From 523c52f6f272810a6183f7e1302c09e9a7f16f46 Mon Sep 17 00:00:00 2001 From: Eneas U de Queiroz Date: Fri, 21 Jun 2019 17:53:15 -0300 Subject: [PATCH] python3: use _python_sysroot for cross-compilation This patch, taken from buildroot, avoids the use of host paths when compiling third-party extensions. Signed-off-by: Eneas U de Queiroz --- lang/python/python3/Makefile | 2 +- .../008-distutils-use-python-sysroot.patch | 67 +++++++++++++++++++ 2 files changed, 68 insertions(+), 1 deletion(-) create mode 100644 lang/python/python3/patches/008-distutils-use-python-sysroot.patch diff --git a/lang/python/python3/Makefile b/lang/python/python3/Makefile index 34ba31fb0..c3ba20f9b 100644 --- a/lang/python/python3/Makefile +++ b/lang/python/python3/Makefile @@ -14,7 +14,7 @@ PYTHON_VERSION:=$(PYTHON3_VERSION) PYTHON_VERSION_MICRO:=$(PYTHON3_VERSION_MICRO) PKG_NAME:=python3 -PKG_RELEASE:=13 +PKG_RELEASE:=14 PKG_VERSION:=$(PYTHON_VERSION).$(PYTHON_VERSION_MICRO) PKG_SOURCE:=Python-$(PKG_VERSION).tar.xz diff --git a/lang/python/python3/patches/008-distutils-use-python-sysroot.patch b/lang/python/python3/patches/008-distutils-use-python-sysroot.patch new file mode 100644 index 000000000..b3a0e5328 --- /dev/null +++ b/lang/python/python3/patches/008-distutils-use-python-sysroot.patch @@ -0,0 +1,67 @@ +From e359a7a3c4f9e70360a068bef19c95938fdacede Mon Sep 17 00:00:00 2001 +From: Thomas Petazzoni +Date: Wed, 23 Dec 2015 11:33:14 +0100 +Subject: [PATCH] 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. + +Signed-off-by: Thomas Petazzoni +--- + Lib/distutils/command/build_ext.py | 5 ++++- + Lib/distutils/sysconfig.py | 15 +++++++++++---- + 2 files changed, 15 insertions(+), 5 deletions(-) + +diff --git a/Lib/distutils/command/build_ext.py b/Lib/distutils/command/build_ext.py +index 74de782d8a..d0c847b365 100644 +--- a/Lib/distutils/command/build_ext.py ++++ b/Lib/distutils/command/build_ext.py +@@ -234,7 +234,10 @@ class build_ext(Command): + 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('.') +diff --git a/Lib/distutils/sysconfig.py b/Lib/distutils/sysconfig.py +index 2bcd1dd288..422c13fa4f 100644 +--- a/Lib/distutils/sysconfig.py ++++ b/Lib/distutils/sysconfig.py +@@ -17,10 +17,17 @@ import sys + from .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) +-BASE_PREFIX = os.path.normpath(sys.base_prefix) +-BASE_EXEC_PREFIX = os.path.normpath(sys.base_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')) ++ BASE_PREFIX = PREFIX ++ BASE_EXEC_PREFIX = EXEC_PREFIX ++else: ++ PREFIX = os.path.normpath(sys.prefix) ++ EXEC_PREFIX = os.path.normpath(sys.exec_prefix) ++ BASE_PREFIX = os.path.normpath(sys.base_prefix) ++ BASE_EXEC_PREFIX = os.path.normpath(sys.base_exec_prefix) + + # Path to the base directory of the project. On Windows the binary may + # live in project/PCbuild/win32 or project/PCbuild/amd64. +-- +2.13.5 +