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Paul Eggleton
125e0b72b7
If you have a recipe that uses overrides to conditionally extend SRC_URI to add additional patches, then you will often need to update those patches if you're making other changes to the source tree (for example if you're upgrading the underlying source). Make this possible with devtool by creating devtool-override-* branches for each override that conditionally appends/prepends SRC_URI, and have devtool update-recipe / finish check each branch out in turn and update the corresponding patches. A current example of a recipe that does this is the quota recipe - it applies an additional patch if musl is the selected C library (i.e. libc-musl is in OVERRIDES). Note that use of this functionality does require some care - in particular, updates to patches that appear on the main branch (named "devtool" by default) should be made there and not only on one of the specific devtool-override-* branches that are created for each override. The recommended procedure is to make the changes you want to make to the main branch first, then check out and rebase each devtool-override-* branch, testing each one by activating the corresponding configuration, and then finally run devtool finish. Fixes [YOCTO #11516]. (From OE-Core rev: aa87603d1ffd695027847f4df75c0406cf4e14d8) Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com> Signed-off-by: Ross Burton <ross.burton@intel.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.