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It is known that old versions of gcc prior to 4.8 causes builds to fail. Add a test for BUILD_CC == 'gcc' and gcc < 4.8 and recommend using scripts/install-buildtools or user built buildtools-extended-tarball. Use the new get_host_compiler_version function from lib/oe/utils.py NOTE: another solution is to install devtoolset-6+ from scl [1], but this is a rather large install (> 1 Gb) and fairly invasive. [1] https://www.softwarecollections.org/en/scls/rhscl/devtoolset-6/ Adding this code means we can increase the minimum version easily in the future too (which will soon be needed). RP: Change minimum version from 5.0 to 4.8 for initial patch (From OE-Core rev: 3bb3b9cbad82b2f09386153226d1d4e769b7347b) Signed-off-by: Tim Orling <timothy.t.orling@linux.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.