--- a/Makefile.pre.in
+++ b/Makefile.pre.in
@@ -1451,6 +1451,7 @@ libinstall:	build_all $(srcdir)/Modules/
 	$(INSTALL_DATA) `cat pybuilddir.txt`/_sysconfigdata_$(ABIFLAGS)_$(MACHDEP)_$(MULTIARCH).py \
 		$(DESTDIR)$(LIBDEST); \
 	$(INSTALL_DATA) $(srcdir)/LICENSE $(DESTDIR)$(LIBDEST)/LICENSE.txt
+ifeq (@COMPILE_ALL_TESTS@,yes)
 	if test -d $(DESTDIR)$(LIBDEST)/distutils/tests; then \
 		$(INSTALL_DATA) $(srcdir)/Modules/xxmodule.c \
 			$(DESTDIR)$(LIBDEST)/distutils/tests ; \
@@ -1486,6 +1487,7 @@ libinstall:	build_all $(srcdir)/Modules/
 		$(PYTHON_FOR_BUILD) -m lib2to3.pgen2.driver $(DESTDIR)$(LIBDEST)/lib2to3/Grammar.txt
 	-PYTHONPATH=$(DESTDIR)$(LIBDEST) $(RUNSHARED) \
 		$(PYTHON_FOR_BUILD) -m lib2to3.pgen2.driver $(DESTDIR)$(LIBDEST)/lib2to3/PatternGrammar.txt
+endif
 
 # bpo-21536: Misc/python-config.sh is generated in the build directory
 # from $(srcdir)Misc/python-config.sh.in.
