link libatomic if we're targeting 486
link libatomic.a if we're targeting windows
idk what the hell MSVC does for -arch:IA32
we already set the c++14 flag early on
strip target selection flags from MSVC builds and clang-cl
c++14 does not propagate to compile tests
lto stuff remains for now
since native builds work
(cherry picked from commit 37814472af5e7c35d514bae16d19b08050765d52)
i'm not porting the UNIX-tier cppfs thing
(cherry picked from commit d6edbd789534d4fd0bce6c8c2418347cd80bebdb)
none of this had to be specified directly ffs
(cherry picked from commit 5dbefa7131a6fe0b2006c90ecdba7e466fdd1ecc)
stop breaking shit reee
(cherry picked from commit 14be89902ccc75a7fc21863593da393ca976d0d4)
