# Download and configure the C\$1\$1 producer library code
Download and configure the code

For information about how to download and configure the C\$1\$1 producer library, see [Amazon Kinesis Video Streams CPP Producer, GStreamer Plugin and JNI](https://github.com/awslabs/amazon-kinesis-video-streams-producer-sdk-cpp).

For prerequisites and more information about this example, see [Use the C\$1\$1 producer library](producer-sdk-cpp.md).

## CMake arguments


Below is a reference table for the C\$1\$1 Producer SDK-specific CMake arguments. You can also pass the [standard CMake options](https://cmake.org/cmake/help/latest/manual/cmake-env-variables.7.html) to CMake as well.

**Important**  
These are all optional.

**Flags for including or excluding certain features**


| CMake argument | Type | Default | Explanation | 
| --- | --- | --- | --- | 
| `BUILD_DEPENDENCIES` |  Boolean  |  ON  | Build dependencies from source. Otherwise, use the dependencies that are already installed on the system. If the one of the required dependencies couldn't be found, an error will be returned. | 
| `BUILD_GSTREAMER_PLUGIN` | Boolean |  OFF  | Builds the kvssink GStreamer plugin. | 
|  `BUILD_JNI`  | Boolean |  OFF  | Builds the Java Native Interface (JNI) to be able to call this code from a Java runtime environment. | 
|  `ALIGNED_MEMORY_MODEL`  | Boolean |  OFF  | If memory allocations should be aligned to 8-byte boundaries. Some architectures don't allow for unaligned memory access. | 
| `CONSTRAINED_DEVICE` | Boolean |  OFF  | Non-Windows only. When ON, sets the thread stack size to 0.5 MiB. Needed for [Alpine Linux](https://wiki.alpinelinux.org/wiki/Main_Page) builds. Otherwise, the operating system default is used. | 
|  `BUILD_STATIC`  | Boolean |  OFF  | Build libraries and executables as [shared](https://en.wikipedia.org/wiki/Shared_library) (OFF), or [static](https://en.wikipedia.org/wiki/Static_library) (ON). | 
|  `ADD_MUCLIBC`  | Boolean |  OFF  | Link to [uClibc](https://en.wikipedia.org/wiki/UClibc) instead of the standard C library, which is a smaller C standard library designed for embedded systems. | 
|  `OPEN_SRC_INSTALL_PREFIX`  |  String  | ../open-source/local | Location to install the open-source dependencies, if building from source. | 

**Flags for cross-compilation**

**Important**  
Set these if your target and host machine CPU architectures are different.


| CMake argument | Type | Default | Explanation | 
| --- | --- | --- | --- | 
| `BUILD_LOG4CPLUS_HOST` |  String  |  ""  | Build the log4cplus dependency for the specified CPU architecture. If not set, log4cplus will auto-detect and use the host machine's CPU architecture. | 
| `BUILD_OPENSSL_PLATFORM`  |  String  |  ""  | Build the OpenSSL dependency for the specified CPU architecture. If not set, OpenSSL will auto-detect and use the host machine's CPU architecture. | 

**Flags related to testing**


| CMake argument | Type | Default | Explanation | 
| --- | --- | --- | --- | 
| `BUILD_TEST` |  Boolean  |  OFF  | Build the unit and integration tests. To run all the tests, run ./tst/producerTest from the build directory. AWS Credentials are needed to run the tests. | 
| `CODE_COVERAGE` | Boolean | OFF | Only available for GNU/Clang compilers. Enable code coverage collection with [gcov](https://gcc.gnu.org/onlinedocs/gcc/Gcov.html) and report generation. | 
| `COMPILER_WARNINGS` | Boolean | OFF | Only available for GNU/Clang compilers. Enable all compiler warnings. | 
| `ADDRESS_SANITIZER` | Boolean | OFF | Only available for GNU/Clang compilers. Build with [AddressSanitizer](https://compiler-rt.llvm.org/). | 
| `MEMORY_SANITIZER` | Boolean | OFF | Only available for GNU/Clang compilers. Build with [MemorySanitizer](https://compiler-rt.llvm.org/). | 
| `THREAD_SANITIZER` | Boolean | OFF | Only available for GNU/Clang compilers. Build with [ThreadSanitizer](https://compiler-rt.llvm.org/). | 
| `UNDEFINED_BEHAVIOR_SANITIZER` | Boolean | OFF | Only available for GNU/Clang compilers. Build with [UndefinedBehaviorSanitizer](https://compiler-rt.llvm.org/). | 

To use these CMake arguments, pass them as a space-separated list of `-Dkey=value` pairs following the `cmake ..` command. For example:

```
cmake .. -DBUILD_GSTREAMER_PLUGIN=ON -DBUILD_DEPENDENCIES=OFF -DALIGNED_MEMORY_MODEL=ON 
```

CMake will look for the compiler toolchain by following the `$PATH` variable. Before running CMake, set the `CC` and `CXX` environment variables to explicitly set the toolchain to use for cross compiling.