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Meson 0.51 onwards detects if a build is cross by whether the host and build machines match. However this doesn't work in a number of cross compilation cases: notably where host is Windows but build is Linux, but also the common OpenEmbedded case where the host and build machine are both x86-64. Previously we'd patched this to instead look at whether an executable wrapper is needed: our cross files always set this to true so all cross builds would be identified as cross. However, this breaks build on the target as without a cross file the early cross build detection fails as we don't yet know if an exe wrapper is needed. The neater solution is to simply go back to the older logic: a cross build has cross files defined. [ YOCTO #13571 ] (From OE-Core rev: 9aa543aa9bd78c63343ae28fc85113ca2c9e0094) 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.