gnu: Add gmic.

* gnu/packages/image-processing.scm (gmic): New variable.

Signed-off-by: Marius Bakke <marius@gnu.org>

gnu/packages/image-processing.scm

@@ -9,6 +9,7 @@
 ;;; Copyright © 2018 Lprndn <guix@lprndn.info>
 ;;; Copyright © 2019 Efraim Flashner <efraim@flashner.co.il>
 ;;; Copyright © 2020 Vincent Legoll <vincent.legoll@gmail.com>
+;;; Copyright © 2020 Vinicius Monego <monego@posteo.net>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -487,6 +488,43 @@ quickly, especially on machines with more than one CPU core.  This is primarily
 due to its architecture which automatically parallelises the image workflows.")
     (license license:lgpl2.1+)))
 
+(define-public gmic
+  (package
+    (name "gmic")
+    (version "2.9.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://gmic.eu/files/source/gmic_"
+                           version ".tar.gz"))
+       (sha256
+        (base32 "13axx7nwchn6ysgpvlw3fib474q4nrwv3qn20g3q03ldid0xvjah"))))
+    (build-system cmake-build-system)
+    (arguments
+     `(#:tests? #f))                    ;there are no tests
+    (native-inputs
+     `(("pkg-config" ,pkg-config)))
+    (inputs
+     `(("curl" ,curl)
+       ("fftw" ,fftw)
+       ("graphicsmagick" ,graphicsmagick)
+       ("libjpeg-turbo" ,libjpeg-turbo)
+       ("libpng" ,libpng)
+       ("libtiff" ,libtiff)
+       ("libx11" ,libx11)
+       ;;("opencv" ,opencv) ;OpenCV is currently broken in the CI
+       ("openexr" ,openexr)
+       ("zlib" ,zlib)))
+    (home-page "https://gmic.eu/")
+    (synopsis "Full-featured framework for digital image processing")
+    (description "G'MIC is a full-featured framework for digital image
+processing.  It provides several user interfaces to convert / manipulate
+/ filter / visualize generic image datasets, ranging from 1D scalar
+signals to 3D+t sequences of multi-spectral volumetric images, hence
+including 2D color images.")
+    ;; Dual-licensed, either license applies.
+    (license (list license:cecill license:cecill-c))))
+
 (define-public nip2
   (package
     (name "nip2")