Function LLVMTargetMachineEmitToMemoryBuffer 

#[unsafe(no_mangle)]
pub extern "C" fn LLVMTargetMachineEmitToMemoryBuffer(
    T: LLVMTargetMachineRef,
    M: LLVMModuleRef,
    codegen: LLVMCodeGenFileType,
    ErrorMessage: *mut *mut c_char,
    OutMemBuf: *mut LLVMMemoryBufferRef,
) -> LLVMBool