Disable Ogawa on big-endian systems. Bumped version to 1.7.2.

Author: magnusw

export/Field3DFile.h

@@ -661,7 +661,23 @@ class FIELD3D_API Field3DOutputFile : public Field3DFileBase
 
   //! Whether to output ogawa files
   static void useOgawa(const bool enabled)
-  { ms_doOgawa = enabled; }
+  { 
+    // simple temporary endian check
+    union {
+      uint32_t l;
+      char c[4];
+    } u;
+    
+    u.l = 0x01234567;
+    
+    if (u.c[0] == 0x67) {
+      ms_doOgawa = enabled;
+    } else {
+      std::cerr << "WARNING: Field3D only supports Ogawa-backed files "
+                << "on little-endian systems." << std::endl;
+      ms_doOgawa = false;
+    }
+  }
 
   //! \name Writing layer to disk
   //! \{

export/ns.h

@@ -37,7 +37,7 @@
 
 #define FIELD3D_MAJOR_VER 1
 #define FIELD3D_MINOR_VER 7
-#define FIELD3D_MICRO_VER 1
+#define FIELD3D_MICRO_VER 2
 
 #define FIELD3D_VERSION_NS v1_7