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FRAT as a Library In addition to command line executables, FRAT provides a C++ library that can be used in external projects. Since FRAT is currently only available as source code, you must first follow the instructions in the Installation Guide to build FRAT. Using libFRAT in an External Project Once built, the steps for using FRAT in your own CMake project are: In your CMakeLists.txt file, find the FRAT project find_package(FRAT REQUIRED) if(FRAT_FOUND) include(${FRAT_USE_FILE}) else(FRAT_FOUND) message(FATAL_ERROR "FRAT not found. Please set FRAT_DIR.") endif(FRAT_FOUND) When building an executable or library that uses FRAT, make sure to link against the libraries in ${FRAT_LIBRARIES} add_library(bar bar.cxx) target_link_libraries(bar ${FRAT_LIBRARIES}) add_executable(foo foo.cxx) target_link_libraries(foo bar ${FRAT_LIBRARIES}) There is currently no installation system for FRAT, so you will most likely need to manually specify FRAT_DIR when configuring your project with CMake Basic Concepts in FRAT This section outlines some of the basics of the FRAT project so you can learn how to use libFRAT in your own project.