[Bug other/39888] TLS emutls not linked to automatically on Darwin

["developer at sandoe-acoustics dot co dot uk" <gcc-bugzilla at gcc dot gnu dot org>]

------- Comment #14 from developer at sandoe-acoustics dot co dot uk  2009-09-23 16:36 -------
(In reply to comment #12)
> However your current
> approach isn't scalable (which was Mike's complaint). 

anything that requires an action per added function is "non-scalable" in that
way.
the only action needed for the _ext is to list the function in
gcc/config/darwin-libgcc-ext-32B-10.X.ver and friends.
(OK there's an addition for each darwin release where the content of libgcc_s
changes  - but there would be a change to add a new macro for the other
mechanism)

the effort required of wrapping the function exports in a #define
NOT_HERE_BEFORE_10_X macro is probably typographically similar .. but more
intrusive in the source code.

However, I don't claim to understand the full range of options available from
ld; So (after putting out the current fire) I'd like to take a look at that
(anyone else welcome to do it first ;))

Apropos "extra compile flags" this was only to hide the new feature behind
something for test purposes -- clearly if the process were adopted the flag
would not be needed.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39888