Ok the problem is that it doesn't compiles. The mingw/msys header (wincrypt.h) missing a number of definitions used by SqWin32SSL.c which i tried to add manually, to make it compile, but then on linking stage it fails with following: Creating library file: c:/COG/blessed/results/libSqueakSSL.dll.a CMakeFiles/SqueakSSL.dir/objects.a(sqWin32SSL.c.obj):sqWin32SSL.c:(.text+0x4d0): undefined reference to `CertFindRDNAttr@8' CMakeFiles/SqueakSSL.dir/objects.a(sqWin32SSL.c.obj):sqWin32SSL.c:(.text+0x508): undefined reference to `CertRDNValueToStr' of course, because libcrypt.dll.a file which also part of mingw seems to be missing exports for these symbols. unless there is workaround to not call these function(s) i don't see what can be done, at least by me. maybe updating mingw could solve that problem.. ---------------- Name: CMakeVMMaker-IgorStasenko.171 Author: IgorStasenko Time: 5 July 2012, 5:43:02.685 pm UUID: 542b4f30-481c-754e-adc6-df26d22df280 Ancestors: CMakeVMMaker-EstebanLorenzano.170 - added configuration for ssl plugin on windows (but it doesn't builds on my mingw installation, a lot of missing definitions in Wincrypt.h ) To try it, use ------- CogWindowsConfig new addExternalPlugins: #( SqueakSSLPlugin ); generateSources; generate -- Best regards, Igor Stasenko.