| Commit message (Collapse) | Author | Age | Files | Lines |
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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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It's now simpler, and it fails if something fails rather than just
printing an error message and continuing.
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Also added a large comment about why we need it
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With Windows 7 in a vitrual box VM on OS X, some very odd things happen
with dates and time stamps when SSHing into cygwin. e.g. here the
"Change" time is in the past:
$ date; touch foo; stat foo
Fri Dec 2 16:58:07 GMTST 2011
File: `foo'
Size: 0 Blocks: 0 IO Block: 65536 regular
empty file
Device: 540aba0bh/1409989131d Inode: 562949953592977 Links: 1
Access: (0644/-rw-r--r--) Uid: ( 1000/ ian) Gid: ( 513/ None)
Access: 2011-12-02 16:58:07.414457900 +0000
Modify: 2011-12-02 16:58:07.414457900 +0000
Change: 2011-12-02 16:58:03.495141800 +0000
Birth: 2011-12-02 16:57:57.731469900 +0000
And if we copy such a file, then the copy is older (as determined by the
"Modify" time) than the original:
$ date; touch foo; stat foo; cp foo bar; stat bar
Fri Dec 2 16:59:10 GMTST 2011
File: `foo'
Size: 0 Blocks: 0 IO Block: 65536 regular
empty file
Device: 540aba0bh/1409989131d Inode: 1407374883725128 Links: 1
Access: (0644/-rw-r--r--) Uid: ( 1000/ ian) Gid: ( 513/ None)
Access: 2011-12-02 16:59:10.118457900 +0000
Modify: 2011-12-02 16:59:10.118457900 +0000
Change: 2011-12-02 16:59:06.189477700 +0000
Birth: 2011-12-02 16:57:57.731469900 +0000
File: `bar'
Size: 0 Blocks: 0 IO Block: 65536 regular
empty file
Device: 540aba0bh/1409989131d Inode: 281474976882512 Links: 1
Access: (0644/-rw-r--r--) Uid: ( 1000/ ian) Gid: ( 513/ None)
Access: 2011-12-02 16:59:06.394555800 +0000
Modify: 2011-12-02 16:59:06.394555800 +0000
Change: 2011-12-02 16:59:06.395532400 +0000
Birth: 2011-12-02 16:58:40.921899600 +0000
This means that make thinks that things are out of date when it
shouldn't, so reinvokes itself repeatedly until the MAKE_RESTARTS
infinite-recursion test triggers.
The touchy program, like most other programs, creates files with both
Modify and Change in the past, which is still a little odd, but is
consistent, so doesn't break make.
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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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Bindists should now work again, when doing "make install" at least.
"make in-place" is probably still broken.
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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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