Help me solve this error: fatal: libstdc++.so.5: No such file or directory !!

[tran trung dung~]

I compile a program using STL on GNU environment and
the result like:
> g++ ir1.c
> a.out
ld.so.1: a.out: fatal: libstdc++.so.5: open failed: No
such file or directory
Killed
> g++ -o ir1 ir1.c
> ldd ir1
        libstdc++.so.5 =>        (file not found)
        libm.so.1 =>     /usr/lib/libm.so.1
        libgcc_s.so.1 =>         (file not found)
        libc.so.1 =>     /usr/lib/libc.so.1
        libdl.so.1 =>    /usr/lib/libdl.so.1
       
/usr/platform/SUNW,Sun-Fire-880/lib/libc_psr.so.1

Please help me to overcome this problem
Thanks
TTDUNG


		
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