MAKE_VERSION man page on DragonFly

MAKE_VERSION man page on DragonFly

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MAKE_VERSION(3)			Allegro manual		       MAKE_VERSION(3)

NAME
       MAKE_VERSION - Create a 32 bit integer from the Allegro version

SYNOPSIS
       #include <allegro.h>

       Macro MAKE_VERSION(a, b, c)

DESCRIPTION
       This  macro  can	 be  used to check if some Allegro version is (binary)
       compatible with the current version. It is safe to use > and < to check
       if  one	version	 is  more  recent  than	 another.  The third number is
       ignored if the second number is	even,  so  MAKE_VERSION(4,  2,	0)  is
       equivalent  to  MAKE_VERSION(4,	2, 1).	This is because of our version
       numbering policy since 4.0.0: the second	 number	 is  even  for	stable
       releases,  which	 must  be  ABI-compatible with earlier versions of the
       same series.  This macro	 is  mainly  useful  for  addon	 packages  and
       libraries.  See the `ABI compatibility information' section of the man‐
       ual for more detailed information. Example:

	  /* Check if the current version is compatible with Allegro 4.2.0 */
	  #if (MAKE_VERSION(4, 2, 0) <= MAKE_VERSION(ALLEGRO_VERSION, \
			     ALLEGRO_SUB_VERSION, ALLEGRO_WIP_VERSION))
	     /* Allegro 4.2.0 compatibility */
	  #else
	     /* Work-around */
	  #endif

SEE ALSO
       ALLEGRO_VERSION(3), ALLEGRO_SUB_VERSION(3), ALLEGRO_WIP_VERSION(3)

Allegro				 version 4.4.2		       MAKE_VERSION(3)

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