Richard Purdie f7b90ab3ea bitbake: main: Give a user readable error if we can't locate topdir
Currently if you run bitbake in an invalid directory, the user experience
is poor:

birbake/lib/bb/main.py", line 427, in setup_bitbake
    topdir, lock = lockBitbake()
  File "./bitbake/lib/bb/main.py", line 494, in lockBitbake
    lockfile = topdir + "/bitbake.lock"
TypeError: unsupported operand type(s) for +: 'NoneType' and 'str'

This ensures we exit straight away with a better error message.

[YOCTO #12163]

(Bitbake rev: 2a931d5e4ac092ce275f3a51e22b802689f511e6)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
2017-10-31 09:09:27 +00:00
2016-03-26 08:06:58 +00:00
2014-01-02 12:58:54 +00:00

QEMU Emulation Targets
======================

To simplify development, the build system supports building images to
work with the QEMU emulator in system emulation mode. Several architectures
are currently supported in 32 and 64 bit variants:

  * ARM (qemuarm + qemuarm64)
  * x86 (qemux86 + qemux86-64)
  * PowerPC (qemuppc only)
  * MIPS (qemumips + qemumips64)

Use of the QEMU images is covered in the Yocto Project Reference Manual.
The appropriate MACHINE variable value corresponding to the target is given
in brackets.
Description
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