No use for applink.c OPENSSL_Applink, everything is compiled with the same MSVC --- python3/PCbuild/_ssl.vcxproj.orig2 2019-12-23 15:54:19.254298900 +0100 +++ python3/PCbuild/_ssl.vcxproj 2019-12-23 15:54:24.693251200 +0100 @@ -67,9 +67,6 @@ </ItemDefinitionGroup> <ItemGroup> <ClCompile Include="..\Modules\_ssl.c" /> - <ClCompile Include="$(opensslIncludeDir)\applink.c"> - <PreprocessorDefinitions>_CRT_SECURE_NO_WARNINGS;$(PreprocessorDefinitions)</PreprocessorDefinitions> - </ClCompile> </ItemGroup> <ItemGroup> <ResourceCompile Include="..\PC\python_nt.rc" /> --- python3/PCbuild/openssl.props.orig 2019-12-23 16:20:34.588135900 +0100 +++ python3/PCbuild/openssl.props 2019-12-23 16:20:51.074001300 +0100 @@ -10,9 +10,7 @@ </Link> </ItemDefinitionGroup> <PropertyGroup> - <_DLLSuffix>-1_1</_DLLSuffix> - <_DLLSuffix Condition="$(Platform) == 'ARM'">$(_DLLSuffix)-arm</_DLLSuffix> - <_DLLSuffix Condition="$(Platform) == 'ARM64'">$(_DLLSuffix)-arm64</_DLLSuffix> + <_DLLSuffix>-3</_DLLSuffix> </PropertyGroup> <ItemGroup> <_SSLDLL Include="$(opensslOutDir)\libcrypto$(_DLLSuffix).dll" />