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Expose Win32 console event handling to the user.

Added RTS support for registering and delivering console events quite
a while ago (rts/win32/ConsoleHandler.c), but got bored with it before
completing the job. Here's the concluding commit; it does the following:

- new module, base/GHC/ConsoleHandler.hs which supports registering of
  console event handlers (the null module on plats other than mingw).
- special handling of aborted async read()s on 'standard input' in
  rts/win32/IOManager.c (together with GHC.Conc.asyncRead). See comments
  in that IOManager.c as to why this is needed.
  [ Any other code that performs blocking I/O on 'standard input' will
    need to be tweaked too to be console event handler/signal friendly.]
- for now, disable the delivery of 'close' events (see
  rts/win32/ConsoleHandler.c:generic_handler() for reasons why)

Feel free to hoik GHC/ConsoleHandler.hs around the lib hierarchy to wherever
is considered more fitting. Unifying functionality between System.Posix.Signals
and GHC.ConsoleHandler is one (obvious) thing to do.

-- Demonstrating GHC.ConsoleHandler use; win32 only
module Main(main) where

import GHC.ConsoleHandler
import System.IO  (hFlush, stdout)
import GHC.Conc   (threadDelay)

main :: IO ()
main = do
  installHandler (Catch (\ _ -> putStrLn "Caught console event; ignoring" >> hFlush stdout))
  loop
 where
  loop = do
    threadDelay 100000
    ls <- getLine
    putStrLn ls
    loop
--

Needed to include a header file in Compat/Directory on windows

Fix build with GHC 6.2.x

Quick Start section: add disclaimer for Windows builders

Need to add System to ALL_DIRS

Use findExecutable from Compat.Directory instead of its own findBinary.
Now the tool works under Windows as well as under Linux.
With cygwin we can use #!runghc ...

* Add stub for System.FilePath
* Add findExecutable & copyFile to Compat.Directory

Mac OS X: Track Cabal-related changes (extra_frameworks -> extraFrameworks)

Fixed DocBook XML once again. Perhaps I should add a "make validate"
CVS hook, hmmm... >:-)

we need -package Cabal for stage2

Fix build

Add Haskell 98 isAlpha divergence

darwin-only fix

Fix previous commit:
Don't handle Solaris2-flag _POSIX_PTHREAD_SEMANTICS in configure at all
but simply #ifdef solaris2_TARGET_OS #define ... it in the header-file.

Windows fix (include config.h)

Update to new InstalledPackageInfo

build fix for Windows

add bits required for Compat.Directory on Windows

Push FreeBSD-unicode-detection into package

Push some unixisms from toplvl into package:
usleep, SunOS-handling, getpw*

drop win32 protos, current windows.h's now provide 'em.

Restore compatibility with GHC 6.2

add missing file

Update comment

---------------------------------
     Buglet in the handling of unlifted bindings
	---------------------------------

Unlifted bindings, like
	let I# v = ... in ...
can't be generalised.  In teh transition to GADTs I introduced a bug
that accidentally discarded some necessary dictionary bindings.

This commit fixes it by moving the test for unlifted bindings to a
much earlier point in tcBindWithSigs, which seems a lot cleaner to me.

'make depend' fix

Compiler changes for the new package.conf format.

The new ghc-pkg tool.

So far, the new syntax is supported, and the format of the package
definitions has changed to InstalledPackageInfo rather than the old
PackageConfig type.  The format of the package.conf file is now
[InstalledPackageInfo] (using show/read).

We still support the old ghc-pkg command line syntax, and the old
PackageConfig syntax for package definitions.  These are deprecated
features, of course.

Not much is done with the list of exposed/hidden modules, or versions
(yet).

Add a more prominent description of what this library is all about.

Compile fixes

Get rawSystem from Compat.RawSystem in libghccompat.

- include cbits dir
- omit certain libraries when ghc > 6.2
- build this library at boot-time, because it will be needed by ghc-pkg

include lib/ in the build

Add directories for ghc/lib & ghc/lib/compat

Wibble

Use rawSystem from libghccompat.a

Move the compatibility code for rawSystem from libraries/base into
ghc/lib/compat.

64-bit fix:
Change the type of context_switch from 'nat' to 'int'.
It's accessed as CInt from cmm code, and sizeof(nat) > sizeof(int)
on many 64-bit platforms.

Add support for powerpc64-linux and probably powerpc64-AIX.

Add powerpc64-unknown-linux