moved library system headers to separate folder

Gave the library a version in case it is build statically.

App.cpp

@@ -3,8 +3,8 @@
  */
 
 #include "App.hpp"
-#include "Window.hpp"
 #include "Debug.hpp"
+#include <NCursesPtyWindow/Window.hpp>
 
 #include <unistd.h>
 #include <utmp.h>

CMakeLists.txt

@@ -15,6 +15,9 @@ enable_testing()
 
 add_library(NCursesPtyWindow Window.cpp SingleUserInput.cpp Debug.cpp)
 
+### path to own system includes
+include_directories(SYSTEM "${CMAKE_SOURCE_DIR}/include")
+
 ### libraries
 
 include("cmake/ncurses.cmake")
@@ -40,9 +43,12 @@ add_executable(NCursesPtyApp main.cpp App.cpp)
 target_link_libraries(NCursesPtyApp NCursesPtyWindow)
 
 ### installation and packaging
-set_target_properties(NCursesPtyWindow PROPERTIES PUBLIC_HEADER "Window.hpp;SingleUserInput.hpp"
+set(NCURSES_PTY_WINDOW_SYSTEM_INCLUDE "include/NCursesPtyWindow")
+set_target_properties(NCursesPtyWindow PROPERTIES PUBLIC_HEADER "${NCURSES_PTY_WINDOW_SYSTEM_INCLUDE}/Window.hpp;${NCURSES_PTY_WINDOW_SYSTEM_INCLUDE}/SingleUserInput.hpp"
                                        VERSION "${CMAKE_PROJECT_VERSION}")
-install(TARGETS NCursesPtyWindow ARCHIVE PUBLIC_HEADER)
+include(GNUInstallDirs)
+install(TARGETS NCursesPtyWindow ARCHIVE
+                                 PUBLIC_HEADER DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/NCursesPtyWindow/")
 
 set(CPACK_PROJECT_NAME ${PROJECT_NAME})
 set(CPACK_PROJECT_VERSION ${PROJECT_VERSION})

SingleUserInput.cpp

@@ -2,7 +2,7 @@
  * @author Christian Burger (christian@krikkel.de)
  */
 
-#include "SingleUserInput.hpp"
+#include <NCursesPtyWindow/SingleUserInput.hpp>
 #include "Debug.hpp"
 
 #include <vterm.h>

Window.cpp

@@ -2,7 +2,7 @@
  * @author Christian Burger (christian@krikkel.de)
  */
 
-#include "Window.hpp"
+#include <NCursesPtyWindow/Window.hpp>
 #include "Debug.hpp"
 
 #include <cstdio>