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Currently we are not doing a good job of consolidating GO environment variables used by the go build system in the go.bbclass, instead we are relying on the individual GO recipe authors to perform the exports. This can result in inconsistent build results and often binaries that are not properly cross compiled, resulting in segfaults when the applications are run on the target. For example the GO documentation recommends that the environment include a value assigned to GOARM when cross building for ARMv5, ARMv6 and ARMv7 (https://github.com/golang/go/wiki/GoArm). In order to avoid polluting the build scripts with unnecessary exports, such as run.do_compile, we attempt to only export variables when they apply to a specific arch. (From OE-Core rev: 6300c4a83f7c8fc88702798ffe25bd6d57091673) Signed-off-by: Mark Asselstine <mark.asselstine@windriver.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.