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- # signal_h.m4 serial 7
- dnl Copyright (C) 2007, 2008, 2009 Free Software Foundation, Inc.
- dnl This file is free software; the Free Software Foundation
- dnl gives unlimited permission to copy and/or distribute it,
- dnl with or without modifications, as long as this notice is preserved.
- AC_DEFUN([gl_SIGNAL_H],
- [
- AC_REQUIRE([gl_SIGNAL_H_DEFAULTS])
- gl_CHECK_NEXT_HEADERS([signal.h])
- # AIX declares sig_atomic_t to already include volatile, and C89 compilers
- # then choke on 'volatile sig_atomic_t'. C99 requires that it compile.
- AC_CHECK_TYPE([volatile sig_atomic_t], [],
- [HAVE_TYPE_VOLATILE_SIG_ATOMIC_T=0], [[
- #include <signal.h>
- ]])
- ])
- AC_DEFUN([gl_SIGNAL_MODULE_INDICATOR],
- [
- dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
- AC_REQUIRE([gl_SIGNAL_H_DEFAULTS])
- GNULIB_[]m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=1
- ])
- AC_DEFUN([gl_SIGNAL_H_DEFAULTS],
- [
- GNULIB_SIGNAL_H_SIGPIPE=0; AC_SUBST([GNULIB_SIGNAL_H_SIGPIPE])
- GNULIB_SIGPROCMASK=0; AC_SUBST([GNULIB_SIGPROCMASK])
- GNULIB_SIGACTION=0; AC_SUBST([GNULIB_SIGACTION])
- dnl Assume proper GNU behavior unless another module says otherwise.
- HAVE_POSIX_SIGNALBLOCKING=1; AC_SUBST([HAVE_POSIX_SIGNALBLOCKING])
- HAVE_SIGSET_T=1; AC_SUBST([HAVE_SIGSET_T])
- HAVE_SIGINFO_T=1; AC_SUBST([HAVE_SIGINFO_T])
- HAVE_SIGACTION=1; AC_SUBST([HAVE_SIGACTION])
- HAVE_STRUCT_SIGACTION_SA_SIGACTION=1;
- AC_SUBST([HAVE_STRUCT_SIGACTION_SA_SIGACTION])
- HAVE_TYPE_VOLATILE_SIG_ATOMIC_T=1;
- AC_SUBST([HAVE_TYPE_VOLATILE_SIG_ATOMIC_T])
- ])
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