OpenSSL fatal error LNK1112: module machine type 'x86' conflicts with target machine type 'x64

user_14827642 0
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I'm encountering a very frustrating error while trying to build OpenSSL on Windows 10. The error I get is

"lib" /nologo /out:providers\libdefault_static.lib @C:\Users\jcava\AppData\Local\Temp\nmF1AF.tmp
providers\common\libdefault-lib-bio_prov.obj : fatal error LNK1112: module machine type 'x86' conflicts with target machine type 'x64

The steps I'm doing are running perl Configure VC-WIN64A then nmake both within the openssl directory that I cloned from Github. Im running all of this within a x64 command line prompt for VS 2019.

Cheers, James

openssl 64-bit visual-c++ windows
2 Answers

For x64 you have to run your perl Configure and nmake commands from x64 Native Tools Command Prompt for VS 201x, not the Developer Command Prompt for VS 201x.

You can search for it in your Windows search bar. Make sure to right click it and run it in administrator mode.

If you've already compiled it incorrectly, you probably have to delete openssl and clone it again. Deleting the .obj files didn't solve it for me.

Source

user_5910970

I had similar problem. It means that there are some object files that have been compiled already using x86 (in this case). Perhaps you started off using the x86 compiler.

If you delete all the object files (type del /S *.obj in your openssl directory) then run nmake again it should compile fine.

Alternatively you could re-clone the repository and start again.

user_96101800
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