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Build date ends up embbedded in binary images, breaking reproducibility of jpeg-tools and libturbojpeg. To enable reproducible builds, build date can be specified during configuration, via "--with_build_date=<date>". If SOURCE_DATE_EPOCH is specified we configure libjpeg-turbo with this value as build date. Although the build date is a generic string, we keep it in the same format YYYYMMDD. [YOCTO #12526] (From OE-Core rev: 46a39fe9fa2bc8f58ec822434b9ace9ab5572c82) Signed-off-by: Juro Bystricky <juro.bystricky@intel.com> 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.