Made NBEngine installable + CMake restruct

engine/NBCore/CMakeLists.txt

@@ -1,3 +1,6 @@
+cmake_minimum_required(VERSION 3.10)
+project(NBCore VERSION 0.1)
+
 toAbsolutePath(NB_CORE_SOURCE 
     ./src/ErrorsImpl.cpp
     ./src/Logger.cpp
@@ -5,27 +8,64 @@ toAbsolutePath(NB_CORE_SOURCE
     ./src/StringUtils.cpp
     ./src/Utils.cpp
 )
-
 toAbsolutePath(NB_CORE_INCLUDE
-    ./ANSITerm.hpp
-    ./DataSink.hpp
-    ./Errors.hpp
-    ./ErrorsImpl.hpp
-    ./Logger.hpp
-    ./Processes.hpp
-    ./StringUtils.hpp
-    ./ThreadsafeQueue.hpp
-    ./Types.hpp
-    ./TypeTraits.hpp
-    ./Utils.hpp
+    ./include/NBCore/ANSITerm.hpp
+    ./include/NBCore/DataSink.hpp
+    ./include/NBCore/Errors.hpp
+    ./include/NBCore/ErrorsImpl.hpp
+    ./include/NBCore/Logger.hpp
+    ./include/NBCore/Processes.hpp
+    ./include/NBCore/StringUtils.hpp
+    ./include/NBCore/ThreadsafeQueue.hpp
+    ./include/NBCore/Types.hpp
+    ./include/NBCore/TypeTraits.hpp
+    ./include/NBCore/Utils.hpp
 )
 
 set(NB_CORE_SOURCE ${NB_CORE_SOURCE} PARENT_SCOPE)
 set(NB_CORE_INCLUDE ${NB_CORE_INCLUDE} PARENT_SCOPE)
 
 add_library(NBCore ${NB_CORE_SOURCE})
+add_library(NBEngine::Core ALIAS NBCore)
+target_include_directories(NBCore
+    PUBLIC "$<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include>"
+    PUBLIC "$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>"
+)
 
-target_include_directories(NBCore PUBLIC ./.)
+if (NBENGINE_INSTALL)
+    message("Installing NBCore to ${CMAKE_INSTALL_PREFIX}")
+    include(GNUInstallDirs)
+    include(CMakePackageConfigHelpers)
+    install(
+        TARGETS NBCore
+        EXPORT NBCoreTargets
+    )
+    install(
+        DIRECTORY "${PROJECT_SOURCE_DIR}/include/NBCore"
+        DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}"
+        FILES_MATCHING PATTERN "*.h" PATTERN "*.hpp"
+    )
+    install(
+        EXPORT NBCoreTargets
+        DESTINATION ${CMAKE_INSTALL_PREFIX}/cmake
+        NAMESPACE NBEngine::
+    )
+    configure_package_config_file(
+        "NBCoreConfig.cmake.in"
+        "NBCoreConfig.cmake"
+        INSTALL_DESTINATION ${CMAKE_INSTALL_PREFIX}/cmake
+        PATH_VARS CMAKE_INSTALL_LIBDIR
+    )
+    write_basic_package_version_file(
+        "${CMAKE_CURRENT_BINARY_DIR}/NBCoreConfigVersion.cmake"
+        COMPATIBILITY AnyNewerVersion 
+    )
+    install(FILES
+        "${CMAKE_CURRENT_BINARY_DIR}/NBCoreConfig.cmake"
+        "${CMAKE_CURRENT_BINARY_DIR}/NBCoreConfigVersion.cmake"
+        DESTINATION "${CMAKE_INSTALL_PREFIX}/cmake"
+    )
+endif()
 
 if (NB_BUILD_TESTS)
     add_subdirectory(./tests)