You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
83 lines
3.0 KiB
83 lines
3.0 KiB
# signal_h.m4 serial 18 |
|
dnl Copyright (C) 2007-2017 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]) |
|
AC_REQUIRE([gl_CHECK_TYPE_SIGSET_T]) |
|
gl_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> |
|
]]) |
|
|
|
dnl Ensure the type pid_t gets defined. |
|
AC_REQUIRE([AC_TYPE_PID_T]) |
|
|
|
AC_REQUIRE([AC_TYPE_UID_T]) |
|
|
|
dnl Persuade glibc <signal.h> to define sighandler_t. |
|
AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS]) |
|
AC_CHECK_TYPE([sighandler_t], [], [HAVE_SIGHANDLER_T=0], [[ |
|
#include <signal.h> |
|
]]) |
|
|
|
dnl Check for declarations of anything we want to poison if the |
|
dnl corresponding gnulib module is not in use. |
|
gl_WARN_ON_USE_PREPARE([[#include <signal.h> |
|
]], [pthread_sigmask sigaction |
|
sigaddset sigdelset sigemptyset sigfillset sigismember |
|
sigpending sigprocmask]) |
|
]) |
|
|
|
AC_DEFUN([gl_CHECK_TYPE_SIGSET_T], |
|
[ |
|
AC_CHECK_TYPES([sigset_t], |
|
[gl_cv_type_sigset_t=yes], [gl_cv_type_sigset_t=no], |
|
[[ |
|
#include <signal.h> |
|
/* Mingw defines sigset_t not in <signal.h>, but in <sys/types.h>. */ |
|
#include <sys/types.h> |
|
]]) |
|
if test $gl_cv_type_sigset_t != yes; then |
|
HAVE_SIGSET_T=0 |
|
fi |
|
]) |
|
|
|
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]) |
|
gl_MODULE_INDICATOR_SET_VARIABLE([$1]) |
|
dnl Define it also as a C macro, for the benefit of the unit tests. |
|
gl_MODULE_INDICATOR_FOR_TESTS([$1]) |
|
]) |
|
|
|
AC_DEFUN([gl_SIGNAL_H_DEFAULTS], |
|
[ |
|
GNULIB_PTHREAD_SIGMASK=0; AC_SUBST([GNULIB_PTHREAD_SIGMASK]) |
|
GNULIB_RAISE=0; AC_SUBST([GNULIB_RAISE]) |
|
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_PTHREAD_SIGMASK=1; AC_SUBST([HAVE_PTHREAD_SIGMASK]) |
|
HAVE_RAISE=1; AC_SUBST([HAVE_RAISE]) |
|
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]) |
|
HAVE_SIGHANDLER_T=1; AC_SUBST([HAVE_SIGHANDLER_T]) |
|
REPLACE_PTHREAD_SIGMASK=0; AC_SUBST([REPLACE_PTHREAD_SIGMASK]) |
|
REPLACE_RAISE=0; AC_SUBST([REPLACE_RAISE]) |
|
])
|
|
|