distutils/setuptools-native, distutils3/setuptools3-native: do not try to fetch code during do_compile

If a python recipe is using setuptools and the setup_requires argument, where
setuptools will use easy_install to fetch the module if it isn't
present.

The build failed on a machine where a proxy was required, but succeeded on a
machine which had direct access to the internet

Add var-NO_FETCH_BUILD, and set it in distutils_do_compile which does not
allow to fetch code from internet during do_compile.

Example result:
...
ERROR: Do not try to fetch `pytest-runner1' for building. Please add its native recipe to DEPENDS.
Traceback (most recent call last):
  File "setup.py", line 56, in <module>
...

The improvement is flexible for test_requirements argument (used at
`setup.py test'), where use easy_install also.

[YOCTO #12084]
(From OE-Core rev: 57414f4a1c549e6faaa110e6e95ff601b05b7361)

Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/meta/recipes-devtools/python/python-setuptools.inc b/meta/recipes-devtools/python/python-setuptools.inc
index ab1c013ef1..2c59a2936b 100644
--- a/meta/recipes-devtools/python/python-setuptools.inc
+++ b/meta/recipes-devtools/python/python-setuptools.inc
@@ -8,6 +8,8 @@ PYPI_PACKAGE_EXT = "zip"
 
 inherit pypi
 
+SRC_URI_append_class-native = " file://0001-conditionally-do-not-fetch-code-by-easy_install.patch"
+
 SRC_URI[md5sum] = "260630ae1a64bafa39dcc53404d63829"
 SRC_URI[sha256sum] = "012adb8e25fbfd64c652e99e7bab58799a3aaf05d39ab38561f69190a909015f"