Why Do I Get the \'Undefined Symbol \'___gxx_personality_v0\'\' Error When Compiling C Code with GCC?

Undefined Symbol "___gxx_personality_v0" in GCC Builds

When compiling C code with the command line gcc test.cpp, developers may encounter the error:

Undefined symbols:
  "___gxx_personality_v0", referenced from:
  etc...

This error occurs because gcc is intended for compiling C code. To build C code, use the C compiler g instead:

g++ test.cpp

Alternatively, if gcc must be used, add the -lstdc flag to the command line:

gcc test.cpp -lstdc++

This flag links the Standard C Library, which contains the necessary symbols.

Running md5 on the resulting executables (.a.out) from both g and gcc with -lstdc yields identical output, indicating that they are equivalent.

Therefore, using g is generally recommended for compiling C code for simplicity and compatibility.

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