Michael@MIKE ~/2/libevent-1.1b
$ patch -p0 <libevent-1.1b-mingw.diff 
patching file `Makefile.am'
patching file `WIN32-Code/misc.c'
patching file `WIN32-Code/misc.h'
patching file `WIN32-Code/win32.c'
patching file `buffer.c'
patching file `configure.in'
patching file `evbuffer.c'
patching file `install-sh'
patching file `missing'
patching file `mkinstalldirs'
Hunk #1 FAILED at 4.
1 out of 3 hunks FAILED -- saving rejects to mkinstalldirs.rej

Michael@MIKE ~/2/libevent-1.1b
$ aclocal;automake;autoconf

Michael@MIKE ~/2/libevent-1.1b
$ ./configure --quiet
appending configuration tag "CXX" to libtool
appending configuration tag "F77" to libtool
./configure: -print-search-dirs: command not found
./configure: -print-search-dirs: command not found

Michael@MIKE ~/2/libevent-1.1b
$ make | grep -i warn
WIN32-Code/misc.c:89:2: warning: no newline at end of file
libtool: link: warning: undefined symbols not allowed in i686-pc-mingw32 shared libraries

#the libtool warning has always been there for me, I'm not sure exactly what it means

Michael@MIKE ~/2/libevent-1.1b
$ make install | grep -i warn

Michael@MIKE ~/2
$ cd ../tor-svn/

Michael@MIKE ~/2/tor-svn
$ make | grep -i warn
compat.c: In function `tor_mmap_file':
compat.c:184: warning: right shift count >= width of type
main.c:1026: warning: 'got_libevent_error' defined but not used