diff --git a/src/backend/Makefile b/src/backend/Makefile
index a11b2b503cf..b31eb8cfe1f 100644
--- a/src/backend/Makefile
+++ b/src/backend/Makefile
@@ -219,6 +219,7 @@ else
 endif
 ifeq ($(MAKE_EXPORTS), true)
 	$(INSTALL_DATA) $(POSTGRES_IMP) '$(DESTDIR)$(pkglibdir)/$(POSTGRES_IMP)'
+	$(INSTALL_PROGRAM) $(MKLDEXPORT) '$(DESTDIR)$(pgxsdir)/$(MKLDEXPORT_DIR)/mkldexport.sh'
 endif
 
 .PHONY: install-bin
@@ -237,6 +238,7 @@ endif
 endif
 ifeq ($(MAKE_EXPORTS), true)
 	$(MKDIR_P) '$(DESTDIR)$(pkglibdir)'
+	$(MKDIR_P) '$(DESTDIR)$(pgxsdir)/$(MKLDEXPORT_DIR)'
 endif
 
 
@@ -246,6 +248,7 @@ uninstall:
 	rm -f '$(DESTDIR)$(bindir)/postgres$(X)' '$(DESTDIR)$(bindir)/postmaster'
 ifeq ($(MAKE_EXPORTS), true)
 	rm -f '$(DESTDIR)$(pkglibdir)/$(POSTGRES_IMP)'
+	rm -f '$(DESTDIR)$(pgxsdir)/$(MKLDEXPORT_DIR)/mkldexport.sh'
 endif
 ifeq ($(PORTNAME), cygwin)
 ifeq ($(MAKE_DLL), true)
diff --git a/src/makefiles/Makefile.aix b/src/makefiles/Makefile.aix
index 7bf62ae2e8a..ef23a0008e0 100644
--- a/src/makefiles/Makefile.aix
+++ b/src/makefiles/Makefile.aix
@@ -27,12 +27,13 @@ endif
 POSTGRES_IMP= postgres.imp
 
 ifdef PGXS
-BE_DLLLIBS= -Wl,-bI:$(bindir)/postgres/$(POSTGRES_IMP)
+BE_DLLLIBS= -Wl,-bI:$(pkglibdir)/$(POSTGRES_IMP)
 else
 BE_DLLLIBS= -Wl,-bI:$(top_builddir)/src/backend/$(POSTGRES_IMP)
 endif
 
-MKLDEXPORT=$(top_srcdir)/src/backend/port/aix/mkldexport.sh
+MKLDEXPORT_DIR=src/backend/port/aix
+MKLDEXPORT=$(top_srcdir)/$(MKLDEXPORT_DIR)/mkldexport.sh
 
 %.exp: %.o
 	$(MKLDEXPORT) $^ >$@