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Backport the patch from upstream: https://github.com/gcc-mirror/gcc.git [commit beb921e] https://gcc.gnu.org/viewcvs/gcc?view=revision&revision=269925 Add the premark_used_variables function, meanwhile do not mark not premarked external variables in prune_unused_types_walk. (From OE-Core rev: 7edf5725631e69c22627e41ecf5de3222f1d624b) Signed-off-by: Zhixiong Chi <zhixiong.chi@windriver.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org> 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.