CMake will now complain if the user does not set min. splitting and max. coalescing sizes.

DefineOptions.cmake

@@ -71,21 +71,37 @@ else(BLOCKS_ORGANIZATION STREQUAL "dll")
 endif(BLOCKS_ORGANIZATION STREQUAL "dll")
 
 if(WITH_COALESCING STREQUAL "fixed")
+  if(NOT DEFINED MAX_COALESCE_SIZE)
+    message(FATAL_ERROR "You have to set MAX_COALESCE_SIZE by using -DMAX_COALESCE_SIZE={size}.")
+  endif(NOT DEFINED MAX_COALESCE_SIZE)
   if (MULTIPLE_HEAPS)
+    # Coalescing on multiple heaps requires heap ownership information per
+    # block
     set(WITH_OWNERSHIP ON)
   endif (MULTIPLE_HEAPS)
   set(COALESCING_FIXED ON)
 elseif(WITH_COALESCING STREQUAL "variable")
+  if(NOT DEFINED MAX_COALESCE_SIZE)
+    message(FATAL_ERROR "You have to set MAX_COALESCE_SIZE by using -DMAX_COALESCE_SIZE={size}.")
+  endif(NOT DEFINED MAX_COALESCE_SIZE)
   set(WITH_KNOBS ON)
   if (MULTIPLE_HEAPS)
+    # Coalescing on multiple heaps requires heap ownership information per
+    # block
     set(WITH_OWNERSHIP ON)
   endif (MULTIPLE_HEAPS)
   set(COALESCING_VARIABLE ON)
 endif(WITH_COALESCING STREQUAL "fixed")
 
 if(WITH_SPLITTING STREQUAL "fixed")
+  if(NOT DEFINED MIN_SPLITTING_SIZE)
+	  message(FATAL_ERROR "You have to set MIN_SPLITTING_SIZE by using -DMIN_SPLITTING_SIZE={size}.")
+  endif(NOT DEFINED MIN_SPLITTING_SIZE)
   set(SPLITTING_FIXED ON)
 elseif(WITH_SPLITTING STREQUAL "variable")
+  if(NOT DEFINED MIN_SPLITTING_SIZE)
+	  message(FATAL_ERROR "You have to set MIN_SPLITTING_SIZE by using -DMIN_SPLITTING_SIZE={size}.")
+  endif(NOT DEFINED MIN_SPLITTING_SIZE)
   set(WITH_KNOBS ON)
   set(SPLITTING_VARIABLE ON)
 endif(WITH_SPLITTING STREQUAL "fixed")