我刚刚从http://www.digitalmars.com/d/download.html下载并安装了Ubuntu 64位操作系统下的DMD编译器（dmd_2.055-0_amd64.deb），但是当我尝试运行一个简单的hello.d程序时，出现了问题。
import std.stdio;
void main()
{
writeln("hello");
}
在终端上使用命令：$dmd hello.d
会显示以下错误：
/usr/lib/gcc/x86_64-linux-gnu/4.6.1/../../../../lib/libphobos2.a(datetime_48b_1ec.o): In function `_D3std8datetime5Clock11currStdTimeFNdNeZl':
std/datetime.d:(.text._D3std8datetime5Clock11currStdTimeFNdNeZl+0x1d): undefined reference to `clock_gettime'
/usr/lib/gcc/x86_64-linux-gnu/4.6.1/../../../../lib/libphobos2.a(time_c0_4d1.o): In function `_D4core4time12TickDuration12_staticCtor7OFNeZv':
src/core/time.d:(.text._D4core4time12TickDuration12_staticCtor7OFNeZv+0x1f): undefined reference to `clock_getres'
/usr/lib/gcc/x86_64-linux-gnu/4.6.1/../../../../lib/libphobos2.a(time_c0_4d1.o): In function `_D4core4time12TickDuration14currSystemTickFNdNeZS4core4time12TickDuration':
src/core/time.d:(.text._D4core4time12TickDuration14currSystemTickFNdNeZS4core4time12TickDuration+0x1f): undefined reference to `clock_gettime'
collect2: ld devolvió el estado de salida 1
--- errorlevel 1
我不知道问题出在哪里，也找不到网上的解决方案。