0007-Adjust-library-header-paths-for-cross-compilation.patch 2.8 KB

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  1. From f3e0a677c4736f95338825a022a884f8dc7a5c14 Mon Sep 17 00:00:00 2001
  2. From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
  3. Date: Tue, 7 Mar 2017 22:22:19 +0100
  4. Subject: [PATCH] Adjust library/header paths for cross-compilation
  5. When cross-compiling third-party extensions, the get_python_inc() or
  6. get_python_lib() can be called, to return the path to headers or
  7. libraries. However, they use the sys.prefix of the host Python, which
  8. returns incorrect paths when cross-compiling (paths pointing to host
  9. headers and libraries).
  10. In order to fix this, we introduce the _python_sysroot, _python_prefix
  11. and _python_exec_prefix variables, that allow to override these
  12. values, and get correct header/library paths when cross-compiling
  13. third-party Python modules.
  14. The _python_sysroot variable is also used to prefix the LIBDIR value
  15. taken from the sysconfigdata module.
  16. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
  17. ---
  18. Lib/distutils/command/build_ext.py | 5 ++++-
  19. Lib/distutils/sysconfig.py | 9 +++++++--
  20. 2 files changed, 11 insertions(+), 3 deletions(-)
  21. diff --git a/Lib/distutils/command/build_ext.py b/Lib/distutils/command/build_ext.py
  22. index 2c68be3..375b08c 100644
  23. --- a/Lib/distutils/command/build_ext.py
  24. +++ b/Lib/distutils/command/build_ext.py
  25. @@ -240,7 +240,10 @@ class build_ext (Command):
  26. if (sysconfig.get_config_var('Py_ENABLE_SHARED')):
  27. if not sysconfig.python_build:
  28. # building third party extensions
  29. - self.library_dirs.append(sysconfig.get_config_var('LIBDIR'))
  30. + libdir = sysconfig.get_config_var('LIBDIR')
  31. + if "_python_sysroot" in os.environ:
  32. + libdir = os.environ.get("_python_sysroot") + libdir
  33. + self.library_dirs.append(libdir)
  34. else:
  35. # building python standard extensions
  36. self.library_dirs.append('.')
  37. diff --git a/Lib/distutils/sysconfig.py b/Lib/distutils/sysconfig.py
  38. index d72b6e5..72151df 100644
  39. --- a/Lib/distutils/sysconfig.py
  40. +++ b/Lib/distutils/sysconfig.py
  41. @@ -19,8 +19,13 @@ import sys
  42. from distutils.errors import DistutilsPlatformError
  43. # These are needed in a couple of spots, so just compute them once.
  44. -PREFIX = os.path.normpath(sys.prefix)
  45. -EXEC_PREFIX = os.path.normpath(sys.exec_prefix)
  46. +if "_python_sysroot" in os.environ:
  47. + _sysroot=os.environ.get('_python_sysroot')
  48. + PREFIX = os.path.normpath(_sysroot + os.environ.get('_python_prefix'))
  49. + EXEC_PREFIX = os.path.normpath(_sysroot + os.environ.get('_python_exec_prefix'))
  50. +else:
  51. + PREFIX = os.path.normpath(sys.prefix)
  52. + EXEC_PREFIX = os.path.normpath(sys.exec_prefix)
  53. # Path to the base directory of the project. On Windows the binary may
  54. # live in project/PCBuild9. If we're dealing with an x64 Windows build,
  55. --
  56. 2.7.4