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Update from Gnulib

Browse source 
This incorporates:
2019-05-24 flexmember: update comments
2019-05-18 pthread_sigmask: fix --enable-threads=windows compilation
2019-05-14 close-stream, closein, closeout: simplify
2019-05-09 verify: remove verify_true
2019-05-09 verify: support C2X and C++17 static_assert
* build-aux/config.guess, build-aux/config.sub:
* doc/misc/texinfo.tex, lib/flexmember.h, lib/verify.h:
* m4/flexmember.m4, m4/pthread_sigmask.m4:
Copy from Gnulib
* m4/gnulib-comp.m4: Regenerate.

2019-05-26  Paul Eggert  <eggert@cs.ucla.edu>

Update author/maintainer info
This mostly updates email addresses and fixes spellings of
author and maintainer names.
This commit is contained in:
Paul Eggert 2019-05-29 16:33:51 -07:00
parent fe0cb43fb8
commit 10582d0511
8 changed files with 193 additions and 170 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

61
build-aux/config.guess vendored
View file

@ -2,7 +2,7 @@
# Attempt to guess a canonical system name.
# Copyright 1992-2019 Free Software Foundation, Inc.
timestamp='2019-04-28'
timestamp='2019-05-28'
# This file is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by
@ -1325,38 +1325,39 @@ EOF
echo "$UNAME_MACHINE"-apple-rhapsody"$UNAME_RELEASE"
exit ;;
*:Darwin:*:*)
UNAME_PROCESSOR=`uname -p` || UNAME_PROCESSOR=unknown
set_cc_for_build
if test "$UNAME_PROCESSOR" = unknown ; then
UNAME_PROCESSOR=powerpc
UNAME_PROCESSOR=`uname -p`
case $UNAME_PROCESSOR in
unknown) UNAME_PROCESSOR=powerpc ;;
esac
if command -v xcode-select > /dev/null 2> /dev/null && \
! xcode-select --print-path > /dev/null 2> /dev/null ; then
# Avoid executing cc if there is no toolchain installed as
# cc will be a stub that puts up a graphical alert
# prompting the user to install developer tools.
CC_FOR_BUILD=no_compiler_found
else
set_cc_for_build
fi
if test "`echo "$UNAME_RELEASE" | sed -e 's/\..*//'`" -le 10 ; then
if [ "$CC_FOR_BUILD" != no_compiler_found ]; then
if (echo '#ifdef __LP64__'; echo IS_64BIT_ARCH; echo '#endif') | \
(CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) | \
grep IS_64BIT_ARCH >/dev/null
then
case $UNAME_PROCESSOR in
i386) UNAME_PROCESSOR=x86_64 ;;
powerpc) UNAME_PROCESSOR=powerpc64 ;;
esac
fi
# On 10.4-10.6 one might compile for PowerPC via gcc -arch ppc
if (echo '#ifdef __POWERPC__'; echo IS_PPC; echo '#endif') | \
(CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) | \
grep IS_PPC >/dev/null
then
UNAME_PROCESSOR=powerpc
fi
if [ "$CC_FOR_BUILD" != no_compiler_found ]; then
if (echo '#ifdef __LP64__'; echo IS_64BIT_ARCH; echo '#endif') | \
(CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) | \
grep IS_64BIT_ARCH >/dev/null
then
case $UNAME_PROCESSOR in
i386) UNAME_PROCESSOR=x86_64 ;;
powerpc) UNAME_PROCESSOR=powerpc64 ;;
esac
fi
# On 10.4-10.6 one might compile for PowerPC via gcc -arch ppc
if (echo '#ifdef __POWERPC__'; echo IS_PPC; echo '#endif') | \
(CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) | \
grep IS_PPC >/dev/null
then
UNAME_PROCESSOR=powerpc
fi
elif test "$UNAME_PROCESSOR" = i386 ; then
# Avoid executing cc on OS X 10.9, as it ships with a stub
# that puts up a graphical alert prompting to install
# developer tools. Any system running Mac OS X 10.7 or
# later (Darwin 11 and later) is required to have a 64-bit
# processor. This is not true of the ARM version of Darwin
# that Apple uses in portable devices.
UNAME_PROCESSOR=x86_64
# uname -m returns i386 or x86_64
UNAME_PROCESSOR=$UNAME_MACHINE
fi
echo "$UNAME_PROCESSOR"-apple-darwin"$UNAME_RELEASE"
exit ;;

