header files not found even though they should be installed

edit

I created a package A which only contains a header file to use in some other packages. But when trying to use the header in project B I always get the error "File not found". I found some questions here addressing the problem as "install issue". But I have the installation in my CMakeLists.txt of package A.

I also included ${CATKIN_INCLUDE_DIRS} in project B, but it still does not find the header file.

CMakeLists.txt of A:

cmake_minimum_required(VERSION 2.8.3)
project(A)
## Find catkin macros and libraries
## if COMPONENTS list like find_package(catkin REQUIRED COMPONENTS xyz)
## is used, also find other catkin packages
find_package(catkin REQUIRED COMPONENTS
  geometry_msgs
  ndt_map
  roscpp
  rospy
  std_msgs
)

###########
## Build ##
###########

## Specify additional locations of header files
## Your package locations should be listed before other locations
# include_directories(include)
include_directories(
  ${catkin_INCLUDE_DIRS}
  include
)

#############
## Install ##
#############

## Mark cpp header files for installation
 install(DIRECTORY include/${PROJECT_NAME}/
   DESTINATION ${CATKIN_PACKAGE_INCLUDE_DESTINATION}
   FILES_MATCHING PATTERN "*.h"
   PATTERN ".svn" EXCLUDE
 )

important part of CMakeLists.txt of project B:

find_package( catkin REQUIRED COMPONENTS
   A
)
include_directories(
  include
  ${catkin_INCLUDE_DIRS}
)