1al_install_system(3)                                      al_install_system(3)
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NAME

6       al_install_system - Allegro 5 API
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SYNOPSIS

9              #include <allegro5/allegro.h>
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11              bool al_install_system(int version, int (*atexit_ptr)(void (*)(void)))
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DESCRIPTION

14       Initialize  the  Allegro  system.   No  other  Allegro functions can be
15       called before this (with one or two exceptions).
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17       The version field should always be set to ALLEGRO_VERSION_INT.
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19       If atexit_ptr is non-NULL, and if hasn’t been  done  already,  al_unin‐
20       stall_system(3) will be registered as an atexit function.
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22       Returns  true  if Allegro was successfully initialized by this function
23       call (or already was initialized previously), false if  Allegro  cannot
24       be used.  A common reason for this function to fail is when the version
25       of Allegro you compiled your game against is not  compatible  with  the
26       version of the shared libraries that were found on the system.
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28       The  version  compatibility check works as follows.  Let A = xa.ya.za.*
29       be the version of Allegro you compiled with, and B = xb.yb.zb.* be  the
30       version of Allegro found in the system shared library.
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32       If  you defined ALLEGRO_UNSTABLE before including Allegro headers, then
33       version A is compatible with B only if xa.ya.za = xb.yb.zb.  Otherwise,
34       A is compatible with B only if xa.ya = xb.yb.
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SEE ALSO

37       al_init(3)
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41Allegro reference manual                                  al_install_system(3)
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