Use Microsoft's nmake, not dmake. The VC-WIN32 configuration generates makefiles for use with nmake, which is included with Visual C. You told the OpenSSL build process to configure itself for Visual C (the "VC" part); now you have to use it. If you want to build OpenSSL using some custom toolchain of your own devising, you'll need to create your own configuration, including all the necessary rules and files. I do not recommend it. Michael Wojcik Distinguished Engineer, Micro Focus -- openssl-users mailing list To unsubscribe: https://mta.openssl.org/mailman/listinfo/openssl-users