Commit 6db30f83 authored by Paul Eggert's avatar Paul Eggert

Add gnulib support for pthread_sigmask.

* Makefile.in (GNULIB_MODULES): Add pthread_sigmask.
(GNULIB_TOOL_FLAGS): Avoid sigprocmask.  Emacs does its own
implementation of 'sigprocmask' on Windows, and it assumes
'sigprocmask' on non-Windows hosts, so it doesn't need the
sigprocmask module.
* lib/signal.in.h, m4/pthread_sigmask.m4, m4/signal_h.m4:
New files, automatically imported from gnulib.
* lib/gnulib.mk, m4/gl-comp.m4: Automatically-imported update
due to the above changes.
* .bzrignore: Add lib/signal.h.
parent 84e04a29
2011-07-06 Paul Eggert <eggert@cs.ucla.edu>
Add gnulib support for pthread_sigmask.
* Makefile.in (GNULIB_MODULES): Add pthread_sigmask.
(GNULIB_TOOL_FLAGS): Avoid sigprocmask. Emacs does its own
implementation of 'sigprocmask' on Windows, and it assumes
'sigprocmask' on non-Windows hosts, so it doesn't need the
sigprocmask module.
* lib/signal.in.h, m4/pthread_sigmask.m4, m4/signal_h.m4:
New files, automatically imported from gnulib.
* lib/gnulib.mk, m4/gl-comp.m4: Automatically-imported update
due to the above changes.
* .bzrignore: Add lib/signal.h.
2011-07-05 Jan Djärv <jan.h.d@swipnet.se>
* configure.in (HAVE_GCONF): Allow both HAVE_GCONF and HAVE_GSETTINGS.
......
......@@ -335,9 +335,11 @@ GNULIB_MODULES = \
alloca-opt \
careadlinkat crypto/md5 crypto/sha1 crypto/sha256 crypto/sha512 dtoastr \
dup2 \
filemode getloadavg getopt-gnu ignore-value intprops lstat mktime readlink \
filemode getloadavg getopt-gnu ignore-value intprops lstat \
mktime pthread_sigmask readlink \
socklen stdarg stdio strftime strtoumax symlink sys_stat
GNULIB_TOOL_FLAGS = \
--avoid=sigprocmask \
--conditional-dependencies --import --no-changelog --no-vc-files \
--makefile-name=gnulib.mk
sync-from-gnulib: $(gnulib_srcdir)
......
......@@ -9,7 +9,7 @@
# the same distribution terms as the rest of that program.
#
# Generated by gnulib-tool.
# Reproduce by: gnulib-tool --import --dir=. --lib=libgnu --source-base=lib --m4-base=m4 --doc-base=doc --tests-base=tests --aux-dir=. --makefile-name=gnulib.mk --conditional-dependencies --no-libtool --macro-prefix=gl --no-vc-files alloca-opt careadlinkat crypto/md5 crypto/sha1 crypto/sha256 crypto/sha512 dtoastr dup2 filemode getloadavg getopt-gnu ignore-value intprops lstat mktime readlink socklen stdarg stdio strftime strtoumax symlink sys_stat
# Reproduce by: gnulib-tool --import --dir=. --lib=libgnu --source-base=lib --m4-base=m4 --doc-base=doc --tests-base=tests --aux-dir=. --avoid=sigprocmask --makefile-name=gnulib.mk --conditional-dependencies --no-libtool --macro-prefix=gl --no-vc-files alloca-opt careadlinkat crypto/md5 crypto/sha1 crypto/sha256 crypto/sha512 dtoastr dup2 filemode getloadavg getopt-gnu ignore-value intprops lstat mktime pthread_sigmask readlink socklen stdarg stdio strftime strtoumax symlink sys_stat
