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not found python library in msys2 #3167

welitonfreitas opened this Issue Jan 2, 2018 · 2 comments


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welitonfreitas commented Jan 2, 2018

on msys2 with python 3.6.4 returned this error:

158153 INFO: Python library not in binary dependencies. Doing additional searching...
Traceback (most recent call last):
  File "C:\msys32_2\mingw32\bin\", line 11, in <module>
    load_entry_point('PyInstaller==3.3.1', 'console_scripts', 'pyinstaller')()
  File "C:/msys32_2/mingw32/lib/python3.6/site-packages\PyInstaller\", line 94, in run
    run_build(pyi_config, spec_file, **vars(args))
  File "C:/msys32_2/mingw32/lib/python3.6/site-packages\PyInstaller\", line 46, in run_build
    PyInstaller.building.build_main.main(pyi_config, spec_file, **kwargs)
  File "C:/msys32_2/mingw32/lib/python3.6/site-packages\PyInstaller\building\", line 791, in main
    build(specfile, kw.get('distpath'), kw.get('workpath'), kw.get('clean_build'))
  File "C:/msys32_2/mingw32/lib/python3.6/site-packages\PyInstaller\building\", line 737, in build
    exec(text, spec_namespace)
  File "<string>", line 15, in <module>
  File "C:/msys32_2/mingw32/lib/python3.6/site-packages\PyInstaller\building\", line 213, in __init__
  File "C:/msys32_2/mingw32/lib/python3.6/site-packages\PyInstaller\building\", line 161, in __postinit__
  File "C:/msys32_2/mingw32/lib/python3.6/site-packages\PyInstaller\building\", line 545, in assemble
  File "C:/msys32_2/mingw32/lib/python3.6/site-packages\PyInstaller\building\", line 629, in _check_python_library
    raise IOError(msg)
OSError: Python library not found: python36.dll, libpython3.6.dll
This would mean your Python installation doesn't come with proper library files.
This usually happens by missing development package, or unsuitable build parameters of Python installation.

* On Debian/Ubuntu, you would need to install Python development packages
  * apt-get install python3-dev
  * apt-get install python-dev
* If you're building Python by yourself, please rebuild your Python with `--enable-shared` (or, `--enable-framework` on Darwin)

in the msys enviroment exist only libpythonX.Xm.dll like cygwin


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OzymandiasTheGreat commented Jan 17, 2018

Having this issue. Tried installing development version from github but the issue persists.


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htgoebel commented Mar 13, 2018

The pull-request solving this has jsut been merged. Please try the current development version.

Closing since I assume this is fixed.

@htgoebel htgoebel closed this Mar 13, 2018

@htgoebel htgoebel added this to the PyInstaller 3.4 milestone Sep 2, 2018

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