<div dir="ltr"><div>The "atomic-primops" library depends on symbols such as store_load_barrier and "cas", which are defined in SMP.h. Thus the result is that if the program is linked WITHOUT "-threaded", the user gets a linker error about undefined symbols.</div>
<div><br></div><div>The specific place it's used is in the 'foreign "C"' bits of this .cmm code:</div><div><br></div><div> <a href="https://github.com/rrnewton/haskell-lockfree-queue/blob/87e63b21b2a6c375e93c30b98c28c1d04f88781c/AtomicPrimops/cbits/primops.cmm">https://github.com/rrnewton/haskell-lockfree-queue/blob/87e63b21b2a6c375e93c30b98c28c1d04f88781c/AtomicPrimops/cbits/primops.cmm</a><br>
</div><div><br></div><div>I'm trying to explore hacks that will enable me to pull in those functions during compile time, without duplicating a whole bunch of code from the RTS. But it's a fragile business.</div>
<div><br></div><div>It seems to me that some of these routines have general utility. In future versions of GHC, could we consider linking in those routines irrespective of "-threaded"?</div><div><br></div><div>
-Ryan</div><div><br></div></div>