Install Git on Mac OS X from Source

.gitconfig

[user]
	name = Matt Di Pasquale
	email = my@fake-email.com
[alias]
	ad = add -A
	br = branch
	cr = clone --recursive
	ci = commit -av
	cm = commit -am
	co = checkout
	df = diff
	dh = diff -w -M --color-words HEAD
	dw = diff -w -M --color-words
	lg = log
	ll = log -p
	rb = rebase
	rba = rebase --abort
	rbc = rebase --continue
	rbi = rebase --interactive
	re = remote
	st = status
	tree = log --graph --decorate --pretty=oneline --abbrev-commit --all
[rerere]
	enabled = 1

.gitignore

.DS_Store
xcuserdata
xcshareddata

git-install.bash

#!/bin/bash

# Install Git on Mac OS X 10.6 (Snow Leopard) Intel x86 (32 or 64 bit)
#
# UPDATE: Use Homebrew instead of this script.
# This script no longer works but may still be a good starting point.
#
# About: This shell script installs the latest version of Git into /usr/local
# because that's the standard directory to install additional software and is
# also recommended by Homebrew (http://mxcl.github.com/homebrew/). This script
# is very similar to the Homebrew Git Formula:
# https://github.com/mxcl/homebrew/blob/master/Library/Formula/git.rb
#
# Note: If you have mysql installed in /usr/local (which you can determine by
# running `which mysql`), I recommend stopping mysql before running this script.
# If mysql is installed in /usr/local but /usr/local/mysql/data doesn't exist,
# manually run `sudo chown -R _mysql:wheel "path/to/mysql/data" after.
#
# Instructions:
#
# 1. Install Xcode (http://developer.apple.com/xcode/).
# 2. Run these Terminal commands to download it to ~/Sources/ & run it.
#    pushd ~/Sources/; curl https://gist.github.com/raw/419201/git-install.bash > git-install.bash; bash git-install.bash; popd
#    Or, download & run this file from the dir in which you store source files.
#   - For 32-bit install, just open git-install.bash and change the occurrences
#     of `-arch x86_64` to `-arch i386`.
#   TODO:
#     Use `arch` command to detect. If not x86_64, warn and allow user to
#     choose via STDIN. If you're reading this right now, that means you're It!
#     Implement & email me update, and you'll fall in love 3 months later! :)
#   - Open Terminal to that directory and run: bash git-install.sh
#
# References:
# http://www.gnu.org/software/make/manual/make.html
# http://www.gnu.org/software/autoconf/manual/make/Standard-Targets.html
# http://developer.apple.com/mac/library/DOCUMENTATION/Darwin/Reference/ManPages/man1/gcc.1.html
# man make
# man strip
# Git source files:
# - Makefile : http://git.kernel.org/?p=git/git.git;a=blob_plain;f=Makefile;hb=HEAD
# - INSTALL : http://git.kernel.org/?p=git/git.git;a=blob_plain;f=INSTALL;hb=HEAD


###############################################################################
### Download the Latest Stable Version of Git #################################
###############################################################################

# NOTE: This part is broken because the website changed.
echo "Scraping Git's latest stable release version number off the home page"
LSR_NUM=$(curl -silent http://git-scm.com/ | sed -n '/id="ver"/ s/.*v\([0-9].*\)<.*/\1/p')

echo "Downloading & unpacking Git's latest stable release: git-$LSR_NUM"
curl http://kernel.org/pub/software/scm/git/git-$LSR_NUM.tar.gz | tar -xz
pushd git-$LSR_NUM


###############################################################################
### Compile & Install Git #####################################################
###############################################################################

