Make compile with zlib in a nonstandard location

cmake/modules/DuneAlugridMacros.cmake

@@ -43,7 +43,7 @@ if(ZLIB_FOUND)
   # register package flags is not supported in CMake with Dune 2.3
   if(NOT (("${DUNE_COMMON_VERSION_MAJOR}" STREQUAL "2")
           AND ("${DUNE_COMMON_VERSION_MINOR}" STREQUAL "3")))
-    dune_register_package_flags(INCLUDE_DIRS ${ZLIB_INCLUDE_DIRS} LIBRARIES ${ZLIB_LIBRARIES})
+    dune_register_package_flags(INCLUDE_DIRS ${ZLIB_INCLUDE_DIR} LIBRARIES ${ZLIB_LIBRARIES})
   endif()
 endif()
 

lib/CMakeLists.txt

@@ -24,6 +24,8 @@ target_link_libraries(dunealugrid ${ZOLTAN_LIBRARIES})
 set_property(TARGET dunealugrid APPEND PROPERTY
              INCLUDE_DIRECTORIES "${ZOLTAN_INCLUDE_DIRS}")
 endif()
+set_property(TARGET dunealugrid APPEND PROPERTY
+             INCLUDE_DIRECTORIES "${ZLIB_INCLUDE_DIR}")
 
 # register alu grid to all pkg flags
 dune_register_package_flags(LIBRARIES "${DUNE_ALUGRID_LIBRARY}"