4
build-aux/config.sub vendored
View file

@ -2,7 +2,7 @@
# Configuration validation subroutine script.
# Copyright 1992-2019 Free Software Foundation, Inc.
timestamp='2019-01-05'
timestamp='2019-05-23'
# This file is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by
@ -1172,7 +1172,7 @@ case $cpu-$vendor in
| asmjs \
| ba \
| be32 | be64 \
| bfin | bs2000 \
| bfin | bpf | bs2000 \
| c[123]* | c30 | [cjt]90 | c4x \
| c8051 | clipper | craynv | csky | cydra \
| d10v | d30v | dlx | dsp16xx \

17
doc/misc/texinfo.tex
View file

@ -3,7 +3,7 @@
% Load plain if necessary, i.e., if running under initex.
\expandafter\ifx\csname fmtname\endcsname\relax\input plain\fi
%
\def\texinfoversion{2019-04-12.13}
\def\texinfoversion{2019-05-18.15}
%
% Copyright 1985, 1986, 1988, 1990-2019 Free Software Foundation, Inc.
%
@ -4952,6 +4952,8 @@ end
\definedummyword\sup
\definedummyword\textdegree
%
\definedummyword\subentry
%
% We want to disable all macros so that they are not expanded by \write.
\macrolist
\let\value\dummyvalue
@ -5224,10 +5226,10 @@ end
}
\def\indexwriteseealso#1{
\gdef\pagenumbertext{@seealso{#1}}%
\gdef\pagenumbertext{\string\seealso{#1}}%
}
\def\indexwriteseeentry#1{
\gdef\pagenumbertext{@seeentry{#1}}%
\gdef\pagenumbertext{\string\seeentry{#1}}%
}
% The default definitions
@ -5315,6 +5317,15 @@ end
% the current value of \escapechar.
\def\escapeisbackslash{\escapechar=`\\}
% Use \ in index files by default. texi2dvi didn't support @ as as the escape
% character (as it checked for "\entry" in the files, and not "@entry"). When
% the new version of texi2dvi has had a chance to become more prevalent, then
% the escape character can change back to @ again. This should be an easy
% change to make now because both @ and \ are only used as escape characters in
% index files, never standing for themselves.
%
\set txiindexescapeisbackslash
% Write the entry in \indextext to the index file.
%
\def\doindwrite{%

25
lib/flexmember.h
View file

@ -33,11 +33,26 @@
# define FLEXALIGNOF(type) _Alignof (type)
#endif
/* Upper bound on the size of a struct of type TYPE with a flexible
array member named MEMBER that is followed by N bytes of other data.
This is not simply sizeof (TYPE) + N, since it may require
alignment on unusually picky C11 platforms, and
FLEXIBLE_ARRAY_MEMBER may be 1 on pre-C11 platforms.
/* Yield a properly aligned upper bound on the size of a struct of
type TYPE with a flexible array member named MEMBER that is
followed by N bytes of other data. The result is suitable as an
argument to malloc. For example:
struct s { int n; char d[FLEXIBLE_ARRAY_MEMBER]; };
struct s *p = malloc (FLEXSIZEOF (struct s, d, n * sizeof (char)));
FLEXSIZEOF (TYPE, MEMBER, N) is not simply (sizeof (TYPE) + N),
since FLEXIBLE_ARRAY_MEMBER may be 1 on pre-C11 platforms. Nor is
it simply (offsetof (TYPE, MEMBER) + N), as that might yield a size
that causes malloc to yield a pointer that is not properly aligned
for TYPE; for example, if sizeof (int) == alignof (int) == 4,
malloc (offsetof (struct s, d) + 3 * sizeof (char)) is equivalent
to malloc (7) and might yield a pointer that is not a multiple of 4
(which means the pointer is not properly aligned for struct s),
whereas malloc (FLEXSIZEOF (struct s, d, 3 * sizeof (char))) is
equivalent to malloc (8) and must yield a pointer that is a
multiple of 4.
Yield a value less than N if and only if arithmetic overflow occurs. */
#define FLEXSIZEOF(type, member, n) \

