### Include Directories Setup

Source: https://github.com/pothosware/soapyrtlsdr/blob/master/CMakeLists.txt

Configures include paths for the current source directory and RTLSDR headers.

```cmake
include_directories(${CMAKE_CURRENT_SOURCE_DIR})
include_directories(${RTLSDR_INCLUDE_DIRS})
```

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

### CMake Minimum Version and Project Setup

Source: https://github.com/pothosware/soapyrtlsdr/blob/master/CMakeLists.txt

Sets the minimum required CMake version and defines the project name and language.

```cmake
cmake_minimum_required(VERSION 2.8.12...3.10)
project(SoapyRTLSDR CXX)
```

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

### Uninstall Target Configuration

Source: https://github.com/pothosware/soapyrtlsdr/blob/master/CMakeLists.txt

Adds a custom 'uninstall' target and configures the uninstall script using a template.

```cmake
add_custom_target(uninstall
    "${CMAKE_COMMAND}" -P "${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake")
configure_file(
    "${CMAKE_CURRENT_SOURCE_DIR}/cmake/cmake_uninstall.cmake.in"
    "${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake"
    IMMEDIATE @ONLY)
```

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

### Enable C++11 Features for GCC/Clang

Source: https://github.com/pothosware/soapyrtlsdr/blob/master/CMakeLists.txt

Enables C++11 standard and adds necessary flags like -pthread for GCC and Clang compilers. Also disables warnings for unused parameters.

```cmake
if("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU" OR "${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")

    #C++11 is a required language feature for this project
    include(CheckCXXCompilerFlag)
    CHECK_CXX_COMPILER_FLAG("-std=c++11" HAS_STD_CXX11)
    if(HAS_STD_CXX11)
        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
    else(HAS_STD_CXX11)
        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++0x")
    endif()

    #Thread support enabled (not the same as -lpthread)
    list(APPEND RTLSDR_LIBRARIES -pthread)

    #disable warnings for unused parameters
    add_compile_options(-Wall -Wextra -Wno-unused-parameter)
endif()
```

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

### Define SoapySDR Module

Source: https://github.com/pothosware/soapyrtlsdr/blob/master/CMakeLists.txt

Uses the SOAPY_SDR_MODULE_UTIL macro to define the rtlsdrSupport target, specifying source files and linking libraries.

```cmake
set(OTHER_LIBS "" CACHE STRING "Other libraries")

SOAPY_SDR_MODULE_UTIL(
    TARGET rtlsdrSupport
    SOURCES
        SoapyRTLSDR.hpp
        Registration.cpp
        Settings.cpp
        Streaming.cpp
    LIBRARIES
        ${RTLSDR_LIBRARIES}
        ${ATOMIC_LIBS}
        ${OTHER_LIBS}
)
```

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

### Check for Atomics Support

Source: https://github.com/pothosware/soapyrtlsdr/blob/master/CMakeLists.txt

Includes a CMake module to check for C++ atomics support and sets a library variable if needed.

```cmake
include(CheckAtomic)
if(NOT HAVE_CXX_ATOMICS_WITHOUT_LIB OR NOT HAVE_CXX_ATOMICS64_WITHOUT_LIB)
    set(ATOMIC_LIBS "atomic")
endif()
```

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

### Check for RTLSDR Bias-Tee and Dithering Support

Source: https://github.com/pothosware/soapyrtlsdr/blob/master/CMakeLists.txt

Checks if the rtlsdr library supports bias-tee and dithering functions using CheckFunctionExists. Defines preprocessor macros if supported.

```cmake
include(CheckFunctionExists)
set(CMAKE_REQUIRED_LIBRARIES ${RTLSDR_LIBRARIES})
check_function_exists(rtlsdr_set_bias_tee HAS_RTLSDR_SET_BIAS_TEE)
check_function_exists(rtlsdr_set_dithering HAS_RTLSDR_SET_DITHERING)
unset(CMAKE_REQUIRED_LIBRARIES)
if (HAS_RTLSDR_SET_BIAS_TEE)
    add_definitions(-DHAS_RTLSDR_SET_BIAS_TEE)
endif()
if (HAS_RTLSDR_SET_DITHERING)
    add_definitions(-DHAS_RTLSDR_SET_DITHERING)
endif()
```

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

### Enable C++11 Features for Apple Clang

Source: https://github.com/pothosware/soapyrtlsdr/blob/master/CMakeLists.txt

Sets specific C++11 flags for Clang compiler on Apple platforms.

```cmake
if (APPLE)
   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -Wc++11-extensions")
endif(APPLE)
```

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

### Find SoapySDR Dependency

Source: https://github.com/pothosware/soapyrtlsdr/blob/master/CMakeLists.txt

Locates the SoapySDR library and its development files. Exits if not found.

```cmake
find_package(SoapySDR "0.4.0" NO_MODULE REQUIRED)
if (NOT SoapySDR_FOUND)
    message(FATAL_ERROR "Soapy SDR development files not found...")
endif ()
```

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

### Find RTLSDR Dependency

Source: https://github.com/pothosware/soapyrtlsdr/blob/master/CMakeLists.txt

Locates the RTLSDR library and its development files. Exits if not found and prints include directories and libraries.

```cmake
list(APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR})
find_package(RTLSDR)

if (NOT RTLSDR_FOUND)
    message(FATAL_ERROR "RTL-SDR development files not found...")
endif ()
message(STATUS "RTLSDR_INCLUDE_DIRS - ${RTLSDR_INCLUDE_DIRS}")
message(STATUS "RTLSDR_LIBRARIES - ${RTLSDR_LIBRARIES}")
```

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