diff --git a/blockmapbuilder.cpp b/blockmapbuilder.cpp
index 5758019..3d51e2c 100644
--- a/blockmapbuilder.cpp
+++ b/blockmapbuilder.cpp
@@ -17,7 +17,6 @@
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
 */
-#include <malloc.h>
 #include <stdio.h>
 #include <string.h>
 
diff --git a/getopt.c b/getopt.c
index a24d94b..2c3ef3e 100644
--- a/getopt.c
+++ b/getopt.c
@@ -43,6 +43,7 @@ USA.  */
 #endif
 
 #include <stdio.h>
+#include <strings.h>
 
 /* Comment out all this code if we are using the GNU C Library, and are not
    actually compiling the library itself.  This code is part of the GNU C
diff --git a/getopt.h b/getopt.h
index e2cdb12..70aff2d 100644
--- a/getopt.h
+++ b/getopt.h
@@ -99,6 +99,7 @@ struct option
 #define optional_argument	2
 
 #if (defined (__STDC__) && __STDC__) || (defined (__cplusplus))
+#ifndef __APPLE__
 #ifdef __GNU_LIBRARY__
 /* Many other libraries have conflicting prototypes for getopt, with
    differences in the consts, in stdlib.h.  To avoid compilation
@@ -107,6 +108,7 @@ extern int getopt (int argc, char *const *argv, const char *shortopts);
 #else /* not __GNU_LIBRARY__ */
 extern int getopt ();
 #endif /* __GNU_LIBRARY__ */
+#endif
 extern int getopt_long (int argc, char *const *argv, const char *shortopts,
 		        const struct option *longopts, int *longind);
 extern int getopt_long_only (int argc, char *const *argv,
diff --git a/main.cpp b/main.cpp
index 191abd0..acbeb9d 100644
--- a/main.cpp
+++ b/main.cpp
@@ -500,6 +500,8 @@ static void ShowVersion ()
 		"-x86"
 #elif defined(__amd64__)
 		"-amd64"
+#elif defined(__ppc__)
+		"-ppc"
 #endif
 
 #elif defined(_MSC_VER)
diff --git a/nodebuild.cpp b/nodebuild.cpp
index a2b20f1..25d319f 100644
--- a/nodebuild.cpp
+++ b/nodebuild.cpp
@@ -20,7 +20,6 @@
 
 #include <stdlib.h>
 #include <assert.h>
-#include <malloc.h>
 #include <string.h>
 #include <stdio.h>
 #include <math.h>
diff --git a/nodebuild_utility.cpp b/nodebuild_utility.cpp
index e625d54..9da4abf 100644
--- a/nodebuild_utility.cpp
+++ b/nodebuild_utility.cpp
@@ -17,7 +17,6 @@
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
 */
-#include <malloc.h>
 #include <string.h>
 #include <stdio.h>
 
diff --git a/tarray.h b/tarray.h
index 654e368..c944124 100644
--- a/tarray.h
+++ b/tarray.h
@@ -37,7 +37,9 @@
 
 #include <stdlib.h>
 #include <assert.h>
+#ifndef __APPLE__
 #include <malloc.h>
+#endif
 #include <new>
 
 // TArray -------------------------------------------------------------------
diff --git a/zdbsp.h b/zdbsp.h
index 727bf9d..e7e319a 100644
--- a/zdbsp.h
+++ b/zdbsp.h
@@ -119,7 +119,7 @@ inline fixed_t DMulScale32 (fixed_t a, fixed_t b, fixed_t c, fixed_t d)
 
 #pragma warning (default: 4035)
 
-#elif defined(__GNUC__)
+#elif defined(__GNUC__) && defined(__i386__)
 
 #ifdef __clang__
 inline fixed_t Scale (fixed_t a, fixed_t b, fixed_t c)
@@ -231,8 +231,51 @@ inline fixed_t DMulScale32 (fixed_t a, fixed_t b, fixed_t c, fixed_t d)
 
 #endif
 
-// FIXME: No macros defined for big-endian machines.
-#define LittleShort(x)	(x)
-#define LittleLong(x)	(x)
+#ifdef __APPLE__
+#include <CoreFoundation/CoreFoundation.h>
+
+#define LittleShort(x)		CFSwapInt16LittleToHost(x)
+#define LittleLong(x)		CFSwapInt32LittleToHost(x)
+#else
+#ifdef __BIG_ENDIAN__
+
+// Swap 16bit, that is, MSB and LSB byte.
+// No masking with 0xFF should be necessary. 
+inline short LittleShort (short x)
+{
+	return (short)((((unsigned short)x)>>8) | (((unsigned short)x)<<8));
+}
+
+inline unsigned short LittleShort (unsigned short x)
+{
+	return (unsigned short)((x>>8) | (x<<8));
+}
+
+// Swapping 32bit.
+inline unsigned int LittleLong (unsigned int x)
+{
+	return (unsigned int)(
+						  (x>>24)
+						  | ((x>>8) & 0xff00)
+						  | ((x<<8) & 0xff0000)
+						  | (x<<24));
+}
+
+inline int LittleLong (int x)
+{
+	return (int)(
+				 (((unsigned int)x)>>24)
+				 | ((((unsigned int)x)>>8) & 0xff00)
+				 | ((((unsigned int)x)<<8) & 0xff0000)
+				 | (((unsigned int)x)<<24));
+}
+
+#else
+
+#define LittleShort(x)          (x)
+#define LittleLong(x)           (x)
+
+#endif // __BIG_ENDIAN__
+#endif // __APPLE__
 
 #endif //__ZDBSP_H__