brew install -v redis

gistfile1.txt

MacBook-Air-de-Leonardo:~ leonardorb$ brew install -v redis
==> Downloading http://redis.googlecode.com/files/redis-2.4.7.tar.gz
/usr/bin/curl -qf#LA Homebrew 0.8.1 (Ruby 1.8.7-249; Mac OS X 10.7.3) http://redis.googlecode.com/files/redis-2.4.7.tar.gz -o /Users/leonardorb/Library/Caches/Homebrew/redis-2.4.7.tar.gz
######################################################################## 100.0%
/usr/bin/tar xf /Users/leonardorb/Library/Caches/Homebrew/redis-2.4.7.tar.gz
==> make -C src
make -C src 
MAKE hiredis
    CC ae.o
    CC anet.o
    CC redis-benchmark.o
i686-apple-darwin11-llvm-gcc-4.2: true: No such file or directory
i686-apple-darwin11-llvm-gcc-4.2: true: No such file or directory
i686-apple-darwin11-llvm-gcc-4.2: true: No such file or directory
/usr/bin/llvm-gcc -c -O3 -w -pipe -march=core2 -msse4 -arch x86_64 true  net.c
i686-apple-darwin11-llvm-gcc-4.2: true: No such file or directory
make[1]: *** [net.o] Error 1
make: *** [dependencies] Error 2
make: *** Waiting for unfinished jobs....
make: *** [anet.o] Error 1
make: *** [ae.o] Error 1
make: *** [redis-benchmark.o] Error 1
==> Exit Status: 2
http://github.com/mxcl/homebrew/blob/master/Library/Formula/redis.rb#L18
==> Environment
HOMEBREW_VERSION: 0.8.1
HEAD: 851e2e834434a4d9166e11d0b4c80e3449a717d4
HOMEBREW_PREFIX: /usr/local
HOMEBREW_CELLAR: /usr/local/Cellar
Hardware: quad-core 64-bit sandybridge
OS X: 10.7.3
Kernel Architecture: x86_64
Xcode: 4.2.1
GCC-4.0: N/A
GCC-4.2: build 5666
LLVM: build 2336
Clang: 3.0 build 211
MacPorts or Fink? false
X11 installed? true
System Ruby: 1.8.7-249
/usr/bin/ruby => /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby
Which Perl:   /usr/bin/perl
Which Python: /usr/bin/python
Which Ruby:   /usr/bin/ruby => /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby
==> Build Flags
CC: /usr/bin/llvm-gcc => /usr/llvm-gcc-4.2/bin/llvm-gcc-4.2
CXX: /usr/bin/llvm-g++ => /usr/llvm-gcc-4.2/bin/llvm-g++-4.2
LD: /usr/bin/llvm-gcc => /usr/llvm-gcc-4.2/bin/llvm-gcc-4.2
CFLAGS: -O3 -w -pipe -march=core2 -msse4
CXXFLAGS: -O3 -w -pipe -march=core2 -msse4
MAKEFLAGS: -j4

Error: Failed executing: make -C src 
If `brew doctor' does not help diagnose the issue, please report the bug:
    https://github.com/mxcl/homebrew/wiki/checklist-before-filing-a-new-issue

the formula:
https://github.com/mxcl/homebrew/blob/master/Library/Formula/redis.rb

i'm getting this same issue. did you find work around?