diff --git a/lib/com_err/Makefile.in b/lib/com_err/Makefile.in
index f6d96a66e..fce147705 100644
--- a/lib/com_err/Makefile.in
+++ b/lib/com_err/Makefile.in
@@ -94,8 +94,9 @@ TAGS: $(SOURCES)
 	etags $(SOURCES)
 
 clean:
-	rm -f $(LIB) *.o *.a krb_err.c krb_err.h parse.h parse.c lex.c \
-	$(lib_LIBRARIES) $(bin_PROGRAMS)
+	rm -f $(LIB) *.o *.a *.so *.so.* so_locations \
+	krb_err.c krb_err.h parse.h parse.c lex.c \
+	$(lib_LIBRARIES) $(bin_PROGRAMS) $(EXTRA_SOURCES)
 
 mostlyclean: clean
 
diff --git a/lib/des/Makefile.in b/lib/des/Makefile.in
index 10e955531..657979970 100644
--- a/lib/des/Makefile.in
+++ b/lib/des/Makefile.in
@@ -101,7 +101,7 @@ check: destest$(EXECSUFFIX) mdtest$(EXECSUFFIX)
 	./mdtest$(EXECSUFFIX)
 
 clean:
-	rm -f $(LIB) *.o *.a $(PROGS)
+	rm -f $(LIB) *.so *.so.* so_locations *.o *.a $(PROGS)
 
 mostlyclean: clean
 
diff --git a/lib/editline/Makefile.in b/lib/editline/Makefile.in
index f4d50317e..a94d3fc98 100644
--- a/lib/editline/Makefile.in
+++ b/lib/editline/Makefile.in
@@ -61,7 +61,7 @@ TAGS: $(SOURCES)
 check:
 
 clean:
-	rm -f $(LIB) *.o *.a
+	rm -f $(LIB) *.o *.a *.so *.so.* so_locations
 
 mostlyclean: clean
 
diff --git a/lib/kafs/Makefile.in b/lib/kafs/Makefile.in
index 713b8034e..24e6d73b2 100644
--- a/lib/kafs/Makefile.in
+++ b/lib/kafs/Makefile.in
@@ -69,7 +69,7 @@ TAGS: $(SOURCES)
 check:
 
 clean:
-	rm -f $(LIB) *.o *.a $(EXTRASOURCE)
+	rm -f $(LIB) *.o *.a *.so *.so.* so_locations $(EXTRA_SOURCE)
 
 mostlyclean: clean
 
diff --git a/lib/otp/Makefile.in b/lib/otp/Makefile.in
index 25df67001..0d02b59ef 100644
--- a/lib/otp/Makefile.in
+++ b/lib/otp/Makefile.in
@@ -79,7 +79,7 @@ check:	otptest$(EXECSUFFIX)
 	./otptest$(EXECSUFFIX)
 
 clean:
-	rm -f $(LIB) $(PROGS) *.o *.a
+	rm -f $(LIB) $(PROGS) *.o *.a *.so *.so.* so_locations
 
 mostlyclean: clean
 
diff --git a/lib/sl/Makefile.in b/lib/sl/Makefile.in
index d8976968f..b68fbf1d8 100644
--- a/lib/sl/Makefile.in
+++ b/lib/sl/Makefile.in
@@ -88,7 +88,7 @@ TAGS: $(SOURCES)
 check:
 
 clean:
-	rm -f $(sl_LIB) $(PROGS) *.o *.a
+	rm -f $(sl_LIB) $(PROGS) lex.c parse.c parse.h *.o *.a *.so *.so.* so_locations
 
 mostlyclean: clean