MOSTLYCLEANFILES += core *.stackdump
......@@ -303,6 +303,44 @@ EXTRA_libgnu_a_SOURCES += readlink.c
## end gnulib module readlink
## begin gnulib module signal
BUILT_SOURCES += signal.h
# We need the following in order to create <signal.h> when the system
# doesn't have a complete one.
signal.h: signal.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(ARG_NONNULL_H) $(WARN_ON_USE_H)
$(AM_V_GEN)rm -f $@-t $@ && \
{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
sed -e 's|@''GUARD_PREFIX''@|GL|g' \
-e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
-e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
-e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
-e 's|@''NEXT_SIGNAL_H''@|$(NEXT_SIGNAL_H)|g' \
-e 's|@''GNULIB_PTHREAD_SIGMASK''@|$(GNULIB_PTHREAD_SIGMASK)|g' \
-e 's/@''GNULIB_SIGNAL_H_SIGPIPE''@/$(GNULIB_SIGNAL_H_SIGPIPE)/g' \
-e 's/@''GNULIB_SIGPROCMASK''@/$(GNULIB_SIGPROCMASK)/g' \
-e 's/@''GNULIB_SIGACTION''@/$(GNULIB_SIGACTION)/g' \
-e 's|@''HAVE_POSIX_SIGNALBLOCKING''@|$(HAVE_POSIX_SIGNALBLOCKING)|g' \
-e 's|@''HAVE_SIGSET_T''@|$(HAVE_SIGSET_T)|g' \
-e 's|@''HAVE_SIGINFO_T''@|$(HAVE_SIGINFO_T)|g' \
-e 's|@''HAVE_SIGACTION''@|$(HAVE_SIGACTION)|g' \
-e 's|@''HAVE_STRUCT_SIGACTION_SA_SIGACTION''@|$(HAVE_STRUCT_SIGACTION_SA_SIGACTION)|g' \
-e 's|@''HAVE_TYPE_VOLATILE_SIG_ATOMIC_T''@|$(HAVE_TYPE_VOLATILE_SIG_ATOMIC_T)|g' \
-e 's|@''HAVE_SIGHANDLER_T''@|$(HAVE_SIGHANDLER_T)|g' \
-e 's|@''REPLACE_PTHREAD_SIGMASK''@|$(REPLACE_PTHREAD_SIGMASK)|g' \
-e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \
-e '/definition of _GL_ARG_NONNULL/r $(ARG_NONNULL_H)' \
-e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)' \
< $(srcdir)/signal.in.h; \
} > $@-t && \
mv $@-t $@
MOSTLYCLEANFILES += signal.h signal.h-t
EXTRA_DIST += signal.in.h
## end gnulib module signal
## begin gnulib module stat
if gl_GNULIB_ENABLED_stat
......
/* A GNU-like <signal.h>.
Copyright (C) 2006-2011 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#if __GNUC__ >= 3
@PRAGMA_SYSTEM_HEADER@
#endif
@PRAGMA_COLUMNS@
#if defined __need_sig_atomic_t || defined __need_sigset_t
/* Special invocation convention inside glibc header files. */
# @INCLUDE_NEXT@ @NEXT_SIGNAL_H@
#else
/* Normal invocation convention. */
#ifndef _@GUARD_PREFIX@_SIGNAL_H
/* Define pid_t, uid_t.
Also, mingw defines sigset_t not in <signal.h>, but in <sys/types.h>.
On Solaris 10, <signal.h> includes <sys/types.h>, which eventually includes
us; so include <sys/types.h> now, before the second inclusion guard. */
#include <sys/types.h>
/* The include_next requires a split double-inclusion guard. */
#@INCLUDE_NEXT@ @NEXT_SIGNAL_H@
#ifndef _@GUARD_PREFIX@_SIGNAL_H
#define _@GUARD_PREFIX@_SIGNAL_H
/* The definitions of _GL_FUNCDECL_RPL etc. are copied here. */
/* The definition of _GL_ARG_NONNULL is copied here. */
/* The definition of _GL_WARN_ON_USE is copied here. */
/* On AIX, sig_atomic_t already includes volatile. C99 requires that
'volatile sig_atomic_t' ignore the extra modifier, but C89 did not.
