# HG changeset patch
# Parent 93a86a021b68dc896e50d5b25b058c0ecc962bfc
Issue #12141: Install a copy of template C module file so that
test_build_ext of test_packaging and test_distutils can be
run outside of a build directory.

diff --git a/Lib/distutils/tests/test_build_ext.py b/Lib/distutils/tests/test_build_ext.py
--- a/Lib/distutils/tests/test_build_ext.py
+++ b/Lib/distutils/tests/test_build_ext.py
@@ -22,6 +22,11 @@
 ALREADY_TESTED = False
 
 def _get_source_filename():
+    # use installed copy if available
+    tests_f = os.path.join(os.path.dirname(__file__), 'xxmodule.c')
+    if os.path.exists(tests_f):
+        return tests_f
+    # otherwise try using copy from build directory
     srcdir = sysconfig.get_config_var('srcdir')
     return os.path.join(srcdir, 'Modules', 'xxmodule.c')
 
diff --git a/Makefile.pre.in b/Makefile.pre.in
--- a/Makefile.pre.in
+++ b/Makefile.pre.in
@@ -928,7 +928,7 @@
 		multiprocessing multiprocessing/dummy \
 		unittest unittest/test \
 		curses pydoc_data $(MACHDEPS)
-libinstall:	build_all $(srcdir)/Lib/$(PLATDIR)
+libinstall:	build_all $(srcdir)/Lib/$(PLATDIR) $(srcdir)/Modules/xxmodule.c
 	@for i in $(SCRIPTDIR) $(LIBDEST); \
 	do \
 		if test ! -d $(DESTDIR)$$i; then \
@@ -984,6 +984,10 @@
 		done; \
 	done
 	$(INSTALL_DATA) $(srcdir)/LICENSE $(DESTDIR)$(LIBDEST)/LICENSE.txt
+	if test -d $(DESTDIR)$(LIBDEST)/distutils/tests; then \
+		$(INSTALL_DATA) $(srcdir)/Modules/xxmodule.c \
+			$(DESTDIR)$(LIBDEST)/distutils/tests ; \
+	fi
 	-PYTHONPATH=$(DESTDIR)$(LIBDEST)  $(RUNSHARED) \
 		./$(BUILDPYTHON) -Wi $(DESTDIR)$(LIBDEST)/compileall.py \
 		-d $(LIBDEST) -f \