If you have got the Loongson-3A3000 or 3A4000 PC, which is mips64el processor,
on the Fedora21-linux platform, you can get an clang8 compiler rpm-package by the following addrs,
download-addrs: https://pan.baidu.com/s/1Qxs61ApXseX1iePFNk17yw
download-word: p2gc
NOTE:
installing the rpm maybe depending on the z3,
yum install z3.mips64el if needed.
enter the coreclr directory and compile using command " ./build.sh -mips64 ignorewarnings"