[Scons-users] Compiling with Scons on Mac arm64

[Paola Ferrario]

Hi Bill! Thank you for your answer!

I’m using:

SCons-4.0.1
python 3.6.8
MacOS Monterey 12.2, Apple M1 Pro
CommandLineTools 13
I don’t have XCode installed

I’ve created a toy project, as you suggested: https://github.com/paolafer/toy-nexus <https://github.com/paolafer/toy-nexus>. The only dependency is GEANT4 (https://geant4.web.cern.ch/support/download).

Let me know if there anything else I can provide!

Cheers

Paola

> On 1 Feb 2022, at 19:33, Bill Deegan <bill at baddogconsulting.com> wrote:
> 
> Paola,
> 
> We need more information.
> Which version of Python, SCons, xcode?
> 
> Can you provide a toy project in github to reproduce this issue?
> 
> Then we can see directly your SCons usage and help resolve the issue.
> 
> -Bill
> 
> On Tue, Feb 1, 2022 at 9:36 AM Paola Ferrario <paola.ferrario at dipc.org <mailto:paola.ferrario at dipc.org>> wrote:
> Hi all!
> I’m having a problem compiling my C++ application using Scons on a Mac with M1 processor. 
> Specifically, it seems that it tries to compile for a x86_64 architecture, since I see a lot of warnings such as 
> "warning: ignoring file ..., building for macOS-x86_64 but attempting to link with file built for macOS-arm64”
> when linking to third-party libraries, correctly compiled in the arm64 architecture. After the warnings, the compilation ends with error 
> “ld: symbol(s) not found for architecture x86_64”
> 
> I was wondering if there is a flag I can pass to the compiler to specify the architecture. I’ve tried with 
> 
> -arch=arm64
> 
> but it doesn’t work.
> What should I do?
> 
> Thank you and best regards
> 
> Paola
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