Why Does \"Undefined Symbol: __gxx_personality_v0\" Occur When Linking C Code with `gcc`?

Undefined Symbol: "__gxx_personality_v0" When Linking

While attempting to compile a seemingly simple C program using "gcc," many developers encounter an infuriating error: "Undefined symbol ___gxx_personality_v0." This frustrating error message can leave one scratching their head, wondering what went wrong.

Fear not, as the solution is surprisingly straightforward. The error message implies that the compiler is not recognizing the C standard personality routine. To remedy this, simply replace "gcc" with "g " in the compilation command line. G is the GNU compiler specifically designed for C programming and includes the necessary support for the C standard personality routine.

Alternatively, if you are adamant about utilizing "gcc," you can add the "-lstdc " flag to the command line. This flag instructs the linker to include the standard C library, which contains the definition for the missing symbol.

Why the Difference Between "gcc" and "g "?

"gcc" is a generic C compiler, while "g " is a compiler specifically designed for C . As a result, "g " includes additional features and optimization techniques tailored to C programs. These differences manifest themselves in the inclusion of the C standard personality routine, which "gcc" does not automatically recognize.

Conclusion

By heeding these simple adjustments to your compilation command line, you can swiftly overcome the "undefined symbol ___gxx_personality_v0" error. Remember, when compiling C programs, "g " is your steadfast companion, ensuring seamless compilation and program execution. Embrace the power of "g " and witness the eradication of such perplexing errors from your coding endeavors.

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