brew install -v v8cgi

brew_install_-v_v8cgi.log

brew install -v v8cgi
Also installing dependencies: memcached, libmemcached
==> Downloading http://memcached.googlecode.com/files/memcached-1.4.5.tar.gz
File already downloaded in /Users/shane/Library/Caches/Homebrew
/usr/bin/tar xf /Users/shane/Library/Caches/Homebrew/memcached-1.4.5.tar.gz
==> ./configure --prefix=/usr/local/Cellar/memcached/1.4.5
./configure --prefix=/usr/local/Cellar/memcached/1.4.5
checking build system type... i386-apple-darwin11.0.0
checking host system type... i386-apple-darwin11.0.0
checking target system type... i386-apple-darwin11.0.0
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for a thread-safe mkdir -p... ./install-sh -c -d
checking for gawk... no
checking for mawk... no
checking for nawk... no
checking for awk... awk
checking whether make sets $(MAKE)... yes
checking for gcc... /usr/bin/cc
checking for C compiler default output file name... a.out
checking whether the C compiler works... yes
checking whether we are cross compiling... no
checking for suffix of executables... 
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether /usr/bin/cc accepts -g... yes
checking for /usr/bin/cc option to accept ISO C89... none needed
checking for style of include used by make... GNU
checking dependency style of /usr/bin/cc... gcc3
checking how to run the C preprocessor... /usr/bin/cc -E
checking for grep that handles long lines and -e... /usr/bin/grep
checking for egrep... /usr/bin/grep -E
checking for icc in use... no
checking for Sun cc in use... no
checking for /usr/bin/cc option to accept ISO C99... -std=gnu99
checking whether /usr/bin/cc -std=gnu99 and cc understand -c and -o together... yes
checking for a BSD-compatible install... /usr/bin/install -c
checking for ANSI C header files... yes
checking for sys/types.h... yes
checking for sys/stat.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for memory.h... yes
checking for strings.h... yes
checking for inttypes.h... yes
checking for stdint.h... yes
checking for unistd.h... yes
checking sasl/sasl.h usability... yes
checking sasl/sasl.h presence... yes
checking for sasl/sasl.h... yes
checking for gcov... /usr/bin/gcov
checking for main in -lgcov... yes
checking for libevent directory... configure: error: libevent is required.  You can get it from http://www.monkey.org/~provos/libevent/

      If it's already installed, specify its path using --with-libevent=/dir/

==> Exit Status: 1
http://github.com/mxcl/homebrew/blob/master/Library/Formula/memcached.rb#L20
==> Environment
HOMEBREW_VERSION: 0.8
HEAD: 53adc64eccda9c2194f51b2ed11bc5bf23642a61
HOMEBREW_PREFIX: /usr/local
HOMEBREW_CELLAR: /usr/local/Cellar
HOMEBREW_REPOSITORY: /usr/local
HOMEBREW_LIBRARY_PATH: /usr/local/Library/Homebrew
Hardware: 8-core 64-bit sandybridge
OS X: 10.7
Kernel Architecture: x86_64
Ruby: 1.8.7-249
/usr/bin/ruby => /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby
Xcode: 4.1
GCC-4.0: N/A 
GCC-4.2: build 5666 
LLVM: build 2335 
MacPorts or Fink? false
X11 installed? true
==> Build Flags
CC: /usr/bin/cc => /usr/llvm-gcc-4.2/bin/llvm-gcc-4.2
CXX: /usr/bin/c++ => /usr/llvm-gcc-4.2/bin/llvm-g++-4.2
LD: /usr/bin/cc => /usr/llvm-gcc-4.2/bin/llvm-gcc-4.2
CFLAGS: -O3 -w -pipe
CXXFLAGS: -O3 -w -pipe
MAKEFLAGS: -j8

Error: Failed executing: ./configure --prefix=/usr/local/Cellar/memcached/1.4.5
Please report this bug: https://github.com/mxcl/homebrew/wiki/Checklist-before-filing-a-new-issue
These existing issues may help you:
https://github.com/mxcl/homebrew/issues/#issue/6186
It looks like an autotools configure failed.
Consider re-running the install with '-vd' to keep 'config.log' around:
    brew install -vd memcached
Gist 'config.log' and any error output when reporting an issue.
Remember to include your config information: brew --config

Also try:
  `brew doctor` to check your setup for common problems.
  `brew missing` to check installed packages for missing deps.