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File "numpy\core\setup.py", line 655, in get_mathlib_info raise RuntimeError("Broken toolchain: cannot link a simple C program") RuntimeError: Broken toolchain: cannot link a simple C program

Running python 3.9 64 bit W10

Trying to pip install numpy through the command prompt.

I found two recommended solutions and I've tried both

I installed windows sdk and added mt.exe to the path I also installed Visual Studio 2019.

Problem still persists.

phantom234234
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  • I think need to try with python 3.8 – Timur U Oct 06 '20 at 18:47
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    Python 3.9 has only just been released. Use `pip install pipwin`, then `pipwin install numpy` for now, to get the binary wheels provided by Gohlke, until Numpy builds wheels for 3.9. – Martijn Pieters Oct 08 '20 at 15:42
  • holy crap thank you Martjin; finally found the right solution after hours of trying to install numpy. Why is it so hard to install numpy... – pete Oct 11 '21 at 05:25

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