Hence, redefine this to a non-volatile type as needed. */
#if ! @HAVE_TYPE_VOLATILE_SIG_ATOMIC_T@
# if !GNULIB_defined_sig_atomic_t
typedef int rpl_sig_atomic_t;
# undef sig_atomic_t
# define sig_atomic_t rpl_sig_atomic_t
# define GNULIB_defined_sig_atomic_t 1
# endif
#endif
/* A set or mask of signals. */
#if !@HAVE_SIGSET_T@
# if !GNULIB_defined_sigset_t
typedef unsigned int sigset_t;
# define GNULIB_defined_sigset_t 1
# endif
#endif
/* Define sighandler_t, the type of signal handlers. A GNU extension. */
#if !@HAVE_SIGHANDLER_T@
# ifdef __cplusplus
extern "C" {
# endif
# if !GNULIB_defined_sighandler_t
typedef void (*sighandler_t) (int);
# define GNULIB_defined_sighandler_t 1
# endif
# ifdef __cplusplus
}
# endif
#endif
#if @GNULIB_SIGNAL_H_SIGPIPE@
# ifndef SIGPIPE
/* Define SIGPIPE to a value that does not overlap with other signals. */
# define SIGPIPE 13
# define GNULIB_defined_SIGPIPE 1
/* To actually use SIGPIPE, you also need the gnulib modules 'sigprocmask',
'write', 'stdio'. */
# endif
#endif
/* Maximum signal number + 1. */
#ifndef NSIG
# if defined __TANDEM
# define NSIG 32
# endif
#endif
#if @GNULIB_PTHREAD_SIGMASK@
# if @REPLACE_PTHREAD_SIGMASK@
# undef pthread_sigmask
# define pthread_sigmask sigprocmask
# endif
#elif defined GNULIB_POSIXCHECK
# undef pthread_sigmask
# if HAVE_RAW_DECL_PTHREAD_SIGMASK
_GL_WARN_ON_USE (pthread_sigmask, "pthread_sigmask is not portable - "
"use gnulib module pthread_sigmask for portability");
# endif
#endif
#if @GNULIB_SIGPROCMASK@
# if !@HAVE_POSIX_SIGNALBLOCKING@
/* Maximum signal number + 1. */
# ifndef NSIG
# define NSIG 32
# endif
/* This code supports only 32 signals. */
# if !GNULIB_defined_verify_NSIG_constraint
typedef int verify_NSIG_constraint[NSIG <= 32 ? 1 : -1];
# define GNULIB_defined_verify_NSIG_constraint 1
# endif
# endif
/* Test whether a given signal is contained in a signal set. */
# if @HAVE_POSIX_SIGNALBLOCKING@
/* This function is defined as a macro on MacOS X. */
# if defined __cplusplus && defined GNULIB_NAMESPACE
# undef sigismember
# endif
# else
_GL_FUNCDECL_SYS (sigismember, int, (const sigset_t *set, int sig)
_GL_ARG_NONNULL ((1)));
# endif
_GL_CXXALIAS_SYS (sigismember, int, (const sigset_t *set, int sig));
_GL_CXXALIASWARN (sigismember);
/* Initialize a signal set to the empty set. */
# if @HAVE_POSIX_SIGNALBLOCKING@
/* This function is defined as a macro on MacOS X. */
# if defined __cplusplus && defined GNULIB_NAMESPACE
# undef sigemptyset
# endif
# else
_GL_FUNCDECL_SYS (sigemptyset, int, (sigset_t *set) _GL_ARG_NONNULL ((1)));
# endif
_GL_CXXALIAS_SYS (sigemptyset, int, (sigset_t *set));
_GL_CXXALIASWARN (sigemptyset);
/* Add a signal to a signal set. */
# if @HAVE_POSIX_SIGNALBLOCKING@
/* This function is defined as a macro on MacOS X. */
# if defined __cplusplus && defined GNULIB_NAMESPACE
# undef sigaddset
# endif
# else
_GL_FUNCDECL_SYS (sigaddset, int, (sigset_t *set, int sig)
_GL_ARG_NONNULL ((1)));
