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List:       kde-commits
Subject:    kdemultimedia/mpeglib/lib/util/render/dither2YUV
From:       Adrian Schroeter <adrian () suse ! de>
Date:       2003-08-25 6:34:04
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CVS commit by adrian: 

fix compiler with gcc 3.3.1 and later. It optimise too much and drop
"unused" symbols, which are only used in asm calls.


  M +19 -11    rgb2yuvdefs.h   1.2


--- kdemultimedia/mpeglib/lib/util/render/dither2YUV/rgb2yuvdefs.h  #1.1:1.2
@@ -19,4 +19,12 @@
 #define __RGB2YUVDEFS_H
 
+/* gcc 3.3.1 and later optimise the "not used" (only in asm code)
+   symbols away. So we need to mark them as used. */
+#if __GNUC_PREREQ (3,1)
+# define __attribute_used__ __attribute__ ((__used__))
+#else
+# define __attribute_used__ 
+#endif
+
 // hicolor mode (16 bit) with r(5) g(6) b(5) bits (reverse order b, g, r)
 #define RED(rgb)      (unsigned char) ((rgb) << 3)
@@ -41,19 +49,19 @@
 #define V_RGB(R,G,B) ((( V_R * (R) + V_G * (G) + V_B * (B)) >> YUV_SHIFT) + 128) 
 
-static unsigned char CLEARX[8]  = { 255, 0, 255, 0, 255, 0, 255, 0 };
-static short ZEROSX[4]  = { 0, 0, 0, 0 };
+static unsigned char __attribute_used__ CLEARX[8]  = { 255, 0, 255, 0, 255, 0, 255, 0 };
+static short __attribute_used__ ZEROSX[4]  = { 0, 0, 0, 0 };
 
-static short OFFSETDX[4] = { 0, 64, 0, 64 };
-static short OFFSETWX[4] = { 128, 0, 128, 0 };
-static short OFFSETBX[4] = { 128, 128, 128, 128 };
+static short __attribute_used__ OFFSETDX[4] = { 0, 64, 0, 64 };
+static short __attribute_used__ OFFSETWX[4] = { 128, 0, 128, 0 };
+static short __attribute_used__ OFFSETBX[4] = { 128, 128, 128, 128 };
 
-static short YR0GRX[4] = { Y_R, Y_G, 0, Y_R };
-static short YBG0BX[4] = { Y_B, 0, Y_G, Y_B };
+static short __attribute_used__ YR0GRX[4] = { Y_R, Y_G, 0, Y_R };
+static short __attribute_used__ YBG0BX[4] = { Y_B, 0, Y_G, Y_B };
 
-static short UR0GRX[4] = { U_R, U_G, 0, U_R };
-static short UBG0BX[4] = { U_B, 0, U_G, U_B };
+static short __attribute_used__ UR0GRX[4] = { U_R, U_G, 0, U_R };
+static short __attribute_used__ UBG0BX[4] = { U_B, 0, U_G, U_B };
 
-static short VR0GRX[4] = { V_R, V_G, 0, V_R };
-static short VBG0BX[4] = { V_B, 0, V_G, V_B };
+static short __attribute_used__ VR0GRX[4] = { V_R, V_G, 0, V_R };
+static short __attribute_used__ VBG0BX[4] = { V_B, 0, V_G, V_B };
  
 #endif


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