Helper class to determine the pybind11 include path The purpose of this class is to postpone importing pybind11 until it is actually installed, so that the ``get_include()`` method can be invoked.
| 8 | |
| 9 | # Adapted from https://github.com/pybind/python_example/blob/master/setup.py |
| 10 | class get_pybind_include(object): |
| 11 | """Helper class to determine the pybind11 include path |
| 12 | The purpose of this class is to postpone importing pybind11 |
| 13 | until it is actually installed, so that the ``get_include()`` |
| 14 | method can be invoked. """ |
| 15 | |
| 16 | def __init__(self, user=False, pep517=False): |
| 17 | self.user = user |
| 18 | self.pep517 = pep517 |
| 19 | |
| 20 | def __str__(self): |
| 21 | import os |
| 22 | import pybind11 |
| 23 | |
| 24 | interpreter_include_path = pybind11.get_include(self.user) |
| 25 | |
| 26 | if self.pep517: |
| 27 | # When pybind11 is installed permanently in site packages, the headers |
| 28 | # will be in the interpreter include path above. PEP 517 provides an |
| 29 | # experimental feature for build system dependencies. When installing |
| 30 | # a package from a source distribvution, first its build dependencies |
| 31 | # are installed in a temporary location. pybind11 does not return the |
| 32 | # correct path for this condition, so we glom together a second path, |
| 33 | # and ultimately specify them _both_ in the include search path. |
| 34 | # https://github.com/pybind/pybind11/issues/1067 |
| 35 | return os.path.abspath( |
| 36 | os.path.join( |
| 37 | os.path.dirname(pybind11.__file__), |
| 38 | "..", |
| 39 | "..", |
| 40 | "..", |
| 41 | "..", |
| 42 | "include", |
| 43 | os.path.basename(interpreter_include_path), |
| 44 | ) |
| 45 | ) |
| 46 | else: |
| 47 | return interpreter_include_path |
| 48 | |
| 49 | |
| 50 | # unix = default compiler name? |