Khem Raj 20916caa29 perl: Handle PACKAGES_DYNAMIC for perl-native
A perl module recipe extending to provide native version causes target
perl dependencies to be pulled into native build if the module recipe
has RDEPENDS_${PN} = "perl-module-XXXX" e.g. libxml-sax-base-perl
recipe.

The reason is that native bbclass empties out PACKAGES_DYNAMIC and
perl's PACKAGES_DYNAMIC_class-target is greedy enough to usurp native
modules as well.

Eventually we end up with errors like when sstate is used across
machines

* ERROR: libxml-sax-base-perl-native different signature for task do_populate_sysroot.sigdata between qemux86copy and qemuarm

Therefore, to fix this native case needs to handled specially when
re-assigning module dependencies in split_perl_packages(), where the
modules are named correctly for native case and have a single dependency
on perl-native, secondly, PACKAGES_DYNAMIC for target case needs to be
reined in to spare, -native modules, thirdly, let perl-native take over
the case for providing native modules

This will fix several sstate signature errors like above with external
perl modules providing native variants and having runtime dependencies on
modules which are provided by perl proper

(From OE-Core rev: 34834d06ceb84221dd53defd27eb94201723d6c5)

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
2019-10-09 14:07:43 +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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