# endif
_GL_CXXALIAS_SYS (sigaddset, int, (sigset_t *set, int sig));
_GL_CXXALIASWARN (sigaddset);
/* Remove a signal from a signal set. */
# if @HAVE_POSIX_SIGNALBLOCKING@
/* This function is defined as a macro on MacOS X. */
# if defined __cplusplus && defined GNULIB_NAMESPACE
# undef sigdelset
# endif
# else
_GL_FUNCDECL_SYS (sigdelset, int, (sigset_t *set, int sig)
_GL_ARG_NONNULL ((1)));
# endif
_GL_CXXALIAS_SYS (sigdelset, int, (sigset_t *set, int sig));
_GL_CXXALIASWARN (sigdelset);
/* Fill a signal set with all possible signals. */
# if @HAVE_POSIX_SIGNALBLOCKING@
/* This function is defined as a macro on MacOS X. */
# if defined __cplusplus && defined GNULIB_NAMESPACE
# undef sigfillset
# endif
# else
_GL_FUNCDECL_SYS (sigfillset, int, (sigset_t *set) _GL_ARG_NONNULL ((1)));
# endif
_GL_CXXALIAS_SYS (sigfillset, int, (sigset_t *set));
_GL_CXXALIASWARN (sigfillset);
/* Return the set of those blocked signals that are pending. */
# if !@HAVE_POSIX_SIGNALBLOCKING@
_GL_FUNCDECL_SYS (sigpending, int, (sigset_t *set) _GL_ARG_NONNULL ((1)));
# endif
_GL_CXXALIAS_SYS (sigpending, int, (sigset_t *set));
_GL_CXXALIASWARN (sigpending);
/* If OLD_SET is not NULL, put the current set of blocked signals in *OLD_SET.
Then, if SET is not NULL, affect the current set of blocked signals by
combining it with *SET as indicated in OPERATION.
In this implementation, you are not allowed to change a signal handler
while the signal is blocked. */
# if !@HAVE_POSIX_SIGNALBLOCKING@
# define SIG_BLOCK 0 /* blocked_set = blocked_set | *set; */
# define SIG_SETMASK 1 /* blocked_set = *set; */
# define SIG_UNBLOCK 2 /* blocked_set = blocked_set & ~*set; */
_GL_FUNCDECL_SYS (sigprocmask, int,
(int operation, const sigset_t *set, sigset_t *old_set));
# endif
_GL_CXXALIAS_SYS (sigprocmask, int,
(int operation, const sigset_t *set, sigset_t *old_set));
_GL_CXXALIASWARN (sigprocmask);
/* Install the handler FUNC for signal SIG, and return the previous
handler. */
# ifdef __cplusplus
extern "C" {
# endif
# if !GNULIB_defined_function_taking_int_returning_void_t
typedef void (*_gl_function_taking_int_returning_void_t) (int);
# define GNULIB_defined_function_taking_int_returning_void_t 1
# endif
# ifdef __cplusplus
}
# endif
# if !@HAVE_POSIX_SIGNALBLOCKING@
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
# define signal rpl_signal
# endif
_GL_FUNCDECL_RPL (signal, _gl_function_taking_int_returning_void_t,
(int sig, _gl_function_taking_int_returning_void_t func));
_GL_CXXALIAS_RPL (signal, _gl_function_taking_int_returning_void_t,
(int sig, _gl_function_taking_int_returning_void_t func));
# else
_GL_CXXALIAS_SYS (signal, _gl_function_taking_int_returning_void_t,
(int sig, _gl_function_taking_int_returning_void_t func));
# endif
_GL_CXXALIASWARN (signal);
/* Raise signal SIG. */
# if !@HAVE_POSIX_SIGNALBLOCKING@ && GNULIB_defined_SIGPIPE
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
