Question about IM License with FFT

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jezzer

Question about IM License with FFT

Post by jezzer »

I've studied the licenses for IM and FFTW.

Am I correct in thinking that because FFTW is GPL'd, then my use of IM with FFTW would require me to make my code GPL'd whereas if I dont use FFTW [or any other GPL'd delegate library] then I can use IM freely for commercial purposes given that I provide suitable attribution ... as per the IM license (apache). If so how does IM avoid having to be GPL'd itself given that it has to be rebuilt from source to provide FFTW support.

Regards

J
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magick
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Re: Question about IM License with FFT

Post by magick »

It seems pretty straight forward to us. If you use ImageMagick, comply with the ImageMagick license. If you use FFTW, comply with the FFTW license. ImageMagick is not tainted by FFTW because it simply makes FFTW API calls. There is no FFTW source code within ImageMagick. See http://www.imagemagick.org/script/license.php for complying with the ImageMagick license and http://www.softwarefreedom.org/resource ... guide.html for how to comply with the GPL license.
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