installation if json11 is added as a library works now

Author: Pfeifenjoy

CMakeLists.txt

@@ -32,5 +32,5 @@ if (JSON11_BUILD_TESTS)
 endif()
 
 install(TARGETS json11 DESTINATION lib/${CMAKE_LIBRARY_ARCHITECTURE})
-install(FILES "${CMAKE_SOURCE_DIR}/json11.hpp" DESTINATION include/${CMAKE_LIBRARY_ARCHITECTURE})
-install(FILES "${CMAKE_BINARY_DIR}/json11.pc" DESTINATION lib/${CMAKE_LIBRARY_ARCHITECTURE}/pkgconfig)
+install(FILES "${CMAKE_CURRENT_SOURCE_DIR}/json11.hpp" DESTINATION include/${CMAKE_LIBRARY_ARCHITECTURE})
+install(FILES "${CMAKE_CURRENT_BINARY_DIR}/json11.pc" DESTINATION lib/${CMAKE_LIBRARY_ARCHITECTURE}/pkgconfig)