Fix FTBFS on redefinitions in chalk/sdk/kis_integer_maths.h

Signed-off-by: Slávek Banko <slavek.banko@...>
(cherry picked from commit cbc1062ce2a32d52e55445d303b1adb4078f87ec)

diff --git a/chalk/colorspaces/gray_u16/kis_gray_u16_colorspace.cc b/chalk/colorspaces/gray_u16/kis_gray_u16_colorspace.cc
index b24c48b..43bdf40 100644
--- a/chalk/colorspaces/gray_u16/kis_gray_u16_colorspace.cc
+++ b/chalk/colorspaces/gray_u16/kis_gray_u16_colorspace.cc
@@ -404,8 +404,8 @@
             TQ_UINT16 srcColor = src[channel];
             TQ_UINT16 dstColor = dst[channel];
 
-            srcColor = kMin(((UINT16_MAX - dstColor) * (UINT16_MAX + 1u)) / (srcColor + 1u), UINT16_MAX);
-            srcColor = kClamp(UINT16_MAX - srcColor, 0u, UINT16_MAX);
+            srcColor = kMin(((UINT16_MAX - dstColor) * (UINT16_MAX + 1u)) / (srcColor + 1u), (unsigned)UINT16_MAX);
+            srcColor = kClamp((unsigned)UINT16_MAX - srcColor, 0u, (unsigned)UINT16_MAX);
 
             TQ_UINT16 newColor = UINT16_BLEND(srcColor, dstColor, srcBlend);
 
diff --git a/chalk/colorspaces/gray_u8/kis_gray_colorspace.cc b/chalk/colorspaces/gray_u8/kis_gray_colorspace.cc
index 7968e31..989cc2c 100644
--- a/chalk/colorspaces/gray_u8/kis_gray_colorspace.cc
+++ b/chalk/colorspaces/gray_u8/kis_gray_colorspace.cc
@@ -746,8 +746,8 @@
                     TQ_UINT8 srcColor = src[channel];
                     TQ_UINT8 dstColor = dst[channel];
 
-                    srcColor = kMin(((UINT8_MAX - dstColor) * (UINT8_MAX + 1)) / (srcColor + 1), UINT8_MAX);
-                    srcColor = kClamp(UINT8_MAX - srcColor, 0u, UINT8_MAX);
+                    srcColor = kMin(((UINT8_MAX - dstColor) * (UINT8_MAX + 1u)) / (srcColor + 1u), (unsigned)UINT8_MAX);
+                    srcColor = kClamp((unsigned)UINT8_MAX - srcColor, 0u, (unsigned)UINT8_MAX);
 
                     TQ_UINT8 newColor = UINT8_BLEND(srcColor, dstColor, srcBlend);
 
diff --git a/chalk/colorspaces/rgb_u16/kis_rgb_u16_colorspace.cc b/chalk/colorspaces/rgb_u16/kis_rgb_u16_colorspace.cc
index 75aa664..40198c9 100644
--- a/chalk/colorspaces/rgb_u16/kis_rgb_u16_colorspace.cc
+++ b/chalk/colorspaces/rgb_u16/kis_rgb_u16_colorspace.cc
@@ -444,8 +444,8 @@
             TQ_UINT16 srcColor = src[channel];
             TQ_UINT16 dstColor = dst[channel];
 
-            srcColor = kMin(((UINT16_MAX - dstColor) * (UINT16_MAX + 1u)) / (srcColor + 1u), UINT16_MAX);
-            srcColor = kClamp(UINT16_MAX - srcColor, 0u, UINT16_MAX);
+            srcColor = kMin(((UINT16_MAX - dstColor) * (UINT16_MAX + 1u)) / (srcColor + 1u), (unsigned)UINT16_MAX);
+            srcColor = kClamp((unsigned)UINT16_MAX - srcColor, 0u, (unsigned)UINT16_MAX);
 
             TQ_UINT16 newColor = UINT16_BLEND(srcColor, dstColor, srcBlend);
 
diff --git a/chalk/sdk/kis_integer_maths.h b/chalk/sdk/kis_integer_maths.h
index c8db9ae..bd52c34 100644
--- a/chalk/sdk/kis_integer_maths.h
+++ b/chalk/sdk/kis_integer_maths.h
@@ -19,17 +19,38 @@
 #ifndef KIS_INTEGER_MATHS_H
 #define KIS_INTEGER_MATHS_H
 
+#include <config.h>
+#if defined(HAVE_STDINT_H)
+#include <stdint.h>
+#endif
+
+#if !defined(UINT8_MAX)
 #define UINT8_MAX 255u
+#endif
+#if !defined(UINT8_MIN)
 #define UINT8_MIN 0u
+#endif
 
+#if !defined(UINT16_MAX)
 #define UINT16_MAX 65535u
+#endif
+#if !defined(UINT16_MIN)
 #define UINT16_MIN 0u
+#endif
 
+#if !defined(UINT32_MAX)
 #define UINT32_MAX (4294967295u)
+#endif
+#if !defined(UINT32_MIN)
 #define UINT32_MIN 0u
+#endif
 
+#if !defined(INT16_MAX)
 #define INT16_MAX 32767
+#endif
+#if !defined(INT16_MIN)
 #define INT16_MIN -32768
+#endif
 
 /// take a and scale it up by 256*b/255
 inline uint UINT8_SCALEBY(uint a, uint b)