newer magick libraries, use pkg-config, add possibility to link with
graphicsmagick, fix for as-needed

--- dx-4.4.4.orig/src/exec/dxmods/_im_image.c
+++ dx-4.4.4/src/exec/dxmods/_im_image.c
@@ -329,7 +329,7 @@
             DestroyImageInfo(new_frame_info);
             DestroyImageInfo(image_info);
 #if MagickLibVersion > 0x0537
-            DestroyConstitute();
+            ConstituteComponentTerminus();
 #endif
              DXSetError(ERROR_INTERNAL, "reason = %s, description = %s",
                         image->exception.reason,
@@ -346,7 +346,7 @@
             DestroyImageInfo(new_frame_info);
             DestroyImageInfo(image_info);
 #if MagickLibVersion > 0x0537
-            DestroyConstitute();
+            ConstituteComponentTerminus();
 #endif
             DXErrorReturn( ERROR_INTERNAL , "out of memory allocating buffer _im_image.c");
         }
@@ -375,7 +375,7 @@
         DestroyImageInfo(image_info);
         DestroyImageInfo(new_frame_info);
 #if MagickLibVersion > 0x0537
-        DestroyConstitute();
+        ConstituteComponentTerminus();
 #endif
         
         DEBUGMESSAGE("back from DestroyImage");
@@ -491,7 +491,7 @@
         DestroyImage(image);
         DestroyImageInfo(image_info);
 #if MagickLibVersion > 0x0537
-        DestroyConstitute();
+        ConstituteComponentTerminus();
 #endif
     }
     return (OK);
--- dx-4.4.4.orig/configure.ac
+++ dx-4.4.4/configure.ac
@@ -799,7 +799,29 @@
 LIB_MAGICK=''
 if test "$with_magick" != 'no'
 then
-    AS_MESSAGE([checking for ImageMagick support ......])
+    found=0
+    static_lib="libGraphicsMagick.a"
+    PKG_CHECK_MODULES(GraphicsMagick, GraphicsMagick, [found=1], [found=0])
+    MAGICK_CFLAGS="$GraphicsMagick_CFLAGS"
+    MAGICK_LIBS="$GraphicsMagick_LIBS"
+    if test $found -eq 0
+    then
+        static_lib="libMagick.a"
+        PKG_CHECK_MODULES(ImageMagick, ImageMagick, [found=1], [found=0])
+        MAGICK_CFLAGS="$ImageMagick_CFLAGS"
+        MAGICK_LIBS="$ImageMagick_LIBS"
+    fi
+    if test $found -eq 1
+    then
+	CFLAGS="$CFLAGS $MAGICK_CFLAGS"
+dnl UNIQUIFY will remove duplicate library tokens leaving the last instance.
+	AC_UTILS_UNIQUIFY([$LIBS $MAGICK_LIBS], LIBS)
+	FMT_LIBS="$FMT_LIBS $static_lib"
+	AC_DEFINE(HAVE_LIBMAGICK, 1, [Define to 1 if you have the ImageMagick libraries])
+        have_magick='yes'
+dnl legacy checks installations without pkg-config
+    else
+    AS_MESSAGE([checking for ImageMagick support (no pkg-config) ......])
     AC_CHECK_PROG(HAVE_MC, Magick-config, yes, no)
 
     failed=0;
@@ -866,6 +888,7 @@
   fi
 fi
 fi
+fi
 
 AC_LANG([C++])
 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[int a = true;]])],
--- dx-4.4.4.orig/src/exec/dxmods/Makefile.am
+++ dx-4.4.4/src/exec/dxmods/Makefile.am
@@ -113,4 +113,5 @@
 	$(SOURCES6) \
 	$(SOURCES7)
 
+libDXMODS_la_LIBADD = @MAGICK_LIBS@
 @LOCALMAKE@