diff --git a/katabatic/CMakeLists.txt b/katabatic/CMakeLists.txt
index d51483b8..594c27ec 100644
--- a/katabatic/CMakeLists.txt
+++ b/katabatic/CMakeLists.txt
@@ -18,7 +18,32 @@ IF(COMMAND CMAKE_POLICY)
   CMAKE_POLICY(SET CMP0003 NEW)
 ENDIF(COMMAND CMAKE_POLICY)
 
-SET(CMAKE_MODULE_PATH "$ENV{HURRICANE_TOP}/share/cmake_modules/")
+# This macro has to be included in all the tools CMakeLists.txt as it's
+# the sole means of localizing other tools/projects.
+MACRO(SETUP_PROJECT_PATHS project)
+  IF( NOT("$ENV{${project}_USER_TOP}" STREQUAL "") )
+    MESSAGE("-- ${project}_USER_TOP is set to $ENV{${project}_USER_TOP}")
+    SET(${project}_DIR_SEARCH "$ENV{${project}_USER_TOP}")
+    SET(PROJECT_MODULE_PATH   "$ENV{${project}_USER_TOP}/share/cmake_modules/")
+    LIST(FIND CMAKE_MODULE_PATH "${PROJECT_MODULE_PATH}" DIR_INDEX)
+    IF( DIR_INDEX LESS 0)
+      LIST(APPEND CMAKE_MODULE_PATH "${PROJECT_MODULE_PATH}")
+    ENDIF( DIR_INDEX LESS 0)
+  ENDIF( NOT("$ENV{${project}_USER_TOP}" STREQUAL "") )
+  
+  IF( NOT("$ENV{${project}_TOP}" STREQUAL "") )
+    MESSAGE("-- ${project}_TOP is set to $ENV{${project}_TOP}")
+    LIST(APPEND ${project}_DIR_SEARCH     "$ENV{${project}_TOP}")
+    SET(PROJECT_MODULE_PATH               "$ENV{${project}_TOP}/share/cmake_modules/")
+    LIST(FIND CMAKE_MODULE_PATH "${PROJECT_MODULE_PATH}" DIR_INDEX)
+    IF( DIR_INDEX LESS 0)
+      LIST(APPEND CMAKE_MODULE_PATH "${PROJECT_MODULE_PATH}")
+    ENDIF( DIR_INDEX LESS 0)
+  ENDIF( NOT("$ENV{${project}_TOP}" STREQUAL "") )
+ENDMACRO(SETUP_PROJECT_PATHS project)
+
+SETUP_PROJECT_PATHS(IO)
+SETUP_PROJECT_PATHS(CORIOLIS)
 
 SET(QT_USE_QTXML "true")
 
diff --git a/katabatic/cmake_modules/FindKATABATIC.cmake b/katabatic/cmake_modules/FindKATABATIC.cmake
index 987c7a5e..cfcf5211 100644
--- a/katabatic/cmake_modules/FindKATABATIC.cmake
+++ b/katabatic/cmake_modules/FindKATABATIC.cmake
@@ -12,14 +12,12 @@ SET(KATABATIC_DIR_MESSAGE "Set the KATABATIC_INCLUDE_DIR cmake cache entry to th
 
 # don't even bother under WIN32
 IF(UNIX)
-
-  SET(KATABATIC_DIR_SEARCH $ENV{CORIOLIS_TOP} $ENV{HURRICANE_TOP})
   #
   # Look for an installation.
   #
   FIND_PATH(KATABATIC_INCLUDE_PATH NAMES katabatic/KatabaticEngine.h PATHS
     # Look in other places.
-    ${KATABATIC_DIR_SEARCH}
+    ${CORIOLIS_DIR_SEARCH}
     PATH_SUFFIXES include/coriolis
     # Help the user find it if we cannot.
     DOC "The ${KATABATIC_INCLUDE_PATH_DESCRIPTION}"
@@ -27,7 +25,7 @@ IF(UNIX)
 
   FIND_LIBRARY(KATABATIC_LIBRARY_PATH
     NAMES katabatic
-    PATHS ${KATABATIC_DIR_SEARCH}
+    PATHS ${CORIOLIS_DIR_SEARCH}
     PATH_SUFFIXES lib
     # Help the user find it if we cannot.
     DOC "The ${KATABATIC_INCLUDE_PATH_DESCRIPTION}"
@@ -35,7 +33,7 @@ IF(UNIX)
 
   FIND_LIBRARY(KATABATIC_STATIC_LIBRARY_PATH
     NAMES katabatic-static
-    PATHS ${KATABATIC_DIR_SEARCH}
+    PATHS ${CORIOLIS_DIR_SEARCH}
     PATH_SUFFIXES lib
     # Help the user find it if we cannot.
     DOC "The ${KATABATIC_INCLUDE_PATH_DESCRIPTION}"