py2cairo: fix miscompile on Lion. Use LINKFLAG.
waf miscompiles py2cairo on Lion, linking the wrong Python Library when HB Python is installed. So add a LINKFLAG that sets the path to the real python Library as determined by `python-prefix`, where it gets used at link time and fixes the problem where you can't import cairo into Python. Also add a `fails_with :llvm` block to work around a build error where waf tries to optimize with `-march=native` which llvm doesn't accept. https://bugs.freedesktop.org/show_bug.cgi?id=51544 Tested on Lion and SL using system Python, HB framework Python, HB non-framework Python with clang building both native and universal binaries, by importing the cairo module into Python. Rebased on Homebrew 0.9.2 Fixes Homebrew/homebrew#12893 Closes Homebrew/homebrew#12943. Signed-off-by: Jack Nagel <jacknagel@gmail.com>master
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@ -8,6 +8,11 @@ class Py2cairo < Formula
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depends_on 'cairo'
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depends_on :x11
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fails_with :llvm do
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build 2336
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cause "The build script will set -march=native which llvm can't accept"
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end
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def options
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[['--universal', 'Build universal binaries']]
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end
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@ -22,7 +27,24 @@ class Py2cairo < Formula
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end
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end
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# waf miscompiles py2cairo on Lion, linking the wrong Python Library when
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# HB Python is installed. So add a LINKFLAG that sets the path to the real
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# python Library as determined by `python-prefix`, where it gets used at
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# link time and fixes the problem where you can't import cairo into Python.
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# https://github.com/mxcl/homebrew/issues/12893
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# https://bugs.freedesktop.org/show_bug.cgi?id=51544
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ENV['LINKFLAGS'] = "-L#{%x(python-config --prefix).chomp}/lib"
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system "./waf", "configure", "--prefix=#{prefix}", "--nopyc", "--nopyo"
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system "./waf", "install"
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end
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def caveats; <<-EOS.undent
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For non-homebrew Python, you need to amend your PYTHONPATH like so:
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export PYTHONPATH=#{HOMEBREW_PREFIX}/lib/#{which_python}/site-packages:$PYTHONPATH
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EOS
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end
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def which_python
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"python" + `python -c 'import sys;print(sys.version[:3])'`.strip
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end
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end
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