build: disable zlib by default on Windows
authorSaleem Abdulrasool <compnerd@compnerd.org>
Thu, 2 Jan 2020 20:55:01 +0000 (12:55 -0800)
committerSaleem Abdulrasool <compnerd@compnerd.org>
Thu, 2 Jan 2020 20:55:52 +0000 (12:55 -0800)
commita2ca1c2d5668683b9a43cddf89131cc106591ee0
tree945aca4186de41ccf18da0904400d66884915b31
parent8f1caf518f374b452fdff22dcd56bcc12c900338
build: disable zlib by default on Windows

zlib usage on Windows has caused issues in the past.  Furthermore, the
GNUWin32 library can be detected and used although the headers are not
available.  Require Windows to explicitly opt in.
llvm/CMakeLists.txt