wget https://github.com/linux-test-project/lcov/releases/download/v2.0/lcov-2.0.tar.gz
tar -zxvf lcov-2.0.tar.gz
cd lcov-2.0
sudo make install

# ubuntu安装依赖项
sudo apt install -y perl libcapture-tiny-perl libdatetime-perl
# centos安装依赖项比较麻烦
sudo apt install -y perl
sudo perl -MCPAN -e 'install "包名"'

These perl packages include:

  - Capture::Tiny
  - DateTime
  - Devel::Cover
  - Digest::MD5
  - File::Spec
  - at least one flavor of JSON module.
    In order of performance/preference:
       - JSON::XS
       - Cpanel::JSON::XS
       - JSON::PP
       - JSON
 - Memory::Process
 - Module::Load::Conditional
 - Scalar::Util
 - Time::HiRes

If your system is missing any of these, then you may be able to install them
via:

   $ perl -MCPAN -e 'install "packageName"'

unzip googletest-1.12.x.zip
cd googletest-1.12.x
cmake CMakeLists.txt
make
sudo make install