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2037.1.1
by kalebral at gmail
More copyright updates |
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# Copyright (C) 2010 Brian Aker |
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#
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# This file is free software |
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# gives unlimited permission to copy and/or distribute it, |
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# with or without modifications, as long as this notice is preserved. |
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1782
by Brian Aker
This modifies our thread system to be based on boost, and it fixes a |
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AC_DEFUN([DRIZZLE_STACK_DIRECTION],[ |
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AC_CACHE_CHECK(stack direction for C alloca, ac_cv_c_stack_direction,
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[AC_RUN_IFELSE(
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[AC_LANG_PROGRAM(
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[[
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#include <stdlib.h>
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/* Prevent compiler optimization by HP's compiler, see bug#42213 */
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#if defined(__HP_cc) || defined (__HP_aCC) || defined (__hpux)
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#pragma noinline
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#endif
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int find_stack_direction ()
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{
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static char *addr = 0;
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auto char dummy;
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if (addr == 0)
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{
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addr = &dummy;
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return find_stack_direction ();
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}
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else
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return (&dummy > addr) ? 1 : -1;
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}
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]], |
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[[ |
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exit (find_stack_direction() < 0);
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]] |
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)], |
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[ac_cv_c_stack_direction=1], |
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[ac_cv_c_stack_direction=-1], |
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[ac_cv_c_stack_direction=] |
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)] |
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) |
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AC_DEFINE_UNQUOTED(STACK_DIRECTION, $ac_cv_c_stack_direction) |
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]) |