Comment 1 for bug 1069683

I'm guessing that the following will fix this:

bzr rev 7886

=== modified file 'opencog/CMakeLists.txt'
--- opencog/CMakeLists.txt 2012-10-21 22:53:00 +0000
+++ opencog/CMakeLists.txt 2012-10-22 16:13:40 +0000
@@ -9,12 +9,12 @@
 ADD_SUBDIRECTORY (util)
 ADD_SUBDIRECTORY (comboreduct)
 ADD_SUBDIRECTORY (reasoning)
+ADD_SUBDIRECTORY (learning)

 IF (HAVE_ATOMSPACE)
     ADD_SUBDIRECTORY (atomspace)
     ADD_SUBDIRECTORY (benchmark)
     ADD_SUBDIRECTORY (query)
- ADD_SUBDIRECTORY (learning) # Dimensional reduction needs atomspace
     ADD_SUBDIRECTORY (nlp)
     ADD_SUBDIRECTORY (persist)
 ENDIF (HAVE_ATOMSPACE)

=== modified file 'opencog/learning/CMakeLists.txt'
--- opencog/learning/CMakeLists.txt 2012-10-12 06:25:24 +0000
+++ opencog/learning/CMakeLists.txt 2012-10-22 16:16:20 +0000
@@ -1,6 +1,9 @@

-ADD_SUBDIRECTORY (moses)
-ADD_SUBDIRECTORY (feature-selection)
+IF (HAVE_MOSES)
+ ADD_SUBDIRECTORY (moses)
+ ADD_SUBDIRECTORY (feature-selection)
+ENDIF (HAVE_MOSES)
+
 ADD_SUBDIRECTORY (statistics)

 IF (HAVE_DIMEMBED)

=== modified file 'tests/learning/CMakeLists.txt'
--- tests/learning/CMakeLists.txt 2010-11-01 16:18:59 +0000
+++ tests/learning/CMakeLists.txt 2012-10-22 16:17:40 +0000
@@ -1,4 +1,11 @@
 #ADD_SUBDIRECTORY (hillclimbing)
-ADD_SUBDIRECTORY (moses)
-ADD_SUBDIRECTORY (dimensionalembedding)
-ADD_SUBDIRECTORY (feature-selection)
+
+IF (HAVE_MOSES)
+ ADD_SUBDIRECTORY (moses)
+ ADD_SUBDIRECTORY (feature-selection)
+ENDIF (HAVE_MOSES)
+
+IF (HAVE_DIMEMBED)
+ ADD_SUBDIRECTORY (dimensionalembedding)
+ENDIF (HAVE_DIMEMBED)
+