brew install gettext

gettext.log

/bin/sh ../libtool --tag=CC   --mode=compile /usr/bin/cc -std=gnu99 -DHAVE_CONFIG_H -DEXEEXT=\"\" -DEXEEXT=\"\" -DEXEEXT=\"\" -I. -I..  -I../intl -I../intl -I.. -I.. -DDEPENDS_ON_LIBICONV=1 -DDEPENDS_ON_LIBINTL=1  -I../intl   -I./libcroco    -march=core2 -w -pipe  -I/usr/include/libxml2 -O3 -c -o tempname.lo tempname.c
 /usr/bin/cc -std=gnu99 -DHAVE_CONFIG_H -DEXEEXT=\"\" -DEXEEXT=\"\" -DEXEEXT=\"\" -I. -I.. -I../intl -I../intl -I.. -I.. -DDEPENDS_ON_LIBICONV=1 -DDEPENDS_ON_LIBINTL=1 -I../intl -I./libcroco -march=core2 -w -pipe -I/usr/include/libxml2 -O3 -c stpncpy.c  -fno-common -DPIC -o .libs/stpncpy.o
stpncpy.c:33: error: expected declaration specifiers or '...' before numeric constant
stpncpy.c:33: error: expected ')' before '!=' token
stpncpy.c:33: error: expected ')' before '?' token
make[4]: *** [stpncpy.lo] Error 1
make[4]: *** Waiting for unfinished jobs....
 /usr/bin/cc -std=gnu99 -DHAVE_CONFIG_H -DEXEEXT=\"\" -DEXEEXT=\"\" -DEXEEXT=\"\" -I. -I.. -I../intl -I../intl -I.. -I.. -DDEPENDS_ON_LIBICONV=1 -DDEPENDS_ON_LIBINTL=1 -I../intl -I./libcroco -march=core2 -w -pipe -I/usr/include/libxml2 -O3 -c tempname.c  -fno-common -DPIC -o .libs/tempname.o
 /usr/bin/cc -std=gnu99 -DHAVE_CONFIG_H -DEXEEXT=\"\" -DEXEEXT=\"\" -DEXEEXT=\"\" -I. -I.. -I../intl -I../intl -I.. -I.. -DDEPENDS_ON_LIBICONV=1 -DDEPENDS_ON_LIBINTL=1 -I../intl -I./libcroco -march=core2 -w -pipe -I/usr/include/libxml2 -O3 -c tempname.c -o tempname.o >/dev/null 2>&1
make[3]: *** [all] Error 2
make[2]: *** [all-recursive] Error 1
make[1]: *** [all] Error 2
make: *** [all-recursive] Error 1
Exit status: 2

http://github.com/mxcl/homebrew/blob/master/Library/Formula/gettext.rb#L29

==> Environment
HOMEBREW_VERSION: 0.7.1
HEAD: 857678439f00f7c2311275ca4a0e8d0fd119c236
HOMEBREW_PREFIX: /usr/local
HOMEBREW_CELLAR: /usr/local/Cellar
HOMEBREW_REPOSITORY: /usr/local
HOMEBREW_LIBRARY_PATH: /usr/local/Library/Homebrew
Hardware: dual-core 64-bit core2
OS X: 10.7
Kernel Architecture: i386
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 => /Developer/usr/llvm-gcc-4.2/bin/llvm-gcc-4.2
CXX: /usr/bin/c++ => /Developer/usr/llvm-gcc-4.2/bin/llvm-g++-4.2
LD: /usr/bin/cc => /Developer/usr/llvm-gcc-4.2/bin/llvm-gcc-4.2
CFLAGS:  -march=core2 -w -pipe  -I/usr/include/libxml2 -O3
CXXFLAGS:  -march=core2 -w -pipe  -I/usr/include/libxml2 -O3
MAKEFLAGS: -j2
Error: Failure while executing: make 
Please follow the instructions to report this bug at: 
https://github.com/mxcl/homebrew/wiki/new-issue
These existing issues may help you:
http://github.com/mxcl/homebrew/issues/#issue/1905

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