• Registered: 2026-03-28
  • Posts: 2

Topic: how to build wolfssl for gnu-efi?

I am trying to use wolfssl in my vs gnu-efi project. What are the steps for GNU-EFI ?

Thank you.

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  • Registered: 2021-08-12
  • Posts: 173

Re: how to build wolfssl for gnu-efi?

Have you had a look at https://github.com/wolfSSL/wolfssl-exam … efi-static and https://github.com/wolfSSL/wolfssl-exam … fi-library ?

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  • Registered: 2026-03-28
  • Posts: 2

Re: how to build wolfssl for gnu-efi?

anthony wrote:

Have you had a look at https://github.com/wolfSSL/wolfssl-exam … efi-static and https://github.com/wolfSSL/wolfssl-exam … fi-library ?

Yes I checked it. Made an .efi (examples/uefi-library/libwolfcrypt.efi) with WSL. I got the main library in examples/uefi-static/... Used: make on WSL. Got wolfssl folder as .sln project. Here I built the project and got the .lib but when I reference it from gnu-efi project (#include <wolfssl/ssl.h>), I get many errors from file WinUser.h


I think I am missing something or that .sln project is not auto configured for gnu-efi environment?

Can you explain it?

[NOTE:My purpose is sending https requests on efi]

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  • Registered: 2019-09-09
  • Posts: 14

Re: how to build wolfssl for gnu-efi?

Hi
The examples don't show how to build TLS protocols for EFI,  only wolfCrypt (cryptography algorithms implementation).

For the purpose described, (https server) you need to connect wolfSSL to a transport layer (typically a TCP/IP stack with its own drivers etc.)

>  I get many errors from file WinUser.h

This sounds windows specific, perhaps your IDE is configuring a windows project which is not compatible with EFI. You will have to create a user_settings.h file specific for EFI, assign a transport via custom I/O callbacks (e.g. a TCP/IP stack) and then compile against gnuefi (not against your OS libraries).

Suggest: make a working HTTP server first, then upgrade to HTTPS by linking wolfSSL once you have your sockets working.

We don't have a port for EFI yet, but if you have drivers for your interrface you may want to try and port wolfIP (https://github.com/wolfssl/wolfip) to gnu-efi,  There is a simple REST HTTPS server included there

Regards,

--
Daniele  (wolfSSL)

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