|
0
|
1 #include <stdio.h>
|
|
|
2
|
|
|
3 int main(int argc, char *argv[])
|
|
|
4 {
|
|
105
|
5 int val = 0x01020304, ret;
|
|
|
6 unsigned char *s = (unsigned char *) &val;
|
|
|
7 char *name = argv[0];
|
|
0
|
8 (void) argc;
|
|
105
|
9
|
|
|
10 if (sizeof(int) != 4)
|
|
|
11 {
|
|
|
12 fprintf(stderr, "%s: sizeof(int) is not 32 bits!\n", name);
|
|
|
13 return -1;
|
|
|
14 }
|
|
|
15
|
|
|
16 if (s[0] == 0x01 && s[1] == 0x02 && s[2] == 0x03 && s[3] == 0x04)
|
|
|
17 ret = 0;
|
|
|
18 else
|
|
|
19 if (s[0] == 0x04 && s[1] == 0x03 && s[2] == 0x02 && s[3] == 0x01)
|
|
|
20 ret = 1;
|
|
|
21 else
|
|
|
22 {
|
|
|
23 fprintf(stderr, "%s: Unsupported endianess.\n", name);
|
|
|
24 return -2;
|
|
|
25 }
|
|
|
26
|
|
0
|
27 printf(
|
|
|
28 "#ifndef MY_CONFIG_H\n"
|
|
|
29 "#define MY_CONFIG_H 1\n"
|
|
|
30 "\n"
|
|
|
31 "#define TH_BYTEORDER TH_%s_ENDIAN\n"
|
|
|
32 "\n"
|
|
|
33 "#endif /* MY_CONFIG_H */\n"
|
|
|
34 ,
|
|
|
35 ret ? "LITTLE" : "BIG"
|
|
|
36 );
|
|
|
37 return 0;
|
|
|
38 }
|
|
|
39
|
