[LLVMdev] Compile error of latest Dragonegg on Ubuntu with GCC 4.5

[ryan]

Hi,
When I tried to compile Dragonegg using the SVN trunk code,
I encountered failure with error message:

In file included from
> /usr/lib/i386-linux-gnu/gcc/i686-linux-gnu/4.5.2/plugin/include/rtl.h:28:0,
>                  from /home/xxx/llvm/dragonegg/src/Convert.cpp:63:
> /usr/lib/i386-linux-gnu/gcc/i686-linux-gnu/4.5.2/plugin/include/real.h:27:18:
> fatal error: mpfr.h: No such file or directory

I did some search but found few relevant results.
Any idea what's going on?
OS: Ubuntu 11.04.
GCC:4.5.2.
gcc-4.5-plugin-dev is installed.
Thanks in advance!
--
Ryan
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