I tried to compile my program on my PC using crystal build src/main.cr -p -s --release but after uploading the result binary to my low RAM server I got this message when I tried to execute it: ./main: CPU ISA level is lower than required At that moment I tried to compile the program using either: …

Thanks, that did the trick. I used crystal build src/main.cr --mcpu=znver3 --cross-compile, uploaded the generated object and linked the object inside the VPS using the command that crystal build src/main.cr --mcpu=znver3 --cross-compile outputs (cc main.o -o main -rdynamic ...) crystal build src/…

In my computer I can generate different versions and it works well. Maybe some required lib was compiled using a v4 target?

Are you sure this error message is coming from the Crystal part of the program? According to a quick google search the error might be coming from an incompatible version of glibc. You could check that by executing the dynamically linked libc library on your target system. You can get the path via l…

Correction: If I interpret the C code that prints this error correctly, the prefix ./main should tell us that the error is on the executable, not a library. Not 100% certain, it would still be useful to do the test. Assuming it’s an issue with the Crystal code, you may need to be more specific with…

A Ryzen 9 of 3rd generation. It’s a VPS but that is the processor that it has assigned to it. My PC has a i7-11850H and there is where I compile the program

When executing libc on my PC, I get this: GNU C Library (GNU libc) stable release version 2.39. Copyright (C) 2024 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. Com…

$ crystal build src/main.cr --release --mcpu=zenver3 ✘ 'zenver3' is not a recognized processor for this target (ignoring processor) 'zenver3' is not a recognized processor for this target (ignoring processor) 'z…

Static linking is completely unrelated and won’t fix any issues with Crystal codegen not working for your target CPU.

Sorry, I forgot to mention but you need to add --cross-compile because you’re explicitly building for a different CPU than the host. In this mode the compiler prints a linker command which you need to execute. It might work fine to run it on the host and upload the final executable. But the proper …

Yeah this doesn’t seem to work too. $ crystal build src/main.cr --mcpu=zenver3 --cross-compile 'zenver3' is not a recognized processor for this target (ignoring processor) 'zenver3' is not a recognized processor for this target (ignoring processor) 'zenver3' is not a recognized processor for this …

Result binary issues: CPU ISA level is lower than required

Help & Support

straight-shoota May 20, 2024, 7:17pm 6

You might want to try --mcpu=zenver3 then.

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Result binary issues: CPU ISA level is lower than required

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