improve CMake to allow for standard build/install workflows

CMakeLists.txt

-cmake_minimum_required(VERSION 3.5.1)
+cmake_minimum_required(VERSION 3.14)
 project(tfEEROS)
 
-set(CMAKE_CXX_STANDARD 14)
-
-## search eeros globally 
-# find_package(eeros)
+include(GNUInstallDirs)
 
-## include eeros library by path 
-message("EEROS path manually setted: $ENV{TFEEROS_EEROS_PATH}")
-include_directories("$ENV{TFEEROS_EEROS_PATH}/include")
-link_directories("$ENV{TFEEROS_EEROS_PATH}/lib")
-
-include_directories("include")
+set(CMAKE_CXX_STANDARD 14)
 
-add_subdirectory(src)
+find_package(EEROS REQUIRED)
+add_library(tf_eeros
+    src/TrafoMatrix.cpp
+    src/TF_Tree.cpp
+    src/MatrixExtension.cpp
+    src/Quaternion.cpp)
 
-add_subdirectory(test)
+target_link_libraries(tf_eeros PUBLIC EEROS::eeros)
+target_include_directories(tf_eeros PUBLIC $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include> $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}/${PROJECT_NAME}>)
 
+install(
+    DIRECTORY ${CMAKE_SOURCE_DIR}/include/
+    DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/${PROJECT_NAME}
+)
+install(TARGETS tf_eeros EXPORT ${PROJECT_NAME})
+install(EXPORT ${PROJECT_NAME} NAMESPACE ${PROJECT_NAME}:: DESTINATION ${CMAKE_INSTALL_DATADIR}/${PROJECT_NAME})
+install(FILES ${PROJECT_SOURCE_DIR}/cmake/${PROJECT_NAME}Config.cmake DESTINATION ${CMAKE_INSTALL_DATADIR}/${PROJECT_NAME})
\ No newline at end of file

cmake/tfEEROSConfig.cmake

+include(CMakeFindDependencyMacro)
+include(${CMAKE_CURRENT_LIST_DIR}/tfEEROS.cmake)
+
+get_target_property(interface_libs tfEEROS::tf_eeros "INTERFACE_LINK_LIBRARIES")
+
+foreach(dependency IN LISTS interface_libs)
+    message("found tfEEROS dep: ${dependency}")
+    string(FIND ${dependency} :: package_name_end)
+    string(SUBSTRING ${dependency} 0 ${package_name_end} dep_package)
+    message("package name: ${dep_package}")
+    find_dependency(${dep_package})
+endforeach()
\ No newline at end of file

src/CMakeLists.txt

-
-add_library(tfEEROS 
-		TrafoMatrix.cpp
-		TF_Tree.cpp 
-		MatrixExtension.cpp
-        Quaternion.cpp  )
-
-install(TARGETS tfEEROS LIBRARY )
-INSTALL (
-    DIRECTORY ${CMAKE_SOURCE_DIR}/include/
-    DESTINATION include
-    FILES_MATCHING PATTERN "*.h*")
-