OS: CentOS 7.4 Prequest dependency environment: 1. python >= 3.6.8 2. cmake >= 3.19.0 3. boost == 1.67.0 4. clang == 6.0.0 5. gcc == 4.9.4 6. llvm == 6.0.0 How to build: 1. In merlin_setting.sh, change MERLIN_COMPILER_HOME to your absolute path 2. Download gcc4.9.4 to $gcc_path specified in merlin_settings.sh and compile, add built library path to LD_LIBRARY_PATH in merlin_setting.sh 3. Download llvm6.0.0, clang 6.0.0, boost1.67.0 to the path specified in merlin_settings.sh, and compile all the packages with gcc4.9.4 built in step 2 4. source merlin_setting.sh 5. cd trunk/build; 6. cmake3 -DCMAKE_BUILD_TYPE=Release ..; 7. make -j; How to run: run "merlincc -h", follow the help message