Make's MAKEFLAGS variable is set to a string containing the single-letter
arguments to Make. This means there are no hyphens. Fix the '-s' check to
silence distutils to now work.
diff --git a/Makefile.pre.in b/Makefile.pre.in
index a56c91c..ede3bd8 100644
--- a/Makefile.pre.in
+++ b/Makefile.pre.in
@@ -358,7 +358,7 @@
# Build the shared modules
sharedmods: $(BUILDPYTHON)
@case $$MAKEFLAGS in \
- *-s*) $(RUNSHARED) CC='$(CC)' LDSHARED='$(BLDSHARED)' OPT='$(OPT)' ./$(BUILDPYTHON) -E $(srcdir)/setup.py -q build;; \
+ *s*) $(RUNSHARED) CC='$(CC)' LDSHARED='$(BLDSHARED)' OPT='$(OPT)' ./$(BUILDPYTHON) -E $(srcdir)/setup.py -q build;; \
*) $(RUNSHARED) CC='$(CC)' LDSHARED='$(BLDSHARED)' OPT='$(OPT)' ./$(BUILDPYTHON) -E $(srcdir)/setup.py build;; \
esac