[Scons-users] Compiling with Scons on Mac arm64

[Paola Ferrario]

Hi, you are totally right! I checked and I was activating a conda enviroment that was still the x86_64 one and I was using the SCons installed in that environment. I installed the arm64 conda environment, installed SCons there and everything works fine now.

Do you recommend not to import the whole environment as a safety rule?

Thank you and Bill a lot for your help!

Paola

> On 2 Feb 2022, at 18:56, Mats Wichmann <mats at wichmann.us> wrote:
> 
> On 2/1/22 10:36, Paola Ferrario 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?
> 
> I wonder if it's picking up the incorrect arch from the shell
> environment, since your example imports "everything" from there:
> 
> env = Environment(variables=vars, ENV=os.environ)
> 
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