diff --git a/code/qcommon/vm_armv7l.c b/code/qcommon/vm_armv7l.c
index 8f2bd8ce..acee582f 100644
--- a/code/qcommon/vm_armv7l.c
+++ b/code/qcommon/vm_armv7l.c
@@ -30,6 +30,8 @@ http://www.heyrick.co.uk/armwiki/Category:Opcodes
 ARMv7-A_ARMv7-R_DDI0406_2007.pdf
 */
 
+#ifdef __arm__
+
 #include <sys/types.h>
 #include <sys/mman.h>
 #include <sys/time.h>
@@ -1220,3 +1222,5 @@ int VM_CallCompiled(vm_t *vm, int *args)
 
 	return retVal;
 }
+
+#endif // __arm__
diff --git a/code/qcommon/vm_powerpc.c b/code/qcommon/vm_powerpc.c
index 20550f5b..31b51a22 100644
--- a/code/qcommon/vm_powerpc.c
+++ b/code/qcommon/vm_powerpc.c
@@ -20,6 +20,11 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 ===========================================================================
 */
 
+
+#if defined(powerc) || defined(powerpc) || defined(__powerpc__) || \
+	defined(ppc) || defined(__ppc) || defined(__ppc__) || \
+	defined(__powerpc64__) || defined(__ppc64__)
+
 #include <sys/types.h> /* needed by sys/mman.h on OSX */
 #include <sys/mman.h>
 #include <sys/time.h>
@@ -3233,3 +3238,5 @@ VM_CallCompiled( vm_t *vm, int *args )
 
 	return retVal;
 }
+
+#endif // powerpc
diff --git a/code/qcommon/vm_sparc.c b/code/qcommon/vm_sparc.c
index 75cc9d63..a9ef8076 100644
--- a/code/qcommon/vm_sparc.c
+++ b/code/qcommon/vm_sparc.c
@@ -20,6 +20,8 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 ===========================================================================
 */
 
+#if defined(__sparc) || defined(__sparc__)
+
 /* This code is based almost entirely upon the vm_powerpc.c code by
  * Przemyslaw Iskra.  All I did was make it work on Sparc :-) -DaveM
  */
@@ -1741,3 +1743,5 @@ int VM_CallCompiled(vm_t *vm, int *args)
 
 	return retVal;
 }
+
+#endif // sparc
diff --git a/code/qcommon/vm_x86.c b/code/qcommon/vm_x86.c
index db7c22ca..661149d0 100644
--- a/code/qcommon/vm_x86.c
+++ b/code/qcommon/vm_x86.c
@@ -21,6 +21,8 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */
 // vm_x86.c -- load time compiler and execution environment for x86
 
+#if defined (__i386__) || defined(__x86_64__) || defined(_M_IX86) || defined(_M_X64)
+
 #include "vm_local.h"
 
 #ifdef _WIN32
@@ -42,7 +44,6 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
   #endif
 #endif
 
-#if defined (__i386__) || defined(__x86_64__) || defined(_M_IX86) || defined(_M_X64)
 static void VM_Destroy_Compiled(vm_t* self);
 
 /*