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If you build on a system with git < 2.14 from scratch (e.g. debian9), the tree will be marked as "dirty" and the version will include "-dirty", leading to a reproducibility problem. The issue is the inode count for Licnses/README changing due to do_populate_lic hardlinking a copy of the file. We avoid this by ensuring the index is updated with a "git diff" before the u-boot machinery tries to determine the version. build$ ../git/scripts/setlocalversion ../git "" build$ ln ../git/ build$ ln ../git/README ../foo build$ ../git/scripts/setlocalversion ../git ""-dirty (i.e. creating a hardlink dirties the index) (From OE-Core rev: d39587d65bd57148c2c76b23e7a6ec78de855909) Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org> (cherry picked from commit a4de915af9e2c4d365527ad09286483b2ee904fc) Signed-off-by: Steve Sakoman <steve@sakoman.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.