diff --git a/dep/include/g3dlite/G3D/AtomicInt32.h b/dep/include/g3dlite/G3D/AtomicInt32.h
index 2d63f99..9a5722d 100644
--- a/dep/include/g3dlite/G3D/AtomicInt32.h
+++ b/dep/include/g3dlite/G3D/AtomicInt32.h
@@ -76,13 +76,8 @@ public:

 #       elif defined(G3D_LINUX) || defined(G3D_FREEBSD)

-            int32 old;
-            asm volatile ("lock; xaddl %0,%1"
-                  : "=r"(old), "=m"(m_value) /* outputs */
-                  : "0"(x), "m"(m_value)   /* inputs */
-                  : "memory", "cc");
-            return old;
-
+            return __sync_fetch_and_add(&m_value, 1);
+
 #       elif defined(G3D_OSX)

             int32 old = m_value;
@@ -115,14 +110,7 @@ public:
             // Note: returns the newly decremented value
             return InterlockedDecrement(&m_value);
 #       elif defined(G3D_LINUX)  || defined(G3D_FREEBSD)
-            unsigned char nz;
-
-            asm volatile ("lock; decl %1;\n\t"
-                          "setnz %%al"
-                          : "=a" (nz)
-                          : "m" (m_value)
-                          : "memory", "cc");
-            return nz;
+           return __sync_sub_and_fetch(&m_value, 1);
 #       elif defined(G3D_OSX)
             // Note: returns the newly decremented value
             return OSAtomicDecrement32(&m_value);
@@ -142,7 +130,9 @@ public:
     int32 compareAndSet(const int32 comperand, const int32 exchange) {
 #       if defined(G3D_WIN32)
             return InterlockedCompareExchange(&m_value, exchange, comperand);
-#       elif defined(G3D_LINUX) || defined(G3D_FREEBSD) || defined(G3D_OSX)
+#       elif defined(G3D_LINUX) || defined(G3D_FREEBSD)
+       return __sync_val_compare_and_swap(&m_value, comperand, exchange);
+# elif defined(G3D_OSX)
             // Based on Apache Portable Runtime
             // http://koders.com/c/fid3B6631EE94542CDBAA03E822CA780CBA1B024822.aspx
             int32 ret;
diff --git a/dep/include/g3dlite/G3D/platform.h b/dep/include/g3dlite/G3D/platform.h
index c6018bb..985301a 100644
--- a/dep/include/g3dlite/G3D/platform.h
+++ b/dep/include/g3dlite/G3D/platform.h
@@ -270,8 +270,13 @@ int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrev, LPSTR szCmdLine, int sw) {\
 #       ifndef __stdcall
 #           define __stdcall
 #       endif
+# elif defined(__arm__)
+
+ // CDECL does not apply to arm.
+# define __cdecl
 #   endif // calling conventions

+
 /** @def G3D_CHECK_PRINTF_METHOD_ARGS()
     Enables printf parameter validation on gcc. */
 #   define G3D_CHECK_PRINTF_METHOD_ARGS   __attribute__((__format__(__printf__, 2, 3)))
diff --git a/dep/src/g3dlite/System.cpp b/dep/src/g3dlite/System.cpp
index ce190d0..a4cfab2 100644
--- a/dep/src/g3dlite/System.cpp
+++ b/dep/src/g3dlite/System.cpp
@@ -524,8 +524,11 @@ static bool checkForCPUID() {
     // all known supported architectures have cpuid
     // add cases for incompatible architectures if they are added
     // e.g., if we ever support __powerpc__ being defined again
-
+#if defined(__arm__)
+    return false;
+#else
     return true;
+#endif
 }


@@ -1730,6 +1733,14 @@ void System::cpuid(CPUIDFunction func, uint32& eax, uint32& ebx, uint32& ecx, ui
     edx = 0;
 }

+#elif defined(G3D_LINUX) && defined(__arm__)
+// non-x86 CPU; no CPUID, at least in userspace
+void System::cpuid(CPUIDFunction func, uint32& eax, uint32& ebx, uint32& ecx, uint32& edx) {
+    eax = 0;
+    ebx = 0;
+    ecx = 0;
+    edx = 0;
+}
 #else

 // See http://sam.zoy.org/blog/2007-04-13-shlib-with-non-pic-code-have-inline-assembly-and-pic-mix-well