Hi 

You need to install on your system the GCC compiler package and the package that includes the development libraries and header files needed to compile applications that use LDAP.

If you're on Ubuntu, try to install the package is called libldap2-dev

sudo apt-get install libsasl2-dev python-dev-is-python3 libldap2-dev libssl-dev

Regards

Building wheels for collected packages: python-ldap
  Building wheel for python-ldap (pyproject.toml) ... error
  error: subprocess-exited-with-error
  
  × Building wheel for python-ldap (pyproject.toml) did not run successfully.
  │ exit code: 1
  ╰─> [111 lines of output]
      /tmp/pip-build-env-rbfhnio_/overlay/lib/python3.10/site-packages/setuptools/config/setupcfg.py:516: SetuptoolsDeprecationWarning: The license_file parameter is deprecated, use license_files instead.
        warnings.warn(msg, warning_class)
      running bdist_wheel
      running build
      running build_py
      creating build
      creating build/lib.linux-x86_64-cpython-310
      copying Lib/ldapurl.py -> build/lib.linux-x86_64-cpython-310
      copying Lib/ldif.py -> build/lib.linux-x86_64-cpython-310
      creating build/lib.linux-x86_64-cpython-310/ldap
      copying Lib/ldap/resiter.py -> build/lib.linux-x86_64-cpython-310/ldap
      copying Lib/ldap/syncrepl.py -> build/lib.linux-x86_64-cpython-310/ldap
      copying Lib/ldap/__init__.py -> build/lib.linux-x86_64-cpython-310/ldap
      copying Lib/ldap/dn.py -> build/lib.linux-x86_64-cpython-310/ldap
      copying Lib/ldap/async.py -> build/lib.linux-x86_64-cpython-310/ldap
      copying Lib/ldap/sasl.py -> build/lib.linux-x86_64-cpython-310/ldap
      copying Lib/ldap/asyncsearch.py -> build/lib.linux-x86_64-cpython-310/ldap
      copying Lib/ldap/logger.py -> build/lib.linux-x86_64-cpython-310/ldap
      copying Lib/ldap/functions.py -> build/lib.linux-x86_64-cpython-310/ldap
      copying Lib/ldap/modlist.py -> build/lib.linux-x86_64-cpython-310/ldap
      copying Lib/ldap/constants.py -> build/lib.linux-x86_64-cpython-310/ldap
      copying Lib/ldap/ldapobject.py -> build/lib.linux-x86_64-cpython-310/ldap
      copying Lib/ldap/filter.py -> build/lib.linux-x86_64-cpython-310/ldap
      copying Lib/ldap/pkginfo.py -> build/lib.linux-x86_64-cpython-310/ldap
      copying Lib/ldap/cidict.py -> build/lib.linux-x86_64-cpython-310/ldap
      copying Lib/ldap/compat.py -> build/lib.linux-x86_64-cpython-310/ldap
      creating build/lib.linux-x86_64-cpython-310/ldap/controls
      copying Lib/ldap/controls/psearch.py -> build/lib.linux-x86_64-cpython-310/ldap/controls
      copying Lib/ldap/controls/sessiontrack.py -> build/lib.linux-x86_64-cpython-310/ldap/controls
      copying Lib/ldap/controls/simple.py -> build/lib.linux-x86_64-cpython-310/ldap/controls
      copying Lib/ldap/controls/__init__.py -> build/lib.linux-x86_64-cpython-310/ldap/controls
      copying Lib/ldap/controls/vlv.py -> build/lib.linux-x86_64-cpython-310/ldap/controls
      copying Lib/ldap/controls/sss.py -> build/lib.linux-x86_64-cpython-310/ldap/controls
      copying Lib/ldap/controls/libldap.py -> build/lib.linux-x86_64-cpython-310/ldap/controls
      copying Lib/ldap/controls/pagedresults.py -> build/lib.linux-x86_64-cpython-310/ldap/controls
      copying Lib/ldap/controls/pwdpolicy.py -> build/lib.linux-x86_64-cpython-310/ldap/controls
      copying Lib/ldap/controls/readentry.py -> build/lib.linux-x86_64-cpython-310/ldap/controls
      copying Lib/ldap/controls/deref.py -> build/lib.linux-x86_64-cpython-310/ldap/controls
      copying Lib/ldap/controls/ppolicy.py -> build/lib.linux-x86_64-cpython-310/ldap/controls
      copying Lib/ldap/controls/openldap.py -> build/lib.linux-x86_64-cpython-310/ldap/controls
      creating build/lib.linux-x86_64-cpython-310/ldap/extop
      copying Lib/ldap/extop/passwd.py -> build/lib.linux-x86_64-cpython-310/ldap/extop
      copying Lib/ldap/extop/__init__.py -> build/lib.linux-x86_64-cpython-310/ldap/extop
      copying Lib/ldap/extop/dds.py -> build/lib.linux-x86_64-cpython-310/ldap/extop
      creating build/lib.linux-x86_64-cpython-310/ldap/schema
      copying Lib/ldap/schema/__init__.py -> build/lib.linux-x86_64-cpython-310/ldap/schema
      copying Lib/ldap/schema/subentry.py -> build/lib.linux-x86_64-cpython-310/ldap/schema
      copying Lib/ldap/schema/tokenizer.py -> build/lib.linux-x86_64-cpython-310/ldap/schema
      copying Lib/ldap/schema/models.py -> build/lib.linux-x86_64-cpython-310/ldap/schema
      creating build/lib.linux-x86_64-cpython-310/slapdtest
      copying Lib/slapdtest/__init__.py -> build/lib.linux-x86_64-cpython-310/slapdtest
      copying Lib/slapdtest/_slapdtest.py -> build/lib.linux-x86_64-cpython-310/slapdtest
      running egg_info
      writing Lib/python_ldap.egg-info/PKG-INFO
      writing dependency_links to Lib/python_ldap.egg-info/dependency_links.txt
      writing requirements to Lib/python_ldap.egg-info/requires.txt
      writing top-level names to Lib/python_ldap.egg-info/top_level.txt
      reading manifest file 'Lib/python_ldap.egg-info/SOURCES.txt'
      reading manifest template 'MANIFEST.in'
      no previously-included directories found matching 'Doc/.build'
      adding license file 'LICENCE'
      writing manifest file 'Lib/python_ldap.egg-info/SOURCES.txt'
      /tmp/pip-build-env-rbfhnio_/overlay/lib/python3.10/site-packages/setuptools/command/build_py.py:202: SetuptoolsDeprecationWarning:     Installing 'slapdtest.certs' as data is deprecated, please list it in `packages`.
          !!
      
