CODEWITHSUNDEEP
pythonpipinstallationglpk
Sato
Sato

Reputation: 1133

Installing pyglpk package on Windows10

I don't have much knowledge for technical details of installing packages, etc, so this might be a stupid question. I simply first downloaded GLPK and added it to the path, and then tried to install pyglpk through pip install glpk, which gives the following error messages:

Collecting glpk
  Using cached https://files.pythonhosted.org/packages/74/e0/8676d8d5404a8f9aee298985d21aae67b776476b01583ff1a3e0030e2f51/glpk-0.4.5.tar.gz
  Installing build dependencies ... done
  Getting requirements to build wheel ... done
    Preparing wheel metadata ... done
Building wheels for collected packages: glpk
  Building wheel for glpk (PEP 517) ... error
  ERROR: Complete output from command 'C:\Users\User\Anaconda3\python.exe' 'C:\Users\User\Anaconda3\lib\site-packages\pip\_vendor\pep517\_in_process.py' build_wheel 'C:\Users\User\AppData\Local\Temp\tmpzvxrzwqg':
  ERROR: running bdist_wheel
  running build
  running build_ext
  building 'glpk' extension
  creating build
  creating build\temp.win-amd64-3.7
  creating build\temp.win-amd64-3.7\Release
  creating build\temp.win-amd64-3.7\Release\src
  C:\Program Files (x86)\Microsoft Visual Studio\2017\BuildTools\VC\Tools\MSVC\14.15.26726\bin\HostX86\x64\cl.exe /c /nologo /Ox /W3 /GL /DNDEBUG /MD -DVERSION_NUMBER="0.4.5" -IC:\Users\User\Anaconda3\include -IC:\Users\User\Anaconda3\include "-IC:\Program Files (x86)\Microsoft Visual Studio\2017\BuildTools\VC\Tools\MSVC\14.15.26726\include" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.17134.0\ucrt" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.17134.0\shared" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.17134.0\um" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.17134.0\winrt" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.17134.0\cppwinrt" /Tcsrc\glpk.c /Fobuild\temp.win-amd64-3.7\Release\src\glpk.obj
  glpk.c
  c:\users\user\appdata\local\temp\pip-install-m71t9t2y\glpk\src\lp.h(24): fatal error C1083: Cannot open include file: 'glpk.h': No such file or directory
  error: command 'C:\\Program Files (x86)\\Microsoft Visual Studio\\2017\\BuildTools\\VC\\Tools\\MSVC\\14.15.26726\\bin\\HostX86\\x64\\cl.exe' failed with exit status 2
  ----------------------------------------
  ERROR: Failed building wheel for glpk
  Running setup.py clean for glpk
Failed to build glpk
ERROR: Could not build wheels for glpk which use PEP 517 and cannot be installed directly

I tried to search for different installation tutorials or questions online, but most of them are for Linux/MacOS, but not for Windows. What can I do about this?

Upvotes: 2

Views: 3733

Answers (3)

Ted Petrou
Ted Petrou

Reputation: 62037

The answers above give partial clues, but are incomplete.

  1. Download and unzip the pre-compiled binaries from the GLPK for Windows sourceforge.
  2. Within the unzipped folder, move the src\glpk.h file into your Include directory. If using Anaconda, this is C:\Users\User\Anaconda3\include. If using standard Python with a virtual environment, it will be the Include directory within your virtual environment. If using base Python, C:\Users\<user>\AppData\Local\Programs\Python\Python312\include.
  3. Depending on your system, navigate to the w64 or w32 directory of the unzipped download and copy the glpk_4_65.lib file (it might be named differently if there is a new version). Paste it into the libs directory, which will be found in the same level as the include directory from above. Rename this file glpk.lib. Create the libs directory if it does not exist.
  4. Back in w64/w32, move all of the .dll files (I believe there are four) into C:\Windows\System32.
  5. pip install glpk
  6. import glpk and test with the simple example from the docs.
  7. Optionally, you can move the w64 or w32 folder to C:\Windows\System32 and rename it GLPK and then add C:\Windows\System32\GLPK to you path so that you have access to glpsol from the command line.

Upvotes: 0

Tom Minka
Tom Minka

Reputation: 789

It is looking for glpk.h in the folder C:\Users\User\Anaconda3\include. You can make the installation succeed by copying glpk.h from the GLPK installation into that folder. You will also need to copy glpk.lib into C:\Users\User\Anaconda3\libs.

Upvotes: 0

Juan Jose Llano
Juan Jose Llano

Reputation: 1

I found a solution to run glpk in python without using PIP. I get the same issue and couldn't solve it with PIP.

First thing is download GLPK solver: https://sourceforge.net/projects/winglpk/ GLPK is based in C. You must check where is a file called glpsol.exe And add that directory to the path. look remarked txt in this image

After that you can run your pyomo model and select GLPK as your solver.

Upvotes: 0

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