Fix compilation issues on linux 64 machines

crnlib/crn_math.h

@@ -56,7 +56,12 @@ namespace crnlib
 
       template<typename T> inline T square(T value) { return value * value; }
 
+#ifdef __GNUC__
+    #if CRNLIB_64BIT_POINTERS==0
       inline bool is_power_of_2(uint32 x) { return x && ((x & (x - 1U)) == 0U); }
+    #endif
+#endif
+
       inline bool is_power_of_2(uint64 x) { return x && ((x & (x - 1U)) == 0U); }
 
       template<typename T> inline T align_up_value(T x, uint alignment)
@@ -79,7 +84,9 @@ namespace crnlib
       {
          return align_up_value(x, alignment) - x;
       }
-		      
+
+#ifdef __GNUC__
+    #if CRNLIB_64BIT_POINTERS==0		      
 		// From "Hackers Delight"
       inline uint32 next_pow2(uint32 val)
       {
@@ -91,6 +98,8 @@ namespace crnlib
          val |= val >> 1;
          return val + 1;
       }
+    #endif
+#endif
 
       inline uint64 next_pow2(uint64 val)
       {

crnlib/crnlib.cpp

@@ -52,6 +52,7 @@ namespace crnlib
 } // namespace crnlib
 
 using namespace crnlib;
+using crnlib::uint; 
 
 const char* crn_get_format_string(crn_format fmt)
 {
@@ -456,4 +457,4 @@ bool crn_decompress_block(const void *pSrc_block, crn_uint32 *pDst_pixels_u32, c
    }
 
    return true;
-}
+}

inc/crn_decomp.h

@@ -374,7 +374,7 @@ namespace crnd
 
    const uint32 cIntBits = 32U;
 
-#ifdef _WIN64
+#if CRNLIB_64BIT_POINTERS
    typedef uint64 ptr_bits;
 #else
    typedef uint32 ptr_bits;