← Back to branch summary

~drizzle-trunk/drizzle/development

« back to all changes in this revision

Viewing changes to m4/drizzle_stack_direction.m4

  • Committer: Brian Aker
  • Date: 2009-11-25 07:05:58 UTC
  • mfrom: (1192.3.39 pandora-build)
  • Revision ID: brian@gaz-20091125070558-mzf1m5etiwb841jb
Merge Monty

Show diffs side-by-side

added added

removed removed

Lines of Context:
m4/drizzle_stack_direction.m4
1
 
AC_DEFUN([DRIZZLE_STACK_DIRECTION],
2
 
 [AC_CACHE_CHECK(stack direction for C alloca, ac_cv_c_stack_direction,
3
 
 [AC_TRY_RUN([#include <stdlib.h>
4
 
 int find_stack_direction ()
5
 
 {
6
 
   static char *addr = 0;
7
 
   auto char dummy;
8
 
   if (addr == 0)
9
 
     {
10
 
       addr = &dummy;
11
 
       return find_stack_direction ();
12
 
     }
13
 
   else
14
 
     return (&dummy > addr) ? 1 : -1;
15
 
 }
16
 
 int main ()
17
 
 {
18
 
   exit (find_stack_direction() < 0);
19
 
 }], ac_cv_c_stack_direction=1, ac_cv_c_stack_direction=-1,
20
 
   ac_cv_c_stack_direction=)])
21
 
 AC_DEFINE_UNQUOTED(STACK_DIRECTION, $ac_cv_c_stack_direction)
22
 
])dnl