Install libgccjit-6-doc by entering the following commands in the terminal:
sudo apt update sudo apt install libgccjit-6-doc
Description:
GCC just-in-time compilation (documentation)
libgccjit provides an embeddable shared library with an API for adding compilation to existing programs using GCC.
Homepage: http://gcc.gnu.org/
Version: 6.4.0-17ubuntu1
Section: universe/doc