diff --git a/packages/Dialect.defs.in b/packages/Dialect.defs.in
index ab04aa594..bc3aff68a 100644
--- a/packages/Dialect.defs.in
+++ b/packages/Dialect.defs.in
@@ -50,7 +50,7 @@ CFLAGS=$(COFLAGS) $(CWFLAGS) $(CMFLAGS) $(CIFLAGS) $(PKGCFLAGS) @DEFS@
 LDSOFLAGS=@LDFLAGS@ @EXTRA_LIBS_FOR_SWIDLLS@
 LDFLAGS=$(PKGLDFLAGS)
 
-MKINDEX=$(PL) -f none -g make -t halt
+MKINDEX=(cd $(srcdir) ; $(PL) -f none -g make -t halt)
 
 .txt.tex:
 	swipl -f script.pl -g "doc_latex('$*.txt','$*.tex',[stand_alone(false)]),halt" -t "halt(1)"
diff --git a/packages/clib b/packages/clib
index f0e208de6..e6b682d90 160000
--- a/packages/clib
+++ b/packages/clib
@@ -1 +1 @@
-Subproject commit f0e208de69f5303648fe1d035e2bfa164411d42d
+Subproject commit e6b682d909a4d63ee876af70c738d900449625fb
diff --git a/packages/zlib b/packages/zlib
index 1028ec347..2a859fd75 160000
--- a/packages/zlib
+++ b/packages/zlib
@@ -1 +1 @@
-Subproject commit 1028ec347935a5f61925541d7adcf6b08aca820c
+Subproject commit 2a859fd75795cc428e911b59abf8404c87b530f4