studio 9.0 (2008) and I've installed Win32 OpenSSL 1.0.2d.
The build configuration "debug_static_mt" of the sample "TwitterClient" (part of NetSSL_OpenSSL) ends up in errors (90 unresolved externals; error LNK2019, LNK2001 and LNK1120).