### Sample CMakeLists.txt

Source: https://github.com/balp/arduino-mock/blob/master/README.md

Example CMakeLists.txt demonstrating how to fetch and link Catch2, googletest, and arduino-mock.

```cmake
FetchContent_Declare(Catch2
        GIT_REPOSITORY https://github.com/catchorg/Catch2.git
        GIT_TAG v2.11.1)

    FetchContent_MakeAvailable(Catch2)

    FetchContent_Declare(googletest
            GIT_REPOSITORY https://github.com/google/googletest.git
            GIT_TAG release-1.10.0)

    FetchContent_MakeAvailable(googletest)
    
    FetchContent_Declare(arduino-mock
            GIT_REPOSITORY https://github.com/balp/arduino-mock.git
            GIT_TAG cmake3)

    FetchContent_MakeAvailable(arduino-mock)

    add_executable(tests
            main.cpp
            tests.cpp)
    
    target_link_libraries(tests
            Catch2::Catch2
            arduino_mock)
    
    target_compile_features(tests PUBLIC cxx_std_11)
    set_target_properties(tests PROPERTIES CXX_EXTENSIONS OFF)
    
    add_test(NAME tests
             COMMAND tests)
```

--------------------------------

### Project Setup and Dependencies

Source: https://github.com/balp/arduino-mock/blob/master/CMakeLists.txt

Configures the CMake minimum version, project name, and finds the Threads package. It also includes logic to fetch and make googletest available if not already present.

```cmake
cmake_minimum_required(VERSION 3.14)
if (NOT DEFINED PROJECT_NAME)
    set(NOT_SUBPROJECT ON)
endif ()

project(arduino_mock)

find_package(Threads REQUIRED)

# If we are a stand alone project not included with add_subdirectory() and
# googletest, e.g. googlemock is not provided make sure to download it.
if (NOT_SUBPROJECT)
    if (NOT TARGET gmock_main)
        include(FetchContent)

        FetchContent_Declare(googletest
                GIT_REPOSITORY https://github.com/google/googletest.git
                GIT_TAG release-1.10.0)
        FetchContent_MakeAvailable(googletest)
    endif ()
endif ()
```

--------------------------------

### gmock ExternalProject Configuration

Source: https://github.com/balp/arduino-mock/blob/master/lib/gmock/CMakeLists.txt

This snippet shows how to add gmock as an external project using CMake's ExternalProject_Add command, specifying the URL, prefix, and install command.

```cmake
cmake_minimum_required(VERSION 2.8.8)
project(gmock_builder C CXX)
include(ExternalProject)

ExternalProject_Add(
    gmock
    URL https://github.com/paulsapps/gmock-1.7.0/archive/master.zip
    PREFIX ${CMAKE_CURRENT_BINARY_DIR}/gmock
    INSTALL_COMMAND ""
)
```

--------------------------------

### gtest ExternalProject Configuration

Source: https://github.com/balp/arduino-mock/blob/master/lib/gtest/CMakeLists.txt

Configures gtest as an external project using CMake's ExternalProject_Add command, specifying the URL, prefix, and an empty install command.

```cmake
message("in gtest")
project(gtest_builder C CXX)
include(ExternalProject)

ExternalProject_Add(
    gtest
    URL https://github.com/google/googletest/archive/release-1.7.0.zip
    PREFIX ${CMAKE_CURRENT_BINARY_DIR}/gtest
    INSTALL_COMMAND ""
)
```

--------------------------------

### Output Directory Properties

Source: https://github.com/balp/arduino-mock/blob/master/CMakeLists.txt

Sets the output directories for archive, library, and runtime files.

```cmake
set_target_properties(arduino_mock
        PROPERTIES
        ARCHIVE_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/dist/lib"
        LIBRARY_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/dist/lib"
        RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/dist/bin"
        )
```