      
          ############################
          # Package would be ignored #
          ############################
          Python recognizes 'slapdtest.certs' as an importable package,
          but it is not listed in the `packages` configuration of setuptools.
      
          'slapdtest.certs' has been automatically added to the distribution only
          because it may contain data files, but this behavior is likely to change
          in future versions of setuptools (and therefore is considered deprecated).
      
          Please make sure that 'slapdtest.certs' is included as a package by using
          the `packages` configuration field or the proper discovery methods
          (for example by using `find_namespace_packages(...)`/`find_namespace:`
          instead of `find_packages(...)`/`find:`).
      
          You can read more about "package discovery" and "data files" on setuptools
          documentation page.
      
      
      !!
      
        check.warn(importable)
      creating build/lib.linux-x86_64-cpython-310/slapdtest/certs
      copying Lib/slapdtest/certs/README -> build/lib.linux-x86_64-cpython-310/slapdtest/certs
      copying Lib/slapdtest/certs/ca.conf -> build/lib.linux-x86_64-cpython-310/slapdtest/certs
      copying Lib/slapdtest/certs/ca.pem -> build/lib.linux-x86_64-cpython-310/slapdtest/certs
      copying Lib/slapdtest/certs/client.conf -> build/lib.linux-x86_64-cpython-310/slapdtest/certs
      copying Lib/slapdtest/certs/client.key -> build/lib.linux-x86_64-cpython-310/slapdtest/certs
      copying Lib/slapdtest/certs/client.pem -> build/lib.linux-x86_64-cpython-310/slapdtest/certs
      copying Lib/slapdtest/certs/gencerts.sh -> build/lib.linux-x86_64-cpython-310/slapdtest/certs
      copying Lib/slapdtest/certs/gennssdb.sh -> build/lib.linux-x86_64-cpython-310/slapdtest/certs
      copying Lib/slapdtest/certs/server.conf -> build/lib.linux-x86_64-cpython-310/slapdtest/certs
      copying Lib/slapdtest/certs/server.key -> build/lib.linux-x86_64-cpython-310/slapdtest/certs
      copying Lib/slapdtest/certs/server.pem -> build/lib.linux-x86_64-cpython-310/slapdtest/certs
      running build_ext
      building '_ldap' extension
      creating build/temp.linux-x86_64-cpython-310
      creating build/temp.linux-x86_64-cpython-310/Modules
      x86_64-linux-gnu-gcc -Wno-unused-result -Wsign-compare -DNDEBUG -g -fwrapv -O2 -Wall -g -fstack-protector-strong -Wformat -Werror=format-security -g -fwrapv -O2 -fPIC -DHAVE_SASL -DHAVE_TLS -DHAVE_LIBLDAP_R -DHAVE_LIBLDAP_R -DLDAPMODULE_VERSION=3.4.0 "-DLDAPMODULE_AUTHOR=python-ldap project" "-DLDAPMODULE_LICENSE=Python style" -IModules -I/opt/odoo15/odoo-venv/include -I/usr/include/python3.10 -c Modules/LDAPObject.c -o build/temp.linux-x86_64-cpython-310/Modules/LDAPObject.o
      In file included from Modules/LDAPObject.c:3:
      Modules/common.h:15:10: fatal error: lber.h: No such file or directory
         15 | #include 
            |          ^~~~~~~~
      compilation terminated.
      error: command '/usr/bin/x86_64-linux-gnu-gcc' failed with exit code 1
      [end of output]
  
  note: This error originates from a subprocess, and is likely not a problem with pip.
  ERROR: Failed building wheel for python-ldap
Failed to build python-ldap
ERROR: Could not build wheels for python-ldap, which is required to install pyproject.toml-based projects