xhyve @20180530: Undefined symbols _deflate _crc32 _deflateEnd _deflateInit_

[ryandesign (Ryan Carsten Schmidt)]

xhyve @20180530 fails to build on OS X ​Yosemite and ​El Capitan:

undef: _deflate
undef: _crc32
undef: _deflateEnd
undef: _deflateInit_
Undefined symbols for architecture x86_64:
  "_deflate", referenced from:
      _rfb_send_screen in xhyve_lto.o
      _rfb_send_all in xhyve_lto.o
  "_crc32", referenced from:
      _rfb_send_screen in xhyve_lto.o
  "_deflateEnd", referenced from:
      _rfb_thr in xhyve_lto.o
      _rfb_send_screen in xhyve_lto.o
      _rfb_send_all in xhyve_lto.o
  "_deflateInit_", referenced from:
      _rfb_thr in xhyve_lto.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

** BUILD FAILED **

[catap (Kirill A. Korinsky)]

In 8ef7d36c054b1bc65fb2ae1a516c411e124ab97c/macports-ports (master):

xhyve: add missed dependencies

xhyve is linked to zlib. Usually it is installed as side effect from
another dependencies but it isn't trur for 10.11 and 10.10 builds. This
builds are failed on linking phase
`
Undefined symbols for architecture x86_64:

"_deflate", referenced from:

_rfb_send_screen in xhyve_lto.o
_rfb_send_all in xhyve_lto.o

"_crc32", referenced from:

_rfb_send_screen in xhyve_lto.o

"_deflateEnd", referenced from:

_rfb_thr in xhyve_lto.o
_rfb_send_screen in xhyve_lto.o
_rfb_send_all in xhyve_lto.o

"_deflateInit_", referenced from:

_rfb_thr in xhyve_lto.o

ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
`

Closes: #57292

[catap (Kirill A. Korinsky)]

In d55db42123d32cbad819206dd2e07a50afa07a74/macports-ports (master):

xhyve: add zlib inside xcode project

Closes: #57292