Cygwin build problem

[Bryn Keller]

Hi folks,

I'm on a Windows 2000 box with a recent version of Cygwin, trying to 
build ghc 6.3. This is a configuration that successfully built 6.3 a 
couple of weeks ago, but now that I've downloaded a fresh copy of the 
tree I can't seem to build it anymore. It's a configure problem, as 
indicated below. Any ideas?

Thanks,
Bryn

(snip initial configure stuff)

configure: configuring in libraries
configure: running /bin/sh './configure' 
--prefix=/cygdrive/c/lang/ghc-cvs  '--h
ost=i386-unknown-mingw32' '--with-gcc=c:/mingw/bin/gcc' 
'--prefix=/cygdrive/c/la
ng/ghc-cvs' 'host_alias=i386-unknown-mingw32' --cache-file=/dev/null 
--srcdir=.
configure: WARNING: If you wanted to set the --build type, don't use --host.
    If a cross compiler is detected then cross compile mode will be used.
configure: creating ./config.status
configure: configuring in base
configure: running /bin/sh './configure' 
--prefix=/cygdrive/c/lang/ghc-cvs  '--h
ost=i386-unknown-mingw32' '--with-gcc=c:/mingw/bin/gcc' 
'--prefix=/cygdrive/c/la
ng/ghc-cvs' 'host_alias=i386-unknown-mingw32' '--cache-file=/dev/null' 
'--srcdir
=.' --cache-file=/dev/null --srcdir=.
configure: error: invalid variable name: host_alias
configure: error: /bin/sh './configure' failed for base
configure: error: /bin/sh './configure' failed for libraries