--- ./src/backend/Makefile.orig	2022-02-07 23:15:36.000000000 +0200
+++ ./src/backend/Makefile	2022-02-23 20:23:06.868037000 +0200
@@ -116,6 +116,8 @@
 
 $(top_builddir)/src/port/libpgport_srv.a: | submake-libpgport
 
+symlinks: $(top_builddir)/src/include/parser/gram.h $(top_builddir)/src/include/storage/lwlocknames.h
+
 
 # The postgres.o target is needed by the rule in Makefile.global that
 # creates the exports file when MAKE_EXPORTS = true.