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Joshua Watt
2844a495c6
Checking the requirements for each volatiles file in the populate-volatiles script can be very slow when there are a large number of volatiles files, easily consuming over 80% of the processing time. These checks don't usually uncover any problems so concatenate all the volatiles files together and process them as one large file for a "fast path" option. This ensures that the penalty for checking the requirements is only incurred once. In the event that checking the requirements for the unified file fails, fall back to the slow process of checking each one individually so that the offending one can be skipped. The core file is handled separately because it is responsible for creating the temp directory used by check_requirements and thus must always run first and without having its requirements checked. [YOCTO #12949] (From OE-Core rev: f380fac8a43a75861f3157777b12a317b985a5e1) Signed-off-by: Joshua Watt <JPEWhacker@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.