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Thomas Petazzoni 350941e31d python: remove target Python packages from PYTHONPATH
We currently have
$(TARGET_DIR)/usr/lib/python$(PYTHON_VERSION_MAJOR)/site-packages/
inside the PYTHON_PATH variable, which gets used to define PYTHONPATH,
passed to the host Python interpreter when building/installing target
packages.

However, this is terribly wrong, as it causes the host interpreter to
potentially import target Python packages. This is wrong for several
reasons:

 - Some Python packages might need some Python modules to be installed
   on the host (described in setup_requires in setup.py), but their
   installation currently works because by luck the corresponding
   Python module is installed for the target. Some of those cases were
   happening for real, and fixed by previous patches.

 - Some Python packages include some native code, therefore built for
   a specific CPU architecture. When you point the host Python
   interpreter to native libraries built for the target, you get nice
   build failures, such as the one affecting the python-cffi related
   packages.

Making this change allows to fix the python-cffi related build
failures:

  http://autobuild.buildroot.net/results/a9af84f2d845ee25e2b7d8b92aef485112b46060/
  (python-cryptography)

  http://autobuild.buildroot.net/results/b017c4f6b4d45c0afbf06a80dbd3f2ebe5d49d20/
  (python-pynacl)

  http://autobuild.buildroot.net/results/25144ea191ad46d851b31d3a2f0ef939f215494b/
  (python-smbus-cffi)

This change has been verified with the following defconfig that
enables a lot of Python packages:

