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      1 # SYNOPSIS
      2 #
      3 #   AX_CHECK_CATCHABLE_ABRT
      4 #
      5 # DESCRIPTION
      6 #
      7 #  Check whether SIGABRT can be caught using signal handlers.
      8 
      9 #serial 1
     10 
     11 AC_DEFUN([AX_CHECK_CATCHABLE_ABRT], [dnl
     12     AC_PREREQ(2.64)
     13     AS_VAR_PUSHDEF([CACHEVAR], [ax_cv_check_[]_AC_LANG_ABBREV[]CATCHABLE_ABRT])dnl
     14     AC_CACHE_CHECK([whether SIGABRT can be caught when using the _AC_LANG compiler], CACHEVAR, [
     15         AC_RUN_IFELSE([
     16             AC_LANG_PROGRAM([[
     17 #include <signal.h>
     18 #include <stdlib.h>
     19 
     20 #ifndef SIGABRT
     21 # error SIGABRT is not defined
     22 #endif
     23 
     24 static void sigabrt_handler_3(int _)
     25 {
     26     exit(0);
     27 }
     28 
     29 static void sigabrt_handler_2(int _)
     30 {
     31     signal(SIGABRT, sigabrt_handler_3);
     32     abort();
     33     exit(1);
     34 }
     35 
     36 static void sigabrt_handler_1(int _)
     37 {
     38     signal(SIGABRT, sigabrt_handler_2);
     39     abort();
     40     exit(1);
     41 }
     42             ]], [[
     43 signal(SIGABRT, sigabrt_handler_1);
     44 abort();
     45 exit(1);
     46             ]])],
     47             [AS_VAR_SET(CACHEVAR, [yes])],
     48             [AS_VAR_SET(CACHEVAR, [no])],
     49             [AS_VAR_SET(CACHEVAR, [unknown])]
     50         )
     51     ])
     52     AS_VAR_IF(CACHEVAR, yes,
     53         [AC_DEFINE([HAVE_CATCHABLE_ABRT], [1], [Define if SIGABRT can be caught using signal handlers])],
     54         [AC_MSG_WARN([On this platform, SIGABRT cannot be caught using signal handlers.])]
     55     )
     56     AS_VAR_POPDEF([CACHEVAR])dnl
     57 ])
     58