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image_types_wic.bbclass has a mechanism for doing variable substitution on .wks files by simply letting the input file be called .wks.in. However, that doesn't allow using variables in files included via the include directive. This is unfortunate, because lacking either the ability to include other files or variable substitution leads to fragile and error-prone duplication between kickstarter files and recipes/configuration files used for various boards. This adds (somewhat naive) support for variable substitution in all files parsed by wic. The user should add all required variables to WICVARS to get them exported appropriately. (From OE-Core rev: 8a75d614a8a1ff72c4af448ac3e1292d0e1d1a79) Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk> 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.