convert does nothing - issue with cyglcms2-2 dll?

[Katriel Friedman <kfriedman at poverty-action dot org>]

Hi Cygwin List,

I'm running Windows 7, 64 bit, with Cygwin 64-bit installed from the 2.871
installer. The Imagemagick "convert" command returns the prompt
immediately, even when followed by gibberish, e.g. "convert adsfasdf". I
first observed the problem with Imagemagick 6.9.1.3-3. I tried
uninstalling and reinstalling Imagemagick, and restarting Cygwin, and the
problem remained. I also tried downgrading to 6.7.6.3-4, and the problem
still remained.

When I start convert.exe directly from windows Explorer I get the pop-up
error "the procedure entry point cmsCreateContext could not be located in
the dynamic link library cyglcms2-2.dll". I also tried reinstalling
liblcms2-2 to no avail.

I know in the past this problem has occurred because of missing XOrg DLLs
(https://www.cygwin.com/ml/cygwin-xfree/2006-11/msg00001.html) but I'm not
sure where to look for those DLLs now.

Many thanks,
Katriel

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