106
lib/verify.h
View file

@ -21,29 +21,37 @@
#define _GL_VERIFY_H
/* Define _GL_HAVE__STATIC_ASSERT to 1 if _Static_assert works as per C11.
This is supported by GCC 4.6.0 and later, in C mode, and its use
here generates easier-to-read diagnostics when verify (R) fails.
/* Define _GL_HAVE__STATIC_ASSERT to 1 if _Static_assert (R, DIAGNOSTIC)
works as per C11. This is supported by GCC 4.6.0 and later, in C
mode.
Define _GL_HAVE_STATIC_ASSERT to 1 if static_assert works as per C++11.
This is supported by GCC 6.1.0 and later, in C++ mode.
Define _GL_HAVE__STATIC_ASSERT1 to 1 if _Static_assert (R) works as
per C2X, and define _GL_HAVE_STATIC_ASSERT1 if static_assert (R)
works as per C++17. This is supported by GCC 9.1 and later.
Use this only with GCC. If we were willing to slow 'configure'
down we could also use it with other compilers, but since this
affects only the quality of diagnostics, why bother? */
#if (4 < __GNUC__ + (6 <= __GNUC_MINOR__) \
&& (201112L <= __STDC_VERSION__ || !defined __STRICT_ANSI__) \
&& !defined __cplusplus)
# define _GL_HAVE__STATIC_ASSERT 1
#endif
#if (6 <= __GNUC__) && defined __cplusplus
# define _GL_HAVE_STATIC_ASSERT 1
Support compilers claiming conformance to the relevant standard,
and also support GCC when not pedantic. If we were willing to slow
'configure' down we could also use it with other compilers, but
since this affects only the quality of diagnostics, why bother? */
#ifndef __cplusplus
# if (201112L <= __STDC_VERSION__ \
|| (!defined __STRICT_ANSI__ && 4 < __GNUC__ + (6 <= __GNUC_MINOR__)))
# define _GL_HAVE__STATIC_ASSERT 1
# endif
# if (202000L <= __STDC_VERSION__ \
|| (!defined __STRICT_ANSI__ && 9 <= __GNUC__))
# define _GL_HAVE__STATIC_ASSERT1 1
# endif
#else
# if 201703L <= __cplusplus || 9 <= __GNUC__
# define _GL_HAVE_STATIC_ASSERT1 1
# endif
#endif
/* FreeBSD 9.1 <sys/cdefs.h>, included by <stddef.h> and lots of other
system headers, defines a conflicting _Static_assert that is no
better than ours; override it. */
#ifndef _GL_HAVE_STATIC_ASSERT
#ifndef _GL_HAVE__STATIC_ASSERT
# include <stddef.h>
# undef _Static_assert
#endif
@ -141,9 +149,9 @@
which do not support _Static_assert, also do not warn about the
last declaration mentioned above.
* GCC warns if -Wnested-externs is enabled and verify() is used
* GCC warns if -Wnested-externs is enabled and 'verify' is used
within a function body; but inside a function, you can always
arrange to use verify_expr() instead.
arrange to use verify_expr instead.
* In C++, any struct definition inside sizeof is invalid.
Use a template type to work around the problem. */
@ -167,11 +175,9 @@
#define _GL_GENSYM(prefix) _GL_CONCAT (prefix, _GL_COUNTER)
/* Verify requirement R at compile-time, as an integer constant expression
that returns 1. If R is false, fail at compile-time, preferably
with a diagnostic that includes the string-literal DIAGNOSTIC. */
that returns 1. If R is false, fail at compile-time. */
#define _GL_VERIFY_TRUE(R, DIAGNOSTIC) \
(!!sizeof (_GL_VERIFY_TYPE (R, DIAGNOSTIC)))
#define _GL_VERIFY_TRUE(R) (!!sizeof (_GL_VERIFY_TYPE (R)))
#ifdef __cplusplus
# if !GNULIB_defined_struct__gl_verify_type
@ -181,40 +187,43 @@ template <int w>
};
# define GNULIB_defined_struct__gl_verify_type 1
# endif
# define _GL_VERIFY_TYPE(R, DIAGNOSTIC) \
_gl_verify_type<(R) ? 1 : -1>
#elif defined _GL_HAVE__STATIC_ASSERT
