Install Google C++ Testing Framework. This script works for both MacOS and Linux

gtest_install.sh

##
## Install Google C++ Testing Framework
##


##Remove Libraries that are already installed
# Linux:
#   sudo rm -rf /usr/local/opt/gtest*
#   sudo libtool --mode=uninstall rm /usr/local/lib/libgtest.a
#   sudo libtool --mode=uninstall rm /usr/local/lib/libgtest_main.a
# Mac:
#   rm -rf /usr/local/opt/gtest*
#   glibtool --mode=uninstall rm /usr/local/lib/libgtest.la
#   glibtool --mode=uninstall rm /usr/local/lib/libgtest_main.la



##Choose the proper tools for each platform
RUN_AS=''
LIBTOOL=''
if [ "$(uname)" = "Darwin" ]; then
	LIBTOOL=glibtool
elif [ "$(uname)" = "Linux" ]; then
	RUN_AS=sudo
	LIBTOOL="$RUN_AS libtool"
	$RUN_AS apt-get -y install libtool
fi

OLD_PWD="$(pwd)"

#Download gtest
curl --silent -o gtest-1.7.0.zip http://googletest.googlecode.com/files/gtest-1.7.0.zip

#Unpack the gtest library
$RUN_AS unzip gtest-1.7.0.zip -d /usr/local/opt/
$RUN_AS ln -s gtest-1.7.0 /usr/local/opt/gtest

#Compile GTest
cd /usr/local/opt/gtest
$RUN_AS ./configure
$RUN_AS make

#Install Library files
$LIBTOOL --mode=install install lib/libgtest.la /usr/local/lib
$LIBTOOL --mode=install install lib/libgtest_main.la /usr/local/lib

#Configure Linker (for linux)
if [ "$(uname)" = "Linux" ]; then
	$RUN_AS ldconfig
fi

cd "$OLD_PWD"
rm gtest-1.7.0.zip
rm gtest_install.sh

curl --silent -L https://gist.githubusercontent.com/alghanmi/10767290/raw/gtest_install.sh -o gtest_install.sh
chmod 755 gtest_install.sh
./gtest_install.sh