Add some commentary on -mimpure-text.
diff --git a/setup.py b/setup.py
index 1ee370a..5d71181 100644
--- a/setup.py
+++ b/setup.py
@@ -1369,6 +1369,14 @@
## extra_link_args.extend(['-read_only_relocs', 'warning'])
elif sys.platform == 'sunos5':
+ # XXX This shouldn't be necessary; it appears that some
+ # of the assembler code is non-PIC (i.e. it has relocations
+ # when it shouldn't. The proper fix would be to rewrite
+ # the assembler code to be PIC.
+ # This only works with GCC; the Sun compiler likely refuses
+ # this option. If you want to compile ctypes with the Sun
+ # compiler, please research a proper solution, instead of
+ # finding some -z option for the Sun compiler.
extra_link_args.append('-mimpure-text')
ext = Extension('_ctypes',