linux - ImageMagick -liquid-rescale option error -

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i want use seam carving, , found imagemagick maybe choice.
install imagemagick source this indicate.

my problem is: when type command
convert logo_trimmed.jpg -liquid-rescale 75x100%\! logo_lqr.jpg
gives following error:
convert: delegate library support not built-in 'logo_trimmed.jpg' (lqr) @ error/resize.c/liquidrescaleimage/1900.

i thought may because lack of liblqr support, go liquid rescale install it
, make uninstall imagemagick , install again.
however, problem remains same.

can tell me how make convert -liquid-rescale works?
hint.

after installing liblqr, have install imagemagick running configure prior make, see build instructions here:

http://www.imagemagick.org/script/install-source.php#unix

if don't run configure not pick new library.

and after you've compiled imagemagick check lqr delegate library installed running:

convert -list configure | grep -i "delegates"

and seeing lqr listed there.


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