Hello, I'm trying to build PJSIP and its Python bindings on Arch Linux. The former builds successfully, but the latter fails. Arch has Python 3.7 in its repos, but the bindings' Makefile expects Python 3.6. I have attached a patch which addresses this issue by asking the actual python executable (either `python2` or `python3`) which version it has. The second hunk of the attached patch makes the installation process honor the `DESTDIR` variable. This is most often used by packaging tools, which is why I simply disallow the "uninstall" target if DESTDIR is non-empty - uninstalling makes no sense in that context. Adding ` --optimize=1` here is recommended by Arch's python packaging guidelines, as it allows the package manager to track the compiled files. The next problem lies within the bindings themselves. Python 3.7 introduces the keyword "async", which means this can no longer be used as variable name. Attempting to do so results in the following error (both with release 2.8 as well as latest SVN): make[1]: Entering directory '/build/pjproject-svn/src/pjproject/pjsip-apps/src/swig/python' if [ "/build/pjproject-svn/pkg/python-pjproject-svn" ]; then \ python3 setup.py install --root="/build/pjproject-svn/pkg/python-pjproject-svn/" --optimize=1; \ else \ python3 setup.py install --user; \ fi running install running build running build_py running build_ext running install_lib creating /build/pjproject-svn/pkg/python-pjproject-svn/usr creating /build/pjproject-svn/pkg/python-pjproject-svn/usr/lib creating /build/pjproject-svn/pkg/python-pjproject-svn/usr/lib/python3.7 creating /build/pjproject-svn/pkg/python-pjproject-svn/usr/lib/python3.7/site-packages copying build/lib.linux-x86_64-3.7/pjsua2.py -> /build/pjproject-svn/pkg/python-pjproject-svn/usr/lib/python3.7/site-packages copying build/lib.linux-x86_64-3.7/_pjsua2.cpython-37m-x86_64-linux-gnu.so -> /build/pjproject-svn/pkg/python-pjproject-svn/usr/lib/python3.7/site-packages byte-compiling /build/pjproject-svn/pkg/python-pjproject-svn/usr/lib/python3.7/site-packages/pjsua2.py to pjsua2.cpython-37.pyc writing byte-compilation script '/tmp/tmpakk7h67h.py' /usr/bin/python3 /tmp/tmpakk7h67h.py File "usr/lib/python3.7/site-packages/pjsua2.py", line 7595 async = _swig_property(_pjsua2.OnCallRxReinviteParam_async_get, _pjsua2.OnCallRxReinviteParam_async_set) ^ SyntaxError: invalid syntax removing /tmp/tmpakk7h67h.py running install_egg_info Writing /build/pjproject-svn/pkg/python-pjproject-svn/usr/lib/python3.7/site-packages/pjsua2-2.8_svn-py3.7.egg-info File "usr/lib/python3.7/site-packages/pjsua2.py", line 7595 async = _swig_property(_pjsua2.OnCallRxReinviteParam_async_get, _pjsua2.OnCallRxReinviteParam_async_set) ^ SyntaxError: invalid syntax make[1]: Leaving directory '/build/pjproject-svn/src/pjproject/pjsip-apps/src/swig/python' I hope that this can be resolved quickly; don't hesitate to ask if you need any more information. ~ Wüstengecko