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buildroot/buildroot-2016.08.1/package/python/008-distutils-use-python-sysroot.patch 2.4 KB
6b13f685e   김민수   BSP 최초 추가
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  Adjust library/header paths for cross-compilation
  
  When cross-compiling third-party extensions, the get_python_inc() or
  get_python_lib() can be called, to return the path to headers or
  libraries. However, they use the sys.prefix of the host Python, which
  returns incorrect paths when cross-compiling (paths pointing to host
  headers and libraries).
  
  In order to fix this, we introduce the _python_sysroot, _python_prefix
  and _python_exec_prefix variables, that allow to override these
  values, and get correct header/library paths when cross-compiling
  third-party Python modules.
  
  The _python_sysroot variable is also used to prefix the LIBDIR value
  taken from the sysconfigdata module.
  
  Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
  
  Index: b/Lib/distutils/sysconfig.py
  ===================================================================
  --- a/Lib/distutils/sysconfig.py
  +++ b/Lib/distutils/sysconfig.py
  @@ -19,8 +19,13 @@
   from distutils.errors import DistutilsPlatformError
   
   # These are needed in a couple of spots, so just compute them once.
  -PREFIX = os.path.normpath(sys.prefix)
  -EXEC_PREFIX = os.path.normpath(sys.exec_prefix)
  +if "_python_sysroot" in os.environ:
  +    _sysroot=os.environ.get('_python_sysroot')
  +    PREFIX = os.path.normpath(_sysroot + os.environ.get('_python_prefix'))
  +    EXEC_PREFIX = os.path.normpath(_sysroot + os.environ.get('_python_exec_prefix'))
  +else:
  +    PREFIX = os.path.normpath(sys.prefix)
  +    EXEC_PREFIX = os.path.normpath(sys.exec_prefix)
   
   # Path to the base directory of the project. On Windows the binary may
   # live in project/PCBuild9.  If we're dealing with an x64 Windows build,
  Index: b/Lib/distutils/command/build_ext.py
  ===================================================================
  --- a/Lib/distutils/command/build_ext.py
  +++ b/Lib/distutils/command/build_ext.py
  @@ -237,7 +237,10 @@
           if (sysconfig.get_config_var('Py_ENABLE_SHARED')):
               if not sysconfig.python_build:
                   # building third party extensions
  -                self.library_dirs.append(sysconfig.get_config_var('LIBDIR'))
  +                libdir = sysconfig.get_config_var('LIBDIR')
  +                if "_python_sysroot" in os.environ:
  +                    libdir = os.environ.get("_python_sysroot") + libdir
  +                self.library_dirs.append(libdir)
               else:
                   # building python standard extensions
                   self.library_dirs.append('.')