cmake_minimum_required(VERSION 2.8.12) project(VSNASM C ASM_NASM) if(CMAKE_SIZEOF_VOID_P EQUAL 8) add_definitions(-DTESTx64) string(APPEND CMAKE_ASM_NASM_FLAGS " -DTEST2x64") else() add_definitions(-DTESTi386) endif() include_directories(${CMAKE_CURRENT_SOURCE_DIR}/include) add_executable(VSNASM main.c foo.asm)