title: std::regex - C++ Linux undefined reference link errors
body: <p>I have been researching this all afternoon. I need to use regex on an embedded Linux project. It is not possible to use boost. I compile but run into linker errors - undefined references to the regex functions. I have tried adding the -std=c++11 option to the compiler command, and have tried using the #include without success. Can anyone tell me if there is a library, option or setting to try to get a regex program to build?</p>
  
  <p>The answers I have seen so far seem to suggest that regex is only partly implemented. Can anyone tell me if this is true and what parts have been implemented?</p>
  
  <p>Thanks in advance</p>
  
  <p>John Babrick</p>