gcc - cannot find -lc and -lm in g++ linux -

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I am using Ubuntu and GCC and G ++ are working fine but today it has been shown: / P> 

  can not be found - mm-lc   
 I searched and found that something in the code with  / usr / bin / ld  To do. Which is symlink (I hope)  lbd.bdf  I have pasted that file into the directory from Ubuntu on PC's PC. It was not working.  
 I found that  -lc  means static library in libc.a. For the same way  -lm   
 I found them in my  i386-linux-folders  (the name was different).  
 I tried code barriers but the same errors   
 
 
 Make sure your libpath (in G ++) indicates directory (ies) that the libm Are located in .a and libc.a (use the -l option)

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