# define _GL_VERIFY_TYPE(R, DIAGNOSTIC) \
# define _GL_VERIFY_TYPE(R) _gl_verify_type<(R) ? 1 : -1>
#elif defined _GL_HAVE__STATIC_ASSERT1
# define _GL_VERIFY_TYPE(R) \
struct { \
_Static_assert (R, DIAGNOSTIC); \
_Static_assert (R); \
int _gl_dummy; \
}
#else
# define _GL_VERIFY_TYPE(R, DIAGNOSTIC) \
# define _GL_VERIFY_TYPE(R) \
struct { unsigned int _gl_verify_error_if_negative: (R) ? 1 : -1; }
#endif
/* Verify requirement R at compile-time, as a declaration without a
trailing ';'. If R is false, fail at compile-time, preferably
with a diagnostic that includes the string-literal DIAGNOSTIC.
trailing ';'. If R is false, fail at compile-time.
This macro requires three or more arguments but uses at most the first
two, so that the _Static_assert macro optionally defined below supports
both the C11 two-argument syntax and the C2X one-argument syntax.
Unfortunately, unlike C11, this implementation must appear as an
ordinary declaration, and cannot appear inside struct { ... }. */
#ifdef _GL_HAVE__STATIC_ASSERT
# define _GL_VERIFY _Static_assert
#if defined _GL_HAVE__STATIC_ASSERT
# define _GL_VERIFY(R, DIAGNOSTIC, ...) _Static_assert (R, DIAGNOSTIC)
#else
# define _GL_VERIFY(R, DIAGNOSTIC) \
# define _GL_VERIFY(R, DIAGNOSTIC, ...) \
extern int (*_GL_GENSYM (_gl_verify_function) (void)) \
[_GL_VERIFY_TRUE (R, DIAGNOSTIC)]
[_GL_VERIFY_TRUE (R)]
#endif
/* _GL_STATIC_ASSERT_H is defined if this code is copied into assert.h. */
#ifdef _GL_STATIC_ASSERT_H
# if !defined _GL_HAVE__STATIC_ASSERT && !defined _Static_assert
# define _Static_assert(R, DIAGNOSTIC) _GL_VERIFY (R, DIAGNOSTIC)
# if !defined _GL_HAVE__STATIC_ASSERT1 && !defined _Static_assert
# define _Static_assert(...) \
_GL_VERIFY (__VA_ARGS__, "static assertion failed", -)
# endif
# if !defined _GL_HAVE_STATIC_ASSERT && !defined static_assert
# if !defined _GL_HAVE_STATIC_ASSERT1 && !defined static_assert
# define static_assert _Static_assert /* C11 requires this #define. */
# endif
#endif
@ -226,31 +235,24 @@ template <int w>
assert (R), there is no run-time overhead.
There are two macros, since no single macro can be used in all
contexts in C. verify_true (R) is for scalar contexts, including
contexts in C. verify_expr (R, E) is for scalar contexts, including
integer constant expression contexts. verify (R) is for declaration
contexts, e.g., the top level. */
/* Verify requirement R at compile-time, as an integer constant expression.
Return 1. This is equivalent to verify_expr (R, 1).
verify_true is obsolescent; please use verify_expr instead. */
#define verify_true(R) _GL_VERIFY_TRUE (R, "verify_true (" #R ")")
/* Verify requirement R at compile-time. Return the value of the
expression E. */
#define verify_expr(R, E) \
(_GL_VERIFY_TRUE (R, "verify_expr (" #R ", " #E ")") ? (E) : (E))
#define verify_expr(R, E) (_GL_VERIFY_TRUE (R) ? (E) : (E))
/* Verify requirement R at compile-time, as a declaration without a
trailing ';'. */
trailing ';'. verify (R) acts like static_assert (R) except that
it is portable to C11/C++14 and earlier, and its name is shorter
and may be more convenient. */
#ifdef __GNUC__
# define verify(R) _GL_VERIFY (R, "verify (" #R ")")
#ifdef _GL_HAVE__STATIC_ASSERT1
# define verify(R) _Static_assert (R)
#else
/* PGI barfs if R is long. Play it safe. */
# define verify(R) _GL_VERIFY (R, "verify (...)")
# define verify(R) _GL_VERIFY (R, "verify (...)", -)
#endif
#ifndef __has_builtin

