DigitalMars/optlink — pull request #10 by dawgfoto (2013-09-28 15:16:32+00:00)
Title: fix Issue 3956 - optlink keeps leading underscore of first export symbol

- The problem is that the output segment only gets set after
the symbol was exported. But the decision to tweak the export
name (strip leading '_') is made before that and rely on a
selected output format.

- Resolved by checking whether any output format is selected
and if not use ANY_USE32 which implies OUTPUT_PE.
This seems to rely on the fact that any other definition
(e.g. for '_TEXT') previously set ANY_USE32.
Another similar solution would be to call
SELECT_OUTPUT_SEGMENTED_OR_PE before DEFINE_EXPORT.
It relied on the same assumption about ANY_USE32 though.