Rmagick Fails To Manipulate PNG
- by Tyler DeWitt
Following the Railscast episode on CarrierWave:
I installed ImageMagick on Mountain Lion via homebrew, exported the following path:
export PKG_CONFIG_PATH="/opt/local/lib/pkgconfig:$PKG_CONFIG_PATH"
Symlinked the following:
ln -s /usr/local/include/ImageMagick/wand /usr/local/include/wand
ln -s /usr/local/include/ImageMagick/magick /usr/local/include/magick
And installed rmagick via bundler.
In my uploader I have the following:
include CarrierWave::RMagick
version :thumb do
process :resize_to_limit => [85, 85]
end
Which creates thumbnails just fine, but not for png files. I've tried a handful of png images and it always fails with this error:
Failed to manipulate with rmagick, maybe it is not an image? Original Error: no decode delegate for this image format `<path>/public/uploads/tmp/20121022-2133-9885-3333/thumb_cat_vs_internet.png' @ error/constitute.c/ReadImage/544
jpeg images work just fine.
EDIT
identify -list format | grep -i png returns nothing, indicating the png decode delegate is probably missing. Now what?
