diff --git a/ChangeLog b/ChangeLog
index 032f7fc..be963d6 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2019-07-05  Bruno Haible  <bruno@clisp.org>
+
+	Don't export the symbol 'aliases_lookup' on non-ELF platforms.
+	* Makefile.devel (lib/aliases.h, lib/aliases_sysaix.h,
+	lib/aliases_syshpux.h, lib/aliases_sysosf1.h, lib/aliases_syssolaris.h):
+	Add a 'static' keyword in front of the declaration of aliases_lookup.
+
 2019-07-02  Bruno Haible  <bruno@clisp.org>
 
 	Update to current gnulib.
diff --git a/Makefile.devel b/Makefile.devel
index 1f5ee16..dfdcbdd 100644
--- a/Makefile.devel
+++ b/Makefile.devel
@@ -121,7 +121,7 @@
 	./genaliases lib/aliases.gperf canonical.sh canonical_local.sh
 	$(RM) genaliases
 	$(GPERF) -m 10 lib/aliases.gperf > tmp.h
-	$(CP) tmp.h lib/aliases.h
+	sed -e 's/^\(const struct alias \)/static \1/' < tmp.h > lib/aliases.h
 	sh canonical.sh > lib/canonical.h
 	sh canonical_local.sh > lib/canonical_local.h
 	$(RM) tmp.h canonical.sh canonical_local.sh
@@ -131,7 +131,7 @@
 	./genaliases lib/aliases_sysaix.gperf canonical.sh canonical_local.sh
 	$(RM) genaliases
 	$(GPERF) -m 10 lib/aliases_sysaix.gperf > tmp.h
-	$(CP) tmp.h lib/aliases_sysaix.h
+	sed -e 's/^\(const struct alias \)/static \1/' < tmp.h > lib/aliases_sysaix.h
 	sh canonical.sh > lib/canonical_sysaix.h
 	sh canonical_local.sh > lib/canonical_local_sysaix.h
 	$(RM) tmp.h canonical.sh canonical_local.sh
@@ -141,7 +141,7 @@
 	./genaliases lib/aliases_syshpux.gperf canonical.sh canonical_local.sh
 	$(RM) genaliases
 	$(GPERF) -m 10 lib/aliases_syshpux.gperf > tmp.h
-	$(CP) tmp.h lib/aliases_syshpux.h
+	sed -e 's/^\(const struct alias \)/static \1/' < tmp.h > lib/aliases_syshpux.h
 	sh canonical.sh > lib/canonical_syshpux.h
 	sh canonical_local.sh > lib/canonical_local_syshpux.h
 	$(RM) tmp.h canonical.sh canonical_local.sh
@@ -151,7 +151,7 @@
 	./genaliases lib/aliases_sysosf1.gperf canonical.sh canonical_local.sh
 	$(RM) genaliases
 	$(GPERF) -m 10 lib/aliases_sysosf1.gperf > tmp.h
-	$(CP) tmp.h lib/aliases_sysosf1.h
+	sed -e 's/^\(const struct alias \)/static \1/' < tmp.h > lib/aliases_sysosf1.h
 	sh canonical.sh > lib/canonical_sysosf1.h
 	sh canonical_local.sh > lib/canonical_local_sysosf1.h
 	$(RM) tmp.h canonical.sh canonical_local.sh
@@ -161,7 +161,7 @@
 	./genaliases lib/aliases_syssolaris.gperf canonical.sh canonical_local.sh
 	$(RM) genaliases
 	$(GPERF) -m 10 lib/aliases_syssolaris.gperf > tmp.h
-	$(CP) tmp.h lib/aliases_syssolaris.h
+	sed -e 's/^\(const struct alias \)/static \1/' < tmp.h > lib/aliases_syssolaris.h
 	sh canonical.sh > lib/canonical_syssolaris.h
 	sh canonical_local.sh > lib/canonical_local_syssolaris.h
 	$(RM) tmp.h canonical.sh canonical_local.sh