CMake configuration for 'challenge_project' with googletest unit testing and benchmarking

CMakeLists.txt

# Description: Build configuration for the "challenge_project", including unit tests with Google's googletest and performance
#              benchmarks with Google's benchmark library. The executables generated are "my_test" for testing and "my_bench" 
#              for benchmarking.
# Compatibility: Requires CMake version 3.25 and a C++17 compatible compiler.
# Dependencies: Google's googletest (v1.13.0) and Google's benchmark (v1.7.1) libraries, pthread library.

cmake_minimum_required(VERSION 3.25)
set(CMAKE_CXX_STANDARD 17)
project(challenge_project)

include(ExternalProject)
set(EXTERNAL_DEPENDENCIES ${CMAKE_CURRENT_BINARY_DIR}/../external)
## Download and configure googletest
ExternalProject_Add(
    gtest
    GIT_REPOSITORY https://github.com/google/googletest.git
    GIT_TAG v1.13.0
    PREFIX ${EXTERNAL_DEPENDENCIES}/gtest
    INSTALL_COMMAND ""
    UPDATE_COMMAND ""
)

# Get gtest ready for linking and including
ExternalProject_Get_Property(gtest SOURCE_DIR BINARY_DIR)
set(GTEST_LIB ${BINARY_DIR}/lib/libgtest.a)
include_directories(${SOURCE_DIR}/googletest/include)

## Download and configure google benchmark
ExternalProject_Add(
    benchmark
    GIT_REPOSITORY https://github.com/google/benchmark.git
    GIT_TAG v1.7.1
    PREFIX ${EXTERNAL_DEPENDENCIES}/benchmark
    INSTALL_COMMAND ""
    UPDATE_COMMAND ""
    CMAKE_ARGS -DBENCHMARK_ENABLE_TESTING=OFF
)

ExternalProject_Get_Property(benchmark SOURCE_DIR BINARY_DIR)
set(BENCHMARK_LIB ${BINARY_DIR}/src/libbenchmark.a)
include_directories(${SOURCE_DIR}/include)

## Configure executables

add_executable(my_test  main.cpp solution.cpp tests.cpp)
add_executable(my_bench solution.cpp benchmarks.cpp)

target_link_libraries(my_test  ${GTEST_LIB}     pthread)
target_link_libraries(my_bench ${BENCHMARK_LIB} ${GTEST_LIB} pthread)