BR2_arm=y
BR2_TOOLCHAIN_EXTERNAL=y
BR2_TOOLCHAIN_EXTERNAL_CUSTOM=y
BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD=y
BR2_TOOLCHAIN_EXTERNAL_URL="http://autobuild.buildroot.org/toolchains/tarballs/br-arm-full-2017.05-834-gb595627.tar.bz2"
BR2_TOOLCHAIN_EXTERNAL_GCC_4_9=y
BR2_TOOLCHAIN_EXTERNAL_HEADERS_3_10=y
BR2_TOOLCHAIN_EXTERNAL_LOCALE=y
BR2_TOOLCHAIN_EXTERNAL_CXX=y
BR2_INIT_NONE=y
BR2_SYSTEM_BIN_SH_NONE=y
BR2_PACKAGE_PYTHON=y
BR2_PACKAGE_PYTHON_ALSAAUDIO=y
BR2_PACKAGE_PYTHON_ARROW=y
BR2_PACKAGE_PYTHON_ATTRS=y
BR2_PACKAGE_PYTHON_AUTOBAHN=y
BR2_PACKAGE_PYTHON_BITSTRING=y
BR2_PACKAGE_PYTHON_BOTTLE=y
BR2_PACKAGE_PYTHON_CAN=y
BR2_PACKAGE_PYTHON_CBOR=y
BR2_PACKAGE_PYTHON_CHARDET=y
BR2_PACKAGE_PYTHON_CHEETAH=y
BR2_PACKAGE_PYTHON_CHERRYPY=y
BR2_PACKAGE_PYTHON_CONFIGOBJ=y
BR2_PACKAGE_PYTHON_CONFIGSHELL_FB=y
BR2_PACKAGE_PYTHON_CRC16=y
BR2_PACKAGE_PYTHON_CRCMOD=y
BR2_PACKAGE_PYTHON_CSSSELECT=y
BR2_PACKAGE_PYTHON_CSSUTILS=y
BR2_PACKAGE_PYTHON_DAEMON=y
BR2_PACKAGE_PYTHON_DIALOG=y
BR2_PACKAGE_PYTHON_DICTTOXML=y
BR2_PACKAGE_PYTHON_DJANGO=y
BR2_PACKAGE_PYTHON_DOCOPT=y
BR2_PACKAGE_PYTHON_DPKT=y
BR2_PACKAGE_PYTHON_ECDSA=y
BR2_PACKAGE_PYTHON_ENUM=y
BR2_PACKAGE_PYTHON_FLASK_BABEL=y
BR2_PACKAGE_PYTHON_FLASK_JSONRPC=y
BR2_PACKAGE_PYTHON_FLASK_LOGIN=y
BR2_PACKAGE_PYTHON_FLUP=y
BR2_PACKAGE_PYTHON_GOBJECT=y
BR2_PACKAGE_PYTHON_GUNICORN=y
BR2_PACKAGE_PYTHON_HTML5LIB=y
BR2_PACKAGE_PYTHON_HTTPLIB2=y
BR2_PACKAGE_PYTHON_HUMANIZE=y
BR2_PACKAGE_PYTHON_ID3=y
BR2_PACKAGE_PYTHON_INIPARSE=y
BR2_PACKAGE_PYTHON_IOWAIT=y
BR2_PACKAGE_PYTHON_IPADDR=y
BR2_PACKAGE_PYTHON_IPY=y
BR2_PACKAGE_PYTHON_IPYTHON=y
BR2_PACKAGE_PYTHON_JSON_SCHEMA_VALIDATOR=y
BR2_PACKAGE_PYTHON_KEYRING=y
BR2_PACKAGE_PYTHON_LIBCONFIG=y
BR2_PACKAGE_PYTHON_LMDB=y
BR2_PACKAGE_PYTHON_LXML=y
BR2_PACKAGE_PYTHON_MAD=y
BR2_PACKAGE_PYTHON_MARKDOWN=y
BR2_PACKAGE_PYTHON_MELD3=y
BR2_PACKAGE_PYTHON_MISTUNE=y
BR2_PACKAGE_PYTHON_MSGPACK=y
BR2_PACKAGE_PYTHON_MUTAGEN=y
BR2_PACKAGE_PYTHON_MWSCRAPE=y
BR2_PACKAGE_PYTHON_NETADDR=y
BR2_PACKAGE_PYTHON_NETIFACES=y
BR2_PACKAGE_PYTHON_NFC=y
BR2_PACKAGE_PYTHON_NUMPY=y
BR2_PACKAGE_PYTHON_PAHO_MQTT=y
BR2_PACKAGE_PYTHON_PAM=y
BR2_PACKAGE_PYTHON_PARAMIKO=y
BR2_PACKAGE_PYTHON_PILLOW=y
BR2_PACKAGE_PYTHON_POSIX_IPC=y
BR2_PACKAGE_PYTHON_PSUTIL=y
BR2_PACKAGE_PYTHON_PUDB=y
BR2_PACKAGE_PYTHON_PYCLI=y
BR2_PACKAGE_PYTHON_PYCPARSER=y
BR2_PACKAGE_PYTHON_PYELFTOOLS=y
BR2_PACKAGE_PYTHON_PYFTPDLIB=y
BR2_PACKAGE_PYTHON_PYGAME=y
BR2_PACKAGE_PYTHON_PYGAME_IMAGE=y
BR2_PACKAGE_PYTHON_PYGAME_EXAMPLES=y
BR2_PACKAGE_PYTHON_PYGAME_FONT=y
BR2_PACKAGE_PYTHON_PYGAME_MIXER=y
BR2_PACKAGE_PYTHON_PYINOTIFY=y
BR2_PACKAGE_PYTHON_PYLIBFTDI=y
BR2_PACKAGE_PYTHON_PYMYSQL=y
BR2_PACKAGE_PYTHON_PYPARTED=y
BR2_PACKAGE_PYTHON_PYPCAP=y
BR2_PACKAGE_PYTHON_PYQRCODE=y
BR2_PACKAGE_PYTHON_PYRATEMP=y
BR2_PACKAGE_PYTHON_PYRO=y
BR2_PACKAGE_PYTHON_PYROUTE2=y
BR2_PACKAGE_PYTHON_PYSENDFILE=y
BR2_PACKAGE_PYTHON_PYSMB=y
BR2_PACKAGE_PYTHON_PYSNMP_APPS=y
BR2_PACKAGE_PYTHON_PYSNMP_MIBS=y
BR2_PACKAGE_PYTHON_PYSOCKS=y
BR2_PACKAGE_PYTHON_PYTABLEWRITER=y
BR2_PACKAGE_PYTHON_PYTRIE=y
BR2_PACKAGE_PYTHON_PYUSB=y
BR2_PACKAGE_PYTHON_PYXB=y
BR2_PACKAGE_PYTHON_PYZMQ=y
BR2_PACKAGE_PYTHON_REQUESTS_TOOLBELT=y
BR2_PACKAGE_PYTHON_RPI_GPIO=y
BR2_PACKAGE_PYTHON_RTSLIB_FB=y
BR2_PACKAGE_PYTHON_SDNOTIFY=y
BR2_PACKAGE_PYTHON_SERIAL=y
BR2_PACKAGE_PYTHON_SETPROCTITLE=y
BR2_PACKAGE_PYTHON_SH=y
BR2_PACKAGE_PYTHON_SHUTILWHICH=y
BR2_PACKAGE_PYTHON_SIMPLEJSON=y
BR2_PACKAGE_PYTHON_SMBUS_CFFI=y
BR2_PACKAGE_PYTHON_SOCKETIO=y
BR2_PACKAGE_PYTHON_SORTEDCONTAINERS=y
BR2_PACKAGE_PYTHON_SPIDEV=y
BR2_PACKAGE_PYTHON_THRIFT=y
BR2_PACKAGE_PYTHON_TOMAKO=y
BR2_PACKAGE_PYTHON_TREQ=y
BR2_PACKAGE_PYTHON_U_MSGPACK=y
BR2_PACKAGE_PYTHON_UBJSON=y
BR2_PACKAGE_PYTHON_UJSON=y
BR2_PACKAGE_PYTHON_URLLIB3=y
BR2_PACKAGE_PYTHON_VERSIONTOOLS=y
BR2_PACKAGE_PYTHON_WATCHDOG=y
BR2_PACKAGE_PYTHON_WEB2PY=y
BR2_PACKAGE_PYTHON_WEBPY=y
BR2_PACKAGE_PYTHON_WHOOSH=y
BR2_PACKAGE_PYTHON_WS4PY=y
BR2_PACKAGE_PYTHON_WSACCEL=y
BR2_PACKAGE_PYTHON_XLUTILS=y

