Unable to install on Windows 10: fatal error C1083: Cannot open include file: 'lber.h'

[Aminot1]

Unable to install on Windows 10, I tried

Issue description:
Whenever I run: pip install python-ldap
I get the following:

c:\users\user\appdata\local\temp\pip-install-652a07b0\python-ldap\modules\constants.h(7): fatal error C1083: Cannot open include file: 'lber.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\x86\cl.exe' failed with exit status 2

----------------------------------------

Command ""c:\program files (x86)\python36-32\python.exe" -u -c "import setuptools, tokenize;file='C:\Users\user\AppData\Local\Temp\pip-install-652a07b0\python-ldap\setup.py';f=getattr(tokenize, 'open', open)(file);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, file, 'exec'))" install --record C:\Users\user\AppData\Local\Temp\pip-record-09ceypm_\install-record.txt --single-version-externally-managed --compile" failed with error code 1 in C:\Users\user\AppData\Local\Temp\pip-install-652a07b0\python-ldap\

• I tried installing http://www.lfd.uci.edu/~gohlke/pythonlibs/#pyldap:
  pip install pyldap-3.0.0-py2.py3-none-any.whl
  and got:

pyldap-3.0.0-py2.py3-none-any.whl is not a supported wheel on this platform.

• Also looked into requirements: https://www.python-ldap.org/en/latest/installing.html#build-prerequisites
  I downloaded the OpenLDAP client libs but didn't know where to place it's folder ?

Steps to reproduce:
pip install python-ldap

Operating system: Windows 10, version 1803, OS Build 171134.285
Python version: Python 3.6.5

python-ldap version: None

Any ideas how to proceed ?

[encukou]

If you're using Christoph Gohlke's packages, you want to get python-ldap, not pyldap.

I'm not familiar with installing python-ldap from source on Windows.

[Aminot1]

yes I am trying either of them, same issue.

[tiran]

None of the python-ldap maintainers is a Windows developer. We all work on Linux or similar platforms and are unable to assist.

By the way, a python-ldap build with just OpenLDAP bindings is pretty much useless these days. You also need OpenSSL and libsasl. SASL also depends on Kerberos bindings. Good luck...

[encukou]

If you figure it out, please let us know so we can add some instructions to documentation.

[Aminot1]

thanks guys, will keep that in mind, however, if you are aware of any other packages to connect to Active Directory using Python 3 on Windows, please let me know.

[encukou]

I've heard of ldap3, but never used it.

[Aminot1]

yes thanks @encukou , I tried it and it's working well, thank you.

[nickolay]

This issue is among the top results on Google for the 'lber.h' error. I felt I should mention that despite python-ldap maintainers not using Windows, the package has a non-trivial amount of people using it on Windows, judging from the stackoverflow activity.

While I didn't find up-to-date build instructions easily, there are prebuilt whl files that worked for me:
https://stackoverflow.com/a/58235938/1026

[encukou]

We'd also welcome anyone interested in being a Windows maintainer, or just anyone who could write up better Windows build instructions for the documentation.

[pBogey]

This issue is among the top results on Google for the 'lber.h' error. I felt I should mention that despite python-ldap maintainers not using Windows, the package has a non-trivial amount of people using it on Windows, judging from the stackoverflow activity.

While I didn't find up-to-date build instructions easily, there are prebuilt whl files that worked for me:
https://stackoverflow.com/a/58235938/1026

Thanks, this also worked for me.

Using PyCharm, I must note that this thread was also useful in upgrading pip.

[spinone]

I had all the same issues when trying to install windapsearch on Windows 10. Turns out that the Windows version of Python3 was 32 bit and the python-ldap module needed 64 bit. To find the architecture, I ran (using python3)
import struct
print(struct.calcsize("P") * 8)
I then installed the 32 bit version of python-ldap from https://www.lfd.uci.edu/~gohlke/pythonlibs/#python-ldap .
These are pre-compiled wheel files, which are installed as:
pip install path\to\your.whl
You may need to use path-to-pip for the python3 version of pip.

[kidjohnson]

Today i had the same issue running pip install python-ldap

fatal error C1083: Cannot open include file: 'lber.h': No such file or directory        
    error: command 'C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\BuildTools\\VC\\Tools\\MSVC\\14.26.28801\\bin\\HostX86\\x86\\cl.exe' failed with exit status 2

In my case, I was installing python-ldap because i needed django-auth-ldap, that requires python-ldap.

The workaround was to use django-python3-ldap instead of django-auth-ldap.

[Torxed]

Cannot open include file: 'lber.h': No such file or directory is because you need the OpenLDAP libraries installed on your system. So first step is to build those (or install them if you trust a pre-built binary).

Either way, building on windows is a PITA. Better use another library or a pre-built version linked from the official docs (and trust the trust chain in that the developers of python-ldap trusts whomever they link to).

For future reference: https://stackoverflow.com/questions/40018405/cannot-open-include-file-io-h-no-such-file-or-directory and pyldap/pyldap#67