Installing ghc on OS X and getting "./configure: line 11082: syntax error: unexpected end of file"

While trying to install ghc from MacPorts I kept getting this:

[...]
--->  Fetching ghc
--->  Attempting to fetch ghc-6.10.3-src.tar.bz2 from 

http://distfiles.macports.org/ghc
--->  Attempting to fetch ghc-6.10.3-src-extralibs.tar.bz2 from 

http://distfiles.macports.org/ghc
--->  Attempting to fetch testsuite-6.10.3.tar.bz2 from 

http://distfiles.macports.org/ghc
--->  Attempting to fetch ghc-6.8.2-darwin-i386-leopard-bootstrap.tar.bz2 from 

http://distfiles.macports.org/ghc
--->  Verifying checksum(s) for ghc
--->  Extracting ghc
--->  Applying patches to ghc
--->  Configuring ghc
Error: Target org.macports.configure returned: configure failure: shell command 

" cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.

macports.org_release_ports_lang_ghc/work/ghc-6.10.3" && ./configure 

--prefix=/opt/local 

--prefix=/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.

macports.org_release_ports_lang_ghc/work/destroot/opt/local 

--datadir=/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.

macports.org_release_ports_lang_ghc/work/destroot/opt/local/share/ghc-6.10.3 

--with-gmp-includes=/opt/local/include --with-gmp-libraries=/opt/local/lib 

--with-ghc='/opt/local/var/macports/build/

_opt_local_var_macports_sources_rsync.macports.org_release_ports_lang_ghc/

work/ghc-bootstrap/bin/ghc' --with-gcc=/usr/bin/gcc-4.0 " returned error 2

Command output: checking build system type... i386-apple-darwin9.7.0
checking host system type... i386-apple-darwin9.7.0
checking target system type... i386-apple-darwin9.7.0
Canonicalised to: i386-apple-darwin
checking version of ghc... 6.8.2
checking for nhc... no
checking for nhc98... no
checking for hbc... no
checking for ld... /usr/bin/ld
./configure: line 11082: syntax error: unexpected end of file

Turns out there's some old cruft in the ghc autoconf macros that were causing the break. The fix was a simple:

$ sudo port selfupdate && sudo port clean ghc && sudo port install ghc

You can see the filed bug and changeset at MacPorts for more information.