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homebrew-core/Formula/python3.rb
Jack Nagel b1a4482326 python: write distutils.cfg atomically
2014-04-15 12:19:32 -05:00

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require 'formula'
class Python3 < Formula
homepage 'https://www.python.org/'
url 'https://python.org/ftp/python/3.4.0/Python-3.4.0.tgz'
sha1 'bb5125d1c437caa5a62e0a3d0fee298e91196d6f'
revision 1
bottle do
sha1 "0b1ac4c596a2feeea3869e7d332d5e94fec56074" => :mavericks
sha1 "be6e2eb4f99c04ec2533449033faa09dd11d0e51" => :mountain_lion
sha1 "70af6aeb01ec8fbeb0e029677b1fa8bb2d1b5a7e" => :lion
end
VER='3.4' # The <major>.<minor> is used so often.
head 'http://hg.python.org/cpython', :using => :hg, :branch => VER
option :universal
option 'quicktest', 'Run `make quicktest` after the build'
option 'with-brewed-tk', "Use Homebrew's Tk (has optional Cocoa and threads support)"
depends_on 'pkg-config' => :build
depends_on 'readline' => :recommended
depends_on 'sqlite' => :recommended
depends_on 'gdbm' => :recommended
depends_on 'openssl'
depends_on 'xz' => :recommended # for the lzma module added in 3.3
depends_on 'homebrew/dupes/tcl-tk' if build.with? 'brewed-tk'
depends_on :x11 if build.with? 'brewed-tk' and Tab.for_name('tcl-tk').used_options.include?('with-x11')
skip_clean "bin/pip3", "bin/pip-#{VER}"
skip_clean "bin/easy_install3", "bin/easy_install-#{VER}"
patch :DATA if build.with? 'brewed-tk'
def site_packages_cellar
prefix/"Frameworks/Python.framework/Versions/#{VER}/lib/python#{VER}/site-packages"
end
# The HOMEBREW_PREFIX location of site-packages.
def site_packages
HOMEBREW_PREFIX/"lib/python#{VER}/site-packages"
end
fails_with :llvm do
build '2336'
cause <<-EOS.undent
Could not find platform dependent libraries <exec_prefix>
Consider setting $PYTHONHOME to <prefix>[:<exec_prefix>]
python.exe(14122) malloc: *** mmap(size=7310873954244194304) failed (error code=12)
*** error: can't allocate region
*** set a breakpoint in malloc_error_break to debug
Could not import runpy module
make: *** [pybuilddir.txt] Segmentation fault: 11
EOS
end
def install
# Unset these so that installing pip and setuptools puts them where we want
# and not into some other Python the user has installed.
ENV['PYTHONHOME'] = nil
ENV['PYTHONPATH'] = nil
args = %W[
--prefix=#{prefix}
--enable-ipv6
--datarootdir=#{share}
--datadir=#{share}
--enable-framework=#{frameworks}
]
args << '--without-gcc' if ENV.compiler == :clang
if superenv?
distutils_fix_superenv(args)
else
distutils_fix_stdenv
end
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"))', 'pass') if build.with? 'sqlite'
# Allow python modules to use ctypes.find_library to find homebrew's stuff
# even if homebrew is not a /usr/local/lib. Try this with:
# `brew install enchant && pip install pyenchant`
inreplace "./Lib/ctypes/macholib/dyld.py" do |f|
f.gsub! 'DEFAULT_LIBRARY_FALLBACK = [', "DEFAULT_LIBRARY_FALLBACK = [ '#{HOMEBREW_PREFIX}/lib',"
f.gsub! 'DEFAULT_FRAMEWORK_FALLBACK = [', "DEFAULT_FRAMEWORK_FALLBACK = [ '#{HOMEBREW_PREFIX}/Frameworks',"
end
if build.with? 'brewed-tk'
tcl_tk = Formula["tcl-tk"].opt_prefix
ENV.append 'CPPFLAGS', "-I#{tcl_tk}/include"
ENV.append 'LDFLAGS', "-L#{tcl_tk}/lib"
end
system "./configure", *args
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
system "make", "frameworkinstallextras", "PYTHONAPPSDIR=#{share}/python3"
system "make", "quicktest" if build.include? "quicktest"
