homebrew-core/Formula/python.rb
Jack Nagel 8c29982153 Revert "Rename readline to gnu-readline"
This reverts commit adee5315265cc46aa6a3057071527abb16e1cd94.

Turns out one of the "other things" is a dealbreaker.

We only create kegs using a formula's canonical name. However, we do not
check that this is the case when mapping existing kegs back to formula
objects, and thus a keg with a name that happens to be an alias can fool
Homebrew into thinking the canonically-named keg exists.

So anything that enumerates kegs and then tries to do stuff with the
resulting formula objects will just break. This is obviously worse than
the debugger being broken, so reverting this for the time being.
2012-11-10 21:12:26 -06:00

273 lines
11 KiB
Ruby

require 'formula'
class TkCheck < Requirement
def message; <<-EOS.undent
Tk.framework was detected in /Library/Frameworks
This can cause Python builds to fail. See:
https://github.com/mxcl/homebrew/issues/11602
EOS
end
def fatal?; false; end
def satisfied?
not File.exist? '/Library/Frameworks/Tk.framework'
end
end
class Distribute < Formula
url 'http://pypi.python.org/packages/source/d/distribute/distribute-0.6.28.tar.gz'
sha1 '709bd97d46050d69865d4b588c7707768dfe6711'
end
class Pip < Formula
url 'http://pypi.python.org/packages/source/p/pip/pip-1.2.1.tar.gz'
sha1 '35db84983ef3f66a8a161d320e61d192afc233d9'
end
class Python < Formula
homepage 'http://www.python.org'
url 'http://www.python.org/ftp/python/2.7.3/Python-2.7.3.tar.bz2'
sha1 '842c4e2aff3f016feea3c6e992c7fa96e49c9aa0'
depends_on TkCheck.new
depends_on 'pkg-config' => :build
depends_on 'readline' => :recommended
depends_on 'sqlite' => :recommended
depends_on 'gdbm' => :recommended
depends_on 'openssl' if build.include? 'with-brewed-openssl'
option :universal
option 'quicktest', 'Run `make quicktest` after the build'
option 'with-brewed-openssl', "Use Homebrew's openSSL instead of the one from OS X"
option 'with-poll', 'Enable select.poll, which is not fully implemented on OS X (http://bugs.python.org/issue5154)'
# --with-dtrace relies on CLT as dtrace hard-codes paths to /usr
# http://bugs.python.org/issue13405
option 'with-dtrace', 'Install with DTrace support' if MacOS::CLT.installed?
def patches
'https://raw.github.com/gist/3415636/2365dea8dc5415daa0148e98c394345e1191e4aa/pythondtrace-patch.diff'
end if build.include? 'with-dtrace'
def site_packages_cellar
prefix/"Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages"
end
# The HOMEBREW_PREFIX location of site-packages.
def site_packages
HOMEBREW_PREFIX/"lib/python2.7/site-packages"
end
# Where distribute/pip will install executable scripts.
def scripts_folder
HOMEBREW_PREFIX/"share/python"
end
def install
opoo 'The given option --with-poll enables a somewhat broken poll() on OS X (http://bugs.python.org/issue5154).' if build.include? 'with-poll'
# Unset these so that installing pip and distribute puts them where we want
# and not into some other Python the user has installed.
ENV['PYTHONPATH'] = nil
ENV['PYTHONHOME'] = nil
args = %W[
--prefix=#{prefix}
--enable-ipv6
--datarootdir=#{share}
--datadir=#{share}
--enable-framework=#{prefix}/Frameworks
]
args << '--without-gcc' if ENV.compiler == :clang
args << '--with-dtrace' if build.include? 'with-dtrace'
distutils_fix_superenv(args)
distutils_fix_stdenv
if build.universal?
ENV.universal_binary
args << "--enable-universalsdk=/" << "--with-universal-archs=intel"
end
# Allow sqlite3 module to load extensions: http://docs.python.org/library/sqlite3.html#f1
inreplace "setup.py", 'sqlite_defines.append(("SQLITE_OMIT_LOAD_EXTENSION", "1"))', ''
system "./configure", *args
# HAVE_POLL is "broken" on OS X
# See: http://trac.macports.org/ticket/18376 and http://bugs.python.org/issue5154
inreplace 'pyconfig.h', /.*?(HAVE_POLL[_A-Z]*).*/, '#undef \1' unless build.include? "with-poll"
system "make"
ENV.deparallelize # Installs must be serialized
# Tell Python not to install into /Applications (default for framework builds)
system "make", "install", "PYTHONAPPSDIR=#{prefix}"
# Demos and Tools
(HOMEBREW_PREFIX/'share/python').mkpath
system "make", "frameworkinstallextras", "PYTHONAPPSDIR=#{share}/python"
system "make", "quicktest" if build.include? 'quicktest'
# Post-install, fix up the site-packages and install-scripts folders
# so that user-installed Python software survives minor updates, such
# as going from 2.7.0 to 2.7.1:
# Remove the site-packages that Python created in its Cellar.
site_packages_cellar.rmtree
# Create a site-packages in HOMEBREW_PREFIX/lib/python/site-packages
site_packages.mkpath
# Symlink the prefix site-packages into the cellar.
ln_s site_packages, site_packages_cellar
# Teach python not to use things from /System
# and tell it about the correct site-package dir because we moved it
sitecustomize = site_packages_cellar/"sitecustomize.py"
rm sitecustomize if File.exist? sitecustomize
sitecustomize.write <<-EOF.undent
# This file is created by `brew install python` and is executed on each
# python startup. Don't print from here, or else universe will collapse.
import sys
import site
# Only do fix 1 and 2, if the currently run python is a brewed one.
if sys.executable.startswith('#{HOMEBREW_PREFIX}'):
