gnu: Add devil.

* gnu/packages/image.scm (devil): New variable.
* gnu/packages/patches/devil-fix-libpng.patch: New file.
* gnu-system.am (dist_patch_DATA): Add it.

gnu-system.am

@@ -433,6 +433,7 @@ dist_patch_DATA =						\
   gnu/packages/patches/cursynth-wave-rand.patch			\
   gnu/packages/patches/dbus-helper-search-path.patch		\
   gnu/packages/patches/dealii-p4est-interface.patch		\
+  gnu/packages/patches/devil-fix-libpng.patch			\
   gnu/packages/patches/diffutils-gets-undeclared.patch		\
   gnu/packages/patches/dfu-programmer-fix-libusb.patch		\
   gnu/packages/patches/doxygen-test.patch			\

gnu/packages/image.scm

@@ -666,3 +666,55 @@ channels.")
     (description
      "Libmng is the MNG (Multiple-image Network Graphics) reference library.")
     (license license:bsd-3)))
+
+(define-public devil
+  (package
+    (name "devil")
+    (version "1.7.8")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append "http://downloads.sourceforge.net/openil/"
+                                  "DevIL-" version ".tar.gz"))
+              (sha256
+               (base32
+                "1zd850nn7nvkkhasrv7kn17kzgslr5ry933v6db62s4lr0zzlbv8"))
+              ;; Backported from upstream:
+              ;; https://github.com/DentonW/DevIL/commit/724194d7a9a91221a564579f64bdd6f0abd64219.patch
+              (patches (list (search-patch "devil-fix-libpng.patch")))
+              (modules '((guix build utils)))
+              (snippet
+               ;; Fix old lcms include directives and lib flags.
+               '(substitute* '("configure" "src-IL/src/il_profiles.c")
+                  (("-llcms") "-llcms2")
+                  (("lcms/lcms\\.h") "lcms2/lcms2.h")
+                  (("lcms\\.h") "lcms2.h")))))
+    (build-system gnu-build-system)
+    (arguments
+     '(#:configure-flags '("--enable-ILUT=yes") ; build utility library
+       #:phases
+       (modify-phases %standard-phases
+         (add-before 'check 'fix-tests
+           (lambda* (#:key inputs #:allow-other-keys)
+             ;; Fix hard-coded /bin/bash reference.
+             (substitute* '("test/Makefile")
+               (("TESTS_ENVIRONMENT = /bin/bash")
+                (string-append "TESTS_ENVIRONMENT = "
+                               (assoc-ref inputs "bash")
+                               "/bin/bash")))
+             #t)))))
+    (native-inputs
+     `(("pkg-config" ,pkg-config)))
+    (inputs
+     `(("lcms" ,lcms)
+       ("libjpeg" ,libjpeg)
+       ("libmng" ,libmng)
+       ("libpng" ,libpng)
+       ("libtiff" ,libtiff)
+       ("openexr" ,openexr)
+       ("zlib" ,zlib)))
+    (synopsis "Library for manipulating many image formats")
+    (description "Developer's Image Library (DevIL) is a library to develop
+applications with support for many types of images.  DevIL can load, save,
+convert, manipulate, filter and display a wide variety of image formats.")
+    (home-page "http://openil.sourceforge.net")
+    (license license:lgpl2.1+)))

gnu/packages/patches/devil-fix-libpng.patch

@@ -0,0 +1,36 @@
+From 724194d7a9a91221a564579f64bdd6f0abd64219 Mon Sep 17 00:00:00 2001
+From: Noah Mayr <max96at@gmail.com>
+Date: Sun, 1 Mar 2015 10:10:56 +0100
+Subject: [PATCH] Fixed deprecated libpng API usage.
+
+---
+ src-IL/src/il_icon.c | 2 +-
+ src-IL/src/il_png.c  | 4 ++--
+ 2 files changed, 3 insertions(+), 3 deletions(-)
+
+diff --git a/src-IL/src/il_icon.c b/src-IL/src/il_icon.c
+index 2ccb1a3..fd9475d 100644
+--- a/src-IL/src/il_icon.c
++++ b/src-IL/src/il_icon.c
+@@ -525,7 +525,7 @@ ILboolean ico_readpng_get_image(ICOIMAGE *Icon, ILdouble display_exponent)
+
+ 	// Expand low-bit-depth grayscale images to 8 bits
+ 	if (ico_color_type == PNG_COLOR_TYPE_GRAY && bit_depth < 8) {
+-		png_set_gray_1_2_4_to_8(ico_png_ptr);
++		png_set_expand_gray_1_2_4_to_8(ico_png_ptr);
+ 	}
+
+ 	// Expand RGB images with transparency to full alpha channels
+diff --git a/src-IL/src/il_png.c b/src-IL/src/il_png.c
+index da9517d..2866508 100644
+--- a/src-IL/src/il_png.c
++++ b/src-IL/src/il_png.c
+@@ -277,7 +277,7 @@ ILboolean readpng_get_image(ILdouble display_exponent)
+
+ 	// Expand low-bit-depth grayscale images to 8 bits
+ 	if (png_color_type == PNG_COLOR_TYPE_GRAY && bit_depth < 8) {
+-		png_set_gray_1_2_4_to_8(png_ptr);
++		png_set_expand_gray_1_2_4_to_8(png_ptr);
+ 	}
+
+ 	// Expand RGB images with transparency to full alpha channels