Final fix for #1403
The Windows installer and some Linux distros are using compileall to compile all py files in the Lib/ directory. However no test exists to check if all py files can be compiled. I figured out that make testall is the easiest way to test compileall.
diff --git a/Makefile.pre.in b/Makefile.pre.in
index aac765b..70e5b0e 100644
--- a/Makefile.pre.in
+++ b/Makefile.pre.in
@@ -592,6 +592,8 @@
testall: all platform
-find $(srcdir)/Lib -name '*.py[co]' -print | xargs rm -f
+ $(TESTPYTHON) Lib/compileall.py
+ -find $(srcdir)/Lib -name '*.py[co]' -print | xargs rm -f
-$(TESTPYTHON) $(TESTPROG) $(TESTOPTS) -uall
$(TESTPYTHON) $(TESTPROG) $(TESTOPTS) -uall