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We now define _PROGNAME, and _PROG is automatically defined with
$(exeext). This will shortly automatically use the right exeext
depending on what stage it is being compiled with (exeext may be
different for different stages when cross-compiling).
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and use them for split
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It doesn't seem to do anything that _INSTALL and _INSTALL_INPLACE
can't do.
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hppa1, m68k
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We now regenerate them when installing, which means the path for perl
doesn't get baked in
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# -----------------------------------------------------------------------------
#
# (c) 2009 The University of Glasgow
#
# This file is part of the GHC build system.
#
# To understand how the build system works and how to modify it, see
# http://hackage.haskell.org/trac/ghc/wiki/Building/Architecture
# http://hackage.haskell.org/trac/ghc/wiki/Building/Modifying
#
# -----------------------------------------------------------------------------
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We were generating a label ".LnLC7", which the splitter was confusing
with a literal constant (LC). The end result was the assembler tripping
up on ".Ln.text".
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The problem of the splitter was that it re-emitted section directives
for every dynamic label found. The following was torn apart
.symbol_stubs
.indirect <symbol>
L_<symbol>$stub:
jmp *...
L_<symbol>$stub_binder:
..somebinding code..
into
.symbol_stubs
.indirect_symbol <symbol>
L_<symbol>$stub:
jmp *...
.symbol_stubs <--- NEW
L_<symbol>$stub_binder:
..somebinding code..
This is incorrect as the Mac OS assembler enforces that every new code
section that goes into .symbol_stubs is associated with the linker
directive .indirect_symbol. This sanity check is obviously violated
when we reemit .symbol_stub in the splitter. The solution is to ignore
everything that ends with $stub_binder as new label, and chuck it into
a single label for $stub.
Also the splitter has to recognize .section __DATA... for the lazy_ptr
indirection symbol. Adds a reminder to PositionIndependentCode.hs to
take care of the splitter when the code generation is changed.
This should not affect -fvia-c as the code generated by the C compiler
is entirely different.
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Bindists should now work again, when doing "make install" at least.
"make in-place" is probably still broken.
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Key changes:
* Always build as if BIN_DIST is 1. BIN_DIST is thus removed.
* Libraries are configured with prefix set to $$topdir rather than $(prefix)
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Most of the other users of the fptools build system have migrated to
Cabal, and with the move to darcs we can now flatten the source tree
without losing history, so here goes.
The main change is that the ghc/ subdir is gone, and most of what it
contained is now at the top level. The build system now makes no
pretense at being multi-project, it is just the GHC build system.
No doubt this will break many things, and there will be a period of
instability while we fix the dependencies. A straightforward build
should work, but I haven't yet fixed binary/source distributions.
Changes to the Building Guide will follow, too.
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