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HEADS UP!  You now need to use an up to date Happy from CVS to build
GHC.  Happy version 1.15 will be released shortly.

Replace the slow hacked up String-based GetImports with one based on
the real Haskell parser.  This requires a new addition to Happy to
support parsing partial files.  We now avoid reading each source file
off the disk twice: once to get its module name and imports, and again
to parse it.  Instead we just slurp it once, and cache the StringBuffer.

This should result in improved startup times for ghc --make,
especially when there are lots of source files.

Add mk/fptools.css to $(SRC_DIST_FILES)

hGetStringBuffer: hClose the file after we've read it (duh).  This
causes a real problem on Windows, where the file remains locked in
GHCi, and cannot be modified until after the finalizer has closed it
(bug #1047408).

retire $(compiling_with_4xx): we don't support compiling with 4.x any more

Dynamic Linking, Part 2:

Hack the Makefiles to build dynamic libraries.
This allows you to actually use dynamic libraries to greatly reduce binary
sizes on Darwin/PowerPC and on powerpc64-linux (for now).

To use this, add the following to your build.mk

SplitObjs=NO
GhcBuildDylibs=YES
GhcStage2HcOpts=-dynamic
GhcLibHcOpts+=-fPIC -dynamic
GhcRtsHcOpts+=-fPIC -dynamic
GHC_CC_OPTS+=-fPIC

(You can leave out the last three lines on powerpc64-linux).

Then, to compile a program using dynamic libraries, pass the -dynamic option to GHC.
To make GHCi use the dynamic libraries instead of .o files, just delete the HS*.o files.

The dynamic library files are named libHSfoo_dyn.dylib or libHSfoo_dyn.so.

Note that the dynamic and static libraries are build from the same .o files,
but we really want to build the static libraries with SplitObjs and without
-fPIC -dynamic to achieve better code size and performance.

ghc/compiler/ghci/Linker.lhs:
    When looking for a library, look for HSfoo.o first (as before),
    then look for libHSfoo_dyn.[so/dylib] before looking for
    libHSfoo.[so/dylib].

ghc/compiler/main/DriverPipeline.hs:
    Main.dll_o and PrelMain.dll_o are dead, at least for now.

ghc/compiler/main/Packages.lhs:
    When -dynamic is specified, add "_dyn" to all libraries specified in
    hs-libraries (not to the extra-libs).

ghc/lib/compat/Makefile:
    Never build libghccompat as a dynamic lib.

mk/package.mk:
    if GhcBuildDylibs is set to YES, build dynamic libraries.

mk/target.mk:
    When installing .dylibs (Darwin only), update the install_name to point
    to the final location.
    (Somebody please read Apple's documentation on what install_names are,
    and then comment on whether this is a useful feature or whether it should
    be done the "normal" unix way).

Small optimisation: allow lookForInline to skip over CmmNop too

default STOLEN_X86_REGS to 4 (workaround because GHC doesn't normally
define STOLEN_X86_REGS when compiling plan .c source)

Fix up STM when compiling unregisterised.  There were a few wibbles
with the stack layout.

Instead of defining NO_REGS when IN_STG_CODE==0, define
NO_GLOBAL_REG_DECLS instead.

This means that in non-STG code we can still get at the values of
REG_R1 & co., even though the global register decls are turned off.
This is necessary because we sometimes need to set up different stack
layouts depending on REG_R1.

Make it so that global register declarations are turned off if
NO_GLOBAL_REG_DECLS is defined.

Improve a comment

slight simplification

Fix the unreg test in the rule for building AutoApply$(_way).cmm

Add way debug_u

Fix bug(s) in the register allocator: if a virtual register is both in
memory and in a register (perhaps because it was recently loaded from
a spill slot), and the current instruction writes it, we're supposed
to invalidate the memory slot.  That wasn't happening properly.

This fixes two problems noticed when using -prof -fasm: 10queens in the
testsuite gives the wrong answer, and nofib/spectral/hartel/ida fails
with a 'head []' message.  Interesting bug to track down!

-package Cabal is required whenever $(bootstrapped) is yes, not only
for bootstrapped compiles with GHCi.

Fix a bug in mk_switch.

Track removal of Distribution.Compat.Error

Track removal of Distribution.Compat.Error.

Restore splitting at ':' for the -i option, which I broke recently.

Yet another STM fix: don't attempt to kick any threads which are ThreadRelocated.

fix System.IO.Error breakage

Numerous bug fixes to the STM code, mostly from a debugging session
with Tim Harris.  The test that flushed out all the bugs will shortly
be added to the test suite.

Issue an error when the stdcall calling convention is requested on
non-x86 platforms.

import System.IO.Error

Move _srtd and _closure_tbl to read-only data instead of text
(these things contain pointers to other symbols, so they can't go into
.text for position-independent code).

PowerPC Linux: Fix a slight ABI bug in genCCall
Double and I64 arguments on the stack were not properly aligned.

Cleanup and additional comments for the Mac OS/AIX/powerpc64-linux adjustor
code.

ignore OPTIONS_anything_else when looking for OPTIONS_GHC/OPTIONS pragmas.

Rename OPTIONS to OPTIONS_GHC.

Make GHC accept OPTIONS_GHC.  OPTIONS is also accepted, for now.

fix for parsing OPTIONS pragmas: OPTIONS should be followed by a
non-identifier character.

wibble: got my endifs mixed up

When way=u, turn off split objects by setting SplitObjs=NO, rather
than testing for way=u directly.  Fixes a build wibble.

Fix $(StripLibraries) code after ld changes yesterday.

Support foreign import "wrapper" with > 6 arguments on PowerPC Linux (32-bit).
This calling convention looks deceptively simple at first, but it turns out
to be hideously complex...

createDirectoryIfMissing is added to Compat.Directory and is used in ghc-pkg.
The mingw32_HOST_OS is replaced with mingw32_TARGET_OS. I don't know why but
prior the last commit the tool was working with mingw32_HOST_OS fine but not
it isn't. Maybe I miss something. Simon, could you check whether the patch is
fine?

Fix for AIX-like ABIs.

Refactored and cleaned up ld-related tests. Only tested mildly under Linux.

Handle foreign import wrapper properly for MacOS X, powerpc64-linux and AIX.
Only Mac OS X tested so far.
Pass information about argument types from DsForeign to createAdjustor encoded
as a string ('i' for integers, 'f' for floats, 'd' for doubles and 'l' for
long [64bit] integers).