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Platform: port to msvcrt, add msvcrt module

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This adds the swiftMSVCRT module which is similar in spirit to swiftGlibc and
swiftDarwin, exposing the Microsoft C Runtime library to swift.  Furthermore,
disable pieces of the standard library which are not immediately trivially
portable to Windows.  A lot of this functionality can still be implemented and
exposed to the user, however, this is the quickest means to a PoC for native
windows support.

As a temporary solution, add a -DCYGWIN flag to indicate that we are building
for the cygwin windows target.  This allows us to continue supporting the cygwin
environment whilst making the windows port work natively against the windows
environment (msvc).  Eventually, that will hopefully be replaced with an
environment check in swift.
This commit is contained in:
Saleem Abdulrasool
2016-07-03 14:43:06 -07:00
parent d39ad943d4
commit a05fd17b64
11 changed files with 301 additions and 19 deletions
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4
stdlib/private/SwiftPrivateLibcExtras/SwiftPrivateLibcExtras.swift
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@@ -17,6 +17,7 @@ import Darwin
import Glibc
#endif
#if !os(Windows) || CYGWIN
public func _stdlib_mkstemps(_ template: inout String, _ suffixlen: CInt) -> CInt {
#if os(Android)
preconditionFailure("mkstemps doesn't work on Android")
@@ -32,6 +33,7 @@ public func _stdlib_mkstemps(_ template: inout String, _ suffixlen: CInt) -> CIn
return fd
#endif
}
#endif
public var _stdlib_FD_SETSIZE: CInt {
return 1024
@@ -81,6 +83,7 @@ public struct _stdlib_fd_set {
}
}
#if !os(Windows) || CYGWIN
public func _stdlib_select(
_ readfds: inout _stdlib_fd_set, _ writefds: inout _stdlib_fd_set,
_ errorfds: inout _stdlib_fd_set, _ timeout: UnsafeMutablePointer<timeval>?
@@ -104,6 +107,7 @@ public func _stdlib_select(
}
}
}
#endif
//
// Functions missing in `Darwin` module.