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From e359a7a3c4f9e70360a068bef19c95938fdacede Mon Sep 17 00:00:00 2001
From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
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 <thomas.petazzoni@free-electrons.com>
[adapt for setuptools, rename environment variable, use fixed lib path]
Signed-off-by: Jeffery To <jeffery.to@gmail.com>
---
Lib/distutils/command/build_ext.py | 5 ++++-
Lib/sysconfig.py | 15 +++++++++++----
2 files changed, 15 insertions(+), 5 deletions(-)
--- a/setuptools/_distutils/command/build_ext.py
+++ b/setuptools/_distutils/command/build_ext.py
@@ -238,7 +238,10 @@ 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 'STAGING_DIR' in os.environ:
+ libdir = os.environ.get('STAGING_DIR') + '/usr/lib'
+ self.library_dirs.append(libdir)
else:
# building python standard extensions
self.library_dirs.append('.')
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