总体安装步骤大同小异，详细步骤请参考下述链接：
OLLVM环境搭建-编译x86指令集可执行程序-Ubuntu 20.04跟着铁头干混淆2 ubuntu20.04编译ollvm cmake报错
obfuscator/cmake/config.guess: 71: Syntax error: word unexpected (expecting "in") CMake Error at cmake/modules/GetHostTriple.cmake:27 (message): Failed to execute /home/computador/gsrc/independent/llvm/cmake/config.guess Call Stack (most recent call first): cmake/config-ix.cmake:380 (get_host_triple) CMakeLists.txt:611 (include) -- Configuring incomplete, errors occurred! See also "/home/computador/gsrc/independent/llvm_build/build/CMakeFiles/CMakeOutput.log". See also "/home/computador/gsrc/independent/llvm_build/build/CMakeFiles/CMakeError.log".
经过查阅相关类似问题的解决方案，如cmake增加-DLLVM_INCLUDE_TESTS=OFF选项等，均不奏效。最终在StackOverFlow上面一位网友提供的解决方案成功的解决了此问题，主要的原因是在config.guess文件中存在一些DOS行结尾(DOS line endings)，需要将其转换为Unix行结尾。
sudo apt-get install dos2unix dos2unix path/to/config.guess
从头再来即可成功编译OLLVM
