FIx windows wheel build

[dkropachev]

Currently windows wheels are failing by following reasons:

1. Libev is not linked properly

  libevwrapper.obj : error LNK2001: unresolved external symbol _ev_io_stop
  libevwrapper.obj : error LNK2001: unresolved external symbol _ev_prepare_start
  libevwrapper.obj : error LNK2001: unresolved external symbol _ev_io_start
  libevwrapper.obj : error LNK2001: unresolved external symbol _ev_loop_destroy
  libevwrapper.obj : error LNK2001: unresolved external symbol _ev_loop_new
  libevwrapper.obj : error LNK2001: unresolved external symbol _ev_timer_again
  libevwrapper.obj : error LNK2001: unresolved external symbol _ev_run
  libevwrapper.obj : error LNK2001: unresolved external symbol _ev_async_start
  libevwrapper.obj : error LNK2001: unresolved external symbol _ev_prepare_stop
  libevwrapper.obj : error LNK2001: unresolved external symbol _ev_async_send
  libevwrapper.obj : error LNK2001: unresolved external symbol _ev_unref
  libevwrapper.obj : error LNK2001: unresolved external symbol _ev_timer_stop
  build\lib.win32-cpython-39\cassandra\io\libevwrapper.cp39-win32.pyd : fatal error LNK1120: 12 unresolved externals

Solution

Find a way to link or install it properly.

2. MSVC does not know what '__uint128_t is:

  cassandra\c_shard_info.c(3083): error C2065: '__uint128_t': undeclared identifier
  cassandra\c_shard_info.c(3083): error C2146: syntax error: missing ')' before identifier '__pyx_v_biased_token'
  cassandra\c_shard_info.c(3083): error C2059: syntax error: ')'
  cassandra\c_shard_info.c(3083): error C2059: syntax error: ')'
  cassandra\c_shard_info.c(3083): error C2059: syntax error: ')'

Solution 1

Probably we could code to work wihtout '__uint128_t: https://github.com/scylladb/python-driver/blob/ea8afecf032c8bf4292bf7b35831493e270f74a8/cassandra/c_shard_info.pyx#L39-L43

Solution 2

Switch to clang, which does support this type. Nor setuptool neither distool support clang out of box and making it work will require lot's of magic hacks.