I see, so I guess the short answer is "there's just no easy way to do it for
now". Perhaps I'll write a Perl script that will do it for me while waiting
for a standardized solution. The issue of source/binary version mismatches
shouldn't be a problem as long as the source I copy over is the same source
I built from right? Or are you suggesting that sometimes the source is
transformed during the build process before being compiled?
It isn't just a matter of scripting (you could 'cabal unpack' all your
installed packages somewhere), but of source code interpretation
being partially package-based (eg, if you have two packages providing
alternative implementations of the same modules, it is cabal's job to
organize the hiding of one while building or using the other; if you just
use ghc's import chasing over a list of import directories containing the
sources of both packages, things are likely to fail).
If you keep the sources around from the build, at least all the preprocessing
and configuration will have been done and match the installed binaries.
If you get something working (for which editor, btw?), you might want
to add your experiences to one of those tickets, or the wiki. It isn't that
this would be impossible, just not trivial, so we have to keep adding
information on possible solutions/issues until a viable design for a
standard solution emerges.
Are you sure you've configured for mingw? Otherwise the build
system will try to proceed in cygwin, as if for a unix platform.
I'm pretty sure I'm NOT configured for MinGW when I was trying to build
under Cygwin. I just assumed that the process would be completely
independent of the mingw process. What do I need to do configure the cygwin
environment for MinGW?
Not configure cygwin, but configure the ghc build (so that it will pick
up mingw gcc/ld even while using cygwin sh/make/configure). See
wiki:Building for details.
However, building under MSYS everything works perfectly. Is
Cygwin just not supported, or do I need to change something here? I don't
see any point in cluttering up my system with tons of extra software like
MinGW, msys, etc if Cygwin works fine.
Mingw provides the C compiler, msys or cygwin the build tools.
Even under cygwin, you still need to configure to use the mingw
C compiler and linker (not the cygwin versions of these).
Simon Marlow has recently cleaned up the build instructions
http://hackage.haskell.org/trac/ghc/wiki/Building
If there's still anything missing or ambiguous in there, please provide
details, questions, or improve the wiki pages. We all like those
instructions to be accurate, for the next time we start from scratch!-)
Is there a way to download a windows binary distribution of GCC myself and
have Cygwin use my version of GCC and Cygwin's version of all tools? It
just seems a little superfluous to have two unix environments (Cygwin and
mingw) and two separate copies of GCC installed (since I already use windows
GCC for other reasons)
mingw is a windows binary distribution of gcc/ld/.. (which create
windows-native executables) - you need this.
msys and cygwin are unix-like environments (sh/make/configure/ ..) -
you need exacty one of these.
cygwin has its own versions of gcc/ld (which generate cygwin-dependent
executables*) - you don't need these (not likely to work for ghc builds).
Most of which I mentioned before, as does the wiki.
Claus
*cygwin's gcc/ld used to have a native mode, but the sources for
that may not be in sync with the now separate mingw gcc/ld, may
not do the same thing, and are not likely to work for ghc builds
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