# See https://bugs.gentoo.org/628688 for further info and
# development discussion about this patch.
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -17,7 +17,18 @@ else ()
     find_package(Qt5 COMPONENTS Core Gui Network Widgets LinguistTools REQUIRED)
 endif()
 
-find_package(ImageMagick REQUIRED COMPONENTS Magick++ MagickWand MagickCore)
+find_package(ImageMagick COMPONENTS Magick++ MagickWand MagickCore)
+if (NOT ImageMagick_FOUND)
+    set(ImageMagick_INCLUDE_DIRS "GENTOO_INCLUDE/GraphicsMagick")
+    set(ImageMagick_Magick++_INCLUDE_DIRS "GENTOO_INCLUDE/GraphicsMagick/Magick++")
+    set(ImageMagick_MagickCore_INCLUDE_DIRS "GENTOO_INCLUDE/GraphicsMagick/magic")
+    set(ImageMagick_LIBRARY "GENTOO_LIB/libGraphicsMagick.so")
+    set(ImageMagick_Magick++_LIBRARY "GENTOO_LIB/libGraphicsMagick++.so")
+    set(ImageMagick_MagickCore_LIBRARY "GENTOO_LIB/libGraphicsMagick.so")
+    set(ImageMagick_MagickWand_LIBRARY "GENTOO_LIB/libGraphicsMagickWand.so")
+    set(ImageMagick_MagickWand_INCLUDE_DIRS "GENTOO_INCLUDE/GraphicsMagick/wand")
+    set(ImageMagick_LIBRARIES ${ImageMagick_LIBRARY} ${ImageMagick_Magick++_LIBRARY} ${ImageMagick_MagickCore_LIBRARY} ${ImageMagick_MagickWand_LIBRARY})
+endif ()
 
 set(converseen_SOURCES
     src/main.cpp
--- a/src/converter.cpp
+++ b/src/converter.cpp
@@ -290,8 +290,14 @@ bool Converter::writeImage(Image &my_image, const QString &format, const int &qu
 
     error_status = "";
 
+/*  Workaround to compile with GraphicsMagick:
+    GraphicsMagick "MagickLibVersion" is greater that 0x100000
+    e.g. GraphicsMagick-1.3.25 has "MagickLibVersion=0x181501"
+    or GraphicsMagick-1.3.26 has "MagickLibVersion=0x191600" */
 #if MagickLibVersion < 0x700
     hasTransparency = my_image.matte();
+#elif MagickLibVersion > 0x100000
+    hasTransparency = my_image.matte();
 #else
     hasTransparency = my_image.alpha();
 #endif
@@ -349,6 +355,8 @@ Image Converter::convertPDFtoImage(Image &my_image)
     
 #if MagickLibVersion < 0x700
     ximage.antiAlias(true);
+#elif MagickLibVersion > 0x100000
+    ximage.antiAlias(true);
 #else
     ximage.textAntiAlias(true);
 #endif
--- a/src/globals.h
+++ b/src/globals.h
@@ -32,8 +32,14 @@
 using namespace Magick;
 using namespace std;

+/*  Workaround to compile with GraphicsMagick:
+    GraphicsMagick "MagickLibVersion" is greater that 0x100000
+    e.g. GraphicsMagick-1.3.25 has "MagickLibVersion=0x181501"
+    or GraphicsMagick-1.3.26 has "MagickLibVersion=0x191600" */
 #if MagickLibVersion < 0x700
     typedef FilterTypes IMFilterType;
+#elif MagickLibVersion > 0x100000
+    typedef FilterTypes IMFilterType;
 #else
     typedef FilterType IMFilterType;
 #endif
--- a/src/formats.cpp
+++ b/src/formats.cpp
@@ -174,6 +174,12 @@ bool Formats::isVideo(list<CoderInfo>::iterator entry)
     QStringList videoFormats(QStringList() << "3G2" << "3GP" << "APNG" << "AVI" << "FLV" << "M2V" << "M4V" << "MKV" << "MOV" << "MP4" << "MPEG" << "MPG" << "WEBM" << "WMV");
 
     return videoFormats.contains(currFormat);
+#elif MagickLibVersion > 0x100000
+    // Support for ImageMagick-6. This will be removed sooner as Linux distros drop the support!
+    QString currFormat = QString::fromStdString(entry->name());
+    QStringList videoFormats(QStringList() << "3G2" << "3GP" << "APNG" << "AVI" << "FLV" << "M2V" << "M4V" << "MKV" << "MOV" << "MP4" << "MPEG" << "MPG" << "WEBM" << "WMV");
+
+     return videoFormats.contains(currFormat);
 #else
     return (QString::fromStdString(entry->module()) == "VIDEO") ? true : false;
 #endif