Import('env') any_target_sources = Split(''' src/app/main.cpp src/os/draw.cpp src/os/panic.cpp src/os/tty.cpp src/cstdlib/assert.cpp src/cstdlib/stdio.cpp src/cstdlib/stdlib.cpp src/cstdlib/string.cpp ''') env.Append(KERNEL_SOURCES = [env.File(f) for f in any_target_sources]) Return('env')