--- a/libinterp/Makefile.am
+++ b/libinterp/Makefile.am
@@ -25,12 +25,11 @@
 ## Search local directories before those specified by the user.
 AM_CPPFLAGS = \
   -I$(top_srcdir)/liboctave/cruft/misc \
-  -I../liboctave/array -I$(top_srcdir)/liboctave/array \
-  -I../liboctave/numeric -I$(top_srcdir)/liboctave/numeric \
-  -I../liboctave/operators -I$(top_srcdir)/liboctave/operators \
-  -I../liboctave/system -I$(top_srcdir)/liboctave/system \
-  -I../liboctave/util -I$(top_srcdir)/liboctave/util \
-  -I../liboctave -I$(top_srcdir)/liboctave \
+  -I$(top_srcdir)/liboctave/array \
+  -I$(top_builddir)/liboctave/numeric -I$(top_srcdir)/liboctave/numeric \
+  -I$(top_builddir)/liboctave/operators -I$(top_srcdir)/liboctave/operators \
+  -I$(top_srcdir)/liboctave/system \
+  -I$(top_srcdir)/liboctave/util \
   -I$(srcdir)/octave-value \
   -I$(srcdir)/operators \
   -Iparse-tree -I$(srcdir)/parse-tree \
@@ -170,7 +169,7 @@
   interp-core/libinterp-core.la \
   interpfcn/libinterpfcn.la \
   corefcn/libcorefcn.la \
-  ../liboctave/liboctave.la \
+  $(top_builddir)/liboctave/liboctave.la \
   $(LIBOCTINTERP_LINK_DEPS)
 
 # Increment these as needed and according to the rules in the libtool manual:
@@ -227,9 +226,10 @@
 ## Special rules:
 ## Mostly for sources which must be built before rest of compilation.
 
-## oct-conf.h must depend on Makefile.  Calling configure
-## may change default/config values.  However, calling configure will also
-## regenerate the Makefiles from Makefile.am and trigger the rules below.
+## oct-conf.h must depend on Makefile.
+## Calling configure may change default/config values.
+## However, calling configure will also regenerate the Makefiles from
+## Makefile.am and trigger the rules below.
 oct-conf.h: oct-conf.in.h Makefile
 	@$(do_subst_config_vals)
 

--- a/liboctave/Makefile.am
+++ b/liboctave/Makefile.am
@@ -100,7 +100,7 @@
   operators/liboperators.la \
   system/libsystem.la \
   util/libutil.la \
-  ../libgnu/libgnu.la \
+  $(top_builddir)/libgnu/libgnu.la \
   $(LIBOCTAVE_LINK_DEPS)
 
 # Increment these as needed and according to the rules in the libtool manual:

--- a/liboctave/cruft/Makefile.am
+++ b/liboctave/cruft/Makefile.am
@@ -67,6 +67,6 @@
 
 DISTCLEANFILES = \
   cruft.def \
-	ranlib/ranlib.def
-	$(nodist_libcruft_la_SOURCES)
+  ranlib/ranlib.def \
+  $(nodist_libcruft_la_SOURCES)
 

--- a/liboctave/cruft/slatec-fn/module.mk
+++ b/liboctave/cruft/slatec-fn/module.mk
@@ -78,3 +78,4 @@
 slatec-fn/derfc.f: slatec-fn/derfc.in.f Makefile
 	$(SED) -e "${F77_ISNAN_MACRO}" < $< > $@-t
 	mv $@-t $@
+

--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -22,12 +22,11 @@
 
 ## Search local directories before those specified by the user.
 AM_CPPFLAGS = \
-  -I$(srcdir)/../liboctave \
-  -I$(srcdir)/../liboctave/array \
-  -I$(srcdir)/../liboctave/cruft/misc \
-  -I$(srcdir)/../liboctave/numeric \
-  -I$(srcdir)/../liboctave/util \
-  -I$(srcdir)/../libinterp \
+  -I$(top_srcdir)/liboctave/array \
+  -I$(top_srcdir)/liboctave/cruft/misc \
+  -I$(top_srcdir)/liboctave/numeric \
+  -I$(top_srcdir)/liboctave/util \
+  -I$(top_srcdir)/libinterp \
   -I$(top_builddir)/libinterp/interpfcn \
   -I$(top_builddir)/libgnu -I$(top_srcdir)/libgnu
 
@@ -71,8 +70,8 @@
   octave-config.in.sh
 
 OCTAVE_CORE_LIBS = \
-  ../libinterp/liboctinterp.la \
-  ../liboctave/liboctave.la
+  $(top_builddir)/libinterp/liboctinterp.la \
+  $(top_builddir)/liboctave/liboctave.la
 
 include ../libgui/src/link-deps.mk
 
@@ -88,7 +87,7 @@
 
 if AMCOND_BUILD_GUI
   octave_SOURCES = main.cc
-  OCTAVE_GUI_LIBS = ../libgui/src/liboctgui.la
+  OCTAVE_GUI_LIBS = $(top_builddir)/libgui/src/liboctgui.la
   OCTAVE_GUI_CPPFLAGS = -I$(top_srcdir)/libgui/src
 else
   octave_SOURCES = main-cli.cc