brew install -v opencv

brew_install_opencv_log.txt

kdj@luna ~$ brew install -v opencv
/usr/bin/env python -c import numpy
==> Downloading http://sourceforge.net/projects/opencvlibrary/files/opencv-unix/2.3.1/OpenCV-2.3.1a.tar.bz2
Already downloaded: /Users/kdj/Library/Caches/Homebrew/opencv-2.3.1a.tar.bz2
/usr/bin/tar xf /Users/kdj/Library/Caches/Homebrew/opencv-2.3.1a.tar.bz2
==> Patching
/usr/bin/patch -f -p1 -i 000-homebrew.diff
patching file modules/highgui/src/grfmt_exr.hpp
patching file modules/flann/include/opencv2/flann/any.h
patching file modules/flann/include/opencv2/flann/defines.h
patching file modules/flann/include/opencv2/flann/any.h
patching file modules/flann/include/opencv2/flann/lsh_index.h
==> cmake . -DCMAKE_INSTALL_PREFIX='/usr/local/Cellar/opencv/2.3.1a' -DCMAKE_BUILD_TYPE=None -Wno-dev -DPYTHON_LIBRARY='/System/Library/Frameworks/Python.framework/Versions/2.7/Python' -DPYTHON_INCLUDE_DIR='/System/Library/Frameworks/Python.framework/Versions/2.7/Headers' -DPYTHON_PACKAGES_PATH='/usr/local/Cellar/opencv/2.3.1a/lib/python2.7/site-packages'
cmake . -DCMAKE_INSTALL_PREFIX='/usr/local/Cellar/opencv/2.3.1a' -DCMAKE_BUILD_TYPE=None -Wno-dev -DPYTHON_LIBRARY='/System/Library/Frameworks/Python.framework/Versions/2.7/Python' -DPYTHON_INCLUDE_DIR='/System/Library/Frameworks/Python.framework/Versions/2.7/Headers' -DPYTHON_PACKAGES_PATH='/usr/local/Cellar/opencv/2.3.1a/lib/python2.7/site-packages'
-- The C compiler identification is Clang 3.1.0
-- The CXX compiler identification is Clang 3.1.0
-- Check for working C compiler: /usr/bin/clang
-- Check for working C compiler: /usr/bin/clang -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/clang++
-- Check for working CXX compiler: /usr/bin/clang++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Extracting svn version, please wait...
-- SVNVERSION: exported
-- checking for module 'libavcodec'
--   package 'libavcodec' not found
-- checking for module 'libavformat'
--   package 'libavformat' not found
-- checking for module 'libavutil'
--   package 'libavutil' not found
-- checking for module 'libswscale'
--   package 'libswscale' not found
-- Looking for libavformat/avformat.h
-- Looking for libavformat/avformat.h - not found
-- Looking for ffmpeg/avformat.h
-- Looking for ffmpeg/avformat.h - not found
-- checking for module 'libdc1394-2'
--   package 'libdc1394-2' not found
-- checking for module 'libdc1394'
--   package 'libdc1394' not found
-- Found ZLIB: /usr/lib/libz.dylib (found version "1.2.5") 
-- Found PNG: /usr/X11R6/lib/libpng.dylib (found version "1.2.47") 
-- Looking for /Library/Frameworks/old-Mono.framework/Headers/png.h
-- Looking for /Library/Frameworks/old-Mono.framework/Headers/png.h - found
-- Looking for /Library/Frameworks/old-Mono.framework/Headers/libpng/png.h
-- Looking for /Library/Frameworks/old-Mono.framework/Headers/libpng/png.h - not found
-- Found TIFF: /usr/local/lib/libtiff.dylib (found version "3.8.2") 
-- Found JPEG: /usr/local/lib/libjpeg.dylib  
-- Found Jasper: /usr/local/lib/libjasper.dylib (found version "1.900.1") 
-- Found PythonInterp: /usr/bin/python (found version "2.7.1") 
-- Found PythonLibs: /System/Library/Frameworks/Python.framework/Versions/2.7/Python (found version "2.7.1") 
--     Use NumPy headers from: /System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/numpy/core/include
Traceback (most recent call last):
  File "<string>", line 1, in <module>
ImportError: No module named sphinx
CUDA_TOOLKIT_ROOT_DIR not found or specified
-- Could NOT find CUDA (missing:  CUDA_TOOLKIT_ROOT_DIR CUDA_NVCC_EXECUTABLE CUDA_INCLUDE_DIRS CUDA_CUDART_LIBRARY) (Required is at least version "4.0")
-- Parsing 'cvconfig.h.cmake'
-- 
-- General configuration for opencv 2.3.1 =====================================
-- 
--     Built as dynamic libs?:     YES
--     Compiler:                   /usr/bin/clang++
--     C++ flags (Release):        -Os -w -pipe -march=native -Qunused-arguments    -O3 -DNDEBUG  
--     C++ flags (Debug):          -Os -w -pipe -march=native -Qunused-arguments    -g  
--     Linker flags (Release):      
--     Linker flags (Debug):        
-- 
--   GUI: 
--     Cocoa:                      YES
-- 
--   Media I/O: 
--     ZLib:                       YES
--     JPEG:                       TRUE
--     PNG:                        TRUE
--     TIFF:                       TRUE
--     JPEG 2000:                  TRUE
--     OpenEXR:                    NO
--     OpenNI:                     NO
--     OpenNI PrimeSensor Modules: NO
--     XIMEA:                      NO
-- 
--   Video I/O:                    QTKit
-- 
--   Other third-party libraries:
--     Use IPP:                    NO
--     Use TBB:                    NO
--     Use ThreadingFramework:     NO
--     Use Cuda:                   NO
--     Use Eigen:                  NO
-- 
--   Interfaces:
--     Python:                     YES
--     Python interpreter:         /usr/bin/python -B (ver 2.7)
--     Python numpy:               YES
--     Java:                       NO
-- 
--   Documentation:
--     Sphinx:                     NO
--     PdfLaTeX compiler:          NO
--     Build Documentation:        NO
-- 
--   Tests and samples:
--     Tests:                      YES
--     Examples:                   NO
-- 
--   Install path:                 /usr/local/Cellar/opencv/2.3.1a
-- 
--   cvconfig.h is in:             /tmp/homebrew-opencv-2.3.1a-d56K/OpenCV-2.3.1
-- -----------------------------------------------------------------
-- 
CMake Warning at CMakeLists.txt:1755 (message):
  The source directory is the same as binary directory.  "make clean" may
  damage the source tree


