10 * care of the real writing to the file. */ |
10 * care of the real writing to the file. */ |
11 |
11 |
12 #include <stdio.h> |
12 #include <stdio.h> |
13 #include <string.h> |
13 #include <string.h> |
14 |
14 |
15 /** Main call of the endian_check program |
15 /** |
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16 * Main call of the endian_check program |
16 * @param argc argument count |
17 * @param argc argument count |
17 * @param argv arguments themselves |
18 * @param argv arguments themselves |
18 * @return exit code */ |
19 * @return exit code |
19 int main (int argc, char *argv[]) { |
20 */ |
20 unsigned char EndianTest[2] = { 1, 0 }; |
21 int main (int argc, char *argv[]) |
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22 { |
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23 unsigned char endian_test[2] = { 1, 0 }; |
21 int force_BE = 0, force_LE = 0, force_PREPROCESSOR = 0; |
24 int force_BE = 0, force_LE = 0, force_PREPROCESSOR = 0; |
22 |
25 |
23 if (argc > 1 && strcmp(argv[1], "BE") == 0) |
26 if (argc > 1 && strcmp(argv[1], "BE") == 0) force_BE = 1; |
24 force_BE = 1; |
27 if (argc > 1 && strcmp(argv[1], "LE") == 0) force_LE = 1; |
25 if (argc > 1 && strcmp(argv[1], "LE") == 0) |
28 if (argc > 1 && strcmp(argv[1], "PREPROCESSOR") == 0) force_PREPROCESSOR = 1; |
26 force_LE = 1; |
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27 if (argc > 1 && strcmp(argv[1], "PREPROCESSOR") == 0) |
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28 force_PREPROCESSOR = 1; |
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29 |
29 |
30 printf("#ifndef ENDIAN_H\n#define ENDIAN_H\n"); |
30 printf("#ifndef ENDIAN_H\n#define ENDIAN_H\n"); |
31 |
31 |
32 if (force_LE == 1) { |
32 if (force_LE == 1) { |
33 printf("#define TTD_LITTLE_ENDIAN\n"); |
33 printf("#define TTD_LITTLE_ENDIAN\n"); |
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34 } else if (force_BE == 1) { |
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35 printf("#define TTD_BIG_ENDIAN\n"); |
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36 } else if (force_PREPROCESSOR == 1) { |
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37 /* Support for universal binaries on OSX |
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38 * Universal binaries supports both PPC and x86 |
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39 * If a compiler for OSX gets this setting, it will always pick the correct endian and no test is needed |
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40 */ |
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41 printf("#ifdef __BIG_ENDIAN__\n"); |
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42 printf("#define TTD_BIG_ENDIAN\n"); |
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43 printf("#else\n"); |
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44 printf("#define TTD_LITTLE_ENDIAN\n"); |
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45 printf("#endif\n"); |
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46 } else if (*(short*)endian_test == 1 ) { |
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47 printf("#define TTD_LITTLE_ENDIAN\n"); |
34 } else { |
48 } else { |
35 if (force_BE == 1) { |
49 printf("#define TTD_BIG_ENDIAN\n"); |
36 printf("#define TTD_BIG_ENDIAN\n"); |
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37 } else { |
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38 if (force_PREPROCESSOR == 1) { |
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39 /** adding support for universal binaries on OSX |
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40 * Universal binaries supports both PPC and x86 |
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41 * If a compiler for OSX gets this setting, it will always pick the correct endian and no test is needed */ |
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42 printf("#ifdef __BIG_ENDIAN__\n"); |
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43 printf("#define TTD_BIG_ENDIAN\n"); |
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44 printf("#else\n"); |
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45 printf("#define TTD_LITTLE_ENDIAN\n"); |
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46 printf("#endif\n"); |
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47 } else { |
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48 if ( *(short *) EndianTest == 1 ) |
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49 printf("#define TTD_LITTLE_ENDIAN\n"); |
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50 else |
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51 printf("#define TTD_BIG_ENDIAN\n"); |
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52 } |
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53 } |
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54 } |
50 } |
55 printf("#endif\n"); |
51 printf("#endif\n"); |
56 |
52 |
57 return 0; |
53 return 0; |
58 } |
54 } |