mirror of
https://github.com/jedisct1/libsodium.git
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58 lines
1.2 KiB
Plaintext
58 lines
1.2 KiB
Plaintext
# SYNOPSIS
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#
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# AX_CHECK_CATCHABLE_ABRT
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#
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# DESCRIPTION
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#
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# Check whether SIGABRT can be caught using signal handlers.
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#serial 1
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AC_DEFUN([AX_CHECK_CATCHABLE_ABRT], [dnl
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AC_PREREQ(2.64)
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AS_VAR_PUSHDEF([CACHEVAR], [ax_cv_check_[]_AC_LANG_ABBREV[]CATCHABLE_ABRT])dnl
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AC_CACHE_CHECK([whether SIGABRT can be caught], CACHEVAR, [
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AC_RUN_IFELSE([
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AC_LANG_PROGRAM([[
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#include <signal.h>
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#include <stdlib.h>
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#ifndef SIGABRT
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# error SIGABRT is not defined
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#endif
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static void sigabrt_handler_3(int _)
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{
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exit(0);
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}
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static void sigabrt_handler_2(int _)
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{
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signal(SIGABRT, sigabrt_handler_3);
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abort();
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exit(1);
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}
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static void sigabrt_handler_1(int _)
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{
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signal(SIGABRT, sigabrt_handler_2);
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abort();
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exit(1);
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}
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]], [[
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signal(SIGABRT, sigabrt_handler_1);
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abort();
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exit(1);
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]])],
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[AS_VAR_SET(CACHEVAR, [yes])],
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[AS_VAR_SET(CACHEVAR, [no])],
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[AS_VAR_SET(CACHEVAR, [unknown])]
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)
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])
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AS_VAR_IF(CACHEVAR, yes,
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[AC_DEFINE([HAVE_CATCHABLE_ABRT], [1], [Define if SIGABRT can be caught using signal handlers])],
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[AC_MSG_WARN([On this platform, SIGABRT cannot be caught using signal handlers.])]
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)
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AS_VAR_POPDEF([CACHEVAR])dnl
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])
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