8
m4/flexmember.m4
View file

@ -34,12 +34,10 @@ AC_DEFUN([AC_C_FLEXIBLE_ARRAY_MEMBER],
AC_DEFINE([FLEXIBLE_ARRAY_MEMBER], [],
[Define to nothing if C supports flexible array members, and to
1 if it does not. That way, with a declaration like 'struct s
{ int n; double d@<:@FLEXIBLE_ARRAY_MEMBER@:>@; };', the struct hack
{ int n; short d@<:@FLEXIBLE_ARRAY_MEMBER@:>@; };', the struct hack
can be used with pre-C99 compilers.
When computing the size of such an object, don't use 'sizeof (struct s)'
as it overestimates the size. Use 'offsetof (struct s, d)' instead.
Don't use 'offsetof (struct s, d@<:@0@:>@)', as this doesn't work with
MSVC and with C++ compilers.])
Use 'FLEXSIZEOF (struct s, d, N * sizeof (short))' to calculate
the size in bytes of such a struct containing an N-element array.])
else
AC_DEFINE([FLEXIBLE_ARRAY_MEMBER], [1])
fi

2
m4/gnulib-comp.m4
View file

@ -200,7 +200,6 @@ AC_DEFUN([gl_INIT],
gl_BYTESWAP
AC_CHECK_FUNCS_ONCE([readlinkat])
gl_CLOCK_TIME
gl_CLOSE_STREAM
gl_MODULE_INDICATOR([close-stream])
gl_COUNT_LEADING_ZEROS
gl_COUNT_ONE_BITS
@ -996,7 +995,6 @@ AC_DEFUN([gl_FILE_LIST], [
m4/builtin-expect.m4
m4/byteswap.m4
m4/clock_time.m4
m4/close-stream.m4
m4/count-leading-zeros.m4
m4/count-one-bits.m4
m4/count-trailing-zeros.m4

