[gimp] icons: put the recipe for the generated icons into a variable

[Michael Natterer <mitch src gnome org>]

commit 0c798520e6387562af338d2dcb08d4fd04be155d
Author: Michael Natterer <mitch gimp org>
Date:   Mon Dec 28 02:51:36 2015 +0100

    icons: put the recipe for the generated icons into a variable
    
    and use that variable instead of repeating the recipe for each icon size.

 icons/Symbolic-Inverted/Makefile.am |   95 +++++------------------------------
 1 files changed, 13 insertions(+), 82 deletions(-)
---
diff --git a/icons/Symbolic-Inverted/Makefile.am b/icons/Symbolic-Inverted/Makefile.am
index 1851f4a..2555dfb 100644
--- a/icons/Symbolic-Inverted/Makefile.am
+++ b/icons/Symbolic-Inverted/Makefile.am
@@ -25,8 +25,8 @@ include $(top_srcdir)/icons/Symbolic/icon-list.mk
 #     %.png: $(top_srcdir)/icons/Symbolic/%.png
 # But it doesn't. If someone knows how, feel free to fix it back into
 # a single rule.
-12/%.png: $(top_srcdir)/icons/Symbolic/12/%.png
-       mkdir -p `dirname $ `;
+
+MAKE_ICON = mkdir -p `dirname $ `; \
        $(GEGL) -x \
        "<gegl> \
          <node operation='gegl:invert-linear'></node> \
@@ -37,101 +37,32 @@ include $(top_srcdir)/icons/Symbolic/icon-list.mk
          </node> \
        </gegl>" -o $@
 
+12/%.png: $(top_srcdir)/icons/Symbolic/12/%.png
+       $(MAKE_ICON)
+
 16/%.png: $(top_srcdir)/icons/Symbolic/16/%.png
-       mkdir -p `dirname $ `;
-       $(GEGL) -x \
-       "<gegl> \
-         <node operation='gegl:invert-linear'></node> \
-         <node operation='gegl:load'> \
-           <params> \
-             <param name='path'>$(top_srcdir)/icons/Symbolic/$@</param> \
-           </params> \
-         </node> \
-       </gegl>" -o $@
+       $(MAKE_ICON)
 
 18/%.png: $(top_srcdir)/icons/Symbolic/18/%.png
-       mkdir -p `dirname $ `;
-       $(GEGL) -x \
-       "<gegl> \
-         <node operation='gegl:invert-linear'></node> \
-         <node operation='gegl:load'> \
-           <params> \
-             <param name='path'>$(top_srcdir)/icons/Symbolic/$@</param> \
-           </params> \
-         </node> \
-       </gegl>" -o $@
+       $(MAKE_ICON)
 
 20/%.png: $(top_srcdir)/icons/Symbolic/20/%.png
-       mkdir -p `dirname $ `;
-       $(GEGL) -x \
-       "<gegl> \
-         <node operation='gegl:invert-linear'></node> \
-         <node operation='gegl:load'> \
-           <params> \
-             <param name='path'>$(top_srcdir)/icons/Symbolic/$@</param> \
-           </params> \
-         </node> \
-       </gegl>" -o $@
+       $(MAKE_ICON)
 
 22/%.png: $(top_srcdir)/icons/Symbolic/22/%.png
-       mkdir -p `dirname $ `;
-       $(GEGL) -x \
-       "<gegl> \
-         <node operation='gegl:invert-linear'></node> \
-         <node operation='gegl:load'> \
-           <params> \
-             <param name='path'>$(top_srcdir)/icons/Symbolic/$@</param> \
-           </params> \
-         </node> \
-       </gegl>" -o $@
+       $(MAKE_ICON)
 
 24/%.png: $(top_srcdir)/icons/Symbolic/24/%.png
-       mkdir -p `dirname $ `;
-       $(GEGL) -x \
-       "<gegl> \
-         <node operation='gegl:invert-linear'></node> \
-         <node operation='gegl:load'> \
-           <params> \
-             <param name='path'>$(top_srcdir)/icons/Symbolic/$@</param> \
-           </params> \
-         </node> \
-       </gegl>" -o $@
+       $(MAKE_ICON)
 
 32/%.png: $(top_srcdir)/icons/Symbolic/32/%.png
-       mkdir -p `dirname $ `;
-       $(GEGL) -x \
-       "<gegl> \
-         <node operation='gegl:invert-linear'></node> \
-         <node operation='gegl:load'> \
-           <params> \
-             <param name='path'>$(top_srcdir)/icons/Symbolic/$@</param> \
-           </params> \
-         </node> \
-       </gegl>" -o $@
+       $(MAKE_ICON)
 
 48/%.png: $(top_srcdir)/icons/Symbolic/48/%.png
-       mkdir -p `dirname $ `;
-       $(GEGL) -x \
-       "<gegl> \
-         <node operation='gegl:invert-linear'></node> \
-         <node operation='gegl:load'> \
-           <params> \
-             <param name='path'>$(top_srcdir)/icons/Symbolic/$@</param> \
-           </params> \
-         </node> \
-       </gegl>" -o $@
+       $(MAKE_ICON)
 
 64/%.png: $(top_srcdir)/icons/Symbolic/64/%.png
-       mkdir -p `dirname $ `;
-       $(GEGL) -x \
-       "<gegl> \
-         <node operation='gegl:invert-linear'></node> \
-         <node operation='gegl:load'> \
-           <params> \
-             <param name='path'>$(top_srcdir)/icons/Symbolic/$@</param> \
-           </params> \
-         </node> \
-       </gegl>" -o $@
+       $(MAKE_ICON)
 
 all_icons = \
        $(icons12_DATA)         \