I've been trying to compile guile trunk on Cygwin 1.7.  I had to install
gc-7.1 and libunistring my first.
It seems to compile okay, but "make install" fails with texinfo error.   Not
sure why the cross reference would
on cygwin.  "texi2pdf --version" returns "texi2dvi (GNU Texinfo 4.13) 1.135"
which is same as on Ubuntu 10.04,
where the build completes.   Maybe it's the space in the node name in the
error below:

make  all-am
make[4]: Entering directory
`/cygdrive/c/Users/jsparkes/src/scheme/guile/guile/doc/ref'
restore=: && backupdir=".am$$" && \
        am__cwd=`pwd` && CDPATH="${ZSH_VERSION+.}:" && cd . && \
        rm -rf $backupdir && mkdir $backupdir && \
        if (/bin/sh
/cygdrive/c/Users/jsparkes/src/scheme/guile/guile/build-aux/missing --run
makeinfo --version) >/dev/null 2>&1; then \
          for f in guile.info guile.info-[0-9] guile.info-[0-9][0-9]
guile.i[0-9] guile.i[0-9][0-9]; do \
            if test -f $f; then mv $f $backupdir; restore=mv; else :; fi; \
          done; \
        else :; fi && \
        cd "$am__cwd"; \
        if /bin/sh
/cygdrive/c/Users/jsparkes/src/scheme/guile/guile/build-aux/missing --run
makeinfo   -I . \
         -o guile.info guile.texi; \
        then \
          rc=0; \
          CDPATH="${ZSH_VERSION+.}:" && cd .; \
        else \
          rc=$?; \
          CDPATH="${ZSH_VERSION+.}:" && cd . && \
          $restore $backupdir/* `echo "./guile.info" | sed 's|[^/]*$||'`; \
        fi; \
        rm -rf $backupdir; exit $rc
/cygdrive/c/Users/jsparkes/src/scheme/guile/guile/doc/ref//sxml-match.texi:22:
Cross reference to nonexistent node `sxml simple' (perhaps incorrect
sectioning?).
makeinfo: Removing output file `guile.info' due to errors; use --force to
preserve.


-- 
Jeff Sparkes
jsparkes@gmail.com