476f5fc8f6
The major changes in terms of Buildroot packaging are:
- Due to PEP488, Python no longer generates .pyc (unoptimized) and
.pyo (optimized) byte-code files. Instead, it generates <foo>.pyc,
<foo>.opt-1.pyc and <foo>.opt-2.pyc. Therefore, we removed the
--disable-pyo-build option and kept only the --disable-pyc-build
option, which completely disables building all .pyc files. In
addition, since the optimized .opt-X.pyc files don't work if the
corresponding un-optimized .pyc file is not present, we are for the
moment unconditionally removing the optimized ones (keeping both
the unoptimized and optimized ones doubles the required filesystem
size!). So basically we preserve the behavior we had before this
commit:
BR2_PACKAGE_PYTHON3_PY_ONLY -> only *.py
BR2_PACKAGE_PYTHON3_PYC_ONLY -> only non-optimized *.pyc
BR2_PACKAGE_PYTHON3_PY_PYC -> both the *.py and non-optimized *.pyc
To achieve this, the TARGET_FINALIZE_HOOKS are reworked:
PYTHON3_REMOVE_PY_FILES is responsible for removing *.py files in
the BR2_PACKAGE_PYTHON3_PYC_ONLY case.
PYTHON3_REMOVE_PYC_FILES is responsible for removing *.pyc files
in the BR2_PACKAGE_PYTHON3_PY_ONLY case.
PYTHON3_REMOVE_OPTIMIZED_PYC_FILES is responsible for removing the
optimized *.opt-1.pyc and *.opt-2.pyc files, which is done
unconditionally.
- The PEP3147 disabling patch had to be significantly reworked due to
the code having changed heavily. The code was moved into a
_bootstrap_external.py, which is a "frozen" Python module, i.e a
module generated into a .h file at compile time using the
_freeze_importlib program.
- Due to the above, we now need to regenerate importlib.h at build
time. Unfortunately, for the target Python _freeze_importlib is
built for the target, so we can't run it on the build machine. To
fix this, we copy the _freeze_importlib program from the
host-python in $(HOST_DIR), and then patch the target python to use
it. Since the same solution can be used for 'pgen', we do it, and
avoid having to touch the graminit.{c,h} files.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Reviewed-by: Samuel Martin <s.martin49@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
68 lines
2.9 KiB
Diff
68 lines
2.9 KiB
Diff
From e634929f76a45f5b683dc19bc01efed2ab83e19e Mon Sep 17 00:00:00 2001
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From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
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Date: Wed, 23 Dec 2015 11:33:14 +0100
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Subject: [PATCH] Adjust library/header paths for cross-compilation
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When cross-compiling third-party extensions, the get_python_inc() or
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get_python_lib() can be called, to return the path to headers or
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libraries. However, they use the sys.prefix of the host Python, which
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returns incorrect paths when cross-compiling (paths pointing to host
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headers and libraries).
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In order to fix this, we introduce the _python_sysroot, _python_prefix
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and _python_exec_prefix variables, that allow to override these
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values, and get correct header/library paths when cross-compiling
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third-party Python modules.
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Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
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---
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Lib/distutils/command/build_ext.py | 5 ++++-
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Lib/distutils/sysconfig.py | 15 +++++++++++----
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2 files changed, 15 insertions(+), 5 deletions(-)
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diff --git a/Lib/distutils/command/build_ext.py b/Lib/distutils/command/build_ext.py
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index d4cb11e..e7a0ba9 100644
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--- a/Lib/distutils/command/build_ext.py
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+++ b/Lib/distutils/command/build_ext.py
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@@ -232,7 +232,10 @@ class build_ext(Command):
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if (sysconfig.get_config_var('Py_ENABLE_SHARED')):
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if not sysconfig.python_build:
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# building third party extensions
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- self.library_dirs.append(sysconfig.get_config_var('LIBDIR'))
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+ libdir = sysconfig.get_config_var('LIBDIR')
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+ if "_python_sysroot" in os.environ:
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+ libdir = os.environ.get("_python_sysroot") + libdir
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+ self.library_dirs.append(libdir)
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else:
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# building python standard extensions
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self.library_dirs.append('.')
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diff --git a/Lib/distutils/sysconfig.py b/Lib/distutils/sysconfig.py
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index 721edec..d20e2d8 100644
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--- a/Lib/distutils/sysconfig.py
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+++ b/Lib/distutils/sysconfig.py
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@@ -17,10 +17,17 @@ import sys
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from .errors import DistutilsPlatformError
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# These are needed in a couple of spots, so just compute them once.
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-PREFIX = os.path.normpath(sys.prefix)
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-EXEC_PREFIX = os.path.normpath(sys.exec_prefix)
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-BASE_PREFIX = os.path.normpath(sys.base_prefix)
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-BASE_EXEC_PREFIX = os.path.normpath(sys.base_exec_prefix)
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+if "_python_sysroot" in os.environ:
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+ _sysroot=os.environ.get('_python_sysroot')
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+ PREFIX = os.path.normpath(_sysroot + os.environ.get('_python_prefix'))
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+ EXEC_PREFIX = os.path.normpath(_sysroot + os.environ.get('_python_exec_prefix'))
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+ BASE_PREFIX = PREFIX
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+ BASE_EXEC_PREFIX = EXEC_PREFIX
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+else:
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+ PREFIX = os.path.normpath(sys.prefix)
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+ EXEC_PREFIX = os.path.normpath(sys.exec_prefix)
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+ BASE_PREFIX = os.path.normpath(sys.base_prefix)
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+ BASE_EXEC_PREFIX = os.path.normpath(sys.base_exec_prefix)
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# Path to the base directory of the project. On Windows the binary may
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# live in project/PCBuild/win32 or project/PCBuild/amd64.
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--
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2.6.4
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