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Linux users:
If the build fails to run on your setup (unknown instructions), it means your CPU is missing SSE4/AES/PCLMUL instructions. There will be a fail safe gcc4.7 build without any of those instructions for the actual release, but for the testing phase, you'll want to build the code directly on your machine. The build process has been fixed so you should have an easy time with it.
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So what setup (Distro, CPU, RAM) did you use for those builds? I will buy such a machine to get my coins sent.