Question: I was installing Odoo 15 inside a Python virtual environment on Ubuntu 20.04. I've downloaded Odoo from the official GitHub repository and use Nginx as a reverse proxy. after following the documentation to install and set up odoo in ubuntu 22.04, I did followed this how-to-do doc in this link I get this error the moment I do install pip packages using the command pip install -r requirement.txt any help please. 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 <lber.h> | ^~~~~~~~ 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 

Answer: 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