Jose Quaresma 378c364b12 sstate.bbclass: fix error handling when sstate mirrors is ro
The commit dd555537fc
'sstate.bbclass: fix errors about read-only sstate mirrors'
adds an additional exception handler to silently mask read
only rootfs errors thrown during the touch.

The exception handler checks the error type with the python module errno
but this module needs to be imported as it don't exist.

Example of the error:

File: 'exec_python_func() autogenerated', lineno: 2, function: <module>
     0001:
 *** 0002:sstate_task_postfunc(d)
     0003:
File: '/home/builder/src/base/poky/meta/classes/sstate.bbclass', lineno: 778, function: sstate_task_postfunc
     0774:
     0775:    omask = os.umask(0o002)
     0776:    if omask != 0o002:
     0777:       bb.note("Using umask 0o002 (not %0o) for sstate packaging" % omask)
 *** 0778:    sstate_package(shared_state, d)
     0779:    os.umask(omask)
     0780:
     0781:    sstateinst = d.getVar("SSTATE_INSTDIR")
     0782:    d.setVar('SSTATE_FIXMEDIR', shared_state['fixmedir'])
File: '/home/builder/src/base/poky/meta/classes/sstate.bbclass', lineno: 708, function: sstate_package
     0704:        except PermissionError:
     0705:            pass
     0706:        except OSError as e:
     0707:            # Handle read-only file systems gracefully
 *** 0708:            if e.errno != errno.EROFS:
     0709:                raise e
     0710:
     0711:    return
     0712:
Exception: NameError: name 'errno' is not defined

(From OE-Core rev: ce78c16409363741d59a2f787aca66077bec93cd)

Signed-off-by: Jose Quaresma <quaresma.jose@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit 15f30ad144fbe25e9a5e71bc7e42e746d2039992)
Signed-off-by: Steve Sakoman <steve@sakoman.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
2021-08-18 18:00:19 +01:00

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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Readme 251 MiB