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  - tracing facilities are now enabled with -DTRACING, and -DDEBUG
    additionally enables debug-tracing.  -DEVENTLOG has been
    removed.

  - -debug now implies -eventlog

  - events can be printed to stderr instead of being sent to the
    binary .eventlog file by adding +RTS -v (which is implied by the
    +RTS -Dx options).

  - -Dx debug messages can be sent to the binary .eventlog file
    by adding +RTS -l.  This should help debugging by reducing
    the impact of debug tracing on execution time.

  - Various debug messages that duplicated the information in events
    have been removed.

The check for whether a Capability was free was inverted, which harmed
performance for callbacks.

Also add a panic for resurrecting a thread blocked on an exception,
since it should never happen.

Fixes an ASSERTION failure with concprog001, -threaded -debug, +RTS -N2

This has no effect with static libraries, but when the RTS is in a
shared library it does two things:

 - it prevents the function from being exposed by the shared library

 - internal calls to the function can use the faster non-PLT calls,
   because the function cannot be overriden at link time.

Should help to fix the build on OpenBSD (together with a corresponding
patch to libraries/base).

When there are some absolute include dirs, don't create arguments
like -Ilibraries/base//usr/local/include.

I need this fix for injecting the iconv include dir (which is
/usr/local/include on OpenBSD) into the build of libraries/base.

rolling back:

Mon Aug  3 11:44:13 BST 2009  Simon Marlow <marlowsd@gmail.com>
  UNDO: Add -r option to darcs-all, and remove push-all (#3375)
  Contributed by: seliopou@gmail.com
      
  This patch modifies darcs-all to have feature parity with push-all by
  recognizing two new options.
  
      * -i, equivalent to --ignore-failure in push-all
      * -r <repo>, specifies the remote repository darcs commands will use
  
  Some example commands:
  
  Get the libraries from a repository of your choosing. This is useful
  when working with a git mirror:
  
      $ ./darcs-all -r http://darcs.haskell.org get
  
  Pull changes. Used to be:
  
      $ ./push-all --pull http://darcs.haskell.org
  
  Is now:
  
      $ ./darcs-all -r http://darcs.haskell.org pull
  
  Or to use the default remote of the ghc repository:
  
      $ ./darcs-all pull

    M ./darcs-all -79 +33
    A ./push-all

We need to change a dependency on
    pkg-inplace
to
    pkg-$abihash
when installing

We were running into problems like:
    for f in  LICENSE configure config.sub config.guess [...]
    make[2]: execvp: /bin/sh: Argument list too long
This patch moves the loop into make, rather than the shell.

That is, unless we're printing in LeftMode, where we bypass encoding
for speed.  This is safe, because LeftMode is used for outputting C or
asm, where everyting is Z-encoded and hence ASCII.

Error messages and other compiler output containing Unicode will now
appear correctly according to the locale settings.

I've updated the wiki page about the RTS headers
  http://hackage.haskell.org/trac/ghc/wiki/Commentary/SourceTree/Includes
to reflect the new layout and explain some of the rationale.  All the
header files now point to this page.

See commentary at
http://hackage.haskell.org/trac/ghc/wiki/Commentary/Packages

This is just a tiny refactoring.  In general, we're trying to
get rid of parser errors in favour of later, more civlised, errors.

The issue here is this:

  type ItemColID a b = Int  -- Discards a,b

  get :: ItemColID a b -> a -> ItemColID a b
  get (x :: ItemColID a b) = x :: ItemColID a b

The pattern signature for 'x' doesn't actually rigidly bind a,b.
This crashed GHC 6.10 with a 'readFilledBox' panic.  Now we fail
with an erroe message

With the new outside-in algorithm we'll be able to accept this program.

  
This is needed both for per-session parallelism and for allowing
multiple concurrent sessions in the same process.  With the help of
atomicModifyIORef and unsafePerformIO it is also quite fast--an MVar
would most likely be slower.  On a full compilation of Cabal's head
branch it was about 1-2 percent slower, but then overall compilation
times varied by about 4 percent, so I think it's worth it.

For: FastStrings, Names, and Bin values.  This makes .hi files smaller
on 64-bit platforms, while also making the format a bit more robust.

We now have a dummy 32/64-bit field near the beginning of a .hi file
for backward-compatibility reasons; see comments (Note [dummy iface
field]) in BinIface.hs.

It breaks the unregisterised build on IA64.

Without this, concurrent updates to the EPS could introduce
overlapping instances (even though they came from the same module).

Somehow I'd forgotten to instantiate the coercion that is stored in a
'NewtypeDerived' constructor in an InstInfo.  The necessary code is
in TcInstDcls.tc_inst_decl2.

The result was ghc: panic! (the 'impossible' happened)
   (GHC version 6.10.3 for x86_64-unknown-linux):
   No match in record selector Var.tcTyVarDetails
because we were looking at an (uninstantiated) TyVar instead of
an (instantiated) TcTyVar.

Fixes linking with -dynamic

This fixes linking hello world with -dynamic. I've also added some more
variables, so there is less duplication between the different ways of
linking.

Also, -fPIC causes an error if the target is registerised and has no
native code generator.

This gives about a 15% performance boost in GHCi for me.  nice!