140
m4/pthread_sigmask.m4
View file

@ -1,4 +1,4 @@
# pthread_sigmask.m4 serial 16
# pthread_sigmask.m4 serial 17
dnl Copyright (C) 2011-2019 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
@ -9,103 +9,101 @@ AC_DEFUN([gl_FUNC_PTHREAD_SIGMASK],
AC_REQUIRE([gl_SIGNAL_H_DEFAULTS])
AC_CHECK_FUNCS_ONCE([pthread_sigmask])
dnl On MinGW pthread_sigmask is just a macro which always returns 0.
dnl It does not exist as a real function, which is required by POSIX.
AC_CACHE_CHECK([whether pthread_sigmask is a macro],
[gl_cv_func_pthread_sigmask_macro],
[AC_EGREP_CPP([headers_define_pthread_sigmask], [
#include <pthread.h>
#include <signal.h>
#ifdef pthread_sigmask
headers_define_pthread_sigmask
#endif],
[gl_cv_func_pthread_sigmask_macro=yes],
[gl_cv_func_pthread_sigmask_macro=no])
])
LIB_PTHREAD_SIGMASK=
dnl Test whether the gnulib module 'threadlib' is in use.
dnl Some packages like Emacs use --avoid=threadlib.
dnl Write the symbol in such a way that it does not cause 'aclocal' to pick
dnl the threadlib.m4 file that is installed in $PREFIX/share/aclocal/.
m4_ifdef([gl_][THREADLIB], [
AC_REQUIRE([gl_][THREADLIB])
if test $gl_cv_func_pthread_sigmask_macro = yes; then
dnl pthread_sigmask is a dummy macro.
HAVE_PTHREAD_SIGMASK=0
dnl Make sure to '#undef pthread_sigmask' before defining it.
REPLACE_PTHREAD_SIGMASK=1
else
dnl Test whether the gnulib module 'threadlib' is in use.
dnl Some packages like Emacs use --avoid=threadlib.
dnl Write the symbol in such a way that it does not cause 'aclocal' to pick
dnl the threadlib.m4 file that is installed in $PREFIX/share/aclocal/.
m4_ifdef([gl_][THREADLIB], [
AC_REQUIRE([gl_][THREADLIB])
if test "$gl_threads_api" = posix; then
if test $ac_cv_func_pthread_sigmask = yes; then
dnl pthread_sigmask is available without -lpthread.
:
else
if test -n "$LIBMULTITHREAD"; then
AC_CACHE_CHECK([for pthread_sigmask in $LIBMULTITHREAD],
[gl_cv_func_pthread_sigmask_in_LIBMULTITHREAD],
[gl_save_LIBS="$LIBS"
LIBS="$LIBS $LIBMULTITHREAD"
AC_LINK_IFELSE(
[AC_LANG_PROGRAM(
[[#include <pthread.h>
#include <signal.h>
]],
[[return pthread_sigmask (0, (sigset_t *) 0, (sigset_t *) 0);]])
],
[gl_cv_func_pthread_sigmask_in_LIBMULTITHREAD=yes],
[gl_cv_func_pthread_sigmask_in_LIBMULTITHREAD=no])
LIBS="$gl_save_LIBS"
])
if test $gl_cv_func_pthread_sigmask_in_LIBMULTITHREAD = yes; then
AC_CACHE_CHECK([whether pthread_sigmask is only a macro],
[gl_cv_func_pthread_sigmask_is_macro],
if test "$gl_threads_api" = posix; then
if test $ac_cv_func_pthread_sigmask = yes; then
dnl pthread_sigmask is available without -lpthread.
:
else
if test -n "$LIBMULTITHREAD"; then
AC_CACHE_CHECK([for pthread_sigmask in $LIBMULTITHREAD],
[gl_cv_func_pthread_sigmask_in_LIBMULTITHREAD],
[gl_save_LIBS="$LIBS"
LIBS="$LIBS $LIBMULTITHREAD"
AC_LINK_IFELSE(
[AC_LANG_PROGRAM(
[[#include <pthread.h>
#include <signal.h>
#undef pthread_sigmask
]],
[[return pthread_sigmask (0, (sigset_t *) 0, (sigset_t *) 0);]])
],
[gl_cv_func_pthread_sigmask_is_macro=no],
[gl_cv_func_pthread_sigmask_is_macro=yes])
[gl_cv_func_pthread_sigmask_in_LIBMULTITHREAD=yes],
[gl_cv_func_pthread_sigmask_in_LIBMULTITHREAD=no])
