You don't have to call allegro_exit manually. What you are trying to do is actually done by allegro automatically 
This is the install_allegro line:
install_allegro(SYSTEM_AUTODETECT, &errno, stabilize_before_exit);
this is the exit function
int stabilize_before_exit (void) { allegro_exit(); return 0; }
Currently this is just getting things set up properly, I haven't actually started anything real yet...
Anyway, the error I'm getting is
invalid conversion from `int (*)()' to `int (*)(void (*)())'
according to Dev-C++, on the install_allegro line. Anyone know what's going on?
]]>Remove the void inside your argument list.
]]>didn't help
]]>You don't have to call allegro_exit manually. What you are trying to do is actually done by allegro automatically
thanks for the tip, but it still didn't help
]]>Have you declared the function before using it in the callback?
]]>the function is the first line in the source file, I've tried it before and after #include <allegro.h>
sorry, I'm not entirely sure what you mean by "before using it in the callback"
]]>#include <allegro.h> int stabilize_before_exit () { allegro_exit(); return 0; } int main(int argc, char* argv[]){ install_allegro(SYSTEM_AUTODETECT, &errno, stabilize_before_exit); return 0; } END_OF_MAIN()
gcc -w -Wall helloworld.c `allegro-config --libs`
I get zero errors or warnings 
Uhm....... as far as I know the last argument should point to atexit... that tells allegro what to call to register its own exit callback. Hence the void (*) error, because atexit takes a void*.
[edit]
The `errno_ptr' and `atexit_ptr' parameters should point to the errno variable and atexit function from your libc: these are required because when Allegro is linked as a DLL, it doesn't have direct access to your local libc data. `atexit_ptr' may be NULL, in which case it is your responsibility to call allegro_exit() manually. Example:
install_allegro(SYSTEM_AUTODETECT, &errno, atexit);
Yep. So, if you want your own function called at the end, run atexit(stabilize_before_exit); in your main.
]]>oh I see... sorry I misunderstood that feature. Okay, I got it now.
]]>because atexit takes a void*.
No
#include <stdlib.h>
int atexit(void (*func)(void));
This function places the specified function func on a list of functions to be called when exit is called. These functions are called as if a last-in-first-out queue is used, that is, the last function registered with atexit will be the first function called by exit.
At least 32 functions can be registered this way.
A void * as in avoid function pointer.
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