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Reviewed-by: Yegor Yefremov <yegorslists@googlemail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2017-07-13 10:54:39 +02:00
arch arch/arm: fix -mcpu default values for AArch64 2017-07-10 18:04:16 +02:00
board configs: nexbox_a95x_defconfig: bump to kernel 4.12 2017-07-12 18:38:32 +02:00
boot uboot: apply xtensa overlay 2017-07-09 17:03:45 +02:00
configs configs: nexbox_a95x_defconfig: bump to kernel 4.12 2017-07-12 18:38:32 +02:00
docs manual: patches are not applied for SITE_METHOD = local 2017-07-09 17:25:48 +02:00
fs fs/squashfs: cleanup if-else cascade 2017-07-11 22:33:51 +02:00
linux linux: bump default to version 4.12.1 2017-07-12 18:39:07 +02:00
package python: remove target Python packages from PYTHONPATH 2017-07-13 10:54:39 +02:00
support support/testing: unbreak run-tests -l 2017-07-10 23:51:33 +02:00
system
toolchain toolchain-external: default BR2_TOOLCHAIN_EXTERNAL_PATH to empty 2017-07-10 18:03:13 +02:00
utils
.defconfig
.gitignore
.gitlab-ci.yml board: Add nanopi-m1 Support 2017-07-05 18:15:54 +02:00
.gitlab-ci.yml.in
CHANGES CHANGES: update with removal of $(HOST_DIR)/usr 2017-07-05 16:54:21 +02:00
Config.in
Config.in.legacy arch/xtensa: allow specifying path to tarball file 2017-07-09 15:41:51 +02:00
COPYING
DEVELOPERS fs/squashfs: cleanup if-else cascade 2017-07-11 22:33:51 +02:00
Makefile Makefile: properly create $(HOST_DIR)/usr compatibility symlink 2017-07-10 17:45:57 +02:00
Makefile.legacy
README

Buildroot is a simple, efficient and easy-to-use tool to generate embedded
Linux systems through cross-compilation.

The documentation can be found in docs/manual. You can generate a text
document with 'make manual-text' and read output/docs/manual/manual.text.
Online documentation can be found at http://buildroot.org/docs.html

To build and use the buildroot stuff, do the following:

1) run 'make menuconfig'
2) select the target architecture and the packages you wish to compile
3) run 'make'
4) wait while it compiles
5) find the kernel, bootloader, root filesystem, etc. in output/images

You do not need to be root to build or run buildroot.  Have fun!

Buildroot comes with a basic configuration for a number of boards. Run
'make list-defconfigs' to view the list of provided configurations.

Please feed suggestions, bug reports, insults, and bribes back to the
buildroot mailing list: buildroot@buildroot.org
You can also find us on #buildroot on Freenode IRC.

If you would like to contribute patches, please read
https://buildroot.org/manual.html#submitting-patches