Hello, Samuel > llvm-g++ -Illvm\include -D__STDC_LIMIT_MACROS -D__STDC_CONSTANT_MACROS -c -emit-llvm -omain.bc main.cpp Ok. How was llvm-g++ built? Have you used release tarball, or built everything by hands? -- With best regards, Anton Korobeynikov Faculty of Mathematics and Mechanics, Saint Petersburg State University