# undef raise
# define raise rpl_raise
# endif
_GL_FUNCDECL_RPL (raise, int, (int sig));
_GL_CXXALIAS_RPL (raise, int, (int sig));
# else
_GL_CXXALIAS_SYS (raise, int, (int sig));
# endif
_GL_CXXALIASWARN (raise);
#elif defined GNULIB_POSIXCHECK
# undef sigaddset
# if HAVE_RAW_DECL_SIGADDSET
_GL_WARN_ON_USE (sigaddset, "sigaddset is unportable - "
"use the gnulib module sigprocmask for portability");
# endif
# undef sigdelset
# if HAVE_RAW_DECL_SIGDELSET
_GL_WARN_ON_USE (sigdelset, "sigdelset is unportable - "
"use the gnulib module sigprocmask for portability");
# endif
# undef sigemptyset
# if HAVE_RAW_DECL_SIGEMPTYSET
_GL_WARN_ON_USE (sigemptyset, "sigemptyset is unportable - "
"use the gnulib module sigprocmask for portability");
# endif
# undef sigfillset
# if HAVE_RAW_DECL_SIGFILLSET
_GL_WARN_ON_USE (sigfillset, "sigfillset is unportable - "
"use the gnulib module sigprocmask for portability");
# endif
# undef sigismember
# if HAVE_RAW_DECL_SIGISMEMBER
_GL_WARN_ON_USE (sigismember, "sigismember is unportable - "
"use the gnulib module sigprocmask for portability");
# endif
# undef sigpending
# if HAVE_RAW_DECL_SIGPENDING
_GL_WARN_ON_USE (sigpending, "sigpending is unportable - "
"use the gnulib module sigprocmask for portability");
# endif
# undef sigprocmask
# if HAVE_RAW_DECL_SIGPROCMASK
_GL_WARN_ON_USE (sigprocmask, "sigprocmask is unportable - "
"use the gnulib module sigprocmask for portability");
# endif
#endif /* @GNULIB_SIGPROCMASK@ */
#if @GNULIB_SIGACTION@
# if !@HAVE_SIGACTION@
# if !@HAVE_SIGINFO_T@
# if !GNULIB_defined_siginfo_types
/* Present to allow compilation, but unsupported by gnulib. */
union sigval
{
int sival_int;
void *sival_ptr;
};
/* Present to allow compilation, but unsupported by gnulib. */
struct siginfo_t
{
int si_signo;
int si_code;
int si_errno;
pid_t si_pid;
uid_t si_uid;
void *si_addr;
int si_status;
long si_band;
union sigval si_value;
};
typedef struct siginfo_t siginfo_t;
# define GNULIB_defined_siginfo_types 1
# endif
# endif /* !@HAVE_SIGINFO_T@ */
/* We assume that platforms which lack the sigaction() function also lack
the 'struct sigaction' type, and vice versa. */
# if !GNULIB_defined_struct_sigaction
struct sigaction
{
union
{
void (*_sa_handler) (int);
/* Present to allow compilation, but unsupported by gnulib. POSIX
says that implementations may, but not must, make sa_sigaction
overlap with sa_handler, but we know of no implementation where
they do not overlap. */
void (*_sa_sigaction) (int, siginfo_t *, void *);
} _sa_func;
sigset_t sa_mask;
/* Not all POSIX flags are supported. */
int sa_flags;
};
# define sa_handler _sa_func._sa_handler
# define sa_sigaction _sa_func._sa_sigaction
/* Unsupported flags are not present. */
# define SA_RESETHAND 1
# define SA_NODEFER 2
# define SA_RESTART 4
# define GNULIB_defined_struct_sigaction 1
# endif
_GL_FUNCDECL_SYS (sigaction, int, (int, const struct sigaction *restrict,
struct sigaction *restrict));
