Robert Yang 09923bbf46 oe-init-build-env: Error out when failed to locate cwd
Ubuntu's /bin/sh symlinks to /bin/dash by default, so
subprocess.check_call(oe-init-build-env, cwd=builddir) would be failed since
pwd is builddir, and there is no $builddir/oe-init-build-env, this would
lead to other confusing errors, check and error it out earlier to make it
easier to locate the problem.

We don't meet the problem when manually run ". oe-init-build-env" is because
Ubuntu's default login shell is bash, but subprocess.check_call() doesn't
respect to login shell, so the error only happens in situations like
subprocess.check_call().

And also print errors to stderr as oe-buildenv-internal does.

(From OE-Core rev: 632c54b7686e60ee320ed1a7ac7d889790599d27)

Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
2019-03-12 11:57:41 -07:00
2014-01-02 12:58:54 +00:00
2018-02-24 10:31:45 +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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