Created
May 21, 2013 22:29
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OpenCV 2.4.2 Homebrew Formula
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require 'formula' | |
class Opencv < Formula | |
homepage 'http://opencv.org/' | |
url 'http://sourceforge.net/projects/opencvlibrary/files/opencv-unix/2.4.2/OpenCV-2.4.2.tar.bz2' | |
sha1 '96ff27b87e0f028d1d16201afebabec4e0c72367' | |
env :std # to find python | |
option '32-bit' | |
option 'with-qt', 'Build the Qt4 backend to HighGUI' | |
option 'with-tbb', 'Enable parallel code in OpenCV using Intel TBB' | |
option 'with-opencl', 'Enable gpu code in OpenCV using OpenCL' | |
depends_on 'cmake' => :build | |
depends_on 'pkg-config' => :build | |
depends_on 'numpy' => :python | |
depends_on 'eigen' => :optional | |
depends_on 'libtiff' => :optional | |
depends_on 'jasper' => :optional | |
depends_on 'tbb' => :optional | |
depends_on 'qt' => :optional | |
depends_on :libpng | |
# Can also depend on ffmpeg, but this pulls in a lot of extra stuff that | |
# you don't need unless you're doing video analysis, and some of it isn't | |
# in Homebrew anyway. Will depend on openexr if it's installed. | |
def install | |
args = std_cmake_args + %w[ | |
-DCMAKE_OSX_DEPLOYMENT_TARGET= | |
-DWITH_CUDA=OFF | |
-DBUILD_ZLIB=OFF | |
-DBUILD_TIFF=OFF | |
-DBUILD_PNG=OFF | |
-DBUILD_JPEG=OFF | |
-DBUILD_JASPER=OFF | |
-DBUILD_TESTS=OFF | |
-DBUILD_PERF_TESTS=OFF | |
] | |
if build.build_32_bit? | |
args << "-DCMAKE_OSX_ARCHITECTURES=i386" | |
args << "-DOPENCV_EXTRA_C_FLAGS='-arch i386 -m32'" | |
args << "-DOPENCV_EXTRA_CXX_FLAGS='-arch i386 -m32'" | |
end | |
args << '-DWITH_QT=ON' if build.with? 'qt' | |
args << '-DWITH_TBB=ON' if build.with? 'tbb' | |
args << '-DWITH_OPENCL=ON' if build.with? 'opencl' | |
# The CMake `FindPythonLibs` Module is dumber than a bag of hammers when | |
# more than one python installation is available---for example, it clings | |
# to the Header folder of the system Python Framework like a drowning | |
# sailor. | |
# | |
# This code was cribbed from the VTK formula and uses the output to | |
# `python-config` to do the job FindPythonLibs should be doing in the first | |
# place. | |
python_prefix = `python-config --prefix`.strip | |
# Python is actually a library. The libpythonX.Y.dylib points to this lib, too. | |
if File.exist? "#{python_prefix}/Python" | |
# Python was compiled with --framework: | |
args << "-DPYTHON_LIBRARY='#{python_prefix}/Python'" | |
if !MacOS::CLT.installed? and python_prefix.start_with? '/System/Library' | |
# For Xcode-only systems, the headers of system's python are inside of Xcode | |
args << "-DPYTHON_INCLUDE_DIR='#{MacOS.sdk_path}/System/Library/Frameworks/Python.framework/Versions/2.7/Headers'" | |
else | |
args << "-DPYTHON_INCLUDE_DIR='#{python_prefix}/Headers'" | |
end | |
else | |
python_lib = "#{python_prefix}/lib/lib#{which_python}" | |
if File.exists? "#{python_lib}.a" | |
args << "-DPYTHON_LIBRARY='#{python_lib}.a'" | |
else | |
args << "-DPYTHON_LIBRARY='#{python_lib}.dylib'" | |
end | |
args << "-DPYTHON_INCLUDE_DIR='#{python_prefix}/include/#{which_python}'" | |
end | |
args << "-DPYTHON_PACKAGES_PATH='#{lib}/#{which_python}/site-packages'" | |
args << '..' | |
mkdir 'macbuild' do | |
system 'cmake', *args | |
system "make" | |
system "make install" | |
end | |
end | |
def which_python | |
"python" + `python -c 'import sys;print(sys.version[:3])'`.strip | |
end | |
def site_package_dir | |
"lib/#{which_python}/site-packages" | |
end | |
def caveats; <<-EOS.undent | |
The OpenCV Python module will not work until you edit your PYTHONPATH like so: | |
export PYTHONPATH="#{HOMEBREW_PREFIX}/#{site_package_dir}:$PYTHONPATH" | |
To make this permanent, put it in your shell's profile (e.g. ~/.profile). | |
EOS | |
end | |
end |
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