summaryrefslogtreecommitdiff
path: root/gnulib-m4/signal_h.m4
diff options
context:
space:
mode:
authorJörg Frings-Fürst <debian@jff.email>2022-01-08 11:51:07 +0100
committerJörg Frings-Fürst <debian@jff.email>2022-01-08 11:51:07 +0100
commitbe8efac78d067c138ad8dda03df4336e73f94887 (patch)
tree5f5254a628ba0ef72065b93d949d1c985742ea8e /gnulib-m4/signal_h.m4
parent7b65dbd4ebade81d504cfe5e681292a58ad1fdf0 (diff)
New upstream version 1.0upstream/1.0
Diffstat (limited to 'gnulib-m4/signal_h.m4')
-rw-r--r--gnulib-m4/signal_h.m437
1 files changed, 27 insertions, 10 deletions
diff --git a/gnulib-m4/signal_h.m4 b/gnulib-m4/signal_h.m4
index 394b91d3..4c05c627 100644
--- a/gnulib-m4/signal_h.m4
+++ b/gnulib-m4/signal_h.m4
@@ -1,10 +1,10 @@
-# signal_h.m4 serial 18
-dnl Copyright (C) 2007-2018 Free Software Foundation, Inc.
+# signal_h.m4 serial 22
+dnl Copyright (C) 2007-2022 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_DEFUN_ONCE([gl_SIGNAL_H],
[
AC_REQUIRE([gl_SIGNAL_H_DEFAULTS])
AC_REQUIRE([gl_CHECK_TYPE_SIGSET_T])
@@ -34,6 +34,8 @@ AC_DEFUN([gl_SIGNAL_H],
]], [pthread_sigmask sigaction
sigaddset sigdelset sigemptyset sigfillset sigismember
sigpending sigprocmask])
+
+ AC_REQUIRE([AC_C_RESTRICT])
])
AC_DEFUN([gl_CHECK_TYPE_SIGSET_T],
@@ -50,22 +52,37 @@ AC_DEFUN([gl_CHECK_TYPE_SIGSET_T],
fi
])
+# gl_SIGNAL_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
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])
+ dnl Ensure to expand the default settings once only.
+ gl_SIGNAL_H_REQUIRE_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])
])
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd. It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
+AC_DEFUN([gl_SIGNAL_H_REQUIRE_DEFAULTS],
+[
+ m4_defun(GL_MODULE_INDICATOR_PREFIX[_SIGNAL_H_MODULE_INDICATOR_DEFAULTS], [
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_PTHREAD_SIGMASK])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_RAISE])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SIGNAL_H_SIGPIPE])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SIGPROCMASK])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SIGACTION])
+ ])
+ m4_require(GL_MODULE_INDICATOR_PREFIX[_SIGNAL_H_MODULE_INDICATOR_DEFAULTS])
+ AC_REQUIRE([gl_SIGNAL_H_DEFAULTS])
+])
+
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])