tron@2186: /* $Id$ */
tron@2186: 
truelight@157: #include <stdio.h>
truelight@157: 
truelight@157: // This pretty simple file checks if the system is LITTLE_ENDIAN or BIG_ENDIAN
truelight@157: //  it does that by putting a 1 and a 0 in an array, and read it out as one
truelight@200: //  number. If it is 1, it is LITTLE_ENDIAN, if it is 256, it is BIG_ENDIAN
truelight@157: //
truelight@157: // After that it outputs the contents of an include files (endian.h)
truelight@157: //  that says or TTD_LITTLE_ENDIAN, or TTD_BIG_ENDIAN. Makefile takes
truelight@157: //  care of the real writing to the file.
truelight@157: 
TrueLight@1692: int main (int argc, char *argv[]) {
truelight@157:   unsigned char EndianTest[2] = { 1, 0 };
TrueLight@1692:   int force_BE = 0, force_LE = 0;
TrueLight@1692: 
TrueLight@1692:   if (argc > 1 && strcmp(argv[1], "BE") == 0)
TrueLight@1692:     force_BE = 1;
TrueLight@1692:   if (argc > 1 && strcmp(argv[1], "LE") == 0)
TrueLight@1692:     force_LE = 1;
TrueLight@1692: 
truelight@157:   printf("#ifndef ENDIAN_H\n#define ENDIAN_H\n");
TrueLight@1692: 
TrueLight@1692:   if ( (*(short *) EndianTest == 1 && force_BE != 1) || force_LE == 1)
truelight@157:     printf("#define TTD_LITTLE_ENDIAN\n");
truelight@157:   else
truelight@157:     printf("#define TTD_BIG_ENDIAN\n");
truelight@157: 
truelight@157:   printf("#endif\n");
truelight@157: 
truelight@157:   return 0;
truelight@157: }