mirror of
https://github.com/cc65/cc65.git
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41 lines
1.5 KiB
C
41 lines
1.5 KiB
C
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/* Until 2.19 the __CC65__ macro was defined as (VER_MAJOR * 0x100) + (VER_MINOR * 0x10),
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* which caused it to contain broken values in compiler releases 2.16 to 2.19. The
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* macro was fixed some time after 2.19 to (VER_MAJOR * 0x100) + VER_MINOR.
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*
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* The following strategy can be used to still compare for less or greater versions,
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* should this really be necessary or wanted - it is not recommended afterall.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#if ((__CC65__ & 0xff00) > 3) || ((__CC65__ & 0x000f) > 0)
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/* compiler version is 2.19-git or higher */
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# define VER_MAJOR ((__CC65__ >> 8) & 0xff)
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# define VER_MINOR (__CC65__ & 0xff)
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#elif ((__CC65__ & 0xff00) == 3)
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/* broken values in version 2.16 - 2.19-git before the bug was fixed */
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# define VER_MAJOR 2
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# define VER_MINOR (((__CC65__ >> 4) & 0x0f) + 16)
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#else
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/* values before 2.16 */
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# define VER_MAJOR ((__CC65__ >> 8) & 0xff)
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# define VER_MINOR ((__CC65__ >> 4) & 0x0f)
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#endif
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/* define a new value that will work for comparing all versions */
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#define VERSION ((VER_MAJOR << 8) + VER_MINOR)
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int main(void)
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{
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printf("__CC65__ defined as %04x\n", __CC65__);
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printf("compiler version is %u.%u\n", VER_MAJOR, VER_MINOR);
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if (__CC65__ == VERSION) {
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printf("__CC65__ is defined correctly as (VER_MAJOR * 0x100) + VER_MINOR\n");
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return EXIT_SUCCESS;
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}
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printf("__CC65__ is incorrectly defined as (VER_MAJOR * 0x100) + (VER_MINOR * 0x10)\n");
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return EXIT_FAILURE;
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}
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