Install tmux on macOS 10.12 without need for brew or OpenSSL

install_tmux_macos_no_brew.sh

#
# all credit to https://gist.github.com/shrayasr/8714601#gistcomment-2127790
#

## setup

TMUX_VER=2.6
LIBEVENT_VER=2.1.8-stable
TEMP_COMPILE=~/tmux-temp-compile
COMMON_INSTALL_PREFIX=/usr/local

##

echo
echo ">>> Creating and using temporary dir ${TEMP_COMPILE} for downloading and compiling libevent and tmux ..."
echo

mkdir ${TEMP_COMPILE}
cd ${TEMP_COMPILE}

echo
echo ">>> Downloading releases ..."
echo

curl -OL https://github.com/tmux/tmux/releases/download/${TMUX_VER}/tmux-${TMUX_VER}.tar.gz
curl -OL https://github.com/libevent/libevent/releases/download/release-${LIBEVENT_VER}/libevent-${LIBEVENT_VER}.tar.gz

echo
echo ">>> Extracting tmux ${TMUX_VER} and libevent ${LIBEVENT_VER} ..."
echo

tar xzf tmux-${TMUX_VER}.tar.gz
tar xzf libevent-${LIBEVENT_VER}.tar.gz

echo
echo ">>> Compiling libevent ..."
echo

cd libevent-${LIBEVENT_VER}
./configure --prefix=${COMMON_INSTALL_PREFIX} --disable-openssl
sudo make
sudo make install

echo
echo ">>> Compiling tmux ..."
echo

cd ../tmux-${TMUX_VER}
LDFLAGS="-L{COMMON_INSTALL_PREFIX}/lib" CPPFLAGS="-I{COMMON_INSTALL_PREFIX}/include" LIBS="-lresolv" ./configure --prefix=${COMMON_INSTALL_PREFIX}
make
echo
echo ">>> Installing tmux in ${COMMON_INSTALL_PREFIX}/bin ..."
echo

sudo make install

echo
echo ">>> Cleaning up by removing the temporary dir ${TEMP_COMPILE} ..."
echo

cd ..
sudo rm -rf ${TEMP_COMPILE}

Tested with 2.5 and 2.6.