LIBS="$gl_save_LIBS"
])
if test $gl_cv_func_pthread_sigmask_is_macro = yes; then
dnl On MinGW pthread_sigmask is just a macro which always returns 0.
dnl It does not exist as a real function, which is required by POSIX.
REPLACE_PTHREAD_SIGMASK=1
gl_cv_func_pthread_sigmask_in_LIBMULTITHREAD=no
if test $gl_cv_func_pthread_sigmask_in_LIBMULTITHREAD = yes; then
dnl pthread_sigmask is available with -pthread or -lpthread.
LIB_PTHREAD_SIGMASK="$LIBMULTITHREAD"
else
dnl pthread_sigmask is not available at all.
HAVE_PTHREAD_SIGMASK=0
fi
fi
if test $gl_cv_func_pthread_sigmask_in_LIBMULTITHREAD = yes; then
dnl pthread_sigmask is available with -pthread or -lpthread.
LIB_PTHREAD_SIGMASK="$LIBMULTITHREAD"
else
dnl pthread_sigmask is not available at all.
HAVE_PTHREAD_SIGMASK=0
fi
fi
else
dnl pthread_sigmask may exist but does not interoperate with the chosen
dnl multithreading facility.
dnl If "$gl_threads_api" = pth, we could use the function pth_sigmask,
dnl but it is equivalent to sigprocmask, so we choose to emulate
dnl pthread_sigmask with sigprocmask also in this case. This yields
dnl fewer link dependencies.
if test $ac_cv_func_pthread_sigmask = yes; then
REPLACE_PTHREAD_SIGMASK=1
else
dnl pthread_sigmask is not available at all.
HAVE_PTHREAD_SIGMASK=0
fi
fi
else
dnl pthread_sigmask may exist but does not interoperate with the chosen
dnl multithreading facility.
dnl If "$gl_threads_api" = pth, we could use the function pth_sigmask,
dnl but it is equivalent to sigprocmask, so we choose to emulate
dnl pthread_sigmask with sigprocmask also in this case. This yields fewer
dnl link dependencies.
], [
dnl The module 'threadlib' is not in use, due to --avoid=threadlib being
dnl specified.
dnl The package either has prepared CPPFLAGS and LIBS for use of
dnl POSIX:2008 threads, or wants to build single-threaded programs.
if test $ac_cv_func_pthread_sigmask = yes; then
REPLACE_PTHREAD_SIGMASK=1
dnl pthread_sigmask exists and does not require extra libraries.
dnl Assume that it is declared.
:
else
dnl pthread_sigmask either does not exist or needs extra libraries.
HAVE_PTHREAD_SIGMASK=0
dnl Define the symbol rpl_pthread_sigmask, not pthread_sigmask,
dnl so as to not accidentally override the system's pthread_sigmask
dnl symbol from libpthread. This is necessary on IRIX 6.5.
REPLACE_PTHREAD_SIGMASK=1
fi
fi
], [
dnl The module 'threadlib' is not in use, due to --avoid=threadlib being
dnl specified.
dnl The package either has prepared CPPFLAGS and LIBS for use of POSIX:2008
dnl threads, or wants to build single-threaded programs.
if test $ac_cv_func_pthread_sigmask = yes; then
dnl pthread_sigmask exists and does not require extra libraries.
dnl Assume that it is declared.
:
else
dnl pthread_sigmask either does not exist or needs extra libraries.
HAVE_PTHREAD_SIGMASK=0
dnl Define the symbol rpl_pthread_sigmask, not pthread_sigmask,
dnl so as to not accidentally override the system's pthread_sigmask
dnl symbol from libpthread. This is necessary on IRIX 6.5.
REPLACE_PTHREAD_SIGMASK=1
fi
])
])
fi
AC_SUBST([LIB_PTHREAD_SIGMASK])
dnl We don't need a variable LTLIB_PTHREAD_SIGMASK, because when