-- Configuring done
-- Generating done
-- Build files have been written to: /tmp/homebrew-opencv-2.3.1a-d56K/OpenCV-2.3.1
==> make
make 
Scanning dependencies of target opencv_core
[  1%] [  1%] [  1%] [  1%] [  1%] [  2%] [  2%] [  2%] Building CXX object modules/core/CMakeFiles/opencv_core.dir/src/arithm.o
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Linking CXX shared library ../../lib/libopencv_core.dylib
[  5%] Built target opencv_core
Scanning dependencies of target opencv_flann
Scanning dependencies of target opencv_ts
Scanning dependencies of target opencv_ml
Scanning dependencies of target opencv_imgproc
[  6%] [  6%] [  6%] [  6%] [  6%] [  7%] Building CXX object modules/flann/CMakeFiles/opencv_flann.dir/src/precomp.o
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[ 21%] Built target opencv_imgproc
Scanning dependencies of target opencv_video
Scanning dependencies of target opencv_highgui
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Linking CXX shared library ../../lib/libopencv_video.dylib
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Linking CXX shared library ../../lib/libopencv_highgui.dylib
Undefined symbols for architecture x86_64:
  "_png_set_gray_1_2_4_to_8", referenced from:
      cv::PngDecoder::readData(cv::Mat&) in grfmt_png.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make[2]: *** [lib/libopencv_highgui.2.3.1.dylib] Error 1
make[1]: *** [modules/highgui/CMakeFiles/opencv_highgui.dir/all] Error 2
make: *** [all] Error 2
CMakeCache.txt was copied to /Users/kdj/Library/Logs/Homebrew
==> Exit Status: 2
https://github.com/mxcl/master/blob/master/Library/Formula/opencv.rb#L78
==> Build Environment
CPU: 8-core 64-bit sandybridge
MacOS: 10.7.3-x86_64
Xcode: 4.3.2
CC: /usr/bin/clang
CXX: /usr/bin/clang++ => /usr/bin/clang
LD: /usr/bin/clang
CFLAGS: -Os -w -pipe -march=native -Qunused-arguments
CXXFLAGS: -Os -w -pipe -march=native -Qunused-arguments
MAKEFLAGS: -j8
Error: Failed executing: make (opencv.rb:78)
These existing issues may help you:
    https://github.com/mxcl/homebrew/issues/10862
Otherwise, please report the bug:
    https://github.com/mxcl/homebrew/wiki/reporting-bugs