diff --git a/libguile/Makefile.am b/libguile/Makefile.am
index 48ce44bb4..9fdbc64c8 100644
--- a/libguile/Makefile.am
+++ b/libguile/Makefile.am
@@ -41,9 +41,9 @@ guile_filter_doc_snarfage_SOURCES = c-tokenize.c
 ## For some reason, OBJEXT does not include the dot
 c-tokenize.$(OBJEXT): c-tokenize.c
 	if [ "$(cross_compiling)" = "yes" ]; then \
-		$(CC_FOR_BUILD) -c -o $@ c-tokenize.c; \
+		$(CC_FOR_BUILD) -c -o $@ $(srcdir)/c-tokenize.c; \
 	else \
-		$(COMPILE) -c -o $@ c-tokenize.c; \
+		$(COMPILE) -c -o $@ $(srcdir)/c-tokenize.c; \
 	fi
 
 ## Override default rule; this should run on BUILD host.
@@ -247,17 +247,17 @@ if HAVE_MAKEINFO
 
 guile-procedures.txt: guile-procedures.texi
 	rm -f $@
-	makeinfo --force -o $@ guile-procedures.texi || test -f $@
+	makeinfo --force -o $@ $(srcdir)/guile-procedures.texi || test -f $@
 
 else
 
 guile-procedures.txt: guile-procedures.texi
-	cp guile-procedures.texi $@
+	cp $(srcdir)/guile-procedures.texi $@
 
 endif
 
 c-tokenize.c: c-tokenize.lex
-	flex -t c-tokenize.lex > $@ || { rm $@; false; }
+	flex -t $(srcdir)/c-tokenize.lex > $@ || { rm $@; false; }
 
 schemelibdir = $(pkgdatadir)/$(VERSION)
 schemelib_DATA = guile-procedures.txt