How to make cmake from brew install the default cmake - Mac OS - macos

Question

On the terminal, I've
$ cmake --version
cmake version 3.4.1
CMake suite maintained and supported by Kitware (kitware.com/cmake).
$ which cmake
/usr/local/bin/cmake
But when I upgraded the cmake using brew:
$ brew upgrade cmake
Error: cmake 3.8.2 already installed
$ brew edit cmake
How to make cmake from brew install the default cmake ?
My formula file from brew edit cmake:
class Cmake < Formula
desc "Cross-platform make"
homepage "https://www.cmake.org/"
url "https://cmake.org/files/v3.8/cmake-3.8.2.tar.gz"
sha256 "da3072794eb4c09f2d782fcee043847b99bb4cf8d4573978d9b2024214d6e92d"
head "https://cmake.org/cmake.git"
bottle do
cellar :any_skip_relocation
sha256 "2bbeaf0866446737719aca74468290101b0c502065a02ad6e286f69fc0e69c77" => :sierra
sha256 "74ecc634b8cc6facc828cc434ec16383681736c3c2fc42dd144f78e88bd34842" => :el_capitan
sha256 "9b53dec241998124c67645be81c8e85db097404115e466cf409caf43add783ae" => :yosemite
end
devel do
url "https://cmake.org/files/v3.9/cmake-3.9.0-rc5.tar.gz"
sha256 "3ef250f93f1887d99c567542e987938bf1cb49af06275e0081b547765e03e6ac"
end
option "without-docs", "Don't build man pages"
option "with-completion", "Install Bash completion (Has potential problems with system bash)"
depends_on "sphinx-doc" => :build if build.with? "docs"
# The `with-qt` GUI option was removed due to circular dependencies if
# CMake is built with Qt support and Qt is built with MySQL support as MySQL uses CMake.
# For the GUI application please instead use `brew cask install cmake`.
def install
args = %W[
--prefix=#{prefix}
--no-system-libs
--parallel=#{ENV.make_jobs}
--datadir=/share/cmake
--docdir=/share/doc/cmake
--mandir=/share/man
--system-zlib
--system-bzip2
--system-curl
]
if build.with? "docs"
# There is an existing issue around macOS & Python locale setting
# See https://bugs.python.org/issue18378#msg215215 for explanation
ENV["LC_ALL"] = "en_US.UTF-8"
args << "--sphinx-man" << "--sphinx-build=#{Formula["sphinx-doc"].opt_bin}/sphinx-build"
end
system "./bootstrap", *args
system "make"
system "make", "install"
if build.with? "completion"
cd "Auxiliary/bash-completion/" do
bash_completion.install "ctest", "cmake", "cpack"
end
end
elisp.install "Auxiliary/cmake-mode.el"
end
test do
(testpath/"CMakeLists.txt").write("find_package(Ruby)")
system bin/"cmake", "."
end
end

Answer 1

Using brew link would work but before you have to purge the /usr/local/bin/cmake and /usr/local/bin/ccmake:
sudo rm /usr/local/bin/cmake
sudo rm /usr/local/bin/ccmake
brew link cmake
Or let brew automatically purge them:
brew link --overwrite cmake