OpenTTD-patches/endian_check.c

23 lines
705 B
C

#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;
}