# Any .app get a " 3" attached, so it does not conflict with python 2.x.
Dir.glob(prefix/"*.app").each do |app|
mv app, app.gsub(".app", " 3.app")
end
# A fix, because python and python3 both want to install Python.framework
# and therefore we can't link both into HOMEBREW_PREFIX/Frameworks
# https://github.com/Homebrew/homebrew/issues/15943
["Headers", "Python", "Resources"].each{ |f| rm(prefix/"Frameworks/Python.framework/#{f}") }
rm prefix/"Frameworks/Python.framework/Versions/Current"
# Remove 2to3 because python2 also installs it
rm bin/"2to3"
# Remove the site-packages that Python created in its Cellar.
site_packages_cellar.rmtree
end
def post_install
# Fix up the site-packages so that user-installed Python software survives
# minor updates, such as going from 3.3.2 to 3.3.3:
# Create a site-packages in HOMEBREW_PREFIX/lib/python#{VER}/site-packages
site_packages.mkpath
# Symlink the prefix site-packages into the cellar.
site_packages_cellar.unlink if site_packages_cellar.exist?
site_packages_cellar.parent.install_symlink site_packages
# Write our sitecustomize.py
rm_rf Dir["#{site_packages}/sitecustomize.py[co]"]
(site_packages/"sitecustomize.py").atomic_write(sitecustomize)
# Remove old setuptools installations that may still fly around and be
# listed in the easy_install.pth. This can break setuptools build with
# zipimport.ZipImportError: bad local file header
# setuptools-0.9.8-py3.3.egg
rm_rf Dir["#{site_packages}/setuptools*"]
rm_rf Dir["#{site_packages}/distribute*"]
# Install the bundled pip if it's newer than the installed version
system bin/"python3", "-m", "ensurepip", "--upgrade"
# And now we write the distutils.cfg
cfg = prefix/"Frameworks/Python.framework/Versions/#{VER}/lib/python#{VER}/distutils/distutils.cfg"
cfg.atomic_write <<-EOF.undent
[global]
verbose=1
[install]
prefix=#{HOMEBREW_PREFIX}
EOF
end
def distutils_fix_superenv(args)
# To allow certain Python bindings to find brewed software (and sqlite):
sqlite = Formula["sqlite"].opt_prefix
cflags = "CFLAGS=-I#{HOMEBREW_PREFIX}/include -I#{sqlite}/include"
ldflags = "LDFLAGS=-L#{HOMEBREW_PREFIX}/lib -L#{sqlite}/lib"
unless MacOS::CLT.installed?
# Help Python's build system (setuptools/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}"
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"
if build.without? 'brewed-tk'
cflags += " -I#{MacOS.sdk_path}/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers"
end
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 makes cc always find 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
def distutils_fix_stdenv
# 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/Homebrew/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
def sitecustomize
<<-EOF.undent
# This file is created by Homebrew and is executed on each python startup.
# Don't print from here, or else python command line scripts may fail!
# <https://github.com/Homebrew/homebrew/wiki/Homebrew-and-Python>
import os
import sys
if sys.version_info[0] != 3:
# This can only happen if the user has set the PYTHONPATH for 3.x and run Python 2.x or vice versa.
# Every Python looks at the PYTHONPATH variable and we can't fix it here in sitecustomize.py,
# because the PYTHONPATH is evaluated after the sitecustomize.py. Many modules (e.g. PyQt4) are
# built only for a specific version of Python and will fail with cryptic error messages.
# In the end this means: Don't set the PYTHONPATH permanently if you use different Python versions.
exit('Your PYTHONPATH points to a site-packages dir for Python 3.x but you are running Python ' +
str(sys.version_info[0]) + '.x!\\n PYTHONPATH is currently: "' + str(os.environ['PYTHONPATH']) + '"\\n' +
' You should `unset PYTHONPATH` to fix this.')
