brew install osm2pgsql

gistfile1.sh

dyve:~ dylan$ brew install osm2pgsql
Error: This is a head-only formula; install with `brew install --HEAD osm2pgsql`

dyve:~ dylan$ brew install --HEAD osm2pgsql==> Checking out http://svn.openstreetmap.org/applications/utils/export/osm2pgsql/==> ./autogen.sh
./autogen.sh: line 2: autoreconf: command not found
==> Exit Status: 127
http://github.com/mxcl/homebrew/blob/master/Library/Formula/osm2pgsql.rb#L8
==> Environment
HOMEBREW_VERSION: 0.8.1
HEAD: 753dde9c2cf66848183f3f787f8501dbf5a7e28f
HOMEBREW_PREFIX: /usr/local
HOMEBREW_CELLAR: /usr/local/Cellar
Hardware: dual-core 64-bit penryn
OS X: 10.7.3
Kernel Architecture: x86_64
Xcode: 4.1
GCC-4.0: N/A
GCC-4.2: build 5666
LLVM: build 2336
Clang: 3.1 build 318
MacPorts or Fink? false
X11: /usr/x11
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: -Os -w -pipe -march=core2 -msse4.1
CXXFLAGS: -Os -w -pipe -march=core2 -msse4.1
MAKEFLAGS: -j2

Error: Failed executing: ./autogen.sh 
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
dyve:~ dylan$