Install Google Test and Google Mock on Ubuntu

CMakeLists.txt

cmake_minimum_required(VERSION 3.5)

project(example LANGUAGES CXX)

set(CMAKE_CXX_STANDARD 11)
set(CMAKE_CXX_STANDARD_REQUIRED ON)

find_package(GTest REQUIRED)
include_directories(${GTEST_INCLUDE_DIRS})

add_executable(example main.cpp)
target_link_libraries(example ${GTEST_LIBRARIES} ${GTEST_MAIN_LIBRARIES})

install_gtest_gmock.sh

cd ~
git clone https://github.com/google/googletest.git
cd googletest
mkdir build && cd build
cmake .. -DBUILD_SHARED_LIBS=ON -DINSTALL_GTEST=ON -DCMAKE_INSTALL_PREFIX:PATH=/usr
make -j8
sudo make install
sudo ldconfig

main.cpp

#include <gtest/gtest.h>

TEST(test_case, example_test)
{
    EXPECT_EQ(2, 2);
}

int main(int argc, char **argv)
{
    testing::InitGoogleTest(&argc, argv);
    return RUN_ALL_TESTS();
}

1. gist script will clone Gtest source code, build it, install it in default Ubuntu libraries directory
2. the project specific CMakeLists.txt will set Gtest as required library (it will look in the above mentioned Ubuntu directory) and link the public headers to your project executable
3. in main.cpp Gtest header is imported and used in the example test
   let me know if it was clear:)

Hi, thank you for the information. What exactly is the default ubuntu libraries directory? As you know, I follow https://www.eriksmistad.no/getting-started-with-google-test-on-ubuntu/ https://gist.github.com/Cartexius/4c437c084d6e388288201aadf9c8cdd5 and I used the CMakeLists.txt you provided. It works fine so far. Not sure what will be any issues. Removing everything is a mess again ...

…

On Tue, Jul 7, 2020 at 3:41 AM Dario Limongi ***@***.***> wrote: ***@***.**** commented on this gist. ------------------------------ 1. gist script will clone Gtest source code, build it, install it in default Ubuntu libraries directory 2. the project specific CMakeLists.txt will set Gtest as required library (it will look in the above mentioned Ubuntu directory) and link the public headers to your project executable 3. in main.cpp Gtest header is imported and used in the example test let me know if it was clear:) — You are receiving this because you commented. Reply to this email directly, view it on GitHub <https://gist.github.com/313f74fd23e4267c4a915086b84c7d3d#gistcomment-3366508>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ABMLMAP5T3Z7NCGUVLAWR33R2LGSNANCNFSM4OQW7XCA> .

Not sure why but for me it did not work with the share lib flag.

So what I did was (note the -DBUILD_SHARED_LIBS=OFF):

git clone https://github.com/google/googletest.git

cd googletest
mkdir build && cd build

cmake .. -GNinja -DBUILD_SHARED_LIBS=OFF -DINSTALL_GTEST=ON -DCMAKE_INSTALL_PREFIX:PATH=/usr
cmake --build .
sudo cmake --install .
sudo ldconfig

...furthermore my CMakeLists.txt looks a little different, as I took the one from the official CMake documentation (https://cmake.org/cmake/help/v3.6/module/FindGTest.html) :

enable_testing()
find_package(GTest REQUIRED)

add_executable(foo foo.cc)
target_link_libraries(foo GTest::GTest GTest::Main)

add_test(AllTestsInFoo foo)

Never specify -DCMAKE_INSTALL_PREFIX:PATH=/usr, unless you want to break your system, as it will inevitably lead to conflicts with files managed by the system package manager (like apt). The default CMake install prefix, /usr/local, sidesteps this issue by installing files in a separate directory hierarchy - this is still less ideal than installing libgtest-dev and libgmock-dev with apt, but won't break your system. Generally speaking, never override defaults unless you really know what you're doing!