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Nicolas Dechesne
967d42170e
When Layer A and Layer B depend on each other, then we will end up in a recursive loop in function recurse_dependencies(). To avoid such situation before making the recursive function call we check whether or not we have already processed this layer. e.g. without this patch, running this script on layers with dependency loops, we are seeing: $ yocto-check-layer -d /srv/work/oe/meta-openembedded/ INFO: Detected layers: INFO: meta-python: LayerType.SOFTWARE, /srv/work/oe/meta-openembedded/meta-python INFO: meta-filesystems: LayerType.SOFTWARE, /srv/work/oe/meta-openembedded/meta-filesystems INFO: meta-gnome: LayerType.SOFTWARE, /srv/work/oe/meta-openembedded/meta-gnome INFO: meta-xfce: LayerType.SOFTWARE, /srv/work/oe/meta-openembedded/meta-xfce INFO: meta-networking: LayerType.SOFTWARE, /srv/work/oe/meta-openembedded/meta-networking INFO: meta-initramfs: LayerType.SOFTWARE, /srv/work/oe/meta-openembedded/meta-initramfs INFO: meta-oe: LayerType.SOFTWARE, /srv/work/oe/meta-openembedded/meta-oe INFO: meta-multimedia: LayerType.SOFTWARE, /srv/work/oe/meta-openembedded/meta-multimedia INFO: meta-perl: LayerType.SOFTWARE, /srv/work/oe/meta-openembedded/meta-perl INFO: meta-webserver: LayerType.SOFTWARE, /srv/work/oe/meta-openembedded/meta-webserver INFO: INFO: Setting up for meta-python(LayerType.SOFTWARE), /srv/work/oe/meta-openembedded/meta-python DEBUG: Processing dependencies core openembedded-layer for layer meta-python. DEBUG: Processing dependencies core networking-layer for layer meta-oe. DEBUG: Processing dependencies core openembedded-layer meta-python for layer meta-networking. DEBUG: Processing dependencies core networking-layer for layer meta-oe. DEBUG: Processing dependencies core openembedded-layer meta-python for layer meta-networking. DEBUG: Processing dependencies core networking-layer for layer meta-oe. DEBUG: Processing dependencies core openembedded-layer meta-python for layer meta-networking. DEBUG: Processing dependencies core networking-layer for layer meta-oe. DEBUG: Processing dependencies core openembedded-layer meta-python for layer meta-networking. DEBUG: Processing dependencies core networking-layer for layer meta-oe. DEBUG: Processing dependencies core openembedded-layer meta-python for layer meta-networking. DEBUG: Processing dependencies core networking-layer for layer meta-oe. DEBUG: Processing dependencies core openembedded-layer meta-python for layer meta-networking. DEBUG: Processing dependencies core networking-layer for layer meta-oe. DEBUG: Processing dependencies core openembedded-layer meta-python for layer meta-networking. DEBUG: Processing dependencies core networking-layer for layer meta-oe. DEBUG: Processing dependencies core openembedded-layer meta-python for layer meta-networking. DEBUG: Processing dependencies core networking-layer for layer meta-oe. DEBUG: Processing dependencies core openembedded-layer meta-python for layer meta-networking. DEBUG: Processing dependencies core networking-layer for layer meta-oe. DEBUG: Processing dependencies core openembedded-layer meta-python for layer meta-networking. DEBUG: Processing dependencies core networking-layer for layer meta-oe. DEBUG: Processing dependencies core openembedded-layer meta-python for layer meta-networking. ... ... ... [keep repeating] This patch fixes this situation. (From OE-Core rev: 759290ed5fedc1ce10639b3584d4532d688ea714) Signed-off-by: Nicolas Dechesne <nicolas.dechesne@linaro.org> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org> (cherry picked from commit 171900b4bcb06416685ce90b63114a10fefe0b94) Signed-off-by: Armin Kuster <akuster808@gmail.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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.