How do I tune template instantiation limits with GCC for C++?

To tune template instantiation limits when using GCC for C++, you can utilize compiler flags to modify the behavior of the compiler regarding template instantiation depth and size. This is especially useful to avoid issues related to excessive template instantiation which can lead to longer compile times or compilation failures.

Example of tuning template instantiation limits

Below is an example of how to set these limits using the GCC compiler flags:

g++ -ftemplate-depth=100 -fmax-template-instantiation-depth=100 my_template.cpp

In this example:

  • -ftemplate-depth=100: Sets the maximum depth of template instantiation.
  • -fmax-template-instantiation-depth=100: Specifies the maximum number of template instantiations allowed before giving an error.

You may need to adjust the numbers based on your specific application needs to optimize compilation speed and error-free builds.


GCC C++ template instantiation compile time compiler flags

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