Paul Barker 1251765fff bitbake: fetch2: Add the ability to list expanded URL data
Some fetchers may download additional sources along with those
explicitly listed in SRC_URI. These "implicit URLs" will be needed by
the archiver to ensure that all sources can be archived.

We can't just return a list of URL strings since each URL may need its
own SRCREV data so we return a list of FetchData objects.

Each fetcher can override the implicit_urldata() function to provide the
additional FetchData objects. For now this is just needed in the gitsm
fetcher to walk git submodules recursively.

(Bitbake rev: 1350f241b7d991bd191ce9e44f6662e4376c6e24)

Signed-off-by: Paul Barker <pbarker@konsulko.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
2020-06-04 13:28:16 +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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