If i write the following in the mac terminal, it will harden with make, but do you understand the cause? Thank you

$brew upgrade gcc
==>Upgrading 1 outdated package, with result:
gcc 7.3.0->8.2.0
==>Upgrading gcc
Warning: Building gcc from source:
  The bottle needs the Xcode CLT to be installed.
==>Downloading https://ftp.gnu.org/gnu/gcc/gcc-8.2.0/gcc-8.2.0.tar.xz
Already downloaded:
patching file gcc/graphite.h
==>../configure --build = x86_64-apple-darwin17.5.0 --prefix =/usr/local/Cellar/gcc/8.2.0-
  • Answer # 1

    It's about 2 hours away