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Richard Purdie 24a4fa5bad bitbake: taskdata: Improve handling of regex in ASSUME_PROVIDED
ASSUME_PROVIDED can take regexs however the current way of handling
this in code is suboptimal. It means that you can add something like:

DEPENDS += "texinfo-nativejunk-that-does-not-exist"

and if texinfo-native is in ASSUME_PROVIDED, no error will occur.

Update the code to only treat something as a regex if a start or end
anchor character is present (which wouldn't be valid in a recipe name).

[YOCTO #13893]

(Bitbake rev: 3d72e23109990970fbb1086923277af752168b4a)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
2020-06-28 08:36:56 +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.
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