Alternative: unconditionally install all headers, incl distributed

Author: aprokop

CMakeLists.txt

@@ -78,21 +78,17 @@ target_include_directories(ArborX INTERFACE
   $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/src>
   $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/src/geometry>
   $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/src/cluster>
+  $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/src/distributed>
   $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/src/interpolation>
   $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/src/spatial>
   $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}/include>
   $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}/ArborX>
   $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}/ArborX/geometry>
   $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}/ArborX/cluster>
+  $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}/ArborX/distributed>
   $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}/ArborX/interpolation>
   $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}/ArborX/spatial>
 )
-if (ARBORX_ENABLE_MPI)
-  target_include_directories(ArborX INTERFACE
-    $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/src/distributed>
-    $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}/ArborX/distributed>
-  )
-endif()
 
 install(TARGETS ArborX
   EXPORT ArborXTargets
@@ -149,14 +145,8 @@ install(FILES
   ${CMAKE_CURRENT_BINARY_DIR}/ArborXSettings.cmake
   DESTINATION ${CMAKE_INSTALL_DATADIR}/cmake/ArborX )
 
-if(ARBORX_ENABLE_MPI)
-  install(DIRECTORY ${PROJECT_SOURCE_DIR}/src/ DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/ArborX
-          FILES_MATCHING PATTERN "*.hpp")
-else()
-  install(DIRECTORY ${PROJECT_SOURCE_DIR}/src/ DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/ArborX
-          FILES_MATCHING PATTERN "*.hpp"
-          PATTERN "*Distribut*" EXCLUDE)
-endif()
+install(DIRECTORY ${PROJECT_SOURCE_DIR}/src/ DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/ArborX
+        FILES_MATCHING PATTERN "*.hpp")
 install(DIRECTORY ${PROJECT_BINARY_DIR}/include/ DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/ArborX
         FILES_MATCHING PATTERN "*.hpp")