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[packages/trusty/cirros-testvm.git] / cirros-testvm / src-cirros / buildroot-2015.05 / package / python3 / 009-distutils-use-python-sysroot.patch

diff --git a/cirros-testvm/src-cirros/buildroot-2015.05/package/python3/009-distutils-use-python-sysroot.patch b/cirros-testvm/src-cirros/buildroot-2015.05/package/python3/009-distutils-use-python-sysroot.patch
new file mode 100644 (file)
index 0000000..06f2039
--- /dev/null
+++ b/cirros-testvm/src-cirros/buildroot-2015.05/package/python3/009-distutils-use-python-sysroot.patch
@@ -0,0 +1,57 @@
+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 <thomas.petazzoni@free-electrons.com>
+
+Index: b/Lib/distutils/sysconfig.py
+===================================================================
+--- a/Lib/distutils/sysconfig.py
++++ b/Lib/distutils/sysconfig.py
+@@ -16,10 +16,17 @@
+ 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/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
+@@ -239,7 +239,10 @@
+         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('.')