SMP: hack-and-slash to bring BaseReg into scope

SMP: disable spark support (only a little bit of header file re-jigging is reqd to get it going again, I suspect.)

SMP: bunch of triv. changes to account for the fact that a Capability is no longer just a RegTable

Way 's': add -DSMP to HC_ and CC_OPTS

SMP: move link field from StgRegTable to Capability

make it compile when GHCI aint

Add special case for installing shared libs (which need the execute bit set).

- Implement an alternative :module syntax so we can play around with it.

- Implement ':show bindings' and ':show modules'

- Fix a bug whereby doing :info on a local binding would cause a panic
  (this needs to be merged to STABLE - the change is part of the patch
  to HscMain).

- Some cleanups in InteractiveUI.hs

Fix two problems with the ELF linker:

1.  Determine section attributes by examining various bits in the
    section header tables, rather than from the section names.  This
    makes it robust against future changes / additions to the set of
    section names.

2.  Handle local symbols differently.  Do not add them to our own
    local symbol table for this object, since that's

    (a) wrong -- multiple local symbols can have the same name so long
        as each is in a different section, so if we just dump them into
        the local symbol table we'll wind up with apparently duplicate
        symbols

    (b) totally unnecessary, since the relocations against local symbols
        simply specify an index into the ELF symbol table for the object,
        from whence the address can be calculated without reference to the
        name.

TODO: Test on sparc-solaris
      Investigate whether PEi386 linker needs fixing similarly
and then
MERGE TO STABLE

Revert to running command-line statements in the context of the
current thread, so that ^C exceptions get delivered to the right
place.

Now that a deadlock generates an exception this is not so bad, but it
would be nice to do it the "right" way so I've left the old code in a
comment for now.

More wibbles, sigh.  Must have been typing with my elbows when I made
that change.

CmRunDeadlocked no longer exists

Fix wibbles in previous commit.

Strip whitespace from the beginning of the line when looking for
OPTIONS pragmas.

Deadlock is now an exception instead of a return status from
rts_evalIO().

The current behaviour is as follows, and can be changed if necessary:
in the event of a deadlock, the top main thread is taken from the main
thread queue, and if it is blocked on an MVar or an Exception (for
throwTo), then it receives a Deadlock exception.  If it is blocked on
a BLACKHOLE, we instead send it the NonTermination exception.  Note
that only the main thread gets the exception: it is the responsibility
of the main thread to unblock other threads if necessary.

There's a slight difference in the SMP build: *all* the main threads
get an exception, because clearly none of them may make progress
(compared to the non-SMP situation, where all but the top main thread
are usually blocked).

Attempt to fix the problems with missing instances once more.

The current problem is that in the case where a ModDetails is being
constructed from its interface (in compilation manager modes) we
weren't getting any instances because the instances are gotten from
the [InstInfo] returned from tcInstDecls1, which only contains
*source* instance declarations.  Fix: return a list of DFuns defined
in the current module from tcInstDecls1, to be plugged into the
ModDetails later.

Also: revert the previous change to the isLocalThing predicate,
because now we really want to know which dfuns come from the current
module.  The comment about the iface_dfuns containing only package and
local instances is incorrect in batch-compile mode, because we also
demand-load stuff from home package interfaces, so I deleted this
comment and fixed up some of the other commentary.

Fix for a change in CPP's behaviour in gcc 2.96 relative to 2.95.
Unlit used to inject '# <line> <file>' at the beginning of the output
file, but in gcc 2.96 this is ignored.  Instead we have to inject
'#line <line> <file>', which in turn means that GHC's lexer has to
understand this kind of pragma in addition to the plain '#' form, in
the case when we aren't running CPP after unlitting.

Import wibbles

assume bash (and not ash) is used with mingw

multi-slurp protect

tcInstDecls1: partition up interface instances using isHomePackageThing rather than isLocalThing

added isHomePackageThing :: NamedThing a => a -> Bool

For AR and LD, transform "/cygdrive/<drive>/..." paths to "<drive>:\..." --
enables the use of mingw-based GNU Make.

bash behaviour re: quoting and backslashes has changed (win32), cope.

- removed KludgedSystem; no longer needed.
- be path separator savvy.

Added an intro to the workings of the desugarer and details about the pattern
matching compiler.

updates & fixes to hc-bootstrapping story; from Thomas Nordin

add HSstd{1,2}.o to INSTALL_LIBS (mingw only)

Better off if GhcBinDistShScripts is just empty on mingw plats

mingw only: associate FPish icon (nicked from Hugs) with
the GHCi wrapper app.

'std' now also needs user32 (under win32)

First cut at enhancing the facilities for manipulating the scope in
GHCi.  The scope now consists of

  1. the full top-level scope of zero or more interpreted modules
  2. the exports from zero or more modules
  3. the temporary bindings

The sets 1 & 2 are manipulated using an extended :m command: eg :m +A
will add module A to either set 1 or two depending on whether A is
interpreted, and :m -A will remove it.  The user interface may change,
pending feedback from the punters on the mailing list.

'Prelude' is automatically added to the scope if set 1 is empty and
set 2 doesn't already contain it.

We now cache the GlobalRdrEnv for the current scope between
evaluations in the InteractiveContext, and also the current
PrintUnqualified setting (which also depends on the scope).

Cvs: ----------------------------------------------------------------------

Back out previous fix, I've hacked it in a different place which is at
least closer to the source of the problem.

Don't add -package-name if $(PACKAGE) == "rts".  THis is a HACK and we
need to fix the mess in ghc/rts/Makefile properly.

Fix a problem which lead to home-package instances ending up in the
package instance table in GHCi, which results in strange duplicate
instance errors when reloading modules.  See the comments for details.

Make better use of the -M<size> setting under Win32. Use it to guide
the amount of VM to reserve -- the default is (still) 256M, but the
user will now have a way of overriding this setting.

Track PrimOp changes.

make -split-objs work again

adjust pointer to the RTS profiling options section

IS setup: remove HDirect com lib reference; no longer bundled