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