--------------------------------

### Test Configuration

Source: https://github.com/balp/arduino-mock/blob/master/CMakeLists.txt

Enables testing and adds the test subdirectory if the 'test' option is set to ON.

```cmake
add_dependencies(arduino_mock gtest gmock)

option(test "Build all tests." OFF)

if (test)
    enable_testing()
    add_subdirectory(test)
endif ()
```

--------------------------------

### Library Definition and Configuration

Source: https://github.com/balp/arduino-mock/blob/master/CMakeLists.txt

Defines the arduino_mock library as a static library, specifies include directories, and links necessary libraries like gmock, gtest, and Threads.

```cmake
add_library(arduino_mock STATIC
        src/Arduino.cc
        src/EEPROM.cc
        src/OneWire.cc
        src/Serial.cc
        src/Spark.cc
        src/Wire.cc
        src/IRremote.cc
        src/SPI.cc
        src/SoftwareSerial.cc
        src/WiFi.cc
        src/serialHelper.cc
        )
target_include_directories(arduino_mock
        PRIVATE "include"
        PUBLIC "include/arduino-mock"
        INTERFACE "include/arduino-mock"
        )
target_link_libraries(arduino_mock
        gmock
        gtest
        ${CMAKE_THREAD_LIBS_INIT}
        )
target_compile_features(arduino_mock PUBLIC cxx_std_11)
set_target_properties(arduino_mock PROPERTIES CXX_EXTENSIONS OFF)
```

--------------------------------

### CMakeLists.txt Configuration

Source: https://github.com/balp/arduino-mock/blob/master/test/CMakeLists.txt

This snippet shows the CMake configuration for building the test executable, linking against the arduino_mock library and Google Test/Mock libraries.

```cmake
message ("building tests for Arduino Mock")
# include_directories(${GTEST_INCLUDE_DIRS})
file(GLOB SRCS *.cc)

add_executable(test_all test_all.cc)

target_link_libraries(test_all
    arduino_mock
    ${GTEST_LIBS_DIR}/libgtest.a
    ${GTEST_LIBS_DIR}/libgtest_main.a
    ${GMOCK_LIBS_DIR}/libgmock.a
    ${CMAKE_THREAD_LIBS_INIT}
)

add_dependencies(test_all gtest)
add_test(arduino_mock_test test_all)
```

--------------------------------

### gmock Include and Library Directories

Source: https://github.com/balp/arduino-mock/blob/master/lib/gmock/CMakeLists.txt

These snippets retrieve the source and binary directories of the gmock external project and set the GMOCK_INCLUDE_DIRS and GMOCK_LIBS_DIR variables.

```cmake
# Specify include dir
ExternalProject_Get_Property(gmock source_dir)
set(GMOCK_INCLUDE_DIRS ${source_dir}/include PARENT_SCOPE)
```

```cmake
# Specify MainTest's link libraries
ExternalProject_Get_Property(gmock binary_dir)
set(GMOCK_LIBS_DIR ${binary_dir} PARENT_SCOPE)
```

--------------------------------

### gtest Libraries Directory Property

Source: https://github.com/balp/arduino-mock/blob/master/lib/gtest/CMakeLists.txt

Retrieves the binary directory of the gtest external project and sets theGTEST_LIBS_DIR property.

```cmake
# Specify MainTest's link libraries
ExternalProject_Get_Property(gtest binary_dir)
set(GTEST_LIBS_DIR ${binary_dir} PARENT_SCOPE)
```

--------------------------------

### gtest Include Directory Property

Source: https://github.com/balp/arduino-mock/blob/master/lib/gtest/CMakeLists.txt

Retrieves the source directory of the gtest external project and sets the GTEST_INCLUDE_DIRS property.

```cmake
# Specify include dir
ExternalProject_Get_Property(gtest source_dir)
set(GTEST_INCLUDE_DIRS ${source_dir}/include PARENT_SCOPE)
```

=== COMPLETE CONTENT === This response contains all available snippets from this library. No additional content exists. Do not make further requests.