CFLAGS="-isysroot /Developer/SDKs/MacOSX10.6.sdk -arch x86_64"
LDFLAGS="-isysroot /Developer/SDKs/MacOSX10.6.sdk -arch x86_64"
PREFIX="/usr/local"

export NO_FINK=1
export NO_DARWIN_PORTS=1

echo "Taking ownership of $PREFIX (as homebrew advises) so you don't have to sudo"
# http://userprimary.net/posts/2010/08/19/installing-homebrew-for-OSX/
sudo mkdir -p "$PREFIX"
sudo chown -R "$USER:staff" "$PREFIX"
sudo chown -R _mysql:wheel "$PREFIX/mysql/data" # if mysql data dir exists

echo "Compiling & Installing Git to $PREFIX"

# Compile (make all)
make CFLAGS="$CFLAGS" LDFLAGS="$LDFLAGS" prefix="$PREFIX" all
# Strip (make strip)
make CFLAGS="$CFLAGS" LDFLAGS="$LDFLAGS" prefix="$PREFIX" strip
# Install (make install)
mkdir -p "$PREFIX/share/man"
make CFLAGS="$CFLAGS" LDFLAGS="$LDFLAGS" prefix="$PREFIX" install


###############################################################################
### Install Git Tab-Completion for Terminal Usage #############################
###############################################################################

echo "Copying Git's Bash completion script to $HOME/.git-completion.bash"
cp contrib/completion/git-completion.bash "$HOME/.git-completion.bash"

if [[ ! -s "$HOME/.bash_profile" && -s "$HOME/.profile" ]] ; then
  profile_file="$HOME/.profile"
else
  profile_file="$HOME/.bash_profile"
fi

if ! grep -q 'git-completion.bash' "${profile_file}" ; then
  echo "Editing ${profile_file} to load ~/.git-completion.bash on Terminal launch"
  echo >> "${profile_file}"
  echo "source ~/.git-completion.bash" >> "${profile_file}"
fi


###############################################################################
### Install Manpages ##########################################################
###############################################################################

echo "Downloading & unpacking Git Manpages to $PREFIX/share/man/"
curl http://www.kernel.org/pub/software/scm/git/git-manpages-$LSR_NUM.tar.gz |
    tar -xzC "$PREFIX/share/man/"


###############################################################################
### Clean Up: If you move something, put it back. #############################
###############################################################################
# Note: We leave the source files, but you may delete them because they're only
# needed to install Git.

unset LSR_NUM

unset CFLAGS
unset LDFLAGS
unset PREFIX

unset NO_FINK
unset NO_DARWIN_PORTS

popd

gitconfig.bash

# Install these useful Git aliases & configurations with the following command:
# $ bash <(curl -s https://gist.githubusercontent.com/mattdipasquale/419201/raw/gitconfig.bash)

echo "Set your name & email to be added to your commits."
echo -n "Please enter your name: "
read git_name
echo -n "Please enter your email: "
read git_email
git config --global user.name "$git_name"
git config --global user.email "$git_email"
unset git_name
unset git_email

git config --global alias.ad "add -A"
git config --global alias.br branch
git config --global alias.cr "clone --recursive"
git config --global alias.ci "commit -av"
git config --global alias.cm "commit -am"
git config --global alias.co checkout
git config --global alias.df diff
git config --global alias.dh "diff -w -M --color-words HEAD"
git config --global alias.dw "diff -w -M --color-words"
git config --global alias.lg log
git config --global alias.ll "log -p"
git config --global alias.rb rebase
git config --global alias.rba "rebase --abort"
git config --global alias.rbc "rebase --continue"
git config --global alias.rbi "rebase --interactive"
git config --global alias.re remote
git config --global alias.st status
git config --global alias.tree "log --graph --decorate --pretty=oneline --abbrev-commit --all"

git config --global color.ui auto
git config --global color.interactive auto

git config --global rerere.enabled 1

useful!

an alert: to work in 32 bits version it's necessary remove "-arch x86_64" in lines 63 and 64 from git-install.bash file.

Do not use git-install.bash to install Git. Use homebrew instead. Homebrew also has an option you can set to install the 32-bit version.