Windows: fatal error C1083: Cannot open include file: 'qdldl_types.h'

[osqp]

Windows: fatal error C1083: Cannot open include file: 'qdldl_types.h'

[stephane-caron]

@WCHIHO I have just tried installing from PyPI from Microsoft Visual Studio Community 2022 (Tools → Python → Python Environments) and the installation was successful for both the Python 3.8 and Python 3.9 environments.

It seems you are using an older version of MVSC. Is your Python version >= 3.8?

It seems the qdldl wheels are not available for older versions of Python, which would explain this build error.

[WCHIHO]

Hello, Thank you for your helpful replies. You are right. My existing python package is 3.8.8 whilst I use Jupyter notebook and VS Code to run the programmes. I immediately updated my python package to 3.10. I then used VS Code to run “pip install qpsolvers”. The installation process was much complex and lengthy. It kept going down the scipy version from say 1.56 to 1.40. Eventually the installation was successful. The results can be described below: PS D:\> pip install qpsolvers Requirement already satisfied: qpsolvers in c:\users\wchih\appdata\local\programs\python\python310-32\lib\site-packages (1.7.0) Requirement already satisfied: quadprog>=0.1.8 in c:\users\wchih\appdata\local\programs\python\python310-32\lib\site-packages (from qpsolvers) (0.1.10) Requirement already satisfied: numpy in c:\users\wchih\appdata\local\programs\python\python310-32\lib\site-packages (from quadprog>=0.1.8->qpsolvers) (1.21.4) I also checked the results in Jupyter Notebook using “!pip list”: Package Version

…

---------- ------- numpy 1.21.4 pip 21.3.1 pybind11 2.8.1 qpsolvers 1.7.0 quadprog 0.1.10 setuptools 58.5.3 wheel 0.37.0 Well, I noted my Juypter Notebook is still using python 3.8.8: You are using Jupyter notebook. The version of the notebook server is: 6.3.0 The server is running on this version of Python: Python 3.8.8 (default, Apr 13 2021, 15:08:07) [MSC v.1916 32 bit (Intel)] When I ran in Jupyter Notebook “from qpsolvers import solve_qp”, I got this error: ModuleNotFoundError Traceback (most recent call last) <ipython-input-20-b46fa005102a> in <module> ----> 1 from qpsolvers import solve_qp ModuleNotFoundError: No module named 'qpsolvers' So, I used Visual Studio Code to run your programme: rom numpy import array, dot from qpsolvers import solve_qp M = array([[1., 2., 0.], [-8., 3., 2.], [0., 1., 1.]]) P = dot(M.T, M) # this is a positive definite matrix q = dot(array([3., 2., 3.]), M).reshape((3,)) G = array([[1., 2., 1.], [2., 0., 1.], [-1., 2., -1.]]) h = array([3., 2., -2.]).reshape((3,)) A = array([1., 1., 1.]) b = array([1.]) x = solve_qp(P, q, G, h, A, b) print("QP solution: x = {}".format(x)) But, I got the same error as in Jupyter Notebook: “from qpsolvers import solve_qp ModuleNotFoundError: No module named 'qpsolvers'” This is strange because 'qpsolvers' has been successfully installed. Can you enlighten me as to what is going on here? Should I use another terminal to run your programme given that 'qpsolvers' is installed? By the way which terminal you use to run your 'qpsolvers' programme? I have thought about using Visual Studio Community 2019. But, I have not tried it. Many thanks. It is appreciated. Kindest regards, William From: Stéphane Caron ***@***.*** Sent: 11 November 2021 09:42 To: Browse osqp/qdldl Files... Cc: Browse William Chi Ho Chan Files...; Browse Mention Files... Subject: Re: [osqp/qdldl] Windows: fatal error C1083: Cannot open include file: 'qdldl_types.h' (Issue #42) @WCHIHO <https://github.com/WCHIHO> I have just tried installing from PyPI from Microsoft Visual Studio Community 2022 (Tools → Python → Python Environments) and the installation was successful for both the Python 3.8 and Python 3.9 environments. It seems you are using an older version of MVSC. Is your Python version >= 3.8? It seems the qdldl wheels are not available for older versions of Python, which would explain this build error. — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#42 (comment)> , or unsubscribe <https://github.com/notifications/unsubscribe-auth/ACSYP3IP4W6DFCTTEYWPQDDULOFWDANCNFSM5HZ64N5Q> . Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub> . <https://github.com/notifications/beacon/ACSYP3KYMOW6UXQLFABDWBDULOFWDA5CNFSM5HZ64N52YY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOHGLFPZI.gif>

[stephane-caron]

OK, then the issue is not related to qdldl any more. Let's close this and continue with your issue at qpsolvers/qpsolvers#48