diff --git a/lib/CMakeLists.txt b/lib/CMakeLists.txt
index f822c8e..591a588 100644
--- a/lib/CMakeLists.txt
+++ b/lib/CMakeLists.txt
@@ -69,8 +69,9 @@ set(ngtcp2_SOURCES
 )
 
 set(ngtcp2_INCLUDE_DIRS
-  "${CMAKE_CURRENT_SOURCE_DIR}/includes"
-  "${CMAKE_CURRENT_BINARY_DIR}/includes"
+  "$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/includes>"
+  "$<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}/includes>"
+  "$<INSTALL_INTERFACE:include>"
 )
 
 # Public shared library
@@ -85,6 +86,7 @@ if(ENABLE_SHARED_LIB)
   target_include_directories(ngtcp2 PUBLIC ${ngtcp2_INCLUDE_DIRS})
 
   install(TARGETS ngtcp2
+    EXPORT unofficial-ngtcp2-config
     ARCHIVE DESTINATION "${CMAKE_INSTALL_LIBDIR}"
     LIBRARY DESTINATION "${CMAKE_INSTALL_LIBDIR}"
     RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}")
@@ -102,10 +104,18 @@ if(HAVE_CUNIT OR ENABLE_STATIC_LIB)
   target_compile_definitions(ngtcp2_static PUBLIC "-DNGTCP2_STATICLIB")
   target_include_directories(ngtcp2_static PUBLIC ${ngtcp2_INCLUDE_DIRS})
   if(ENABLE_STATIC_LIB)
+    add_library(ngtcp2 INTERFACE)
+    target_link_libraries(ngtcp2 INTERFACE ngtcp2_static)
     install(TARGETS ngtcp2_static
+      ngtcp2
+      EXPORT unofficial-ngtcp2-config
       DESTINATION "${CMAKE_INSTALL_LIBDIR}")
   endif()
 endif()
+install(
+  EXPORT unofficial-ngtcp2-config
+  NAMESPACE unofficial::ngtcp2::
+  DESTINATION share/unofficial-ngtcp2)
 
 install(FILES "${CMAKE_CURRENT_BINARY_DIR}/libngtcp2.pc"
   DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")