One GIT Build Script to Rule them all

There seem to be at least 2 camps of GIT Users on OS X, those who installed git with the Mac OS X Package installer and those who installed it from Mac Ports. On my new project Gitty (a Git Repo inspector/manager just beginning development), I didn't want to discriminate, but at the same time I didn't know perl well enough to modify Marcus Zarra's Build Script beyond changing /opt/local/bin/git to /usr/local/git/bin/git. However one of my followers on Twitter was kind enough to modify the perl build script that sticks part of the GIT Hash in the about box to search for both locations and use which ever one you have installed so that it is now GIT Location Agnostic. It looks for the standard install location first and then if It can't find that searches for the MacPorts git install location and uses that. This works great for me and so i thought i'd share... enjoy. Thanks

# Xcode auto-versioning script for Subversion by Axel Andersson
# Updated for git by Marcus S. Zarra and Matt Long
# Updated to use git in the Standard Install Location or the MacPorts
#   install location by Patrick Burleson
 
use strict;
 
# Get the current git commit hash and use it to set the CFBundleVersion value
my $REV = "";

if( -e "/usr/local/git/bin/git" ) 
{
    $REV = `/usr/local/git/bin/git show --abbrev-commit | grep "^commit"`;
}
elsif ( -e "/opt/local/bin/git" )
{
    $REV = `/opt/local/bin/git show --abbrev-commit | grep "^commit"`;
}
else 
{
    die "Git not found";
}

my $INFO = "$ENV{BUILT_PRODUCTS_DIR}/$ENV{WRAPPER_NAME}/Contents/Info.plist";
 
my $version = $REV;
if( $version =~ /^commit\s+([^.]+)\.\.\.$/ )
{ 
    $version = $1;
}
else
{
    $version = undef;
}
die "$0: No Git revision found" unless $version;
 
open(FH, "$INFO") or die "$0: $INFO: $!";
my $info = join("", <FH>);
close(FH);
 
$info =~ s/([\t ]+<key>CFBundleVersion<\/key>\n[\t ]+<string>).*?(<\/string>)/$1$version$2/;
 
open(FH, ">$INFO") or die "$0: $INFO: $!";
print FH $info;
close(FH);