#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_ENDIAN // // 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; }