python: bump to 2.7.6

Even though jumping from 2.7.3 to 2.7.6 looks like a minor version
bump, it is in fact a fairly significant one, because a good number of
changes to help cross-compilation have been merged into Python
upstream. Therefore, most of our patches are affected by this change.

In detail, this commit:

 * Renames all the patches to follow the naming convention of patches
   in Buildroot: the patch file names should not have any version
   number.

 * The patches numbered above 100, that add configuration options to
   disable certain modules of the Python standard library, are only
   renamed and slightly adapted, they didn't change that much.

 * The patches numbered below 100 are almost entirely rewritten: many
   of the cross-compilation problems that used to exist in Python
   2.7.3 no longer exist, and the number of remaining problems is
   smaller, and can be fixed with smaller patches.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

1 files changed, 23 insertions, 0 deletions

diff --git a/package/python/python-003-properly-detect-if-python-build.patch b/package/python/python-003-properly-detect-if-python-build.patch
new file mode 100644
index 0000000000..3fb865f84f
--- /dev/null
+++ b/package/python/python-003-properly-detect-if-python-build.patch
@@ -0,0 +1,23 @@
+distutils: fix build_ext check to find whether we're building Python or not
+
+The build_ext logic uses
+sys.executable.startswith(os.path.join(sys.exec_prefix, "bin")) to
+determine whether we're building a third-party Python extension, or a
+built-in Python extension. However, this check is wrong in
+cross-compilation mode, and instead, the sysconfig.python_build
+variable should be used.
+
+Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
+Index: b/Lib/distutils/command/build_ext.py
+===================================================================
+--- a/Lib/distutils/command/build_ext.py
++++ b/Lib/distutils/command/build_ext.py
+@@ -235,7 +235,7 @@
+         # Python's library directory must be appended to library_dirs
+         # See Issues: #1600860, #4366
+         if (sysconfig.get_config_var('Py_ENABLE_SHARED')):
+-            if sys.executable.startswith(os.path.join(sys.exec_prefix, "bin")):
++            if not sysconfig.python_build:
+                 # building third party extensions
+                 self.library_dirs.append(sysconfig.get_config_var('LIBDIR'))
+             else: