WIP/Foundation: port to Windows

Unformalised changes to port Foundation to Windows

Author: compnerd

CMakeLists.txt

@@ -110,6 +110,7 @@ elseif(CMAKE_SYSTEM_NAME STREQUAL FreeBSD)
   set(Foundation_rpath_flags -Xlinker;-rpath;-Xlinker;"\\\$\$ORIGIN")
 elseif(CMAKE_SYSTEM_NAME STREQUAL Windows)
   set(deployment_target -DDEPLOYMENT_TARGET_WINDOWS)
+  set(CoreFoundation_INTERFACE_LIBRARIES -lWS2_32 -lUser32 -lmsvcrt -ladvapi32 -lshell32 -lrpcrt4 -lsecur32 -lPathcch -lOle32 -lCrypt32 -lwldap32 -lNormaliz)
 endif()
 
 add_swift_library(Foundation
@@ -297,13 +298,15 @@ add_swift_library(Foundation
                     -L${CMAKE_CURRENT_BINARY_DIR}
                     -luuid
                     ${Foundation_rpath_flags}
+                    ${CoreFoundation_INTERFACE_LIBRARIES}
                   SWIFT_FLAGS
                     -DDEPLOYMENT_RUNTIME_SWIFT
                     ${deployment_enable_libdispatch}
                     -I;${ICU_INCLUDE_DIR}
                     ${libdispatch_cflags}
                     ${swift_enable_testing}
                     ${swift_optimization_flags}
+                    -Xcc -D_DLL
                   DEPENDS
                     CoreFoundation)
 

CoreFoundation/CMakeLists.txt

@@ -353,6 +353,12 @@ if(CF_DEPLOYMENT_SWIFT)
   target_compile_definitions(CoreFoundation
                              PRIVATE
                                -DDEPLOYMENT_RUNTIME_SWIFT)
+  if(CMAKE_SYSTEM_NAME STREQUAL Windows)
+    target_compile_definitions(CoreFoundation
+                               PRIVATE
+                                 -D_DLL
+                                 -DCURL_STATICLIB)
+  endif()
 else()
   target_compile_definitions(CoreFoundation
                              PRIVATE

Foundation/Data.swift

@@ -12,7 +12,7 @@
 
 #if DEPLOYMENT_RUNTIME_SWIFT
 
-#if os(Linux)
+#if os(Linux) || os(Windows)
 @inlinable // This is @inlinable as trivially computable.
 internal func malloc_good_size(_ size: Int) -> Int {
     return size
@@ -22,7 +22,11 @@ internal func malloc_good_size(_ size: Int) -> Int {
 import CoreFoundation
 
 internal func __NSDataInvokeDeallocatorUnmap(_ mem: UnsafeMutableRawPointer, _ length: Int) {
+#if os(Windows)
+  UnmapViewOfFile(mem)
+#else
     munmap(mem, length)
+#endif
 }
 
 internal func __NSDataInvokeDeallocatorFree(_ mem: UnsafeMutableRawPointer, _ length: Int) {