diff --git a/src/backend/Makefile b/src/backend/Makefile
index 7e67bd3adf2..45e275e57d9 100644
--- a/src/backend/Makefile
+++ b/src/backend/Makefile
@@ -183,6 +183,7 @@ 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
@@ -201,6 +202,7 @@ endif
 endif
 ifeq ($(MAKE_EXPORTS), true)
 	$(mkinstalldirs) '$(DESTDIR)$(pkglibdir)'
+	$(mkinstalldirs) '$(DESTDIR)$(pgxsdir)/$(MKLDEXPORT_DIR)'
 endif
 
 
@@ -210,6 +212,7 @@ 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 8a789352b63..4e48ac3797f 100644
--- a/src/makefiles/Makefile.aix
+++ b/src/makefiles/Makefile.aix
@@ -30,12 +30,13 @@ IMPSUFF= .imp
 POSTGRES_IMP= postgres$(IMPSUFF)
 
 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
 
 %$(EXPSUFF): %.o
 	$(MKLDEXPORT) $*.o > $*$(EXPSUFF)