diff --git a/src/Makefile b/src/Makefile
index 2d365b15d70..9905be869a0 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -108,6 +108,9 @@ check_portaudio:
 clean: rmlibdir
 	-for x in $(SUBDIRS) $(EXT_SUBDIRS); do $(MAKE) -C $$x clean; done
 
+distclean: clean
+	-for x in $(SUBDIRS) $(EXT_SUBDIRS); do $(MAKE) -C $$x distclean; done
+
 test: $(addsuffix /test, $(SUBDIRS))
 
 ext_test: $(addsuffix /test, $(EXT_SUBDIRS))
@@ -124,6 +127,8 @@ cudavalgrind:
 valgrind:
 	-for x in $(MEMTESTDIRS); do $(MAKE) -C $$x valgrind || { echo "valgrind on $$x failed"; exit 1; }; done
 
+base/.depend.mk:
+	$(MAKE) depend
 
 depend: $(addsuffix /depend, $(SUBDIRS))
 
@@ -153,7 +158,7 @@ bin fstbin gmmbin fgmmbin sgmmbin sgmm2bin featbin nnetbin nnet2bin nnet3bin cha
  lm decoder lat cudamatrix nnet nnet2 nnet3 ivector chain kws online2
 
 #2)The libraries have inter-dependencies
-base:
+base: base/.depend.mk
 matrix: base
 thread: base
 util: base matrix thread
diff --git a/src/configure b/src/configure
index bc414a8eb0d..1b94d744228 100755
--- a/src/configure
+++ b/src/configure
@@ -14,12 +14,14 @@
 # ./configure --mkl-root=/opt/intel/mkl
 # ./configure --mkl-root=/opt/intel/mkl --threaded-math=yes
 # ./configure --mkl-root=/opt/intel/mkl --threaded-math=yes --mkl-threading=tbb
-#        This is for MKL 11.3 -- which does not seem  to provide Intel OMP libs
+#        # This is for MKL 11.3, which does not seem  to provide Intel OMP libs
 # ./configure  --openblas-root=../tools/OpenBLAS/install  # before doing
 #        # this, cd to ../tools and type "make openblas".  Note:
 #        # this is not working correctly on all platforms, do "make test"
 #        # and look out for segmentation faults.
 # ./configure --atlas-root=../tools/ATLAS/build
+# ./configure --use-cuda=no   # disable CUDA detection (will build cpu-only
+#                             # version of kaldi even on CUDA-enabled machine
 
 #This should be incremented after every significant change of the configure script
 #I.e. after each change that affects the kaldi.mk or the build system as whole
diff --git a/src/makefiles/default_rules.mk b/src/makefiles/default_rules.mk
index 3d3f963a71f..a329ee86706 100644
--- a/src/makefiles/default_rules.mk
+++ b/src/makefiles/default_rules.mk
@@ -67,6 +67,9 @@ $(BINFILES): $(LIBFILE) $(XDEPENDS)
 clean:
 	-rm -f *.o *.a *.so $(TESTFILES) $(BINFILES) $(TESTOUTPUTS) tmp* *.tmp *.testlog
 
+distclean: clean
+	-rm -f .depend.mk
+
 $(TESTFILES): $(LIBFILE) $(XDEPENDS)
 
 test_compile: $(TESTFILES)