(svn r158) -Fix: make endianess check 100% accurate (hopefully ;))

1 files changed, 22 insertions, 0 deletions

diff --git a/endian_check.c b/endian_check.c
new file mode 100644
index 000000000..14d96fe91
--- /dev/null
+++ b/endian_check.c
@@ -0,0 +1,22 @@
+#include <stdio.h>
+
+// This pretty simple file checks if the system is LITTLE_ENDIAN or BIG_ENDIAN
+//  it does that by putting a 1 and a 0 in an array, and read it out as one
+//  number. If it is 1, it is LITTLE_ENDIAN, if it is 256, it is BIG_ENDINA
+//
+// After that it outputs the contents of an include files (endian.h)
+//  that says or TTD_LITTLE_ENDIAN, or TTD_BIG_ENDIAN. Makefile takes
+//  care of the real writing to the file.
+
+int main () {
+  unsigned char EndianTest[2] = { 1, 0 };
+  printf("#ifndef ENDIAN_H\n#define ENDIAN_H\n");
+  if( *(short *) EndianTest == 1 )
+    printf("#define TTD_LITTLE_ENDIAN\n");
+  else
+    printf("#define TTD_BIG_ENDIAN\n");
+
+  printf("#endif\n");
+
+  return 0;
+}