Re: How do I change the compiler for libssh to a cross-compiler?

[Kristian Larsson <k@xxxxxxxxx>]

Hello,

we’re using libssh and compiling it using Zig. Zig is its own language but it also offers a compilation pipeline for C and C++ projects like libssh. Zig basically wraps clang so you mostly get clang behavior but one of the areas in which Zig shines is cross-compilation because Zig ships libc headers for like tons of libc versions and platforms. You need to write a build.zig, equivalent to a cmake config file. That said, clang isn’t great for all ARM platforms (there are some with custom gcc builds), so if that’s the case, zig is not a good option I suppose.

We have our mirror of libssh - https://github.com/actonlang/libssh/tree/zig-build - it has a very basic build.zig and it’s a little outdated but I reckon a git rebase will work fine. I just found https://github.com/thomashn/libssh - which looks more complete and up to date. You could give it a try.

Kind regards,
   Kristian.

> On 25 Jul 2025, at 21:41, Carl.Mohre@xxxxxxxxxxxx wrote:
> 
> I appreciate the couple of suggestions.  Nothing has worked so far.
>  
> To try a different path – is there a way to disable the ABI detection?  I get the following error:
>  
> “Detecting C compiler ABI info – failed”
>  
> I know my installation of the ARM toolchain is correct – I not only compiled a “Hello World”, my application, spdlog, OpenSSL, and zlib – all with no issues.  But, in order to use libssh, I need to get passed this error.
>  
> The A.I. engines keep offering suggestions on disabling this check – but none have worked.
>  
> Please – any ideas would be much appreciated.
>  
> Carl
>  
> From: Mohre, Carl (US) - SAS <Carl.Mohre@xxxxxxxxxxxx>
> Sent: Thursday, July 17, 2025 6:18 PM
> To: libssh@xxxxxxxxxx
> Cc: Mohre, Carl (US) - SAS <Carl.Mohre@xxxxxxxxxxxx>
> Subject: How do I change the compiler for libssh to a cross-compiler?
>  
> I only use Linux every 5th or 6th project – so I’m not very experienced with the more complex cmake files.
>  
> I’m simply trying to change the compiler your build system uses to the cross-compiler I need for my Enclustra SOM development kit.
>  
> Can you please help.
>  
> Thank you.
>  
> Carl L. Mohre II
> L5 Lead Electrical Engineer
> AHM IRAD Software Systems & Embedded Software Engineer
> SPACE & AIRBORNE SYSTEMS / L3HARRIS TECHNOLOGIES
> t +1 321 727 5794 / m +1 321 288 5266
> L3Harris.com / Carl.Mohre@xxxxxxxxxxxx <mailto:Carl.Mohre@xxxxxxxxxxxx>
> 2400 Palm Bay Rd NE / Palm Bay, FL 32905 / USA
> 
> <image001.png> <http://www.l3harris.com/>
>  
> 
>   
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