# elif !@HAVE_STRUCT_SIGACTION_SA_SIGACTION@
# define sa_sigaction sa_handler
# endif /* !@HAVE_SIGACTION@, !@HAVE_STRUCT_SIGACTION_SA_SIGACTION@ */
_GL_CXXALIAS_SYS (sigaction, int, (int, const struct sigaction *restrict,
struct sigaction *restrict));
_GL_CXXALIASWARN (sigaction);
#elif defined GNULIB_POSIXCHECK
# undef sigaction
# if HAVE_RAW_DECL_SIGACTION
_GL_WARN_ON_USE (sigaction, "sigaction is unportable - "
"use the gnulib module sigaction for portability");
# endif
#endif
/* Some systems don't have SA_NODEFER. */
#ifndef SA_NODEFER
# define SA_NODEFER 0
#endif
#endif /* _@GUARD_PREFIX@_SIGNAL_H */
#endif /* _@GUARD_PREFIX@_SIGNAL_H */
#endif
......@@ -52,7 +52,9 @@ AC_DEFUN([gl_EARLY],
# Code from module lstat:
# Code from module mktime:
# Code from module multiarch:
# Code from module pthread_sigmask:
# Code from module readlink:
# Code from module signal:
# Code from module socklen:
# Code from module ssize_t:
# Code from module stat:
......@@ -140,12 +142,15 @@ if test $REPLACE_MKTIME = 1; then
fi
gl_TIME_MODULE_INDICATOR([mktime])
gl_MULTIARCH
gl_PTHREAD_SIGMASK
gl_SIGNAL_MODULE_INDICATOR([pthread_sigmask])
gl_FUNC_READLINK
if test $HAVE_READLINK = 0 || test $REPLACE_READLINK = 1; then
AC_LIBOBJ([readlink])
gl_PREREQ_READLINK
fi
gl_UNISTD_MODULE_INDICATOR([readlink])
gl_SIGNAL_H
gl_TYPE_SOCKLEN_T
gt_TYPE_SSIZE_T
gl_STDARG_H
......@@ -241,6 +246,9 @@ gl_STDLIB_MODULE_INDICATOR([strtoull])
if test $REPLACE_LSTAT = 1; then
func_gl_gnulib_m4code_stat
fi
if test $REPLACE_PTHREAD_SIGMASK = 1; then
func_gl_gnulib_m4code_sigprocmask
fi
if test $HAVE_READLINK = 0 || test $REPLACE_READLINK = 1; then
func_gl_gnulib_m4code_stat
fi
......@@ -433,6 +441,7 @@ AC_DEFUN([gl_FILE_LIST], [
lib/sha256.h
lib/sha512.c
lib/sha512.h
lib/signal.in.h
lib/stat.c
lib/stdarg.in.h
lib/stdbool.in.h
......@@ -470,10 +479,12 @@ AC_DEFUN([gl_FILE_LIST], [
m4/md5.m4
m4/mktime.m4
m4/multiarch.m4
m4/pthread_sigmask.m4
m4/readlink.m4
m4/sha1.m4
m4/sha256.m4
m4/sha512.m4
m4/signal_h.m4
m4/socklen.m4
m4/ssize_t.m4
m4/st_dm_mode.m4
......
# pthread_sigmask.m4 serial 2
dnl Copyright (C) 2011 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
AC_DEFUN([gl_PTHREAD_SIGMASK],
[
m4_ifdef([gl_THREADLIB], [
AC_REQUIRE([gl_THREADLIB])
if test "$gl_threads_api" = posix; then
gl_save_LIBS="$LIBS"
LIBS="$LIBS $LIBMULTITHREAD"
AC_CHECK_FUNCS([pthread_sigmask])
LIBS="$gl_save_LIBS"
else
ac_cv_func_pthread_sigmask=no
fi
], [
AC_CHECK_FUNCS_ONCE([pthread_sigmask])
])
if test $ac_cv_func_pthread_sigmask = no; then
REPLACE_PTHREAD_SIGMASK=1
fi
])
# signal_h.m4 serial 14
dnl Copyright (C) 2007-2011 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>
]])
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_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])
HAVE_SIGHANDLER_T=1; AC_SUBST([HAVE_SIGHANDLER_T])
REPLACE_PTHREAD_SIGMASK=0; AC_SUBST([REPLACE_PTHREAD_SIGMASK])
])
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