no JPG support?

recluse8912 · Post by **recluse8912** » 2007-01-07T18:49:03-07:00

I'm getting the:
"no decode delegate for this image format"
when trying to resize a .JPG. after typing:
"identify -list format"
i noticed that .JPG/.JPEG don't show up at all. did i screw something up?

Post by **magick** » 2007-01-07T19:07:45-07:00

Chances are, when ImageMagick was built, the configure script did not validate the JPEG delegate library which is required to read/write JPEG images. Run the configure script again and look at the last 50 lines of output. It will probably say JPEG was not validated. Look at config.log for -ljpeg and identify the reason the library did not validate. Fix the problem and rerun the configure script until JPEG is validated. Now build and install.

recluse8912 · Post by **recluse8912** » 2007-01-07T19:13:30-07:00

it looks like jpeglib.h can't be found. is that something that's included with ImageMagick or do I have to obtain that myself?

Post by **anthony** » 2007-01-07T21:09:17-07:00

You need to install the JPEG library 'devel' files. That is the files needed to build against the library, and not just enough for pre-compiled programs to use the library.