Lesson 4 - is Mac OS 10.13 too old to run solcx?

[PaulHenstridge]

Hello, im getting a pretty long console log of errors, including the below:

Pauls-MacBook-Pro:w3_py_simple_storage paulhenstridge$ python3 deploy.py
dyld: lazy symbol binding failed: Symbol not found: ____chkstk_darwin
  Referenced from: /Users/paulhenstridge/.solcx/solc-v0.6.0 (which was built for Mac OS X 10.15)
  Expected in: /usr/lib/libSystem.B.dylib

IS this stuff too new for my trusty old macbook??

Downloaded binary would not execute, or returned unexpected output. If this issue persists, you can try to compile from source code using solcx.compile_solc('0.6.0').

I tried `compile_solc("0.6.0") instead of install_solc("0.6.0), but the terminal froze with a message about installing solidity dependencies for High Sierra.

Sorry if this is going off topic, but I would really appreciate any help to continue the course.

Thanks
Paul

[cromewar]

I think the python version is more related rather de OS you are using, somethings libraries could conflict with others so try to test the same script but into a virtual python environmet

python3 -m pip install virtualenv

create a new virtualenv with any name you want and install the libraries on that environment, then test again the project.

[PaulHenstridge]

Hi cromewar, thanks for your response.

I have run the project on a virtual env but I still get the same error. Here is the output in full:

dyld: lazy symbol binding failed: Symbol not found: ____chkstk_darwin
  Referenced from: /Users/paulhenstridge/.solcx/solc-v0.6.0 (which was built for Mac OS X 10.15)
  Expected in: /usr/lib/libSystem.B.dylib

dyld: Symbol not found: ____chkstk_darwin
  Referenced from: /Users/paulhenstridge/.solcx/solc-v0.6.0 (which was built for Mac OS X 10.15)
  Expected in: /usr/lib/libSystem.B.dylib

Traceback (most recent call last):
  File "/Users/paulhenstridge/Desktop/dev/w3/w3_py_simple_storage/v_env/lib/python3.9/site-packages/solcx/install.py", line 633, in _validate_installation
    installed_version = wrapper._get_solc_version(binary_path)
  File "/Users/paulhenstridge/Desktop/dev/w3/w3_py_simple_storage/v_env/lib/python3.9/site-packages/solcx/wrapper.py", line 17, in _get_solc_version
    stdout_data = subprocess.check_output([str(solc_binary), "--version"], encoding="utf8")
  File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/subprocess.py", line 424, in check_output
    return run(*popenargs, stdout=PIPE, timeout=timeout, check=True,
  File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/subprocess.py", line 528, in run
    raise CalledProcessError(retcode, process.args,
subprocess.CalledProcessError: Command '['/Users/paulhenstridge/.solcx/solc-v0.6.0', '--version']' died with <Signals.SIGABRT: 6>.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/Users/paulhenstridge/Desktop/dev/w3/w3_py_simple_storage/deploy.py", line 12, in <module>
    install_solc("0.6.0")
  File "/Users/paulhenstridge/Desktop/dev/w3/w3_py_simple_storage/v_env/lib/python3.9/site-packages/solcx/install.py", line 466, in install_solc
    raise exc
  File "/Users/paulhenstridge/Desktop/dev/w3/w3_py_simple_storage/v_env/lib/python3.9/site-packages/solcx/install.py", line 459, in install_solc
    _validate_installation(version, solcx_binary_path)
  File "/Users/paulhenstridge/Desktop/dev/w3/w3_py_simple_storage/v_env/lib/python3.9/site-packages/solcx/install.py", line 636, in _validate_installation
    raise SolcInstallationError(
solcx.exceptions.SolcInstallationError: Downloaded binary would not execute, or returned unexpected output. If this issue persists, you can try to compile from source code using `solcx.compile_solc('0.6.0')`.

And this is my .py script:

from solcx import compile_standard, install_solc

import json

with open("./SimpleStorage.sol", "r") as file:
    simple_storage_file = file.read()
    print(simple_storage_file)

    # COmpile the solidity

install_solc("0.6.0")

compiled_sol = compile_standard(
    {
        "language": "Solidity",
        "sources": {"SimpleStorage.sol": {"content": simple_storage_file}},
        "settings": {
            "outputSelection": {
                "*": {"*": ["abi", "metadata", "evm.bytecode", "evm.sourceMap"]}
            }
        },
    },
    solc_version="0.6.0",
)

print(compiled_sol)

# with open("compiled_code.json", "w") as file:
#     json.dump(compiled_sol, file)

I'm pretty new to Python, so at least I have learned about virtual environments today!

Any help or advise hugely appreciated!

Thanks :-)

[cromewar]

Try to install make and cmake, and try again

[PatrickAlphaC]

Could you jump in here and see if that solves it? #5

[PaulHenstridge]

Hi Patrick

Yes I saw that before I posted. I am importing install_solc from solcx and running it with '0.6.0'

from solcx import compile_standard, install_solc

import json

with open("./SimpleStorage.sol", "r") as file:
    simple_storage_file = file.read()
    print(simple_storage_file)

    # Compile the solidity

install_solc("0.6.0")

Appreciate you responding to this question.

[PatrickAlphaC]

It might be a mac version issue then :(

[PaulHenstridge]

Do you think the (older?) solc package might work?

[PatrickAlphaC]

Nope :/ You'll likely have to update your mac.

Why is it so outdated anyway?

[AlbertoSinigaglia]

Try removing solcx through pip and install a older version... however, which MacOS version are you using?... if you can't update, consider using docker, so that you can use a container with eg. latest Ubuntu, and so having a "new" OS without updating your pc or buy a new one (It should not be that difficult since you only need a python env)