Install header.

CMakeLists.txt

@@ -46,6 +46,7 @@ if(CMAKE_BUILD_TYPE STREQUAL "Debug")
 endif()
 
 add_subdirectory(src)
+add_subdirectory(include)
 add_subdirectory(cmake)
 add_subdirectory(pkg-config)
 

include/CMakeLists.txt

@@ -1,4 +1,4 @@
 include(GNUInstallDirs)
 
-install("identiconpp.hpp"
+install(FILES "identiconpp.hpp"
   DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}")