f6e80bdea2
New `depends_on :python` Dependency.
New `depends_on :python3` Dependency.
To avoid having multiple formulae with endings -py2 and -py3,
we will handle support for different pythons (2.x vs. 3.x)
in the same formula.
Further brewed vs. external python will be transparently supported.
The formula also gets a new object `python`, which is false if
no Python is available or the user has disabled it. Otherwise
it is defined and provides several support methods:
python.site_packages # the site-packages in the formula's Cellar
python.global_site_packages
python.binary # the full path to the python binary
python.prefix
python.version
python.version.major
python.version.minor
python.xy # => e.g. "python2.7"
python.incdir # includes of python
python.libdir # the python dylib library
python.pkg_config_path # used internally by brew
python.from_osx?
python.framework?
python.universal?
python.pypy?
python.standard_caveats # Text to set PYTHONPATH for python.from_osx?
python.if3then3 # => "" for 2.x and to "3" for 3.x.
Further, to avoid code duplication, `python` takes an optional
block that is run twice if the formula defines depends_on
:python AND :python3.
python do
system python, 'setup.py', "--prefix=#{prefix}"
end
Read more in the Homebrew wiki.
66 lines
1.8 KiB
Ruby
66 lines
1.8 KiB
Ruby
require 'formula'
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class Libxml2 < Formula
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homepage 'http://xmlsoft.org'
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url 'ftp://xmlsoft.org/libxml2/libxml2-2.9.1.tar.gz'
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mirror 'http://xmlsoft.org/sources/libxml2-2.9.1.tar.gz'
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sha256 'fd3c64cb66f2c4ea27e934d275904d92cec494a8e8405613780cbc8a71680fdb'
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keg_only :provided_by_osx
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option :universal
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depends_on :python => :recommended
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fails_with :llvm do
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build 2326
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cause "Undefined symbols when linking"
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end
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def install
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ENV.universal_binary if build.universal?
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system "./configure", "--disable-dependency-tracking",
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"--prefix=#{prefix}",
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"--without-python"
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system "make"
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ENV.deparallelize
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system "make install"
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python do
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# This python do block sets up the site-packages in the Cellar.
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cd 'python' do
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# We need to insert our include dir first
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inreplace 'setup.py', 'includes_dir = [', "includes_dir = ['#{include}', '#{MacOS.sdk_path}/usr/include',"
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system python, 'setup.py', "install", "--prefix=#{prefix}"
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end
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# This is keg_only but it makes sense to have the python bindings:
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ohai 'Linking python bindings'
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Dir["#{python.site_packages}/*"].each{ |f|
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path = python.global_site_packages/(Pathname.new(f).basename)
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puts path
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rm path if path.exist?
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ln_s f, path
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}
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end
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end
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def caveats
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<<-EOS.undent
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Even if this formula is keg_only, the python bindings have been linked
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into the global site-packages for your convenience.
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#{python.global_site_packages}
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EOS
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end if build.with? 'python'
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def test
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if build.with? 'python'
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system python, '-c', "import libxml2"
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else
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puts "No tests beacuse build --wtihout-python."
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true
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end
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end
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end
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