opencv.rb

require 'formula'

class Opencv < Formula
  homepage 'http://opencv.org/'
  url 'https://github.com/Itseez/opencv/archive/2.4.7.1.tar.gz'
  sha1 'b6b0dd72356822a482ca3a27a7a88145aca6f34c'

  option '32-bit'
  option 'with-qt',  'Build the Qt4 backend to HighGUI'
  option 'with-tbb', 'Enable parallel code in OpenCV using Intel TBB'
  option 'without-opencl', 'Disable gpu code in OpenCV using OpenCL'

  option :cxx11

  depends_on 'cmake' => :build
  depends_on 'pkg-config' => :build
  depends_on 'numpy' => :python
  depends_on :python

  depends_on 'eigen'   => :optional
  depends_on 'libtiff' => :optional
  depends_on 'jasper'  => :optional
  depends_on 'tbb'     => :optional
  depends_on 'qt'      => :optional
  depends_on 'openni'  => :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.
  depends_on 'ffmpeg' => :optional

  def patches
    # Fixes Undefined symbols for architecture x86_64:
    #   "_faacEncClose", referenced from:
    #   etc. linking issues
    # From: http://tech.enekochan.com/2012/07/27/install-opencv-2-4-2-with-ffmpeg-support-in-mac-os-x-10-8/
    [
      "https://gist.github.com/randvoorhies/6887471/raw"
    ]
  end

  def install
    ENV.cxx11 if build.cxx11?

    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
      -DPYTHON_LIBRARY='#{%x(python-config --prefix).chomp}/lib/libpython2.7.dylib'
      -DPYTHON_INCLUDE_DIR=/usr/local/Cellar/python/2.7.6/Frameworks/Python.framework/Versions/2.7/include/python2.7
      -DPYTHON_LIBRARY=/usr/local/Cellar/python/2.7.6/Frameworks/Python.framework/Versions/2.7/lib/libpython2.7.dylib
      -DPYTHON_EXECUTABLE=/usr/local/bin/python
    ]

    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_OPENNI=ON' if build.with? 'openni'
    # OpenCL 1.1 is required, but Snow Leopard and older come with 1.0
    args << '-DWITH_OPENCL=OFF' if build.without? 'opencl' or MacOS.version < :lion
    args << '-DWITH_FFMPEG=OFF' unless build.with? 'ffmpeg'

    if ENV.compiler == :clang and !build.bottle?
      args << '-DENABLE_SSSE3=ON' if Hardware::CPU.ssse3?
      args << '-DENABLE_SSE41=ON' if Hardware::CPU.sse4?
      args << '-DENABLE_SSE42=ON' if Hardware::CPU.sse4_2?
      args << '-DENABLE_AVX=ON' if Hardware::CPU.avx?
    end

    mkdir 'macbuild' do
      system 'cmake', '..', *args
      system "make"
      system "make install"
    end
  end
end
# If openni was installed using homebrew, look for it on the proper path
__END__
diff --git a/cmake/OpenCVFindOpenNI.cmake b/cmake/OpenCVFindOpenNI.cmake
index 7541868..f1455e8 100644
--- a/cmake/OpenCVFindOpenNI.cmake
+++ b/cmake/OpenCVFindOpenNI.cmake
@@ -26,8 +26,8 @@ if(WIN32)
         find_library(OPENNI_LIBRARY "OpenNI64" PATHS $ENV{OPEN_NI_LIB64} DOC "OpenNI library")
     endif()
 elseif(UNIX OR APPLE)
-    find_file(OPENNI_INCLUDES "XnCppWrapper.h" PATHS "/usr/include/ni" "/usr/include/openni" DOC "OpenNI c++ interface header")
-    find_library(OPENNI_LIBRARY "OpenNI" PATHS "/usr/lib" DOC "OpenNI library")
+    find_file(OPENNI_INCLUDES "XnCppWrapper.h" PATHS "HOMEBREW_PREFIX/include/ni" "/usr/include/ni" "/usr/include/openni" DOC "OpenNI c++ interface header")
+    find_library(OPENNI_LIBRARY "OpenNI" PATHS "HOMEBREW_PREFIX/lib" "/usr/lib" DOC "OpenNI library")
 endif()

 if(OPENNI_LIBRARY AND OPENNI_INCLUDES)