else:
# Only do this for a brewed python:
opt_executable = '#{opt_bin}/python#{VER}'
if os.path.realpath(sys.executable) == os.path.realpath(opt_executable):
# Remove /System site-packages, and the Cellar site-packages
# which we moved to lib/pythonX.Y/site-packages. Further, remove
# HOMEBREW_PREFIX/lib/python because we later addsitedir(...).
sys.path = [ p for p in sys.path
if (not p.startswith('/System') and
not p.startswith('#{HOMEBREW_PREFIX}/lib/python') and
not (p.startswith('#{rack}') and p.endswith('site-packages'))) ]
# LINKFORSHARED (and python-config --ldflags) return the
# full path to the lib (yes, "Python" is actually the lib, not a
# dir) so that third-party software does not need to add the
# -F/#{HOMEBREW_PREFIX}/Frameworks switch.
# Assume Framework style build (default since months in brew)
try:
from _sysconfigdata import build_time_vars
build_time_vars['LINKFORSHARED'] = '-u _PyMac_Error #{opt_prefix}/Frameworks/Python.framework/Versions/#{VER}/Python'
except:
pass # remember: don't print here. Better to fail silently.
# Set the sys.executable to use the opt_prefix
sys.executable = opt_executable
# Tell about homebrew's site-packages location.
# This is needed for Python to parse *.pth.
import site
site.addsitedir('#{site_packages}')
EOF
end
def caveats
text = <<-EOS.undent
Pip has been installed. To update it
pip3 install --upgrade pip
You can install Python packages with
pip3 install <package>
They will install into the site-package directory
#{site_packages}
See: https://github.com/Homebrew/homebrew/wiki/Homebrew-and-Python
EOS
# Tk warning only for 10.6
tk_caveats = <<-EOS.undent
Apple's Tcl/Tk is not recommended for use with Python on Mac OS X 10.6.
For more information see: http://www.python.org/download/mac/tcltk/
EOS
text += tk_caveats unless MacOS.version >= :lion
return text
end
test do
# 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#{VER}", "-c", "import sqlite3"
# Check if some other modules import. Then the linked libs are working.
system "#{bin}/python#{VER}", "-c", "import tkinter; root = tkinter.Tk()"
end
end
__END__
# Homebrew's tcl-tk is build in a standard unix fashion (due to link errors)
# and we have to stop python from searching for frameworks and link against
# X11.
diff --git a/setup.py b/setup.py
index d4183d4..9f69520 100644
--- a/setup.py
+++ b/setup.py
@@ -1623,9 +1623,6 @@ class PyBuildExt(build_ext):
# Rather than complicate the code below, detecting and building
# AquaTk is a separate method. Only one Tkinter will be built on
# Darwin - either AquaTk, if it is found, or X11 based Tk.
- if (host_platform == 'darwin' and
- self.detect_tkinter_darwin(inc_dirs, lib_dirs)):
- return
# Assume we haven't found any of the libraries or include files
# The versions with dots are used on Unix, and the versions without
@@ -1671,21 +1668,6 @@ class PyBuildExt(build_ext):
if dir not in include_dirs:
include_dirs.append(dir)
- # Check for various platform-specific directories
- if host_platform == 'sunos5':
- include_dirs.append('/usr/openwin/include')
- added_lib_dirs.append('/usr/openwin/lib')
- elif os.path.exists('/usr/X11R6/include'):
- include_dirs.append('/usr/X11R6/include')
- added_lib_dirs.append('/usr/X11R6/lib64')
- added_lib_dirs.append('/usr/X11R6/lib')
- elif os.path.exists('/usr/X11R5/include'):
- include_dirs.append('/usr/X11R5/include')
- added_lib_dirs.append('/usr/X11R5/lib')
- else:
- # Assume default location for X11
- include_dirs.append('/usr/X11/include')
- added_lib_dirs.append('/usr/X11/lib')
# If Cygwin, then verify that X is installed before proceeding
if host_platform == 'cygwin':
@@ -1710,10 +1692,6 @@ class PyBuildExt(build_ext):
if host_platform in ['aix3', 'aix4']:
libs.append('ld')
- # Finally, link with the X11 libraries (not appropriate on cygwin)
- if host_platform != "cygwin":
- libs.append('X11')
-
ext = Extension('_tkinter', ['_tkinter.c', 'tkappinit.c'],
define_macros=[('WITH_APPINIT', 1)] + defs,
include_dirs = include_dirs,
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