# Fix 1)
# A setuptools.pth and/or easy-install.pth sitting either in
# /Library/Python/2.7/site-packages or in
# ~/Library/Python/2.7/site-packages can inject the
# /System's Python site-packages. People then report
# "OSError: [Errno 13] Permission denied" because pip/easy_install
# attempts to install into
# /System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python
# See: https://github.com/mxcl/homebrew/issues/14712
sys.path = [ p for p in sys.path if not p.startswith('/System') ]
# Fix 2)
# Remove brewed Python's hard-coded site-packages
sys.path.remove('#{site_packages_cellar}')
# Fix 3)
# For all Pythons: Tell about homebrew's site-packages location.
# This is needed for Python to parse *.pth files.
site.addsitedir('#{site_packages}')
EOF
# Install distribute and pip
# It's important to have these installers in our bin, because some users
# forget to put #{script_folder} in PATH, then easy_install'ing
# into /Library/Python/X.Y/site-packages with /usr/bin/easy_install.
mkdir_p scripts_folder unless scripts_folder.exist?
setup_args = ["-s", "setup.py", "--no-user-cfg", "install", "--force", "--verbose", "--install-lib=#{site_packages_cellar}", "--install-scripts=#{bin}" ]
Distribute.new.brew { system "#{bin}/python", *setup_args }
Pip.new.brew { system "#{bin}/python", *setup_args }
# Tell distutils-based installers where to put scripts and python modules
(prefix/"Frameworks/Python.framework/Versions/2.7/lib/python2.7/distutils/distutils.cfg").write <<-EOF.undent
[install]
install-scripts=#{scripts_folder}
install-lib=#{site_packages}
EOF
unless MacOS::CLT.installed?
makefile = prefix/'Frameworks/Python.framework/Versions/2.7/lib/python2.7/config/Makefile'
inreplace makefile do |s|
s.gsub!(/^CC=.*$/, "CC=xcrun clang")
s.gsub!(/^CXX=.*$/, "CXX=xcrun clang++")
s.gsub!(/^AR=.*$/, "AR=xcrun ar")
s.gsub!(/^RANLIB=.*$/, "RANLIB=xcrun ranlib")
end
end
end
def distutils_fix_superenv(args)
if superenv?
# To allow certain Python bindings to find brewed software:
cflags = "CFLAGS=-I#{HOMEBREW_PREFIX}/include"
ldflags = "LDFLAGS=-L#{HOMEBREW_PREFIX}/lib"
unless MacOS::CLT.installed?
# Help Python's build system (distribute/pip) to build things on Xcode-only systems
# The setup.py looks at "-isysroot" to get the sysroot (and not at --sysroot)
cflags += " -isysroot #{MacOS.sdk_path}"
# For the Xlib.h, Python needs this header dir
cflags += " -I#{MacOS.sdk_path}/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers"
ldflags += " -isysroot #{MacOS.sdk_path}"
# Same zlib.h-not-found-bug as in env :std (see below)
args << "CPPFLAGS=-I#{MacOS.sdk_path}/usr/include"
end
args << cflags
args << ldflags
# Avoid linking to libgcc http://code.activestate.com/lists/python-dev/112195/
args << "MACOSX_DEPLOYMENT_TARGET=#{MacOS.version}"
# We want our readline! This is just to outsmart the detection code,
# superenv handles that cc finds includes/libs!
inreplace "setup.py",
"do_readline = self.compiler.find_library_file(lib_dirs, 'readline')",
"do_readline = '#{HOMEBREW_PREFIX}/opt/readline/lib/libhistory.dylib'"
end
end
def distutils_fix_stdenv()
if not superenv?
# Python scans all "-I" dirs but not "-isysroot", so we add
# the needed includes with "-I" here to avoid this err:
# building dbm using ndbm
# error: /usr/include/zlib.h: No such file or directory
ENV.append 'CPPFLAGS', "-I#{MacOS.sdk_path}/usr/include" unless MacOS::CLT.installed?
# Don't use optimizations other than "-Os" here, because Python's distutils
# remembers (hint: `python3-config --cflags`) and reuses them for C
# extensions which can break software (such as scipy 0.11 fails when
# "-msse4" is present.)
ENV.minimal_optimization
# We need to enable warnings because the configure.in uses -Werror to detect
# "whether gcc supports ParseTuple" (https://github.com/mxcl/homebrew/issues/12194)
ENV.enable_warnings
if ENV.compiler == :clang
# http://docs.python.org/devguide/setup.html#id8 suggests to disable some Warnings.
ENV.append_to_cflags '-Wno-unused-value'
ENV.append_to_cflags '-Wno-empty-body'
ENV.append_to_cflags '-Qunused-arguments'
end
end
end
def caveats
<<-EOS.undent
Homebrew's Python framework
#{prefix}/Frameworks/Python.framework
Python demo
#{HOMEBREW_PREFIX}/share/python/Extras
Distribute and Pip have been installed. To update them
pip install --upgrade distribute
pip install --upgrade pip
To symlink "Idle" and the "Python Launcher" to ~/Applications
`brew linkapps`
You can install Python packages with (the outdated easy_install or)
`pip install <your_favorite_package>`
They will install into the site-package directory
#{site_packages}
Executable python scripts will be put in:
#{scripts_folder}
so you may want to put "#{scripts_folder}" in your PATH, too.
See: https://github.com/mxcl/homebrew/wiki/Homebrew-and-Python
EOS
end
def test
# Check if sqlite is ok, because we build with --enable-loadable-sqlite-extensions
# and it can occur that building sqlite silently fails if OSX's sqlite is used.
system "#{bin}/python", "-c", "import sqlite3"
# Check if some other modules import. Then the linked libs are working.
system "#{bin}/python", "-c", "import Tkinter"
end
end